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Username Post: oil inside intake?        (Topic#347870)
rod 
Senior Member
Posts: 1624
rod
Loc: kingman,az
Reg: 04-29-00
10-24-17 08:17 PM - Post#2712044    

my friend has a 355 which keeps sucking oil into the intake manifold. Brian has changed gaskets several times. last week-end he checked the angle on the intake surface of the heads. he said he found it to be 35 degrees [which I think is correct]. the head gasket surface has been milled but it is unknown how much.
some questions: how much can a head be flat milled before the intake surface [either head or manifold] has to be milled? what brand of glue [gasket cement] works best on intake ports. FYI, without ordering something off the internet, the only thing available here is Permatex [or something made by them and sold as a house brand, IE Napa] I have heard water pump silicon works well, but never tried it. the new blue Permatex is absolute JUNK!!!
any other thoughts?
thanks Rod in AZ



 




Don57 
"12th Year" Silver Supporting Member
Posts: 1370
Don57
Age: 67
Loc: Illinois
Reg: 04-28-00
10-25-17 05:10 AM - Post#2712072    
    In response to rod

Could it be sucking oil through the pcv valve? Maybe a missing baffle?

Some people have problems with silicone sealer because they don't allow adequate time for it to dry.

Don
1957 3200 Stepside


 
grumpyvette 
Senior Chevytalk Moderator -- Performance Subject Matter Expert --
Posts: 17178
grumpyvette
Age: 70
Loc: FLORIDA USA
Reg: 03-16-01
10-25-17 09:11 AM - Post#2712105    
    In response to Don57

http://garage.grumpysperformance.com/index.php?thr...

http://garage.grumpysperformance.com/index.php?thr...

http://garage.grumpysperformance.com/index.php?thr...

IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!


Edited by grumpyvette on 10-25-17 09:17 AM. Reason for edit: No reason given.

 
elcamino 
Dedicated Member
Posts: 5341
elcamino
Loc: Lake Superior-Michigan US...
Reg: 03-30-00
10-25-17 07:02 PM - Post#2712183    
    In response to rod

If it's been milled then maybe the intake don't fit anymore. In other words there is a gap between the intake and the heads that's too big for a gasket to seal. He should test fit the intake without any gaskets and check the fit matches. Sounds like the heads may have been cut to much?

There was a episode of Fantom Works (Velocity show) back in 2016 where they had a older (60's) chevy engine like that, burning oil for no good reason. Was the intake that did not fit and it was a original chevy intake. Its was like it shrunk and the gap between the intake and the head was too great to effectively seal.

Mike
2017 GMC Sierra Denali Ultimate 6.2L(420hp)/8-sp Z95
2016 Polaris RZR 900 EPS


 
62chevy427 
"12th Year" Silver Supporting Member
Posts: 2123
62chevy427
Loc: laurens sc
Reg: 04-13-06
10-25-17 07:22 PM - Post#2712189    
    In response to rod

I have had to mill the bottom of the intake to get the gaskets to work
bought a edelbrock aluminum intake one time where the angles on the intake ports were off. milled the intake to correct.

56 bel air ((since 2002)
62 impala ss (since 1965)
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66 nova (since 1987)
67 malibu convertible (since 1981)
72 el camino ss454 (since 1985)
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14 camaro (new)


 




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