lacast

Hello,
I am an owner of a 1982 928 (Guards Red). My cousin has this setup on his 99 vette.

Bill Ball

WHOA! There's a lot in that one photo that I don't understand. Reversed exhaust, etc.

lacast

I believe only 3 or 4 people has this setup in the world and he is one of them. I have to go but I will put more pics.

Mike LaBranche

Remind me not to invite him to a contest of speed...

Herr-Kuhn

Too bad the 928 doesn't have that much room!

cobalt

How is the spool up time? Looks like an awful long distance to run the exhaust to the turbos. They are small units so this may help, but i would think lag must be an issue for street driving.

Kaz

Long distance? The headers are reversed and feeding directly into them. Look at the picture again.

cobalt

It looks like about a foot and a half to me, could be more depending on the location of the exhaust ports. About the same as my 94. The newer turbo designs are running considerably less distance to help reduce lag. Just a thought.

Bill51sdr

Can't help but wonder if it is possible to insulate that hood enough... I have visions of a meltdown under heavy use, turbos glowing red-hot, etc.

cobalt

They make insulator jackets that cover the turbos that can be used. It looks like the turbos were ceramic coated for heat. Although I was thinking the same thing myself and the setup is very close to the intake and radiator which is going to burn up those turbos rather quickly. There are also no intercoolers and IMO you may gain hp but the setup will be short lived, although the work is impressive. Power is great but reliability is most important in my book.

cobalt

Actually with another look the turbos are water cooled and it is possible they placed intercoolers in front of the radiator which would make a big difference.

I would be interested in some specifics of this set up.

Imo000

COBALT,
Try to look a little closer next time. It is clearly visible that the turbos feed into an intercooler. I looks like it's an air to air unit.

The blow off valve is located right at the front of the the engine. Right as the intake pipe turns towards the engine. These turbos don't have an internal waste gate. They are
located right after the meeting of the tubes with the collector pipe. Very visible on the right bank.


The inverted long tube headers are a very nice way of installing the turbos. However cast iron manifolds are more durable but they flow alot less than tubular headers.

This picture must have been taken before the installation is compete. Two of the left bank spark plugs are not connected (they are right behind the collector pipe) and at least one of the right ones isn't connected either (wire end located right on the turbine housing, next to the alternator pulley). Also, the front two coils don't have the spark plug wires connected either.

In all, it is a very nice, clean and compact setup.

tammons

This is the chevy setup I always liked.

http://www.bankspower.com/Twin-Turbo...tquarte-lg.jpg

cobalt

I agree it is obvious that the installation is not complete, or work was being performed. The plug wires are also not connected. I really had to look hard to see any evidence of an intercooler. It was not so obvious the first time I looked. You will notice I mentioned it in my third post. Although it is not clear to the size and how efficient it would be based on its proximity to all the surrounding heat generated by turboed engines. I do not see any auxiliary fans to help disipate all the additional heat generated by this setup. Although this picture does not tell the entire story.

I was not saying that the workmanship or the work in general was not impressive. It is top notch. Based on what I have observed I would expect some lag to be generated by this design. I may be wrong and was just curious to how it actually performed.

Bill Ball

Heh, heh. Even little old me noticed the plug wires dangling. Wonder how long they last anyway. Wouldn't it be like a blast furnace under the hood?

Where can you have intake pipe fabricated? I'd like to have some of that red stuff on my Supermodel.