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: 913 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 |
falcor75 |
Oct 19 2016, 03:34 AM
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#2
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Senior Member Group: Members Posts: 1,579 Joined: 22-November 12 From: Sweden Member No.: 15,176 Region Association: Scandinavia |
If I was building a turbo setup for a track car I would do it like this.
Which tracks am I driving and whats the lowest revs I will use on track with the current gear /tire ratios. Lowest RPM will determine usable turbo sizes depending on how much you value boost out of those lowest speed corners. Take this data to the person thats going to tune the car and get their view on turbo size etc. Critical to use someone with ALOT of experience of different setups. A turbo doesnt care if its boosting an aircooled engine or a watercooled engine. I for one would choose a broad rpm range with boost over peak hp. An easy to drive car will yield the most consistant laptimes and let you focus on driving. Not sure it helps any but hopefully you've thought of this already. (IMG:style_emoticons/default/smile.gif) |
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