Tuning OS 91 C-Spec PS

[Shannon Davis]

I know this should go in the "Engines" section but the site is a little small so--I posted here.

Anyway, are any of you finding that the midrange tends to run a little lean. It seems that I have to run the idle relly rich to get the mid to not lean out.

What are you guys finding???? :?:

[benben]

same here. I had to turn my idle needle all the way out.

[WillJames]

Mine do seem to lean out at mid range RPM. You can actually see a huge decrease in smoke when I descend rapidly in idleups. :(

[pepper]

i have found that mine like to run lean, about 120 on temp but i feel like i have the needles in to much but it is showing good temps and performance,,, may be the weather??

pepper

[WillJames]

I run mine over 160 to probably around 190. Is this to hot?


I have Viper Heads.

[pepper]

i don't think so,, correct me if i am wrong but i think you can run up past 200, but i am not sure... and i take back what i said about 120, it's more like 160 to 180... just looked at my papers..

pepper

[Shannon Davis]

These engines are fine at 190f-210f around 235 I start to worry.