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Cylinder Hone and ring seating
- kawi810
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22 Dec 2014 02:48 - 22 Dec 2014 04:39 #656696
by kawi810
original owner of a 1984 gpz 750
1985 turbo 750 stock, being restored.
1984 gpz 750 with 810 cc wiesco's megacycle cams(471-10) 34 mm flatslides v&h pipe ported head dyna ignition. bottom end, crank case from turbo 750 and sprockets.
Replied by kawi810 on topic Cylinder Hone and ring seating
wow i did not know that, i always thought engine oil's primary function was to minimize metal-to-metal contact reducing- friction and wear.if you reduce friction you reduce heat.
original owner of a 1984 gpz 750
1985 turbo 750 stock, being restored.
1984 gpz 750 with 810 cc wiesco's megacycle cams(471-10) 34 mm flatslides v&h pipe ported head dyna ignition. bottom end, crank case from turbo 750 and sprockets.
Last edit: 22 Dec 2014 04:39 by kawi810.
The following user(s) said Thank You: PLUMMEN
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- SWest
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- 10 22 2014
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22 Dec 2014 06:50 #656705
by SWest
Replied by SWest on topic Cylinder Hone and ring seating
Exactly. Heat is the enemy. Cause and effect. You get a cookie too.
Steve
Steve
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- homert1
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23 Dec 2014 05:10 #656770
by homert1
Replied by homert1 on topic Cylinder Hone and ring seating
Currently building an engine (1045cc) and a question in regard to honing cyls........is there a preferable side for the hone to enter the cylinder?? Top ( head side ) or bottom ( crankcase side )?? I know the bottom side has a taper for cyinder rings to enter the cylinder during reassembly and was told to remove the hone while still turning. I would think this would damage the top of the cylinder?? Any thoughts??
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- SWest
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23 Dec 2014 06:24 #656774
by SWest
Replied by SWest on topic Cylinder Hone and ring seating
That would depend on the type of hone, the condition of the cylinders etc. With a ball hone it can be done. With the block style, the hone can be broken as it comes out. I'd say from the bottom. The most important part is a 45 degree cross hatch. Is it a new bore? If not is there a ridge at the top? Check the bores by using a feeler gauge at top, middle and bottom to make sure there is no taper and they are even.
Steve
Steve
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- homert1
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23 Dec 2014 07:16 #656778
by homert1
Replied by homert1 on topic Cylinder Hone and ring seating
I am using a block style hone.........deglazing cyls only. No ring ridge at top of cylinder and cyls measures within specs.
I understand the cross hatch is most important for cylinder and new rings to breakin properly.
I understand the cross hatch is most important for cylinder and new rings to breakin properly.
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- SWest
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23 Dec 2014 07:26 #656780
by SWest
Replied by SWest on topic Cylinder Hone and ring seating
A de glazing hone can be used but a course one just a few passes will seat the rings RIGHT NOW. I take it it is not a new bore. What makes you thing they are glazed?
Steve
Steve
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23 Dec 2014 08:26 #656790
by homert1
Replied by homert1 on topic Cylinder Hone and ring seating
No not a new bore.....engine has been in service and cyl walls are very shiny. I am installing new rings and want a complete seal
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- Nessism
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23 Dec 2014 08:34 #656792
by Nessism
Replied by Nessism on topic Cylinder Hone and ring seating
This website has instructions on how to properly use a hone.
www.enginehones.com/
A ball hone is the proper tool to deglaze used cylinders. A straight hone can skip over low spots.
With used cylinders a 240 grit hone is about right. You can go up to 320 with chrome rings, but 240 works well in my experience. The engine hone website provides guidelines on this as well.
A ball hone is the proper tool to deglaze used cylinders. A straight hone can skip over low spots.
With used cylinders a 240 grit hone is about right. You can go up to 320 with chrome rings, but 240 works well in my experience. The engine hone website provides guidelines on this as well.
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- SWest
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23 Dec 2014 08:57 #656793
by SWest
Replied by SWest on topic Cylinder Hone and ring seating
I used a deglazing hone on my last build but because of a oil issue I had to tear it down again, the cylinders were at the end of spec. The fine scratches were still there and the rings didn't seat. I bought a KZ 1000 barrel set with rings and pistons. Not having a replacement piston, (one was scored) I installed the stock ones for the time being, the cylinders were like new. When I pulled the head for a valve overhaul, the scratches were still there again. Soon I will be putting in my new 10.25/1 Wiseco pistons and rings with a course hone. I don't want to have to do this over and over.
Not every one can buy it all at the same time. I could have but my daughter and grandchildren needed a car desperately so I made do. I didn't get a cheap one for $15-2500, no I was selfish and got them a 04 Malibu for $5000. I didn't want to have to work on my bike and a cheap car so now I can focus on the bike.
Steve
Not every one can buy it all at the same time. I could have but my daughter and grandchildren needed a car desperately so I made do. I didn't get a cheap one for $15-2500, no I was selfish and got them a 04 Malibu for $5000. I didn't want to have to work on my bike and a cheap car so now I can focus on the bike.
Steve
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