Im talking 4000 for the whole thing....

 

Are you going to remove the AC from your 91?

 

Im gonna have to try and work around that..... I really dont want to get rid of it....Im gonna have to figure something out..... What is the difference between mine and the 87 ??

 

Oh, my bad. Anyway when you do use Forced induction do you have to mess around or alter the vacuum lines? And how will I do that? SO kevin your not going to go toward a Supercharger anymore? :D :chevy :confused:

 

My 90 is the same as your 91.

The 87 sits in front of the passenger head. It looks like the AC lines might come out a little bit. Our AC compressor takes up all the room that the turbo would be at. You can tell by looking at this picture, then looking at your car.



Where his intake pipe on that passenger side turbo is at, our AC compressor takes up all that space.

I had a few ideas, not sure what will work. I need the AC since it is usually hot here and my car is balck in and out.

1. Convert to the 87 system.
2. See if the stock compressor can fit above the valve cover (and not have a belt issue)
3. Mount the old style AC on the front of the water pump pulley, and move the Alternator where the smog pump is. Or vise versa.
This would allow me to go bigger on the turbos, and use a different exhuast manifold design which I have discussed with ex-gold a little bit before. I'm not sure if I have the room though.

 

How exactly did he get the Tubes from the Turbo charger to the Intercooler? :confused:

 

Looks like he goes down before the radiator and connects into the intercooler from below the radiator shroud. this shouldn't be too much trouble.




[Modified by bill mcdonald, 11:57 PM 2/9/2003]

 

You can check out all the pics here.
http://www.twinturbovette.net/Misc%20Pictures.htm

 

Thank Bill, now I just need to build it :yesnod:

 

I think that if we were to change over to the 87 AC system the would work.... Shouldnt be too bad.... Also, one more thing I was looking at was, In my 91 the Radiator fill cap/resivuor is over there too.... Im not around my car right now to look but will the angled radiator pose a problem as well??

Im really sarting to think this is very possible..... With everyone working together like this... :thumbs:

Im gonna start looking around and learning some more about the older AC system....

The tubing to and from the inercooler should be cake (reliative to everything esle)...

What did you guys think about the FMU frmo the supercharger systems for now? Use that for when there is more boost it adds fuel pressure accordingly... Yea Ofcourse a DFI or FAST system would be optimal.. but for right now.... I think this would sufice jsut fine.... Any help?! WHy this would/wouldn't work?

 

The raditor fill is on the other side of the Ac box, Next to the hood latch, it's not a problem.

What is it that you are worried about the slanted radiator? Intercooler clearence? The LT1's are pretty much the same, and they have the intercooler mounted above the radiator shroud on the ATI blower kit.

A guy names Shalin was on this forum a few years ago, he had a supercharged LT1 which made 545 to the rear wheels. He had an FMU on his car and it failed, blowing his engine up. after this he stopped using the FMU and learned how to program chips, and is very respected as a chip programmer now.
After talking to him, I was convinced to never even look at an FMU. When you cheap out, some things cost more later.

 

Bill do you have a contact # for shalin? i would like more info on getting rid of my FMU and go all on my cpu!

 

Last email I have from him was blownc4@yahoo.com, this was about 3 years ago.

 

Ok... Im going to have to figure something out fo rhte A/C then.... Yea I could probably get away with ripping it out... but so can anyone else.... Its not cool when you just rip stuff out... You know you did a great job when everything still works youknow what I mean...... Ill have to start doing some creative thinking.....

 

I dont want to loose the AC. at that point, I think I would rather buy a beater C4 and make it a boderline race car. But I would probably drive the race car everyday... :crazy:

 

Okay so far we have covered the Exhuast manifold Porblems and are already over that, we already discussed the Intercooler tubing here and there issue. :D

Now we need to talk about the heat guards and keeping the heat away from parts that we dont want see fry up. The hood needs to be protected by the turbos heat because it will sit so close to the hood, also we have to keep the Turbo heat way from the Brake Booster I guess and maybe the firewall. So could you just put a heat shield over the turbo and put it on in a way that the heat goes down and not up into the Fiberglass hood causing damage?

Another thing is When I checked my Car from underneath the hood, their is very little room for the U bend pipe to come up past the headers, The Headers are really close to the Frame, and I dont think 2.5inch round exhuast U bend tube would fit there. The only spot I found which It could go through is at the end of the block, between the 3rd and 4th Cylinder exhuast port is the only spot I found to have enough room to allow a U bend pipe to come up. How do you bring the pipe up then? IN the pic the pipe comes up near the front of the engine and has room, what parts did he take off or move to allow it to pass though???? :confused: :confused:

 

yea... I have all 3 pictures up... The turbo from that side, The 85 fromt that side and the 91 from that side...... The 90-91 unit seems to just take up so much more space..... Its much bigger and out away from the block whereas the earlier one is smaller and up by the valve cover.... Thats what is giving him the space to mount the turbo and come around with the intake tube....

Does anyone know if he had to modify the hood in anyone underneath.... I wonder how much room we are working with under there

 

My 84 setup is out of the way And I have enough room for that, But I guess your going to have to get some 87 parts---Maybe you could find a wrecked one and pull it off of it or if you want to hand over big Dough you could always buy new :yesnod:

 

Light 84, if you copy what Ex-gold did, you should have the heat sheild covered. Monty also posted a while back about a set of $70-75.00 sheilds that went over the turbos exhuast housing. this along with ceramic coating on the outsides of the tubing should help a bit.

What you need to worry about is the spark plug boots. I have vids of Ex-golds car on the dyno, the exhuast is glowing red, and there is very little room for the spark plug boot clearnce. He has metled a set of boots. A solution may be to use ceramic spark plug boots, which I have on my L-98 now. (AFR heads and stock manifolds were a problem)

The stock manifolds do not have enough room to do the U bend (someone mentioned using these a while back), that is why the block huggers are on his motor.

 

HUMM,yes your right, THe way he did it, its like the U bend comes up from near the front of the engine which I have no room right now with the manifolds that are on right now. SO I will just have to fork over for Hugger headers, but In the middle of this thread I heard that the stock ones are pretty thick compared to the 16 guage and should be good enough and just add a coating.

:jester I'm really thinking of doing this more and more on my STock Engine right now and only run 8 PSI just for now for a little run :jester And then later on change the drivetrain and engine and have some more fun by turing up the boost :jester