Exhaust Manifold Crud
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Engine Repair
Forum Discription: Engine problems and solutions
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=34851
Printed Date: April-29-2024 at 2:44am
Topic: Exhaust Manifold Crud
Posted By: MI-nick
Subject: Exhaust Manifold Crud
Date Posted: October-31-2014 at 2:54pm
This is what came out of the manifolds when I drained this year...actually this is what I usually get. '99 SAN with GT-40 ~900hrs...~100hrs this summer. normal?? concern?? It looks like rust flakes...but not quite... ------------- As far as I can tell, I'm not quite sure... |
Replies:
Posted By: Hollywood
Date Posted: October-31-2014 at 3:10pm
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You will get rust when draining a cast iron manifold. Do you get this much crud on an annual basis? The first time I drained there was a lot, but not as much year after year now. ------------- |
Posted By: MI-nick
Date Posted: October-31-2014 at 4:04pm
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that seems to be pretty much "normal" for this boat...my '88 has some too...but maybe ~1/8 the amount... ------------- As far as I can tell, I'm not quite sure... |
Posted By: Gary S
Date Posted: October-31-2014 at 11:04pm
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More than I ever get out of PCM ones,the aluminium HM's get nothing out. Maybe your water is on the acidic side? ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1711&sort=&pagenum=1&yrstart=1966&yrend=1970" rel="nofollow - 69 Mustang HM SS 95 Nautique Super Sport |
Posted By: malibud
Date Posted: November-07-2014 at 10:01am
| I think that is normal. wow and a hundred hours in one season up there. I am lucky to see 40 in NC |
Posted By: phatsat67
Date Posted: November-07-2014 at 10:46am
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I do between 70-110 hours a season and never get anything out of my PCM manifolds. They are stored dry every winter. ------------- |
Posted By: Hollywood
Date Posted: November-07-2014 at 2:33pm
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I guess there's a chance you sucked up some muck/crud at one time that settled in the manifolds. Do you drain them every year? ------------- |