| Author |
Message |
Alex Alrikas (Nastyal)
Registered Member
Username: Nastyal
Post Number: 6
Registered: 12-2006
Posted From: 71.28.18.112
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, February 13, 2007 - 11:40 am: | |
I posted a few months ago about a left bank smoking for 10 min. upon start up. I finaly built up enough courage to pull the left head yesterday.
One of the cylinders is very rusty.Head gasket I imagine? I'll pull the pan today and piston to ck for any problems with the piston or rings. I'll hone out the cylinder to see if it will clean up the rust. What should I be looking for? If it cleans up? Can I just reinstall the piston and a new gasket set? Or is there anything else I should do? Alex |
Bob greenwood (Bob_greenwood)
Registered Member
Username: Bob_greenwood
Post Number: 679
Registered: 7-2006
Posted From: 64.136.49.228
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, February 13, 2007 - 12:25 pm: | |
have that head checked...bet it's bad |
Hans (Buellhans)
Registered Member
Username: Buellhans
Post Number: 25
Registered: 2-2007
Posted From: 199.60.181.9
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, February 13, 2007 - 4:03 pm: | |
Oh yes sounds like head to me too Hone the cylinder re ring it Save some agravation and put a kit in it . |
john w. roan (Chessie4905)
Registered Member
Username: Chessie4905
Post Number: 411
Registered: 10-2003
Posted From: 71.58.126.56
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, February 13, 2007 - 8:34 pm: | |
I wouldn;t try to hone that liner... Of course, check head, and buy a single liner and a set of rings for one cylinder. Rust will most likely have left pits in liner. |
Alex Alrikas (Nastyal)
Registered Member
Username: Nastyal
Post Number: 7
Registered: 12-2006
Posted From: 75.89.18.227
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, February 14, 2007 - 1:25 am: | |
I pulled the pan, pulled the rod cap on the rusty cylinder and pushed out the piston and the liner pushed out with it.I honed it and it cleaned up really nice, it was all on the surface, no pits. Visually, I can't see anything wrong. Piston and rings look good.The head also looks good. Can Any diesel shop check out the head or is that a specialty shop process? Does the head have to be completly disasembled? One other thing that was quite unusual was a small pile right in the middle of the pan what looked like bits of a brown bakalite, Is this some kind of carbon bits? |
Bob greenwood (Bob_greenwood)
Registered Member
Username: Bob_greenwood
Post Number: 685
Registered: 7-2006
Posted From: 64.136.49.228
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, February 14, 2007 - 6:55 am: | |
machine shop |
Alex Alrikas (Nastyal)
Registered Member
Username: Nastyal
Post Number: 8
Registered: 12-2006
Posted From: 151.213.162.231
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, February 14, 2007 - 12:07 pm: | |
Thanks for the response. I'll be checking prices for a liner kit and also for a local machine shop.
Meanwile I'll be repainting the pan and I may pull the next cyl to check that also because of what looks like a small build up inside the exhaust manifold.???? |
Bob greenwood (Bob_greenwood)
Registered Member
Username: Bob_greenwood
Post Number: 689
Registered: 7-2006
Posted From: 64.136.49.228
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, February 14, 2007 - 12:22 pm: | |
the 8v71 has a weak spot when it comes to it's heads..especially if it gets too hot |
Alex Alrikas (Nastyal)
Registered Member
Username: Nastyal
Post Number: 9
Registered: 12-2006
Posted From: 151.213.162.231
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, February 14, 2007 - 5:33 pm: | |
So Far, I think we may have narrowed down the problem. The top ring upon closer ispection has one end broke. There is about a 1" end gap versus less then a half. If I can find a #2 liner kit Part # 23505305 I'll go that way.(About$270.00)I'm still not sure on 2 items? Why all the I'll call them carbon bits laying in a pile in the middle of the pan? It looks like broken bakalite.
The other is it normal for the liner to slide out so easy?? Am I lucky? Also I was told that the weak spot on the heads is between the valves and to steel brush and do a visual. If it looks okay it probably is. Alex |
john w. roan (Chessie4905)
Registered Member
Username: Chessie4905
Post Number: 414
Registered: 10-2003
Posted From: 71.58.126.56
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, February 14, 2007 - 5:37 pm: | |
You need to check liner to block height distance to be sure that it isn't sticking up too high or too low per rebuild specs, as it will make head to block seal short lived if not correct. Take head to a shop familiar with detroits, as it should be pressure checked, and magnafluxed. Could have a poor sealing injector tube |
Alex Alrikas (Nastyal)
Registered Member
Username: Nastyal
Post Number: 10
Registered: 12-2006
Posted From: 151.213.162.231
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, February 14, 2007 - 9:45 pm: | |
Thanks everyone for your response. I'll try to find a shop to ck the head. And I'll get a liner kit orderd and all the gaskets. Iv'e ordered an engine service manual so I'll have all the specs I need. Hopefully the parts won't take too long.
Thanks Again! I'll keep you informed as I get farther a long. I'll be out of town for a about four or five days. Alex |
Tom Caffrey (Pvcces)
Registered Member
Username: Pvcces
Post Number: 1043
Registered: 5-2001
Posted From: 65.74.69.234
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, February 14, 2007 - 10:00 pm: | |
Alex, you're going to want to get that liner to be a very snug fit in the block. It depends on contact with the block to get rid of it's heat.
For what it's worth.
Tom Caffrey PD4106-2576
Suncatcher
Ketchikan, Alaska |
Hans (Buellhans)
Registered Member
Username: Buellhans
Post Number: 26
Registered: 2-2007
Posted From: 205.250.41.167
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, February 15, 2007 - 2:21 pm: | |
the liners should push in with a little effort .two thumbs and a little grunt if its lose as you say it is maybe go to the next size up . standard number tree or five thousands over . Hey I just used 11 new liners as drain tile for my retaining wall . You said nothing of the figure eight seals were they in tact? |
john w. roan (Chessie4905)
Registered Member
Username: Chessie4905
Post Number: 417
Registered: 10-2003
Posted From: 71.58.126.56
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, February 15, 2007 - 4:45 pm: | |
Remove any varnish build up in block area that liner sides ride against. Also look for hotspots on removed liner and check if it is std. or oversize OD. as these engines get older, you are going to see other than std dimensions on liners and blocks. Don't try to go cheap on having head checked or cut corners on liner/piston/ring repairs. These engines run a long time if given proper attention.Are you confident that the other side of engine is ok. A lot of new owners don't know what is a good running engine and one that has some significant issues. Just a thought since you already have one head off anyway. |