Turbocharging a type 4 Options

[stownsen914]

I have heard the conventional wisdom that "you can't turbocharge a type 4 successfully." Is it just difficult, or can it really not be done well? I'm tossing around the crazy idea of turbo'ing a type 4 for PCA club racing, to put in the chassis in my avatar. My 6 in its current configuration is not competitive, so I can put a bunch of money in that, or do something different. I like a challenge, so why wouldn't the following work?

- 1.8 or 2.0 type 4 as a base. I would keep displacement stock or close to it.
- EFI for induction
- Properly sized intercooler and huge oil cooler
- A good aftermarket cooling fan
- Would be dry sumped
- I would work with a knowledgeable builder or shop to build the engine. I am not so familiar with type 4 race modifications, but presumably this would include reinforcing the bottom end, using Carrillo, Pauter, etc. rods
- Obviously the heads would need to be reworked for flow and possibly reliability

If I do the above, could a type 4 be built to withstand 15 psi of boost and make 350 hp reliably?

Scott

[jd74914]

Scott, what limits do you have on engine controls? I'm just wondering if you could extend engine life with some fancier fuel/timing/boost control strategies based on EGTs, knock, etc.

[Mueller]

Scott, what limits do you have on engine controls? I'm just wondering if you could extend engine life with some fancier fuel/timing/boost control strategies based on EGTs, knock, etc.

How about water mist cooling like some if the 911 guys have done?

I think is called Coleman water cooling or something like that. Good for 10 to 15 minutes?

[stownsen914]

Scott, what limits do you have on engine controls? I'm just wondering if you could extend engine life with some fancier fuel/timing/boost control strategies based on EGTs, knock, etc.

No limits, at least not in the rulebook (IMG:style_emoticons/default/smile.gif) I don't have a bottomless wallet, but I would plan to use a quality engine management system if I do this project.

How about water mist cooling like some if the 911 guys have done?

I think is called Coleman water cooling or something like that. Good for 10 to 15 minutes?

I thought of this too. I believe it has been called the Rubbermaid solution for the brand name of the container you put the water in (IMG:style_emoticons/default/smile.gif). Popularized by a 914 guy, no less - Grady Clay, RIP. He used it on 911 motors at the track, and I assume on his 914/6 racecar.

I imagine you have to decide if you heart is into the project or the driving.

Yes, you've got me on that one. If I didn't like a challenge, I would not still be racing the 914. I'd have bought a spec Boxster!