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Old 05-11-2018, 07:17 AM   #372 (permalink)
Gasoline Fumes
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CRXFi - '88 Honda CRX XFi

Insight 256 - '00 Honda Insight
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Insight 5342 (no IMA) - '00 Honda Insight
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Quote:
Originally Posted by California98Civic View Post
With my head at the machinist through the weekend, I am working on two or three ecomods. Reinstalling a slightly rebuilt set of wheel skirts, removing and modestly redesigning the side skirts, and most importantly trying to learn if there is a way to do a "fuel economy" or low emmisions valve lash adjustment when I put the head back on and must adjust the valves.

I think tighter lash on both the exhaust and intake will produce longer, earlier, and later openings of the valves and increase overlap. What do you think? A reduced gap between the rocker and the valve stem means longer duration of the opening, with earlier opening and later closing, I think. Overlap is good for scavenging.
I set my lash with my biggest feeler gauge. Works well if you drive at very low RPM. Overlap and longer duration is good for high RPM power. Try both ways and see what works better.
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2000 Honda Insight
2000 Honda Insight
2000 Honda Insight
2006 Honda Insight (parts car)
1988 Honda CRXFi
1994 Geo Metro

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