SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: tryklon on January 20, 2011, 08:42:29 AM

Title: Take a look at this pic???
Post by: tryklon on January 20, 2011, 08:42:29 AM
Hey guys going threw the 455 for the first time can anyone explain this hole?? looks like its been cut?  :screwy:
Pulled engine due to large amounts of water in the oil  :banghead:could this possibly be it?

any educated guess would be awsome thanks!
Title: Re: Take a look at this pic???
Post by: tryklon on January 20, 2011, 08:44:06 AM
Additional pics[attachimg=1][attachimg=2]
Title: Re: Take a look at this pic???
Post by: 98xc800 on January 20, 2011, 09:42:34 AM
Oil drain to sump for oil accumulating in lifter gallery.
Title: Re: Take a look at this pic???
Post by: Howard19 on January 20, 2011, 01:06:21 PM
That is a drain back from valley to t/chain area I would cut more of the lip off the bottom of the hole

mostly the cause on the OLDS for milk shake is a poorly seeled intake and to much pressure in coolling system  Good luck with the build  :thumbup:

I do have a set of KA marine heads and a 30 over short block with forged pistons also a marine block  ;D
Title: Re: Take a look at this pic???
Post by: tryklon on January 20, 2011, 02:33:59 PM
thanks guys for the info, might consider the short block, checking the damage under the heads  :banghead: