|
Originally Posted by mike tkach
(Post 3579562)
eliminator28,have you pulled the engine yet,im curious as to what you found.
I'll post up what I find as soon as I get it out :eek: |
Originally Posted by 40gt
(Post 3583050)
Is this the one, June 1999, or is there a newer revision?
Originally Posted by 40gt
(Post 3583051)
I guess I have been lucky, but I think I've broken every recommendation on that bulletin at one time or another!
:eek:
Originally Posted by Griswald
(Post 3583148)
You and numerous others :party-smiley-004:
|
4 Attachment(s)
Got it out yesterday, and here's what I found
Attachment 467627 Attachment 467628 Attachment 467629 Attachment 467630 Took a big gulp of water, dropped #7 exhaust seat which disintegrated and went throughout most of the cylinders via the Intake manifold.... still trying to wrap my head around this one. Gonna pull the lower end apart today.. |
Looks like it blew the headgasket between 5 and 7 also. Could just be the picture though.
|
I once had a very similar issue. I found a hairline crack in the head between the valves.
|
The exhaust seat probably went first then the piston sucked water in around the exhaust valve. It doesn't look like it ran much with water getting in. I'm optimistic that your carnage will be pretty much what you are showing now.
|
So what is next? bore the block, new pistons, fix the head and you are good?
|
Originally Posted by blue thunder
(Post 3615696)
The exhaust seat probably went first then the piston sucked water in around the exhaust valve. It doesn't look like it ran much with water getting in. I'm optimistic that your carnage will be pretty much what you are showing now.
|
4 Attachment(s)
Originally Posted by Philm
(Post 3615677)
Looks like it blew the headgasket between 5 and 7 also. Could just be the picture though.
This motor only had about 30 hours on it.
Originally Posted by JTeam
(Post 3615686)
I once had a very similar issue. I found a hairline crack in the head between the valves.
Originally Posted by blue thunder
(Post 3615696)
The exhaust seat probably went first then the piston sucked water in around the exhaust valve. It doesn't look like it ran much with water getting in. I'm optimistic that your carnage will be pretty much what you are showing now.
I think your right. It appears that I had a detonation problem as well... Seat may have been loose for a while, finally dropped out and jacked everything up. #7 piston is pretty thrashed, and is partially collapsed. The pin boss is partially collapsed because It takes a fair amount of effort to move the rod on the piston. 4 pistons need to be replaced, and I'm not sure if I can buy 4. might have to buy a whole set. I'll call SRP in the morning. #7 cylinder will have to be Sleeved. If I have to buy a whole set of pistons, I'll just bore it to .060 over and put it back together. Heads will need to be milled more (already took .020 off them) to get rid of the debris field... and it might be a lot. and all this IF the head is not cracked, and another seat can be pressed in succesfully. Attachment 467688 Attachment 467689 The pic below shows the burned underside of the #7 piston (left). All the others were clean as is the right hand one. HMMM! Attachment 467690 Attachment 467691 |
Originally Posted by Pismo10
(Post 3615886)
So what is next? bore the block, new pistons, fix the head and you are good?
Originally Posted by mike tkach
(Post 3615923)
+100 seen this happen before,happen,d to a buddy about 3 years ago,about 3 weeks before his annual boat vacation,we pulled engine,had block bored,new piston&rod combo balanced,and assemdled,and engine back in the boat and running about 3 days before he left,oh yea,i forgot to mention,we replaced the heads with edelbrock rpm marine heads.still running strong with no problems.
|
| All times are GMT -5. The time now is 11:16 PM. |
Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.