Turbo 914 (1.8 type-4), Turbocharging my 1.8 type-4 for a school project... can anyone give me some advice? |
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Turbo 914 (1.8 type-4), Turbocharging my 1.8 type-4 for a school project... can anyone give me some advice? |
holtby914 |
Jan 11 2018, 09:21 PM
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#1
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Newbie Group: Members Posts: 42 Joined: 16-November 16 From: Ontario, Canada Member No.: 20,593 Region Association: Canada |
hello,
I am an automotive engineering student at the University of Windsor. I am trying to somehow incorporate the restoration of my 914 into my education somehow. After talking to many of my professors a few of them are suggesting I try and turbo the original 1.8l type-4 came in the car. I have the entire case completely apart, down to the crank, and am at the stage where I'm getting ready to start blueprinting this engine. However, it seems that turbo type-4's are not very common, and I do not seem to understand why. I am ready to take on the challenge, however, I would love some advice (combinations, etc.). I am thinking that I will keep stock crank and rods, and get some JE forged pistons (not sure of size yet). Was also thinking I port the stock heads. However, beyond that, i have planned anything. cheers, Blake |
Mueller |
Jan 11 2018, 11:27 PM
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#2
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None |
A few reasons turbos are not that popular on 914s that I can think of:
When the car had been brand new or even just a few years old, turbo technology just didnt have the best understanding. Heck even major diesel manufactures had N/A motors like Ford and Chevy and some big rigs. For the most part 911 engines literally just bolt up. And the bigger motors that don't directly bolt up have support from companies that sell the small required parts. For many back then and even now FI is like black magic. The stock EFI didn't play too nice with boost. Sure carbs can be made to work however that increases the cost and complexity depending on the design. Berg made a kit, it was expensive. For a few bucks more one could do an engine swap to a Chevy or the like. I don't think you will find that many other car models from the same era that has that many aftermarket turbo installs except maybe VW Bugs. With the value of the cars going up, many people are keeping them stock or just increasing displacment a bit. |
Mark Henry |
Jan 12 2018, 01:36 PM
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#3
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Berg made a kit, it was expensive. For a few bucks more one could do an engine swap to a Chevy or the like. I don't think you will find that many other car models from the same era that has that many aftermarket turbo installs except maybe VW Bugs. Gene Berg never made a turbo kit, and he never did anything T4. Maybe Bernie Bergman made a kit. Type 1 is easier to turbo as it has closer together, evenly spaced head studs. Big downfall with the T4 is the head stud arraignment, one reason Mark turbos the 1.7 because it has smaller ID cylinders, so therefore the cylinders have thicker walls. I'm sure some one has said "you can't turbo a 914", you can, it's even better now because of aftermarket FI/ignition, but the benefit to cost ratio doesn't make it a great choice. What I'd try to run by your instructors is build a MS (megasquirt) FI system, then build modified motorcycle ITB's and maybe also a single plenum/TB design and do a comparative study between the two intake systems. Below is a link to what I did for motorcycle ITB's, myself and many others here would help with any questions you have. http://www.914world.com/bbs2/index.php?sho...w=&st=& |
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