U20 engine technical input requested

Tech tips and how to's

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notoptoy
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Re: U20 engine technical input requested

Post by notoptoy »

Waiting for the video and audio!!!
"When all else fails, force prevails!" Ummm, we're gonna need a bigger hammer here.

67.5 SPL311 H20 w/5 speed
65 Impala Convertible
2017 C43 AMG
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jrusso07
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Re: U20 engine technical input requested

Post by jrusso07 »

Sweet!
Joe

1969 SRL311 - Solex
1970 SPL311 - U20 mod
1970 SRL311
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Gregs672000
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Re: U20 engine technical input requested

Post by Gregs672000 »

:smt006
Last edited by Gregs672000 on Mon Apr 26, 2021 10:01 pm, edited 1 time in total.
Greg Burrows
'67 2000 #588
Tacoma, WA
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Gregs672000
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Re: U20 engine technical input requested

Post by Gregs672000 »

Gregs672000 wrote: Mon Apr 26, 2021 9:46 pm The Bitch is Back! Cue the Elton John song...
Started it for a second time and let it warm up to temp, checking balance etc and installing the stacks and filters. I waited until it came up to temp so that auto tune could do its thing (won't activate below operating temp), and as soon as it did I watched the ratio fatten up and the idle smoothed out... so cool. Drove it nicely at first letting it adjust the ratios some, then progressively got on it harder and it was just very happy. It's still learning, but I wasn't out to do a tune. The idle is the best the engine has ever had, maybe because the valves are all clean and the intake is well sealed and evenly fed. I snapped a couple quick pics as I don't normally get pics without the hood on. Later I will do a compression test to see how much it dropped (was 220+) with the thicker head gasket.
God I love this stupid car...
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Greg Burrows
'67 2000 #588
Tacoma, WA