Planet Minis

Bigjako · 04-21-2009, 03:03 PM

I had a motor built for my Z project. I have not got the motor yet, but the guy said when he test fired the motor it was smoking. He said it was probably because the rings were not seated yet. He already has 100 dollars of my money, should I believe his story and pay the rest. I have rebuilt a few motors my self and never had a smoking issue. Guess I should have done this one also.

I guess my question is should I believe the ring story or not.

Ands1 · 04-21-2009, 04:08 PM

Quote:

Originally Posted by Bigjako

I had a motor built for my Z project. I have not got the motor yet, but the guy said when he test fired the motor it was smoking. He said it was probably because the rings were not seated yet. He already has 100 dollars of my money, should I believe his story and pay the rest. I have rebuilt a few motors my self and never had a smoking issue. Guess I should have done this one also.

I guess my question is should I believe the ring story or not.

I've never had a rebuild smoke, could be the rings / oil in the bore etc etc, could be valve guides, valve seals etc etc you need to ask him more questions, like what sort of a rebuild..
Good luck Andy

sketchycheck · 04-21-2009, 04:23 PM

depends on how long it smokes, maybe a little at first but then it should go away, if it dosnt then your rings were put in wrong

gstegman · 04-21-2009, 04:46 PM

Quote:

Originally Posted by sketchycheck

maybe a little at first but then it should go away, if it dosnt then your rings were put in wrong

Not if there are issues with the valve seals like Ands1 mentioned. I bet a beer thats the issue if it has new rings and a proper bore/piston combo.

sketchycheck · 04-21-2009, 04:52 PM

ya true, but thats more of a rare thing to have a problem with valve seals. what was he doing to the motor?? bbk?

Bigjako · 04-21-2009, 05:13 PM

Z50 bottomend, totally gone through. CT70 topend. Bored cylinder,new piston,rings, etc. Head totally gone through. The rebuilder is no amatuer. He has done several of these motors. I know anyone can make mistakes.

Bigjako · 04-21-2009, 06:07 PM

Probably valve guide issue then? I need make a decision tonight anymore input would be apprectiated.

dirtbkr188 · 04-21-2009, 06:23 PM

It's also very easy to overlap the ends of the corrugated oil ring when installing the rest of the rings. If that happens, it lets oil seep up into the cylinder and be burned off. Not much else to do but remove the top end and realign the oil ring properly.

Bigjako · 04-21-2009, 08:04 PM

Nevermind. Talked to engine rebuilder. He has fixed the problem. Do not know how. Don't really care. Great guy to deal with. He did say he has done several engines for other PMers. Motor headed my way.

ARDVARK · 04-21-2009, 08:49 PM

No share? I read this as I read all posts. To learn from your experience. If you won't share then why should we?

Bigjako · 04-21-2009, 08:58 PM

All I got for him was he tore topend off of the motor. Found oil in the cylinder. Rings had not seated. Used same head. Different cylinder and piston. Fired the motor. No smoke purred like a kitten. Stand up guy. I have not received motor yet. Very confident it will be excellent. That is all of the info I have.

Ands1 · 04-22-2009, 12:15 AM

Happy days

ARDVARK · 04-22-2009, 05:31 AM

Thanks.

04-21-2009, 03:03 PM	#1 (permalink)
Bigjako PM Newbie Join Date: Nov 2004 Posts: 56	Smoking after rebuild I had a motor built for my Z project. I have not got the motor yet, but the guy said when he test fired the motor it was smoking. He said it was probably because the rings were not seated yet. He already has 100 dollars of my money, should I believe his story and pay the rest. I have rebuilt a few motors my self and never had a smoking issue. Guess I should have done this one also. I guess my question is should I believe the ring story or not.

04-21-2009, 04:23 PM	#3 (permalink)
sketchycheck 3rd Gear Member Join Date: Jun 2008 Location: middleboro,massachusetts Posts: 1,303 My Mood:	Re: Smoking after rebuild depends on how long it smokes, maybe a little at first but then it should go away, if it dosnt then your rings were put in wrong

04-21-2009, 04:52 PM	#5 (permalink)
sketchycheck 3rd Gear Member Join Date: Jun 2008 Location: middleboro,massachusetts Posts: 1,303 My Mood:	Re: Smoking after rebuild ya true, but thats more of a rare thing to have a problem with valve seals. what was he doing to the motor?? bbk?

04-21-2009, 05:13 PM	#6 (permalink)
Bigjako PM Newbie Join Date: Nov 2004 Posts: 56	Re: Smoking after rebuild Z50 bottomend, totally gone through. CT70 topend. Bored cylinder,new piston,rings, etc. Head totally gone through. The rebuilder is no amatuer. He has done several of these motors. I know anyone can make mistakes.

04-21-2009, 06:07 PM	#7 (permalink)
Bigjako PM Newbie Join Date: Nov 2004 Posts: 56	Re: Smoking after rebuild Probably valve guide issue then? I need make a decision tonight anymore input would be apprectiated.

04-21-2009, 06:23 PM	#8 (permalink)
dirtbkr188 3rd Gear Member Join Date: May 2004 Location: New Jersey Posts: 2,972	Re: Smoking after rebuild It's also very easy to overlap the ends of the corrugated oil ring when installing the rest of the rings. If that happens, it lets oil seep up into the cylinder and be burned off. Not much else to do but remove the top end and realign the oil ring properly.

04-21-2009, 08:04 PM	#9 (permalink)
Bigjako PM Newbie Join Date: Nov 2004 Posts: 56	Re: Smoking after rebuild Nevermind. Talked to engine rebuilder. He has fixed the problem. Do not know how. Don't really care. Great guy to deal with. He did say he has done several engines for other PMers. Motor headed my way.

04-21-2009, 08:49 PM	#10 (permalink)
ARDVARK PM Newbie Join Date: Dec 2006 Location: Powhatan, Virginia Posts: 52	Re: Smoking after rebuild No share? I read this as I read all posts. To learn from your experience. If you won't share then why should we?

04-21-2009, 08:58 PM	#11 (permalink)
Bigjako PM Newbie Join Date: Nov 2004 Posts: 56	Re: Smoking after rebuild All I got for him was he tore topend off of the motor. Found oil in the cylinder. Rings had not seated. Used same head. Different cylinder and piston. Fired the motor. No smoke purred like a kitten. Stand up guy. I have not received motor yet. Very confident it will be excellent. That is all of the info I have.

04-22-2009, 12:15 AM	#12 (permalink)
Ands1 PM Newbie Join Date: Nov 2008 Location: Manchester England Posts: 40	Re: Smoking after rebuild Happy days

04-22-2009, 05:31 AM	#13 (permalink)
ARDVARK PM Newbie Join Date: Dec 2006 Location: Powhatan, Virginia Posts: 52	Re: Smoking after rebuild Thanks.

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