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-   -   Aluminum cyl head question???? (https://www.offshoreonly.com/forums/general-q/286356-aluminum-cyl-head-question.html)

prostockcat 10-13-2012 06:40 PM

I think It may just be reversion them. Gonna have them re checked and see what happens. Just wondering if the new guide did not seal properly where salt is all stucvk around where they press through

MILD THUNDER 10-13-2012 06:41 PM


Originally Posted by mike tkach (Post 3795355)
my guess is timing set to low and egt,s are sky high,i have seen this happen even with inconel valves.

+1.

prostockcat 10-14-2012 06:34 AM

It alwas was about 12.5 -1 fuel ratio not any leaner, timing was at 34 degrees

FIXX 10-14-2012 11:48 AM

or if the timing was off the valve seats in a aluminum head can move..or you got bad gas that screwed them up..

prostockcat 10-14-2012 05:39 PM

Valves are not tuliped

prostockcat 10-15-2012 09:25 AM

machine shop that did the guide work said that the exhaust guides do not go through a water port and no tuliped valves so i thinking reversion is the issue. can anyone confirm thi,s that the guide does not go through a water port?

rtc74 12-15-2012 09:44 PM

You need to talk to Foxwell Motorsports. He actually help develop the canfield head which is supposed to be really awesome. He can definitely help you with the head design question.
As far as the cam, you are probably experiencing reversion. Your cam LSA (lobe separation angle) should 112 to 116. Pending on setup.

protechcoat 12-15-2012 10:44 PM

were the exh seats pounded out ,if so the seats could be to soft

ezstriper 12-16-2012 08:33 AM

I'd be looking at the cam...


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