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  #1  
Old December 14th, 2019, 16:36
Borgli Borgli is offline
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Holy sii, did that just happen! Buddy's 4.8 stroker

Hey guys,
Me and a buddy were working on his stroker build today, we got the crank and 3 pistons in no problem. Then it all went sideways. One of the oil rings caught on the wall before entering the cylinder and made a gash all the way don't. (that's our theory on what happened anyways)
Is this salvageable or does he need a new block?
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Old December 14th, 2019, 16:37
Borgli Borgli is offline
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Re: Holy sii, did that just happen! Buddy's 4.8 stroker

https://www.flickr.com/photos/186020...posted-public/
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  #3  
Old December 14th, 2019, 16:46
RCP Phx RCP Phx is online now
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Re: Holy sii, did that just happen! Buddy's 4.8 stroker

If it's truly a 4.8 (.080" over) then I would say yes to another block, never seen one though!
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  #4  
Old December 14th, 2019, 17:18
RCP Phx RCP Phx is online now
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Re: Holy sii, did that just happen! Buddy's 4.8 stroker

BTW, do you have a pic of the piston? It can't look good!
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  #5  
Old December 14th, 2019, 17:20
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ehall ehall is offline
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Re: Holy sii, did that just happen! Buddy's 4.8 stroker

damn!
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  #6  
Old December 14th, 2019, 17:22
Borgli Borgli is offline
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Re: Holy sii, did that just happen! Buddy's 4.8 stroker

No marks on the piston. Looks the same as before going in. The ring is only slightly be too. I don't understand how it can have massed it up that bad
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Old December 14th, 2019, 18:02
RCP Phx RCP Phx is online now
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Re: Holy sii, did that just happen! Buddy's 4.8 stroker

Who the hell did the block in the first place? That machining looks horrible.
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Old December 15th, 2019, 02:37
Borgli Borgli is offline
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Re: Holy sii, did that just happen! Buddy's 4.8 stroker

I think that's part image quality, part flash rust. Looked a lot better when we picked it up a year ago.
Went back out to check it with a clearer less pissed off mindset. It's not as bad as we first feared(still really bad). On the left side of it theres a ride that can be felt easily, but the markings on the right are smooth, no noticable difference there compared to the rest of the bore. I'm guessing the crosshatching is gone though.
We'll pull everything off it and take it to a shop.
I'll update when we hear back from them, sometime after Christmas.
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Old December 15th, 2019, 11:16
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old_man old_man is offline
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Re: Holy sii, did that just happen! Buddy's 4.8 stroker

At .080 over, I would have the cylinders sonic tested for thickness.
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  #10  
Old December 15th, 2019, 16:50
Borgli Borgli is offline
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Re: Holy sii, did that just happen! Buddy's 4.8 stroker

It's bored 100 over at 3.975in. It's a meaty renix block, plenty left on the walls. We got it stripped back down today.
Anyone know if sealed power sells oil control rings? Kind of a waste to buy a new 60$ set.
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Old December 15th, 2019, 17:30
RCP Phx RCP Phx is online now
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Re: Holy sii, did that just happen! Buddy's 4.8 stroker

Quote:
Originally Posted by Borgli View Post
It's bored 100 over at 3.975in. It's a meaty renix block, plenty left on the walls. We got it stripped back down today.
Anyone know if sealed power sells oil control rings? Kind of a waste to buy a new 60$ set.
It's kind of a waste to assemble this motor!
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  #12  
Old December 15th, 2019, 17:54
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Anak Anak is offline
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Re: Holy sii, did that just happen! Buddy's 4.8 stroker

I have purchased a single piston's worth of rings before. That is probably what you are looking at doing.

FWIW, that was what made me swear off band type ring compressors.

A good machine shop should be able to determine if you have a real problem or if a couple passes with a finish hone will get you back in business.
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  #13  
Old December 15th, 2019, 20:57
Borgli Borgli is offline
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Re: Holy sii, did that just happen! Buddy's 4.8 stroker

Quote:
Originally Posted by RCP Phx View Post
It's kind of a waste to assemble this motor!
?
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  #14  
Old December 16th, 2019, 05:46
RCP Phx RCP Phx is online now
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Re: Holy sii, did that just happen! Buddy's 4.8 stroker

It just doesn't sound like a healthy build. Is this the motor with the Hesco head?
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  #15  
Old December 16th, 2019, 06:12
Evan03 Evan03 is offline
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Re: Holy sii, did that just happen! Buddy's 4.8 stroker

I'd probly run a hone through it real quick along with a new set if rings.
It most likely will be fine.

It's just jeep motor a good one to learn on. Dont frett the small stuff. Bolt it together and hit the trails.
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