Turbocharging a type 4 |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
Turbocharging a type 4 |
stownsen914 |
Oct 12 2016, 02:04 PM
Post
#1
|
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 |
ThePaintedMan |
Oct 19 2016, 09:31 AM
Post
#2
|
Advanced Member Group: Members Posts: 3,886 Joined: 6-September 11 From: St. Petersburg, FL Member No.: 13,527 Region Association: South East States |
I think for the amount of engineering involved and the very real possibility that a type 4 with that much boost on it may still be a grenade, I would consider another watercooled Porsche engine, as Mike suggested. What about a turbo 944 motor, or even a 928 V8? Those things can make some pretty healthy and reliable HP numbers without nearly as much $ or time as it would take to make the TiV work. All you need is a radiator and some water lines (IMG:style_emoticons/default/smile.gif)
|
HAM Inc |
Oct 19 2016, 09:40 AM
Post
#3
|
Senior Member Group: Members Posts: 846 Joined: 24-July 06 From: Watkinsville,GA Member No.: 6,499 Region Association: None |
I think for the amount of engineering involved and the very real possibility that a type 4 with that much boost on it may still be a grenade, I would consider another watercooled Porsche engine, as Mike suggested. What about a turbo 944 motor, or even a 928 V8? Those things can make some pretty healthy and reliable HP numbers without nearly as much $ or time as it would take to make the TiV work. All you need is a radiator and some water lines (IMG:style_emoticons/default/smile.gif) That makes more sense (to me) than a roadrace turbo T4. But I'd love to see a well engineered and deep wallet turbo t4 build for a roadrace car. I'd like to see how it went and what tech was developed along the way. Been plenty of turbo t4 street engines, but they don't see the abuse a track car does. |
Mueller |
Oct 19 2016, 09:50 AM
Post
#4
|
914 Freak! Group: Members Posts: 17,150 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None |
I think for the amount of engineering involved and the very real possibility that a type 4 with that much boost on it may still be a grenade, I would consider another watercooled Porsche engine, as Mike suggested. What about a turbo 944 motor, or even a 928 V8? Those things can make some pretty healthy and reliable HP numbers without nearly as much $ or time as it would take to make the TiV work. All you need is a radiator and some water lines (IMG:style_emoticons/default/smile.gif) That makes more sense (to me) than a roadrace turbo T4. But I'd love to see a well engineered and deep wallet turbo t4 build for a roadrace car. I'd like to see how it went and what tech was developed along the way. Been plenty of turbo t4 street engines, but they don't see the abuse a track car does. Did Jake or you give up on the billet Type IV heads? Too expensive and small of a market I guess? |
stownsen914 |
Oct 19 2016, 11:36 AM
Post
#5
|
Senior Member Group: Members Posts: 928 Joined: 3-October 06 From: Ossining, NY Member No.: 6,985 Region Association: None |
On the engine type, it has to be either Porsche block or an engine type that was supplied in a Porsche. So an Audi/924 engine or a T4/914 qualifies, unfortunately T1 doesn't.
There is an option to do non-traditional engines like Cayenne, Macan, 928, 944, etc., but 2 things about that: 1. Switching engine/chassis type puts you into a different class (GTP) that basically no one runs in. 2. Doing a Cayenne, Macan, etc. probably would be even less economical than a T4, and at the moment those engines are not classified for PCA Club Racing. For those engines I'm not aware of off the shelf performance parts like camshafts, intake manifolds, etc. or that anyone has invested in learning how to extract power out of the heads. Breaking new ground sounds like $$$$ to me. If I could use one of those engines, I'd need it to make ~150 hp/L, which is where the modern engines seem to fall on the hp to weight index for PCA club racing. |
HAM Inc |
Oct 19 2016, 11:42 AM
Post
#6
|
Senior Member Group: Members Posts: 846 Joined: 24-July 06 From: Watkinsville,GA Member No.: 6,499 Region Association: None |
On the engine type, it has to be either Porsche block or an engine type that was supplied in a Porsche. So an Audi/924 engine or a T4/914 qualifies, unfortunately T1 doesn't. There is an option to do non-traditional engines like Cayenne, Macan, 928, 944, etc., but 2 things about that: 1. Switching engine/chassis type puts you into a different class (GTP) that basically no one runs in. 2. Doing a Cayenne, Macan, etc. probably would be even less economical than a T4, and at the moment those engines are not classified for PCA Club Racing. For those engines I'm not aware of off the shelf performance parts like camshafts, intake manifolds, etc. or that anyone has invested in learning how to extract power out of the heads. Breaking new ground sounds like $$$$ to me. If I could use one of those engines, I'd need it to make ~150 hp/L, which is where the modern engines seem to fall on the hp to weight index for PCA club racing. We started massaging Cayenne heads a few years ago. Much potential there. |
Lo-Fi Version | Time is now: 31st October 2024 - 05:31 PM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |