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Old 09-25-2015, 01:10 PM   #295 (permalink)
pgfpro
In Lean Burn Mode
 
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MisFit Talon - '91 Eagle Talon TSi
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Quote:
Originally Posted by BabyDiesel View Post
Absolutely. I really don't think I have been in lean burn yet lol. Tygen1 told me that without the WB O2, I can't see if I am just killing power or in lean burn. Driving blind, just like before I got a ScanGauge! I know that I need to aim for 16.5:1 - 17:1 AFRs when in cruise for the best mpgs according to Ty.

It is raining today and supposed to continue for the whole weekend... so testing will be delayed until conditions improve.

My lifters are solid. Surprised me! I assumed roller.

...Explain how you are going down a 1/2 valve! I demand to know the secret to such wizardry!! When Ty sends me a spare intake cam, then I will be able to see how a true 12 valve setup works with our cars

Did you see this question I asked earlier?


If this does not help the "engine-too-big" syndrome, then I am fresh out of ideas man
On my Talon the lifters are hydraulic, so what I did is modify one of the intake lifters on each cylinder that lets it bleed off oil pressure. The intake valves now open much later and close much earlier and lift only about an 1/8 off the seat. This keeps fuel from puddling on the intake valve but still gives me enough swirl for good atomization.


The above pics I just took of my junk head with the first version lifter in stalled. On the new version the intake valve only opens around a 1/8". On my Honda I eliminated one of the intake and rocker on each cylinder lifters all together.

Quote:
Hmmm, I'm trying to think of a way to decrease the amount of air that the engine will get in my usual rpm range. The only way I can think of is retarding the intake camshaft and creating an Atkinson Cycle. Thoughts?
I would think this would work but to be honest I'm not to up on the Atkinson Cycle???
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Last edited by pgfpro; 09-25-2015 at 02:39 PM..
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