So called engine builders suing machine shops?

my guess is the '07 rings are thinner.

 

I have a set on my desk will check them tomorrow. There are two parts numbers for pistons and two for rings for some gen two.

 

no hurry...this thread's over six months old.

 

i don't know if they're thinner, but on the 07 rings, the 1st ring has a step in it along the outside edge. if you look in the ring groove in the piston there is a corresponding step. the oil ring is also different. it has a lip on the inside, so that the scraper rings sort of sit "in" the expander ring, as opposed to on top and below. i've seen aftermarket oil rings that are like this. i didn't see anything different about the 2nd ring, but i didn't measure it.

 

well it certainly sounds like those wouldn't work in a standard ring land.
also sounds like it would be noticeable to a builder trying to install 'em.
builder had no conscience.

 

i think installing an 03 ring in an 07 would be an easy mistake to make (if you weren't familiar with SVs). to install an 07 ring in an 03, you'd really need to be asleep. you'd see the lip in the top ring immediately when you're looking at the ring to see which side is up. if i remember correctly, there's no lettering on the top ring.

 

i know nothing of svs but i did watch the op do a sv motor swap between races.
he was stayin' at a holiday inn.

 

cool cuz the rings are still sitting there

 

damn brought back memorys of getting my hand crushed by one of those bastards. Sure dont miss reaking of oil every night when i got off though

 

You used motor oil to masturbate back then?