Old pistonrings on wiseco pistons?

[TFD]

Hi people,
first question right after the introduction 2 minutes ago haha

The GM power/upgrademanual says they use the old piston rings on the new wiseco pistons so they dont have to hone/bore the cilinder (put overbore pistons in it etc. etc.).
Now I did this stuf before on the Nissan projects with overbore JE pistons but using oem rings and no need to take the whole engine apart for a bore sounds nice to me.

Anyone know the background of this thing or any word of advice?

Any pro/cons on wiseco's btw or how to install them correct? Heared people about burning oil, but that could be a bad mechanic's job as well...

Grtz,
Daniel

 

[evocarlos]

you have to use the rings from the cylinder your changing on and put them back in that cylinder with the new piston

personally i would just fit the new rings and run a honing tool down the bores then run the engine in for 500 miles

i cant say about wiseco pistons i've not got that far yet

 

[TFD]

Cheers for the reply. I would think it makes some sence using the old rings since they are worn in and fit the cilinder I reckon, but dubblecheck before you take the engine apart is a smart think lol

 

[vocky]

I would use the new piston rings as the originals will be well past their best, especially the oil rings

 

[TFD]

New rings and 86mm pistons in a unbored block is allright? Engine has 25k miles on it.

 

[vocky]

you should be okay with standard 86mm pistons, but you need to measure the gap in the rings before fitting them to the pistons, just insert them one at a time into the cylinder and measure the gap, use a dremel to adjust it until it's correct. I think it's something like 15 and 18 thou, but please check.

 

[TFD]

Ok, thanx for the info ;-)