A few snap shots of the work in progress.
Relocated the upper radiator hose due to belt clearance issues. Now working on proper rear bracing for the blowers and on to ducting.

 

Side shot.

 

:hail: :hail: :hail: :hail: :hail:

thats awesome...looks great!!

i want i want....how much hp gain are u expecting??

 

nice job

 

Not sure actualy. Grumpy and I have done some calculations, in current pulley ratio that it should develop 13 psi.

83 CrossfireTA bro has a single ported M90 overdriven pushing 10 psi into a 5.0L ford. Which should give me more potential down the road. :rockon:

 

hey,

where are you mounting your brackets too? exhaust flanges?

 

what car is that in? look like a Malibu or elk...about 82 ish:hail:

 

Front is mounted to the accesory brackets on each side. Rear of each plate are mounted to brackets welded to the headers. Also brackets from the lower intake to the rear of the mounting plates. This provides three points to prevent flexing. New belt is 100K6 (2 inches longer than a stock belt).

 

An 80 Malibu coupe... but yes I'm using a 82 4 headlight header panel.

 

Shoot Bob, that looks pretty bitchen. When you figure you going to have both on line?

BW

 

kick ***.. so how much this project costing you? and where can i get the the "how to" book when ur done

 

About 800 clams for the whole smash.

Biggest problem would be room under the hood of a thirdgen.

Other than that is just biulding mounting plates off the accesory brackets and bracing the rear. Move the alternator to where the smog pump was. (its a bloody bolt in, with 1 strap to make). Rest is plain ol fabrication of pipes and brackets, and relocating the radiator. cheers, Bob

 

a shot of the front...

 

Good work bob!! Congratulations!

 

Im prolly the only one with this quesiton but...

wheres the air coming from, and wheres it going? I know your havnt added the ducting yet, but it appears the air has to enter through either the top or bottom... and exit either through the top or bottom....

now from the looks in the picture, the eatons are sitting on top of the heads with little or no room for air to exit OR enter...

Of course you have it all figured out, im just expressing my question how I see it happening, and how exactly do you plan on making it work?

 

Air enters the rear of the Blower. The pic below shows the intake I made bolted to the back. Plans are to have a 3" diameter U shaped pipe crossing over the top of the intake between each blower. Then removing a section from half the pipe just over the intake and have a box to hold 2 TPI IROC style filters. The hood is going to have 2 scoops from a turbo t-bird mounted into it and a upper box to direct the air into the filters. Kinda hard t explain..But there will be plenty of pics as I build it. New tops for the blowers are planned, ducting will run forward to the intercoolers alongside the radiator.

 

This looks like its going to haul serous butt!

What are you expecting from the project Saturn5? I would seroulsy think a mild cam and these twin eatons should go mid low 11's easy and have the torque to make a great daily driver.

 

It’s hard to tell the exact boost because you get a pulsing from as the air comes out of the lobes, and I believe that he’s got some belt slippage issues. With the single ported eaton he’s run mid 11’s at 120mph in a 4 door LTD on Goodyear RSA’s and some BFG KDW’s. We’re both convinced that he’ll eventually get it down into the 10’s in the mid 120’s, but for different reasons (I’m convinced that he’s loosing 50-100hp to belt slippage right now, he thinks that he’s going to find it through porting and better exhaust). His setup isn’t intercooled either, but between the aluminum heads and low 8.x:1 compression he runs something like 34* timing and no retard with no detonation on pump gas. We’ve even driven it around on 87 octane with no signs of knocking. Either way, he also has some slicks to try now, he finally installed legal lugs and softer front springs to get some traction and I started welding the 6pt in today…

Saturn, depending on tuning you should have enough blower on there for close to 1000hp if you want to spin them as fast as my brother is, and at least 9’s at around 140mph or so.

 

I did some calcs with Desktop Dyno and results were almost 600HP and 550 pounds foot of torque with the 305 and stock heads. Some track and tuning will show how close or off that is.

Close to 1K horse potential eh? Hmm... coming to get you Monty!! Seriously tho, a new engine is going to be built.
Something tells me the ol 305 is about to grenade.. :sillylol:

Crossfire, do you have any pics of the porting on your brothers unit. Like to compare yours to Mike's porting pics.

I'm worried about belt slippage too. I may have to add an idler pulley between the drivers blower and the power steering pulley to get more wrap. Are you finding bits of belt after a run? I've heard thats common from belt slippage. (will find out if mine is slipping soon.) Anyways, this has been an interesting experience adding these guys. Should bring a few stares at the car shows this summer.. hehe. cheers, Bob

 

screen shot of DD2K.

 

I know this is alot different than a '95 Mustang with an ATI P1SC, but we had a belt fly off on the dyno a couple times.

The belt that's on there now has the stock tensioner maxed out to the fully loaded position. Anything looser and it would either do a "belt burn-out" or it would pitch it all together. The belt burn-out would leave powdered belt all over the place. We never got it to do a smokey one tho

You look like you know what you're doing but I think you could install a couple idler pulleys in key places to maximize belt to pulley contact. Looks like if you cinched the belt in on the drivers side blower either by pushing the belt down or pushing it towards the passenger side it would do some good.

 

Cant you go with a cogged belt to eliminate slippage? or would that actually hurt performance by forcing the engine to turn a fast revving supercharger....

 

Like I said, 1K with the cases cleaned up and really spinning them. My brother has to be in the 500hp range to run the times and mph that he’s running in his car with one, and power production is entirely dependant of the amount of air that you force into the engine with the correct amount of gas. In my brother’s car’s case, the blower is being spun to 18,200rpm at redline (2.8:1 pulleys and shifted as the tach crosses 6500).

I don’t have pics of the porting on his case. The case started as one of Mike’s cases, and at one point we just sat in the basement taking turns grinding on it. The data logs showed right around a 2psi average increase in boost between how it was when we got it and after we finished cutting it. If you snap some pics of the inside of one of the cases looking from the front toward the inlet and maybe a second of the outlet I could probably draw in what was blended/cut.

Belt slippage… well, right now he’s got a little over 180* wrap and the best indication of what is happening is that the inner fender next to the blower pulley is constantly covered with rubber, kinda like your quarters get while doing burnouts. He tried using some hair spray to make things stickier on the dyno and pretty much succeeded in shredding the belt (It was throwing whole ribs off at a time). There doesn’t appear to be a misalignment problem, and he keeps telling me that he’s fixed his slippage problem, but I don’t know what he did and I’m not sure I believe it.

 

A cogged belt would help but that would also involve building a completely custom set of pulleys and tensioner for it, plus spending the $$$ on a cogged belt. Quick guess (haven't actually priced it) it would run more then the rest of the setup did

 

Is one M-90 able to supply enough air for an LT1 ?

 

Yes if you spin it up enough, with some porting and roughly a 2.8:1 pulley ratio you should be able to see about 500hp (400 or so at the wheels). OTOH, that thing winding that hard is awesome loud… I’d seriously consider an M-112 or 2 M-90’s

 

I dont think so but the 110 would probably