Re: Pistons & Rod combo or piston's
 

My mistake i should have clarified that the .20 over was meant to imply .20 over stock engine bore size. As far as Piston to wall clearance if im not mistaken forged pistons are most likely slightly harder to machine together then?...meaning bore to piston... just because of the expansion rate of the metals? or does a machinest know all of those specs when going to machine the block?

Either way at the moment this is a purchase thread not a Tech thread :D I will be picking up Goatblowers set within the next upcoming days, and some plasti gauge for bearing clearances on less somebody has a better idea of how to measure clearances.

This might be a noob question as well as the wrong place to post this, however Honda engines have i believe 3 different standardized bearing sizes for both main and rod bearings. Example if one bearing has to tight or to loose of a clearance you have one other option without machining or replacing the rod or crank or cap, now does Mitsubishi do a similar thing? I have Fresh ACL 5 layer bearings i believe it was from my first rebuild i got an order of two bearing set for some reason and was just curious as to how that works?

Last but not least, Honda also orientates its piston rings a specific way in order to maximize combustion chamber sealing. Again are our pistons required to have the rings clocked a specific way? I have not done the research on positioning of rings yet but will be doing it before installing them. Quick answers are appreciated like usually :)!

By the way in case you wonder why so many honda references (Because i went though the honda pact tech program at dunwoody and well the primary engines we rebuild were honda's yay loss for me :D)

Re: Pistons & Rod combo or piston's
 

Best engine ever purchased! Solid Sucker...its a shame i damaged it by making a careless mistake. Either way thanks for chimming in John, and well be in touch soon!

Re: Pistons & Rod combo or piston's
 

Exact position of the ring gap shouldn't matter, though you shouldn't line up the gaps together for top/bottom ring. From what I've read, they actually rotate while in use so the starting position of the gap doesn't matter all that much.

Re: Pistons & Rod combo or piston's
 

Back in the day...?

My Je pistons are slap happy when cold. My ptw is right around .004. They quiet down when they get warm.

Re: Pistons & Rod combo or piston's
 

Ha, I thought they might have changed that by now. That was the reason I've been using Wiseco's all these years. JE was the piston of choice for the Buschur motors back around 2001.

Re: Pistons & Rod combo or piston's
 

I can explain all this stuff when you pick up the stuff. But yeah, IIRC, the 95-97 motors used different sized bearings based on the stampings on the block, I remember Rick Shindley rebuilding crankwalked 2G motors and showing me this, I've only built 6-bolt and EVO motors.

Re: Pistons & Rod combo or piston's
 

best way to measure would be a dial bore guage and a good set of calipers and then plastigauge for a final test.

for anything u need to know on dsm check out jafromobile on youtube. everything else is a quik search.

for 7bolts i bealieve it is 1g, reg thrust, and split thrust

Re: Pistons & Rod combo or piston's
 

goatblower the point i was trying to make was if he had a ptw of 6 already because of pistin size diff. oh well

Re: Pistons & Rod combo or piston's
 

Sounds good blower, and i agree as far as the ring rotation...never looked into if they are capable of rotating a complete 360 degrees....and i figured the bore and caliper gauge would be the only way to go measuring the rod with its cap on when you pull it and then measure the crank journal do some math and go from there. I think itll be tricky doing it with the crank in place, but hey whats the worst that can happen I SEIZE MY ENGINE YAY!

Thanks for all the input guys, I really appreciate it and hope to have the car running again this weekend!