Turbocharging a type 4 |
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Turbocharging a type 4 |
stownsen914 |
Oct 12 2016, 02:04 PM
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#1
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Senior Member Group: Members Posts: 928 Joined: 3-October 06 From: Ossining, NY Member No.: 6,985 Region Association: None |
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 |
Andyrew |
Oct 13 2016, 10:42 AM
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#2
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Spooling.... Please wait Group: Members Posts: 13,376 Joined: 20-January 03 From: Riverbank, Ca Member No.: 172 Region Association: Northern California |
I dont see you making 350hp in a type 4 for any less than a 3.6L conversion. And thats pretty close to that...
I would 100% just run a 3.6 instead. |
stownsen914 |
Oct 13 2016, 12:14 PM
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#3
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Senior Member Group: Members Posts: 928 Joined: 3-October 06 From: Ossining, NY Member No.: 6,985 Region Association: None |
Thanks for the thoughts, guys. I'm giving this some thought because I like a challenge and wondering if it's possible if done correctly. Definitely not looking to do a 3.6 conversion, or a Chevy or Suby conversion. I have a 2.7L 911 race motor in the car now that needs a rebuild, and I'm toying with the idea of a turbo 4 instead of putting the $$$ to make a 911 engine competitive in PCA club racing.
I do understand that a type 4 turbo will not be a cheap venture. I am wondering whether it can be done, if done right. It sounds like the heads are a limitation. I've heard that there are some fresh castings being done these days. Are those heads designed to address the limitation that HAM mentions above? |
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