Going from a single turbo to twins
#252
TGO Supporter/Moderator
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,786
Likes: 0
Received 94 Likes
on
79 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
Re: Going from a single turbo to twins
MS3-PRO, MS-Module (what I run) are surface mount. You have less chance of hardware failure, assembly issues, etc.
MS3-PRO:
What I'm running:
Old MS2:
Four years ago I do a writeup on how to use a MS module in a '165 ECM case for direct plug and play with factory harness, yet everyone still wants to run an MS2 and than complains when they have noise issues or component failure.
-- Joe
#253
Re: Going from a single turbo to twins
I just want to buy a box and plug a harness i made into it. Thats what ms3 pro seems to deliver for 1100$. But doesnt do low z injectors so points go to holley...but still more if going dominator to get the i/o.
Its a tough call
Its a tough call
#254
TGO Supporter/Moderator
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,786
Likes: 0
Received 94 Likes
on
79 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
Re: Going from a single turbo to twins
The injector drivers are limited to like 4.5 amps I believe. Low-z injectors were all the rage 15 years ago, but you can get 160lb high-z injectors now. Unless your making more than 2500hp, you will be fine.
-- Joe
#255
Re: Going from a single turbo to twins
It will do low z injectors, just need injector resistor packs. A lot of OEM cars work this way.
The injector drivers are limited to like 4.5 amps I believe. Low-z injectors were all the rage 15 years ago, but you can get 160lb high-z injectors now. Unless your making more than 2500hp, you will be fine.
-- Joe
The injector drivers are limited to like 4.5 amps I believe. Low-z injectors were all the rage 15 years ago, but you can get 160lb high-z injectors now. Unless your making more than 2500hp, you will be fine.
-- Joe
Hehe 160's arent enough
On a side note they do make id2000's in high z which are 205 lb, but they are 600$ more than siemens 225 low z. Unless my buddys can get me discounted dealer rates.... Fic also has 2150cc which gofor 1580$
The 205's at 75-80 psi base may do it
#256
TGO Supporter/Moderator
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,786
Likes: 0
Received 94 Likes
on
79 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
Re: Going from a single turbo to twins
But in all seriousness, if you're planning on building something that's more than 2500hp at peak, and will idle you should be thinking of staged injection.
-- Joe
#258
Re: Going from a single turbo to twins
The car runs much better now that I have switched to the Holley efi system. Almost finished fine tuning it but let me tell you....at 70 mph in 3rd gear I have no trouble matting the gas pedal and leaving over 200 ft of rubber down. I am also waiting for a dual fan controller setup which should be here by Wednesday since my existing one suck.
#259
Re: Going from a single turbo to twins
The car runs much better now that I have switched to the Holley efi system. Almost finished fine tuning it but let me tell you....at 70 mph in 3rd gear I have no trouble matting the gas pedal and leaving over 200 ft of rubber down. I am also waiting for a dual fan controller setup which should be here by Wednesday since my existing one suck.
#261
TGO Supporter/Moderator
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,786
Likes: 0
Received 94 Likes
on
79 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
Re: Going from a single turbo to twins
You've got exhaust gasses expanding at different rates traveling through a bunch of turns to spin a turbo. Your twins are more evenly fed, and a heck of a lot closer to the exhaust ports.
That's one of the reasons the banks manifolds work so well. Even flow, and a thick casting that keeps all that heat in to spin the turbo. The downside is they require on-center turbo's which are kinda expensive.
-- Joe
#265
TGO Supporter/Moderator
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,786
Likes: 0
Received 94 Likes
on
79 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
Re: Going from a single turbo to twins
I've got a TH400 in my '75 Stingray, and a T-10 (4spd) in my '79 Stingray. The '79 has some frame issues and is coming apart. I keep going back and forth in my head about leaving the TH400 in the '75 or sticking the T-10 in it.
-- Joe
#266
Re: Going from a single turbo to twins
Full manual th400 is still fun imo lol just cant beat their strength per dollar. Your basic stock shaft/gears build with upgraded clutch packs is good for 800-1000 hp all day long. And about 900-1100$ at typical shops
Singles do have alittle more piping but depending on the size of primaries and secondarys and if you heat wrap or not, and obvously turbine wheel size and ar housing, that will determine how well they spool.
Two smaller wheels in twins have far less inertia to move so generally will spool faster
Singles do have alittle more piping but depending on the size of primaries and secondarys and if you heat wrap or not, and obvously turbine wheel size and ar housing, that will determine how well they spool.
Two smaller wheels in twins have far less inertia to move so generally will spool faster
#267
Re: Going from a single turbo to twins
Full manual th400 is still fun imo lol just cant beat their strength per dollar. Your basic stock shaft/gears build with upgraded clutch packs is good for 800-1000 hp all day long. And about 900-1100$ at typical shops
Singles do have alittle more piping but depending on the size of primaries and secondarys and if you heat wrap or not, and obvously turbine wheel size and ar housing, that will determine how well they spool.
Two smaller wheels in twins have far less inertia to move so generally will spool faster
Singles do have alittle more piping but depending on the size of primaries and secondarys and if you heat wrap or not, and obvously turbine wheel size and ar housing, that will determine how well they spool.
Two smaller wheels in twins have far less inertia to move so generally will spool faster
#272
Re: Going from a single turbo to twins
1000 On 70 lb injectors? No way
14 psi on a strong 355 should be near 550-600whp, maybe bit more. Seen strong 383 make 520 on 8 psi thru a stick shift. My twin 70 400 with afr 195's made 640 on 12 thru the auto 400. Thats 700-720 thru a stick, and that was 80% dc on 80 lb siemens
14 psi on a strong 355 should be near 550-600whp, maybe bit more. Seen strong 383 make 520 on 8 psi thru a stick shift. My twin 70 400 with afr 195's made 640 on 12 thru the auto 400. Thats 700-720 thru a stick, and that was 80% dc on 80 lb siemens
#273
TGO Supporter/Moderator
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,786
Likes: 0
Received 94 Likes
on
79 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
Re: Going from a single turbo to twins
1000 On 70 lb injectors? No way
14 psi on a strong 355 should be near 550-600whp, maybe bit more. Seen strong 383 make 520 on 8 psi thru a stick shift. My twin 70 400 with afr 195's made 640 on 12 thru the auto 400. Thats 700-720 thru a stick, and that was 80% dc on 80 lb siemens
14 psi on a strong 355 should be near 550-600whp, maybe bit more. Seen strong 383 make 520 on 8 psi thru a stick shift. My twin 70 400 with afr 195's made 640 on 12 thru the auto 400. Thats 700-720 thru a stick, and that was 80% dc on 80 lb siemens
The turbos flow up to 70lbs/min each. Do the math..
-- Joe
#277
Re: Going from a single turbo to twins
I would place the math at low 800's fly wheel, 660-700 whp in best case scenario which isnt to far off from where hes at now. 40-42 lbs min and 2.0 pressure ratio.
They have the potential to make 1200 whp on the smaller cubes in a stick shifter. I made 1009 sae on a pair thru a big stalled auto and more cubes and i dont think they were done yet
They have the potential to make 1200 whp on the smaller cubes in a stick shifter. I made 1009 sae on a pair thru a big stalled auto and more cubes and i dont think they were done yet
#278
TGO Supporter/Moderator
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,786
Likes: 0
Received 94 Likes
on
79 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
Re: Going from a single turbo to twins
I would place the math at low 800's fly wheel, 660-700 whp in best case scenario which isnt to far off from where hes at now. 40-42 lbs min and 2.0 pressure ratio.
They have the potential to make 1200 whp on the smaller cubes in a stick shifter. I made 1009 sae on a pair thru a big stalled auto and more cubes and i dont think they were done yet
They have the potential to make 1200 whp on the smaller cubes in a stick shifter. I made 1009 sae on a pair thru a big stalled auto and more cubes and i dont think they were done yet
-- Joe
#279
Re: Going from a single turbo to twins
I managed to install the new flywheel and clutch tonight . Man the Lakewood bell housing is pretty heavy along with the Tremec tko600. Hope to finish up the install tomorrow evening.
Last edited by Badass355ciz28; 07-26-2016 at 11:04 PM.
#280
Re: Going from a single turbo to twins
I would place the math at low 800's fly wheel, 660-700 whp in best case scenario which isnt to far off from where hes at now. 40-42 lbs min and 2.0 pressure ratio.
They have the potential to make 1200 whp on the smaller cubes in a stick shifter. I made 1009 sae on a pair thru a big stalled auto and more cubes and i dont think they were done yet
They have the potential to make 1200 whp on the smaller cubes in a stick shifter. I made 1009 sae on a pair thru a big stalled auto and more cubes and i dont think they were done yet
#281
TGO Supporter/Moderator
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,786
Likes: 0
Received 94 Likes
on
79 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
Re: Going from a single turbo to twins
When I was running that T5 I got from you I used the Ram billet flywheel and 6 puck ceramic clutch. I had the P1SC though so I don't think it woulda made more than 550-600hp.
I'm torn about th400 or T10 in my '75 Vette. I've got both setups, complete.
You planning on getting that up the track this year? It's too hot right now, but I figure September and October will be nice.
-- Joe
#283
TGO Supporter/Moderator
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,786
Likes: 0
Received 94 Likes
on
79 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
Re: Going from a single turbo to twins
If you do manage to get up to Epping let me know so we can hang out. It's only 20 minutes from my house. Maybe by the fall I'll have something that actually leaves the property. (doubt it though)
-- Joe
#294
TGO Supporter/Moderator
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,786
Likes: 0
Received 94 Likes
on
79 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
Re: Going from a single turbo to twins
One of my circle track buddies (as I'm sure you know, NH is nascar country) was trying to convince me to use on of their multidisc clutches when I started doing the Firebird. You could look into that. Big money though.
-- Joe
#297
Re: Going from a single turbo to twins
So far with the new clutch the car has been running well. Pretty much rebuilt the front suspension as well( new struts and mounts,new ball joints,new 36mm front sway bar with new bushings and end links).
I am running a safe tune until the clutch is broken in and I still enjoy how the car pulls. On another note I may end up changing out the down pipes to an x pipe with rear exhaust. I will try to post some pictures of the car this weekend.
I am running a safe tune until the clutch is broken in and I still enjoy how the car pulls. On another note I may end up changing out the down pipes to an x pipe with rear exhaust. I will try to post some pictures of the car this weekend.
#298
Re: Going from a single turbo to twins
Not much to report as of late. Its getting colder here in Mass so I haven't done much with the car. I also ruptured my right bicep a few weeks back and will be going in for surgery next week. 3 months of being out of work too once the surgery is completed then probably back for light duty only. I probably wont be able to start on the car again until Spring time(optimistically) so I'm kind of bummed out right now.
#299
TGO Supporter/Moderator
iTrader: (12)
Join Date: Jul 1999
Location: SALEM, NH
Posts: 11,786
Likes: 0
Received 94 Likes
on
79 Posts
Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
Re: Going from a single turbo to twins
Not much to report as of late. Its getting colder here in Mass so I haven't done much with the car. I also ruptured my right bicep a few weeks back and will be going in for surgery next week. 3 months of being out of work too once the surgery is completed then probably back for light duty only. I probably wont be able to start on the car again until Spring time(optimistically) so I'm kind of bummed out right now.
I gotta go in Nov 5 for 3-4 days to fix my ticker. But the recovery should be quick (unless they screw up).
-- Joe