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LSA pistons for a 4.080 over-bore

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Old Sep 3, 2017 | 02:49 PM
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Default LSA pistons for a 4.080 over-bore

I just sourced a LSA engine, but unfortunately upon tear down I found the pistons are all f*cked up so badly due to detonation and the one of the bores is scored so it needs a 4.080 over-bore to clean up. I have some questions if some please shed some light on them :

1- Whats the dish size of the factory pistons? I could not find any info about that.
2- Can I get away from balancing the whole assembly by installing pistons of the same weight as the old ones? balancing charge is very expensive where I live.
3- Who sells a good set of factory specs oversized pistons?
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Old Sep 3, 2017 | 03:24 PM
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Hook up with a sponsor here who can help you: tech@WS6store
If they don't know, you don't need to... lol
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Old Sep 4, 2017 | 06:49 AM
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If you have to bore it, they can't be the same weight due to more mass. The difference might be small, but it will still be different.
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Old Sep 4, 2017 | 09:24 AM
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Default Forged Piston WEIGHT

Hi Camaro, I would like more information, the other Max Bore Sizes ?

My method, "thin wall sleeve" the bad cylinder.
Install RaceTech 4.06? Forged pistons, a lower weight piston with new Steel Rings.

THUS NO Re-balance needed.

I can supply the piston & rings ?

Lance
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Old Sep 4, 2017 | 10:26 AM
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Originally Posted by Pantera EFI
Hi Camaro, I would like more information, the other Max Bore Sizes ?

My method, "thin wall sleeve" the bad cylinder.
Install RaceTech 4.06? Forged pistons, a lower weight piston with new Steel Rings.

THUS NO Re-balance needed.

I can supply the piston & rings ?

Lance
PM sent.
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Old Sep 4, 2017 | 01:15 PM
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Default Forged Piston WEIGHT

Hi, thanks for the PM (read).

PLEASE take the time to provide the weight of the piston, pin (.945" ?), rings. (one assembly)

The NEW Forged Piston, Pin, Rings can be equal to OR a little less in weight.

This case will SAVE $$$.

The bore, 103.5=4.075" a more common ring size.

Lance
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