Scratched piston/sleeve reapir
#1
Senior Member
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Scratched piston/sleeve reapir
there has been talk about doing piston/sleeve repairs.... I just so happen to repair a fair amount of engines, i basically just stick to working on CRE engines, But I figured I would show how I do some of the repairs....I am not much for describing things, so I will post the pictures and if anyone has any questions feel free to ask.....The engine pictured is a C6 USA...it lost the circlip on the exhaust side and took out the piston and put a healthy scratch on the sleeve... The piston unfortunately is too far gone for repair...But I think the sleeve can be saved.... I will find a used piston in the shop from a Nova/RB of that series and match it to the sleeve, or match the sleeve to the piston..... I can lap the piston smaller, or I can pinc the sleeve smaller..I own the RayA Racing tooling set ........I mainly use a flexi hone in my lathe for cleaning up the sleeve, It does a fantastic job .....
#2
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RE: Scratched piston/sleeve reapir
and here is what I use in my lathe to do it
I also own the Raya Racing pinching tools and my own custom piston lapping die set...
I also own the Raya Racing pinching tools and my own custom piston lapping die set...
#4
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RE: Scratched piston/sleeve reapir
And here is a few more pics of that sleeve after honing.... this time I tried to get better depth in the photo...the results are quite nice
#5
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RE: Scratched piston/sleeve reapir
When I have to repair a piston, or resize a piston I use these here custom made lapping die's ...I have a die for every bore of engine I work with....I use 1200 grit clover lapping paste
#6
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RE: Scratched piston/sleeve reapir
I decided to pass the piston thru the lapping die for a few minutes....just to show how it works with the 1200 grit.... if i wanted I could use much more aggressive abrasive and take it down substantially more..and yes that is a modified piston and rod....rod is lightened and so is the piston.... the circlip was still in the piston, but the dog leg snapped off
#7
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RE: Scratched piston/sleeve reapir
ORIGINAL: llkoolskillet
Are you boreing the sleeve larger and then finding a piston to fit?
Are you boreing the sleeve larger and then finding a piston to fit?
more or less....except i am only honing the sleeve.... and I will find a piston of that style and I can either take the piston down to fit the sleeve, or take the sleeve down to fit the piston... I will likely use a piston from a P5 XLT...tho i will check my engine box and see if there is anything else suitable....
#11
RE: Scratched piston/sleeve reapir
This process is totally do able but by the time you put in all your man hours in , won't it far exceed the cost of a new piston and liner set? I could see this done on an obsolete engine where no parts are available.
#12
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RE: Scratched piston/sleeve reapir
ORIGINAL: controlliner
This process is totally do able but by the time you put in all your man hours in , won't it far exceed the cost of a new piston and liner set? I could see this done on an obsolete engine where no parts are available.
This process is totally do able but by the time you put in all your man hours in , won't it far exceed the cost of a new piston and liner set? I could see this done on an obsolete engine where no parts are available.
not really.....what you see here took me all of 5 minutes to do...the piston/sleeve is worth about $200.00 with the mods.... so the 5 minutes is definitely worth saving a $200.00 piston/sleeve set..............