10-16-2018, 12:36 PM
(10-16-2018, 11:04 AM).Jake Wrote: What do you think the cause of "almost overheating" is? I'd be a little concerned given autocross isn't exactly a long period of super-hard-charging.
It was 100% the result of the 1300cfm electric fan I had. That's just not nearly enough airflow for a V8 like this but it's all that will fit. The shroud was keeping it from cooling at speed too so it wasn't just issues at idle. It just slowly kept climbing up so it wasn't too far from working. Took both off and it has zero issues staying right at 180. I'll need to move to a 26" radiator and run dual 12s if I want to move back to electric fans which I will at some point. Gotta figure out if I'm pulling my heads first though, hopefully I'll be taking the valvecovers off tonight and getting some answers to my crankcase pressure issue.
All signs point to burnt up valve guides causing me to bend pushrods. I broke my engine in with my rockershafts oriented wrong so this isn't entirely surprising.