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poorsche914 |
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#1
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T4 Supercharged ![]() ![]() ![]() ![]() Group: Members Posts: 3,093 Joined: 28-May 09 From: Smoky Mountains Member No.: 10,419 Region Association: South East States ![]() |
EDIT Swapped out the engine with my 2056 so I could drive this car. I plan on installing a MegaSquirt system on the supercharged engine.
-------------------------------------------- After failing to get the supercharged T4 engine running properly with the progressive Weber originally installed, I am ready to go the Megasquirt route. In talks with the owner who had this 914 in the early/mid '90s, it has been determined that this setup has never run well. He had a euro auto shop tune it and they got it to run somewhat decent but never reliable. I am hoping a modern FI system will bring this unique build to life! Below is my MS parts list: MS Wiring Harness # # from thedubshop.net * already have from used fuel-only MS system I bought ** I need eight coil packs since I plan to use the twin plug setup *** I am thinking of going with (4) of the Lambda sensors (one at the end of each tube of the heat exchangers) so that each cylinder can be individually tuned. Is that something MS supports? Is it even necessary? From what I've read, for a stock setup it is not needed but I am thinking with the supercharger it may be useful. (IMG:style_emoticons/default/confused24.gif) Current SC setup is, from top to bottom: Carb > SC > Plenum > Runners > Heads The intake runners are modified runners from the single Weber kit - slight bends to fit from heads to center-mounted plenum box. My idea is to have stock runners similarly modified so that the new setup would be: TB (mounted on custom plate similar to how carb is currently mounted) > SC> Plenum > Runners > Injectors > Heads I am hoping a tunable fuel injection system is what this engine needs. And, if not successful, I will remove the SC and run the engine as a twin plug. Anything I am missing? Anything I don't really need? I am ready to gather together all the parts I need and start putting it together first of the year. EDIT: This particular project postponed til I have more time. Thanks! steve (IMG:style_emoticons/default/driving.gif) |
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Mark Henry |
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#2
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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 ![]() |
How's the engine? Best induction system in the world won't compensate for a fuched engine.
The reason mcmark sticks with the 1.7 is it has smaller head bore and thick cylinder walls for sealing, for a 2.0 head seaing won't like much boost. |
poorsche914 |
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#3
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T4 Supercharged ![]() ![]() ![]() ![]() Group: Members Posts: 3,093 Joined: 28-May 09 From: Smoky Mountains Member No.: 10,419 Region Association: South East States ![]() |
The reason mcmark sticks with the 1.7 is it has smaller head bore and thick cylinder walls for sealing, for a 2.0 head sealing won't like much boost. Today I talked to the original builder of the supercharged engine. I asked him how reliable this setup was. Short answer... not very (IMG:style_emoticons/default/sad.gif) One of the things he mentioned was too much boost on the 2.0 will cause leaking. So... now I am having second thoughts about getting the SC running. (IMG:style_emoticons/default/dry.gif) Going to put this project on hold for now. (IMG:style_emoticons/default/driving.gif) |
get off my lawn |
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#4
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Member ![]() ![]() Group: Members Posts: 168 Joined: 18-August 11 From: west coast Member No.: 13,462 Region Association: None ![]() |
The reason mcmark sticks with the 1.7 is it has smaller head bore and thick cylinder walls for sealing, for a 2.0 head sealing won't like much boost. Today I talked to the original builder of the supercharged engine. I asked him how reliable this setup was. Short answer... not very (IMG:style_emoticons/default/sad.gif) One of the things he mentioned was too much boost on the 2.0 will cause leaking. So... now I am having second thoughts about getting the SC running. (IMG:style_emoticons/default/dry.gif) Going to put this project on hold for now. (IMG:style_emoticons/default/driving.gif) I ran a 2 liter type at 7 to 9 psi boost reliably on the street and track and hit 15 psi boost a couple times by accident. No sealing problems. I just lapped the cylinders to the heads. around 6 or 7 psi was the sweet spot IMO. |
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