|
Re: burnt pistons!
Originally Posted by Hitchhikkr
Valve temp has little to do with the piston's ability to transfer heat from itself. Every engine Ive torn apart that melted a piston, started on the intake side.
hence, why i noted that the information was read. i have yet to tear down a motor that's had a melted piston. i plan to keep it that way while tuning my z6 turbo setup |
Re: burnt pistons!
Originally Posted by onlyflash944
hence, why i noted that the information was read. i have yet to tear down a motor that's had a melted piston. i plan to keep it that way while tuning my z6 turbo setup |
Re: burnt pistons!
CP Pistons, I mean Honda motors with forged pistons that have melted, usually start on the intake side because there's the least amount of material there around the intake reliefs. That area then heats up quicker (less material to x-fer heat), which fucks the ring area right there first, which lets oil past it. Then that leaked oil self-ignites, which puts the engine into a death spiral as it starts to reach the melting point. FYI the rich mixture cools the intake charge and the surface of the internal parts (preventing detonation). 1500F gasses will heat much farther than just the surface, which cause heat failure in parts.
BTW I don't know about Toyota engines, but .004" is more than enough for most engines near 100hp/L. The generic Wiseco answer to a Honda @20psi is a .0035" clearance. Usually .004" is for weekend cars, larger is for race-only. |
Re: burnt pistons!
Originally Posted by HiProfile
BTW I don't know about Toyota engines, but .004" is more than enough for most engines near 100hp/L. The generic Wiseco answer to a Honda @20psi is a .0035" clearance. Usually .004" is for weekend cars, larger is for race-only.
|
Re: burnt pistons!
really .004 is to tight? its a daily driver. still cant get my pc to load my pics.
|
Re: burnt pistons!
5 Attachment(s)
taken with a crappy camera phone!
|
Re: burnt pistons!
|
Re: burnt pistons!
What kinda of piston clearance would be good for this application? I'm building a 4agte and was just thinking about it.
|
Re: burnt pistons!
ran a .004 on the clearance.
|
Re: burnt pistons!
that's what I was planning on. But if yours turned out like that... I don't know.
|
| All times are GMT -5. The time now is 11:59 PM. |
© 2024 MH Sub I, LLC dba Internet Brands