Go Back   Offshoreonly.com > Owner's Forum > Scarab


OSO Sponsor
NorTech
OSO Sponsor

Advertiser

Advertiser


Reply
 
 
 
 
Thread Tools
Old 07-18-2009, 11:31 PM   #1
Registered
 
Join Date: Jul 2009
Location: Lake Oconee, Georgia
Posts: 8
28' Scarab Excel
Reversion ? Head Gasket? Bad manifold ?

Ok fellow gear heads.

I'm about to install CMI Headers on my 454. When I noticed some rust starting in the #5 exhaust port of the cast log style manifold I was removing.

Not sure how to deal with this ? I guess I can do a compression check on that cylinder to make sure there isn't a weak spot in the head gasket or chaulk it up as reversion ?

Or ?

Any clues or specifics on what it could actually be ?

Appreciate any facts.

Cheers !
Highdollarcarguy is offline   Reply With Quote
Old 07-21-2009, 12:30 PM   #2
Registered
 
Join Date: Sep 2006
Location: Maryland / Utah
Posts: 278
31' Scarab Thunder HP500's
A compression check would be a complete waste of time. Do a Leak Down on that cylinder. Could be an intake manifold gasket as well but probably not.
Run_em_hard is offline   Reply With Quote
Sponsored Links
Old 08-15-2009, 07:24 PM   #3
Registered User
Gold Member
 
Join Date: Mar 2005
Posts: 100
Quote:
Originally Posted by Highdollarcarguy View Post
Ok fellow gear heads.

I'm about to install CMI Headers on my 454. When I noticed some rust starting in the #5 exhaust port of the cast log style manifold I was removing.

Not sure how to deal with this ? I guess I can do a compression check on that cylinder to make sure there isn't a weak spot in the head gasket or chaulk it up as reversion ?

Or ?

Any clues or specifics on what it could actually be ?

Appreciate any facts.

Cheers !
I would have to believe that the manifold you took off is the reason for the rust. If I read it correclty it sounds like the rust was inside of the port on the manifold. If thats the case i would not worry about it since you are puting new manifolds on. alot of time's the gasket for the rise leaks and causes this. The riser is the elbow that bolts to the manifold. As long as you have the manifolds off you may as well do take the heads off and have them done.
scarabman34 is offline   Reply With Quote
 
 
 
 
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off



All times are GMT -5. The time now is 04:49 PM.


Copyright 2011 OffShoreOnly. All rights reserved.

Search Engine Optimization by vBSEO 3.2.0