Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
#152
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2007
Location: Mechanicsville Virginia
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Turbo Trans Am gta
Engine: 383 78mm turbo
Transmission: Th350 rmvb with brake
Axle/Gears: 9 bolt 3.45s
Re: Just another blow thru MP-T70 build thread
The .68 is too small for a 350. It would be better for a 305. For a 350 the ideal size would be something around .81 or similar but I would not go with anything smaller. With the .96 I am expecting decent spool times
#153
Member
Join Date: Dec 2007
Location: Minnesota
Posts: 475
Likes: 0
Received 2 Likes
on
2 Posts
Car: '88 Iroc
Engine: Single turbo Vortec 5.7, Megasquirt
Transmission: Probuilt 700r4 3000 stall Vigilante
Axle/Gears: Moser 9" 3.25 w/True Trac
Re: Just another blow thru MP-T70 build thread
Hey great build thread. I'm loving all the pics. Couple of questions:
1. Maybe I missed it, but how exactly does the crossover pipe route from the driver side header to the turbo?
2. What size is your downpipe? Looks like maybe 3"?
3. Where is your wastegate mounted? Do you have any more header pics?
Thanks, I'm thinking of starting a turbo project on my car too, so just doing some research.
1. Maybe I missed it, but how exactly does the crossover pipe route from the driver side header to the turbo?
2. What size is your downpipe? Looks like maybe 3"?
3. Where is your wastegate mounted? Do you have any more header pics?
Thanks, I'm thinking of starting a turbo project on my car too, so just doing some research.
#154
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2007
Location: Mechanicsville Virginia
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Turbo Trans Am gta
Engine: 383 78mm turbo
Transmission: Th350 rmvb with brake
Axle/Gears: 9 bolt 3.45s
Re: Just another blow thru MP-T70 build thread
Hey great build thread. I'm loving all the pics. Couple of questions:
1. Maybe I missed it, but how exactly does the crossover pipe route from the driver side header to the turbo?
2. What size is your downpipe? Looks like maybe 3"?
3. Where is your wastegate mounted? Do you have any more header pics?
Thanks, I'm thinking of starting a turbo project on my car too, so just doing some research.
1. Maybe I missed it, but how exactly does the crossover pipe route from the driver side header to the turbo?
2. What size is your downpipe? Looks like maybe 3"?
3. Where is your wastegate mounted? Do you have any more header pics?
Thanks, I'm thinking of starting a turbo project on my car too, so just doing some research.
#155
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2007
Location: Mechanicsville Virginia
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Turbo Trans Am gta
Engine: 383 78mm turbo
Transmission: Th350 rmvb with brake
Axle/Gears: 9 bolt 3.45s
Re: Just another blow thru MP-T70 build thread
I finally got the carburetor back from csu oh man does it look good. I already made the fuel lines to the regulator, bottom radiator hose. Ill post more pics when i get home.
#156
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2007
Location: Mechanicsville Virginia
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Turbo Trans Am gta
Engine: 383 78mm turbo
Transmission: Th350 rmvb with brake
Axle/Gears: 9 bolt 3.45s
Re: Just another blow thru MP-T70 build thread (will start up the week of Nov 7)
its pretty much done except for a couple of wires that i still have to run here and there, a couple of parts waiting to come in to be installed and some minor details, like painting all the pipes black and wrapping the crossover pipe but here it is.
The tuning of this thing will be fun
The tuning of this thing will be fun
#157
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2007
Location: Mechanicsville Virginia
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Turbo Trans Am gta
Engine: 383 78mm turbo
Transmission: Th350 rmvb with brake
Axle/Gears: 9 bolt 3.45s
Re: Just another blow thru MP-T70 build thread (will start up the week of Nov 7)
oh yeah i forgot i need to get some HAIRSPRAY!!!
#159
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2007
Location: Mechanicsville Virginia
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Turbo Trans Am gta
Engine: 383 78mm turbo
Transmission: Th350 rmvb with brake
Axle/Gears: 9 bolt 3.45s
Re: Just another blow thru MP-T70 build thread (will start up the week of Nov 7)
You know i have never in my life bought hairspray, what should i look for? any brand better than others or it is all just hairspray? lol
#162
Member
Join Date: Dec 2007
Location: Minnesota
Posts: 475
Likes: 0
Received 2 Likes
on
2 Posts
Car: '88 Iroc
Engine: Single turbo Vortec 5.7, Megasquirt
Transmission: Probuilt 700r4 3000 stall Vigilante
Axle/Gears: Moser 9" 3.25 w/True Trac
Re: Just another blow thru MP-T70 build thread (will start up the week of Nov 7)
How did you find the room to fit the crossover pipe and DP back by the heater box/firewall? I guess I'm still confused how the crossover pipe goes from under the oil pan to the pass side header. I would think the starter would be right in the way.
#163
Re: Just another blow thru MP-T70 build thread (will start up the week of Nov 7)
Theres alot more room down there than you think...especially with ministarter. BBS designs turbo header was a similar design with downpipe and crossover pipe coming up onthe passenger side.
#164
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2007
Location: Mechanicsville Virginia
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Turbo Trans Am gta
Engine: 383 78mm turbo
Transmission: Th350 rmvb with brake
Axle/Gears: 9 bolt 3.45s
Re: Just another blow thru MP-T70 build thread (will start up the week of Nov 7)
If you look at your engine in the bay, number 8 header primary sits about 4-5" from the firewall without the heater box, with the heater box its alot closer and my setup may will not work. The downpipe as you see from the pics goes down between the engine and firewall and still has about 1/2-3/4 of an inch on each side which gives me room for improvement when i need it. After it passes the headers it makes another turn through where the stock y-pipe was originaly ran.
I will try and take a couple of shot for you.
#165
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2007
Location: Mechanicsville Virginia
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Turbo Trans Am gta
Engine: 383 78mm turbo
Transmission: Th350 rmvb with brake
Axle/Gears: 9 bolt 3.45s
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
here are the crossover pipe pics.
#166
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2007
Location: Mechanicsville Virginia
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Turbo Trans Am gta
Engine: 383 78mm turbo
Transmission: Th350 rmvb with brake
Axle/Gears: 9 bolt 3.45s
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
So i got the car started, and it fired right up. I had a defective oil pressure gauge, it worked fine at first but then the oil pressure dropped to 5psi and stayed there. Scared the crap out of me so i tried a couple other mechanical gauges and it was up in the 50psi range. I guess the sender unit went bad so fri. i went and bought a new mechanical one. No more elctronic gauges for me. Another problem was the shifter cable, man that thing me made so mad i spent at least 6hrs trying to adjust it and nothing i was starting to think the shifter was bad but then i used another cable i had at home and tah dah. I havent done any driving yet just idlen and stuff, engine hasnt seen any boost yet.
I still need to finish the exhaust as its too loud right now and the interior.
I still need to finish the exhaust as its too loud right now and the interior.
#167
Senior Member
Join Date: Sep 2009
Location: Madison, SD
Posts: 569
Likes: 0
Received 0 Likes
on
0 Posts
Car: '82 Camaro
Engine: 383
Transmission: TKO 5 speed
Axle/Gears: 31 spline 9" with 4.56:1
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
Great looking setup!!! Hope you would decide to do the final tune on a chassis dyno, it 'd be very interesting to see what kind of numbers the engine makes!
#168
Supreme Member
Join Date: Jul 1999
Location: Panama City FL
Posts: 1,773
Likes: 0
Received 6 Likes
on
5 Posts
Car: 87 Iroc
Engine: Turbocharged 5.7 Pro-Fl-XT
Transmission: 700R4 for moment
Axle/Gears: 3.25 9 inch
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
That's pretty much exactly how my crossover pipe runs. It follows the factory Y pipe but turns up just ahead of the starter. Plenty of room for the down pipe behind that, even with a factory starter and the AC box in place, depending on the design of the log. Without the AC box as Noboostnogo's is even a 4 inch downpipe is possible, especially with the ministarter. BTW anyone planning to do this setup, just go ahead and spend the money on a mini-starter or LT1 starter. There is a lot of heat radiating from the close proximity of the dp, crossover and manifold above. A stock starter won't be happy for long!
Here is a pic with the stock starter when I was building the dp:
Here is a pic with the stock starter when I was building the dp:
#170
Member
Join Date: Dec 2007
Location: Minnesota
Posts: 475
Likes: 0
Received 2 Likes
on
2 Posts
Car: '88 Iroc
Engine: Single turbo Vortec 5.7, Megasquirt
Transmission: Probuilt 700r4 3000 stall Vigilante
Axle/Gears: Moser 9" 3.25 w/True Trac
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
Hey thanks for all the pics and info about the crossover pipe and DP. Hmm.... I'm getting a mini starter either way, maybe I will try going this route too. I was thinking about bringing the crossover pipe around the front of the engine but now I'm not sure. Does the driver side header get a lot hotter feeding into a turbo than it does N/A? I know everyone recommends using beefier materials for turbo headers but I wonder if the drivers side header would get any hotter since the turbo is a couple of pipe-feet away from the turbine. It'd be nice to keep my existing drivers side header if I could.
#171
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2007
Location: Mechanicsville Virginia
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Turbo Trans Am gta
Engine: 383 78mm turbo
Transmission: Th350 rmvb with brake
Axle/Gears: 9 bolt 3.45s
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
Here's a video of the car idling. This is my first time recording with this camera so please excuse me
http://www.youtube.com/watch?v=jfR1TiIkFS0 It is a full HD 1080p clip. It took forever and a day to upload.
http://www.youtube.com/watch?v=jfR1TiIkFS0 It is a full HD 1080p clip. It took forever and a day to upload.
#172
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2007
Location: Mechanicsville Virginia
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Turbo Trans Am gta
Engine: 383 78mm turbo
Transmission: Th350 rmvb with brake
Axle/Gears: 9 bolt 3.45s
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
heres a cool vide of my car.
http://www.youtube.com/watch?v=bOtAJ9F8l3w
I need to enrichen it a bit @ wot, the carb out of the box got me a 12.5:1 @ wot. im shooting for 11.5:1 @ wot @ 7psi.
oh and i need a much larger BOV. My turbo is surging at only 7psi with the bov at the softest setting. I will get a 50mm bov
http://www.youtube.com/watch?v=bOtAJ9F8l3w
I need to enrichen it a bit @ wot, the carb out of the box got me a 12.5:1 @ wot. im shooting for 11.5:1 @ wot @ 7psi.
oh and i need a much larger BOV. My turbo is surging at only 7psi with the bov at the softest setting. I will get a 50mm bov
#173
Junior Member
Join Date: Feb 2010
Location: euclid oh
Posts: 39
Likes: 0
Received 1 Like
on
1 Post
Car: 91 rs
Engine: 434 stroked v7 supercharger
Transmission: mad dogg 700r4
Axle/Gears: 3.73
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
good job cant wait to see what kind of performance u get r u goin to run it on the dyno? whats the cr on your engine ? do u plan to run a water/meth injection?
#174
Member
iTrader: (5)
Join Date: Feb 2009
Location: Mt. Prospect IL
Posts: 102
Likes: 0
Received 0 Likes
on
0 Posts
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
heres a cool vide of my car.
http://www.youtube.com/watch?v=bOtAJ9F8l3w
I need to enrichen it a bit @ wot, the carb out of the box got me a 12.5:1 @ wot. im shooting for 11.5:1 @ wot @ 7psi.
oh and i need a much larger BOV. My turbo is surging at only 7psi with the bov at the softest setting. I will get a 50mm bov
http://www.youtube.com/watch?v=bOtAJ9F8l3w
I need to enrichen it a bit @ wot, the carb out of the box got me a 12.5:1 @ wot. im shooting for 11.5:1 @ wot @ 7psi.
oh and i need a much larger BOV. My turbo is surging at only 7psi with the bov at the softest setting. I will get a 50mm bov
Surging, i dont get it? My pressure jumps around sorta around 9-11psi and i have a tiny blowoff with super light spring(actually cut the spring down a little.) Is that surging?
#175
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2007
Location: Mechanicsville Virginia
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Turbo Trans Am gta
Engine: 383 78mm turbo
Transmission: Th350 rmvb with brake
Axle/Gears: 9 bolt 3.45s
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
i dont remember exactly where my cr was at but iirc it was 9.2:1 or somethin like that, i do plan on hittin the dyno for fine tunning. no water/ meth yet.
#176
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2007
Location: Mechanicsville Virginia
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Turbo Trans Am gta
Engine: 383 78mm turbo
Transmission: Th350 rmvb with brake
Axle/Gears: 9 bolt 3.45s
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
Hows your tunning coming?
#177
Member
iTrader: (5)
Join Date: Feb 2009
Location: Mt. Prospect IL
Posts: 102
Likes: 0
Received 0 Likes
on
0 Posts
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
ohh **** that sucks! i have the same dang blow off valve, and i was wondering what that sound was. Im running 10psi with a t76.
I wonder if i put another one(have 2 total), if it would fix the problem?
I wonder if i put another one(have 2 total), if it would fix the problem?
#178
Member
iTrader: (5)
Join Date: Feb 2009
Location: Mt. Prospect IL
Posts: 102
Likes: 0
Received 0 Likes
on
0 Posts
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
Well its coming ok, but still cant richen up my WOT. I put vent tube extensions on today but didnt get to try them out because it started snowing. My cruise and idle are really good. Still have part throttle lean problems. Hopefully these hard vent tubes work. Ill keep u updated, how well did that carb u bought work out? How much tweaking did u have to do?
#179
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2007
Location: Mechanicsville Virginia
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Turbo Trans Am gta
Engine: 383 78mm turbo
Transmission: Th350 rmvb with brake
Axle/Gears: 9 bolt 3.45s
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
Yeah 2 bovs will deff do it. Luckily I didn't have to do any tweakin at all. Out of the box I got 12.5 to 1 @ wot and idle and cruise seem fine Kevin said to not tweak it and just up the rear jets a bit I'm at 68 front and 72 rear I'm gonna try 76 in the rear and see what happenes. I have 31 squirter in the front and 35 in the rear.
Good luck with ur tunning ive read great things about vent tube extensions. have you tried enlarging pvcrs?
Good luck with ur tunning ive read great things about vent tube extensions. have you tried enlarging pvcrs?
Last edited by noboostnogo; 12-01-2010 at 10:13 AM.
#181
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2007
Location: Mechanicsville Virginia
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Turbo Trans Am gta
Engine: 383 78mm turbo
Transmission: Th350 rmvb with brake
Axle/Gears: 9 bolt 3.45s
Re: Just another blow thru MP-T70 build thread
hey sorry for the late response i never saw this reply. I fabricated a small bracket that looks like a squared C one side mounts to the firewall the other is where the dipstick mounts too.
#182
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2007
Location: Mechanicsville Virginia
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Turbo Trans Am gta
Engine: 383 78mm turbo
Transmission: Th350 rmvb with brake
Axle/Gears: 9 bolt 3.45s
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
haha me neither this turbo v8 world is much different than what im used to (v6 and L4) i cant wait to see what itll do. Around me all the tracks are closed now so im debating on if i want to go to a dyno $100/hr sounds kinda high for some dyno pulls. So im still thinking about just waiting until test and tune or just bite the bullet and go to the dyno
#184
Re: Just another blow thru MP-T70 build thread
i want to go to a dyno $100/hr sounds kinda high for some dyno pulls.
100 bucks /hr is pretty good. its usually 100-120 an hour at most places around me. 60-70 bucks for 3 pulls sometimes.
#187
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2007
Location: Mechanicsville Virginia
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Turbo Trans Am gta
Engine: 383 78mm turbo
Transmission: Th350 rmvb with brake
Axle/Gears: 9 bolt 3.45s
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
Hope you guys had a great christmas. I did. I got some parts for my car. i got a 50mm BOV because mine kept on surgin at the lightest setting with a cut spring, i got a turbo blanket, i bought me a set of 200cc heads with 2.02/1.60 valves, i got some eagle rods and a scat 3.750 crank. My birthday is coming up so hopefully ill got some JE/SRP pistons... I havent even had time to play with my current combo and im already looking to make it better. I will not take my engine apart until something happenes or until next winter but i will have all the part ready for a 383 single turbo. Anyone know of any decent affordable 72-74mm turbos?
#188
Supreme Member
iTrader: (17)
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
im running a master power t76 with a .96 a/r on a 355..........so far so good with 14 lbs boost..........i am changing my manifolds to a different setup and fabbing up my own crossover and a 3.5" down pipe.........what heads did you get? im using dart iron eagle platinum 200's on my setup..........i also have a new blow thru carb in the works too
#189
Supreme Member
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
im running a master power t76 with a .96 a/r on a 355..........so far so good with 14 lbs boost..........i am changing my manifolds to a different setup and fabbing up my own crossover and a 3.5" down pipe.........what heads did you get? im using dart iron eagle platinum 200's on my setup..........i also have a new blow thru carb in the works too
#190
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2007
Location: Mechanicsville Virginia
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Turbo Trans Am gta
Engine: 383 78mm turbo
Transmission: Th350 rmvb with brake
Axle/Gears: 9 bolt 3.45s
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
im running a master power t76 with a .96 a/r on a 355..........so far so good with 14 lbs boost..........i am changing my manifolds to a different setup and fabbing up my own crossover and a 3.5" down pipe.........what heads did you get? im using dart iron eagle platinum 200's on my setup..........i also have a new blow thru carb in the works too
Could u do me a huge favor and take a measurement for me I just need to know what the diameter is of your t76 turbo compressor. I would really appreciate it I just know my t709 is gonna be too small for the new engine so i m lookin for somethin that will fit under the hood without redoin the headers.
#191
Supreme Member
iTrader: (2)
Join Date: Jul 2009
Location: morrow, ga
Posts: 1,354
Likes: 0
Received 4 Likes
on
4 Posts
Car: 82 S10, 83 280ZX, 84 Z28
Engine: 355 smallblocks..na, 2.8 turbo
Transmission: 85:th350, 84:700R4
Axle/Gears: 85:ford9 4.85, 84:stock 3.24
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
i love the handy dandy radiator tool tray.
#194
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2007
Location: Mechanicsville Virginia
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Turbo Trans Am gta
Engine: 383 78mm turbo
Transmission: Th350 rmvb with brake
Axle/Gears: 9 bolt 3.45s
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
Car ran a 11.89 @ 112mph with a 1.64 60foot.
#195
Supreme Member
iTrader: (2)
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
Nice... and I like the way the build turned out. not sure that i'm excited by your filter location (doing it like that gives you a lot of space to work with, but I'm not sure about how sucking in the hot air from that location, though I don't know that anyone has ever done a conclusive test with how much that effects power...
how are you supporting the front end/keeping it lined up with the hood/keeping it from flapping around?
Any more details than that on how the dragstrip pass went?
how are you supporting the front end/keeping it lined up with the hood/keeping it from flapping around?
Any more details than that on how the dragstrip pass went?
#196
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2007
Location: Mechanicsville Virginia
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Turbo Trans Am gta
Engine: 383 78mm turbo
Transmission: Th350 rmvb with brake
Axle/Gears: 9 bolt 3.45s
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
Nice... and I like the way the build turned out. not sure that i'm excited by your filter location (doing it like that gives you a lot of space to work with, but I'm not sure about how sucking in the hot air from that location, though I don't know that anyone has ever done a conclusive test with how much that effects power...
how are you supporting the front end/keeping it lined up with the hood/keeping it from flapping around?
Any more details than that on how the dragstrip pass went?
how are you supporting the front end/keeping it lined up with the hood/keeping it from flapping around?
Any more details than that on how the dragstrip pass went?
The filter setup i wasnt a huge fan of and will not be reusing it. I did cut out a huge hole in he hood and the filter sat right in front of the ram air piece.
For the hood the new upper radiator support is the same height as the factory one and the hood rests on there like it did before, i am holding it down with two hood pins.
So i left off where i ran 11.89. I did start a new thread talking about the time out at the track i ended up blowing a headgasket that day but was still very happy. I pulled the engine out and took the heads off, both gaskets were blown, cylinders 6 and 8 and cylinder 5 into water coolant. I am gessing either the stock hardware failed to do the job and both heads lifter or too much timing. I had the dizzy locked at 36* and brought it down to 20* at 7psi.
I had picked up a set of world sportsman 2 200cc iron heads off craigslist with springs for a roller cam for 350bucks, after about 20hrs of hand porting and polishing i am very happy with the outcome. I thought about getting MLS gaskets and putting in arp head studs and the new heads on but decided not too since the block was begging me for an overbore. piston to wall clearance was too loose.
i took everything apart, none of the pistons had any sign of detonation or any unusual signs of damage but one of them was missing a good portion of the tabs on the bottom which i ended up finding in the oil pan later, im guessing piston slap caused this.
So i bought all new parts to build a forged 383 stroker, everything is at the machine shop being put together, im getting the block checked out, squared, cleaned, new cam bearings and water plugs I have a scat crank, eagle h beam rods, srp -31 cc forged pistons, arp main studs, arp head studs, new milodon 6qt oil pan with baffles and windage tray. mellin select 10% higher oil volume pump, etc
Heads are being shaved, new valve jobs, CCd, etc and will post pics later
Cam is a hydraulic roller comp cams 234/234 .541/.541 114lsa custom grind. compression will be around 8.5:1 and im hoping this setup will make around 400hp at the flywheel.
I have sold the master power turbo 70mm and picked up a PT88. I will have to modify my turbo headers for this change or might sell it and start from scratch.
While i wait for the engine to be put together i have started doing some body work on the car since my front end was primed black after a fender bender.
i added some body filler to the radiator support to make it look better
enlarged these holes and used some more body filler
picture of the K-member and solid mounts
mounted my co-pilot, My borther has Luigi mounted in his race car and i have Mario
#197
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2007
Location: Mechanicsville Virginia
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Turbo Trans Am gta
Engine: 383 78mm turbo
Transmission: Th350 rmvb with brake
Axle/Gears: 9 bolt 3.45s
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
i should have it painted by the end of this week
and should have the engine ready by this week as well
and should have the engine ready by this week as well
#198
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2007
Location: Mechanicsville Virginia
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Turbo Trans Am gta
Engine: 383 78mm turbo
Transmission: Th350 rmvb with brake
Axle/Gears: 9 bolt 3.45s
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
heres is a pic of the wreck, this happened before i went to the track
what did i learn from this??? DONT LET POPS DRIVE YOUR TURBO TRANS AM
at the frame shop
and this is what it looked like before
Here is a couple pics of the car at the track
I also have a video fo the 11.89 pass but not on this computer, i will upload it later
what did i learn from this??? DONT LET POPS DRIVE YOUR TURBO TRANS AM
at the frame shop
and this is what it looked like before
Here is a couple pics of the car at the track
I also have a video fo the 11.89 pass but not on this computer, i will upload it later
Last edited by noboostnogo; 04-26-2011 at 08:14 PM.
#199
Senior Member
Thread Starter
iTrader: (4)
Join Date: Nov 2007
Location: Mechanicsville Virginia
Posts: 715
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 Turbo Trans Am gta
Engine: 383 78mm turbo
Transmission: Th350 rmvb with brake
Axle/Gears: 9 bolt 3.45s
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
I am hoping to hit ~700whp with no more than 15psi but i dont know if i will need some meth/water to get there
#200
Supreme Member
iTrader: (2)
Re: Just another blow thru MP-T70 build thread ***NEW PICS ON PAGE 4***
I figured that you did something like that with the hood, I was wondering what you did to keep the nose from flapping around since that is usually lined up with the brace mounted to the front of the core support and the flat panel over that, which you don't have...
I'm a bit surprised that you're convinced that you're running out of turbo so soon, people have gone a lot faster with even old school 76mm turbos. I'm considering trying a holset HX52 that has a 68mm inducer that I hope to run faster than that...
I'm a bit surprised that you're convinced that you're running out of turbo so soon, people have gone a lot faster with even old school 76mm turbos. I'm considering trying a holset HX52 that has a 68mm inducer that I hope to run faster than that...