You too can build your own turbo system
 

I was telling Sonnett about this thread earlier so I thought I would shar it with all of you. Take the time and read through the whole thread, its only two pages long and well worth it IMO. This kid builds his own turbo system at home using swimming pool parts and no engine management. It is great!

Home Made Turbo

Yeah he built it, but can't drive it? I wonder why?

When I was a kid, a friend bolted up a helicopter turbo to a Scirocco. It too was "rigged", but with hard pipe. It was quick once spun up, until the motor scattered a month later.

Looks great on stickered rice, would be a farking crime on a 928.

That kid has been driving that car since november. He had a problem with his rigged boost controler and was boosting at 15psi when he thought he was at 12. The engine is now knocking. LOL

Its kinda rough, but way to learn stuff.

No comment is the best comment sometimes. :)

I really do like the clear tube on the intake, maybe light it up with some LEDs that change color.

Until you actually try something I think most people don't fully appreciate how hard it can be to make a functional system that also looks nice.

OK. How about these?

http://forums.pelicanparts.com/uploa...1182484108.jpg
http://forums.pelicanparts.com/uploa...1182484202.jpg

I just doesn't look "Porsche" to me, needs a layer of oil on the bottom. ;)

Don't those turbos cook some hoses in that location?

I'm not looking forward to posting the first pictures of any of my own projects. I still have a limp from the reaming I got over my rubber ducky antenna, but I like it a LOT more than the pesky stock unit going up and down.

The twins have been removed and are being relocated to the manifolds. Not because of hoses but because of fear that the timing belt may get cooked. This set up was "cooked" up by Don Berry in Kissimmee, FL.

The top pic is of a car that I am not familiar with. I have alot of build pics of the car but I have no info as to who owns it or how it is doing.

That made me laugh. I remember that thread. It started out with H saying "Hmm, not for me" and before long it was spiraling out of control. I'm sure it is more functional than the stock but it just looked a little out of place. There is a rubber antenna that is shorter than yours. It is only about 4 or 5 inches tall. It looks nice.

I contemplated that design, but excess heat, & lack of plumbing space on the driver's side, + WHERE's THE A/C compressor? :)

Not in Texas, I love my cold AC. Pass.

Also, two other things: no access to work on the front of the engine, those turbos will cook all the rubber/plastic components on the front of the engine: shorter belt life, ruptured radiator hoses, & adding even more weight in the nose of the car: pass. I'd also think that the added heat collection would cause hotter running conditions: the 928Turbosports kit does the opposite: reduction of engine bay plastic/clutter, more air circulation, noticably cooler running conditions on your temperature gauge.

Mark (that's my opinion & I'm entitled to it. :)

Fabio Those are my old callaway manifolds that he is using with t3 or t4 turbos on them.

No, this was a homemade setup that he made. He still needs to weld a new flange on the callaway manifolds in order to make them work with his turbo's.

I spoke with him today. He's putting the finishing touches on a built ricer for his step son. 20 psi.

The best place for the TCs on a 928 is at the low and back position just aft of the No. 4 and No. 8 cylinders. This gives quick light-off and packages pretty well. Poeple often make comments about how you need a particular manifold design for effective TC operation. There is an article in one of the latest Chevy power magazines of a Gale Banks 1100 HP twin turbo Chevy wearing simple cast iron log manifolds...gotta love that.

I had seen those yellow TT pictures a while back...looks pretty thrown together to me. I also agree with the comments on A/C. It gets pretty nasty here in the summer months too.

I hope Don is able to use the old Callaway parts I sold him last year.

Don has his plate full right now but he is planning on using them soon.

Do you still have any 16v manifolds or jigs for 16v manifolds?

I have the jigs for the 16V, but they are not to my standards for production. I think a carbon copy of the 32V manifolds adapted to the 16V would be the best choice considering all factors. I still plan to do this some time in the future for the Callaways (both of them).

The problem with engineer types like me is we never stop trying to make things better. I finally feel like I have reached a point in the manifold design that is perfect for the 928...that means compact, powerful and easily fitted to the engine. I'm considering getting the 32V setup done in cast iron for production purposes.

Any comments on the bellows used in the 32v manifolds?

Exhaust manifolds, between the front two ports and the rear two ports in the main portion of the "tube". Its some kind of expansion thing I think.

That is there to allow the manifold to flex during expansion and contraction due to temp.

What a lot of people forget is that stainless expands about 50% more than mild steel. You don't need that joint if the manifold design accounts for thermal expansion properly. That joint is also there to aid in manufacturing of the stock manifolds...it gives some compliance between the two branches of the manifold, thus taking some of the complexity out of the entire fabrication process. The best TC manifold is still a cast iron piece...dimensionally stable, low alpha and cost effective...and they can be made to flow very well too.

Its much easier to weld stainless than it is to weld a casting.