Desperate for some Help With Microsquirt, Beyond Frustrated |
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Desperate for some Help With Microsquirt, Beyond Frustrated |
Mblizzard |
Aug 25 2017, 04:54 PM
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#1
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Advanced Member Group: Members Posts: 3,033 Joined: 28-January 13 From: Knoxville Tn Member No.: 15,438 Region Association: South East States |
I have been trying to get my conversion done in time for Okteenerfest. I have run up against a brick wall and just cant seem to figure out what i am doing wrong.
If anyone can help me by looking at my tune files or providing insight it will be very much appreciated. I can get th car to idle but nothing beyond that. Any use of the throttle is less than impressive and almost useless. Meaning it bogs down and does not accelerate at all. I have no clue what i am missing. 2056 with new low impeadance injectors. Bosch Wideband O2 sensor. Really need some suggestions. Not sure if i can post the tune files here. But will try. |
Mark Henry |
Aug 28 2017, 11:14 AM
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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 |
You're running to lean for an aircooled engine, I'd be aiming for 13.5:1 max, 12.5 is OK. The heads actually get some cooling from the cool fuel charge.
I can run 14:1 because I have nickies, but after that I start seeing a rise in head temps. I do agree the 134CC injectors are to small. I didn't look at charts for very long, but do you know what your injector duty cycle is? You should never run more than 80%. Also many injectors are designed to run at a certain duty cycle and do not perform well when they are out of their OE range. For example 914 L-jet 1.8 injector is somewhere in the mid 250cc range and they do not work well at all with aftermarket systems, where as 2.0 d-jet injectors are huge but perform well at almost any duty cycle. |
Mblizzard |
Aug 28 2017, 11:55 AM
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#3
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Advanced Member Group: Members Posts: 3,033 Joined: 28-January 13 From: Knoxville Tn Member No.: 15,438 Region Association: South East States |
You're running to lean for an aircooled engine, I'd be aiming for 13.5:1 max, 12.5 is OK. The heads actually get some cooling from the cool fuel charge. I can run 14:1 because I have nickies, but after that I start seeing a rise in head temps. I do agree the 134CC injectors are to small. I didn't look at charts for very long, but do you know what your injector duty cycle is? You should never run more than 80%. Also many injectors are designed to run at a certain duty cycle and do not perform well when they are out of their OE range. For example 914 L-jet 1.8 injector is somewhere in the mid 250cc range and they do not work well at all with aftermarket systems, where as 2.0 d-jet injectors are huge but perform well at almost any duty cycle. the 134 was at 50% |
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