Putting FI back on a 2.0l |
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Putting FI back on a 2.0l |
Tdskip |
Oct 10 2018, 03:11 PM
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#21
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Advanced Member Group: Members Posts: 3,674 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
Thanks for all of the responses and considerations.
This 2.0l engine is out of the car currently. |
jcd914 |
Oct 11 2018, 12:35 AM
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#22
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Advanced Member Group: Members Posts: 2,081 Joined: 7-February 08 From: Sacramento, CA Member No.: 8,684 Region Association: Northern California |
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Tdskip |
Oct 11 2018, 06:24 AM
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#23
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Advanced Member Group: Members Posts: 3,674 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
How much do you trust what you were told? If it was rebuild and running on the stock FI before the switch to carbs then it still has a FI cam. Jim Hi Jim. Everything seems to check out from what I was told prior to purchase and then what I saw when I went in person to pick it up. Worst case, I suppose, is that I would put the carbs back on it. What happens when an FI system meets a carb cam? Earth spin backwards? Dog and Cats start sleeping together? Or just bad timing/fuel ratios? Thanks! |
jcd914 |
Oct 11 2018, 05:01 PM
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#24
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Advanced Member Group: Members Posts: 2,081 Joined: 7-February 08 From: Sacramento, CA Member No.: 8,684 Region Association: Northern California |
The cams with higher lift and longer duration and overlap create irregular intake vacuum.
The FI does not handle the vacuum pulses and irregular air flow very well. A mild carb cam you may just get poor idle quality and poor low rpm drivability. The more radical the cam the worse the FI handles it. Personally I would probably take the chance since the process is reversible. I might take the time to measure the cam lift, duration and timing. Good luck Jim |
914_teener |
Oct 12 2018, 02:19 PM
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#25
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914 Guru Group: Members Posts: 5,193 Joined: 31-August 08 From: So. Cal Member No.: 9,489 Region Association: Southern California |
The cams with higher lift and longer duration and overlap create irregular intake vacuum. The FI does not handle the vacuum pulses and irregular air flow very well. A mild carb cam you may just get poor idle quality and poor low rpm drivability. The more radical the cam the worse the FI handles it. Personally I would probably take the chance since the process is reversible. I might take the time to measure the cam lift, duration and timing. Good luck Jim You can measure both duration and lift with the cam in the engine. It will take some measuring...effort....and math. It can be done. |
Tdskip |
Oct 12 2018, 03:31 PM
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#26
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Advanced Member Group: Members Posts: 3,674 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
I feel another Tech Day topic in the making here...
Is there a how to guide I should be studying? Thanks! |
Tdskip |
Dec 26 2018, 01:56 PM
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#27
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Advanced Member Group: Members Posts: 3,674 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
It would be a rare person/circumstance to take off a perfectly functional FI system to change to carbs. You can be 99% sure one or more FI components are not working and will need replacement and its pretty easy to troubleshoot most of them. Finally got around to doing some testing on this specific set up and sure enough Jeff, the MPS is bad. I wonder if that was the only reason why it was pulled off? |
JeffBowlsby |
Dec 26 2018, 02:17 PM
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#28
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914 Wiring Harnesses Group: Members Posts: 8,439 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None |
Certainly would be a problem. I have the 043 MPS rebuilt and ready to ship also, just like the 049's.
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Tdskip |
Dec 27 2018, 08:53 AM
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#29
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Advanced Member Group: Members Posts: 3,674 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
Hi Jeff!
The one I bought from you for the 1.7 arrived already and is going in today -thanks! Still doing lake archeology on this one but I’ll ping as needed. Was a pleasure working with you, thanks! |
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