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6 bolt rebuild help new rings.. HELP PLEASE

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DSM36

Probationary Member
11
0
Sep 18, 2007
Brighton, Michigan
Alright well im about to do a rebuild on my 6 bolt i did a compression test and these are the results
100-130-127-125dry
190-192-194-188wet
the way i see it, its bad rings so i was planning on ripping the block apart in the car and just buying new rings for the old pistons, and replacing the rod bearings while there out? is this a good idea or should i just leave the bearings? and is it ok to just replace the rings on the stock 1g pistons, i also have a old 7 bolt that got crankwalk so i could possibly have 2g pistons to swap for the 1g pistons? what do you think?
 
just started tearin it down today in my shopping for rings i found beck arnley as well as hastings chrome rings, any opinions on which may be better? I have arp head studs and a stock head gasket on there now but with plans of about 350hp do i really need the head studs? or could i just get head bolts from autozone and run thoes?
 
I blew two head gaskets on a 260hp engine before I got arp studs and MLS gasket.

I have 2g pistons and would only recommend them if:
1- you have good logging capability
2- you have fuel control
3- timing control or extra detonation control ie front mount, water inject.

with out 1 and 2 you may regret the swap. My 2g pistons forced me to purchase link before I really needed it.

As far as the build goes. If you've got a second car and don't mind pulling your engine any time you need to, you can really get away with what ever works for the moment. But if this is a major project for you, I'd hate to see someone spending a week end, a hole week, some people even a few months working on their car; just to half ass it..?

In the past two years I've :

pulled my head (head gasket)
pulled everything (full rebuild)
pulled everything again (engine swap to awd)
And now im starting a tranny rebuild.

Some times the cash will make your mind for you:D

I want you to have this " . " It took me a second, but I get it now... If I were you, I'd just go with stock Mitsubishi replacement rings.
 
so i wont be able to swap to 2g pistons and b ok running it as a daily driver until i can afford a logger and fuel control. i sold the afc a few months ago and im saving for a dsmlink as im now running stock boost levels and stock injectors. i have a front mount and i THOUGHT i could just run a colder plug and retard timing a slight amount? will that not work?
 
well head came off today and timing jumped took out 1 and 4 pistons and of course probably did a number on the head, but becasue of the wet test im guessing it needed rings anyway. i thought about the 2g pistons but i figured it wasnt worth the try if it could mean detonation, I located 4 1g pistons with rods and a 1g and 2g head if i can find a machine shop to drill the 2g head bolt holes to 12mm.
 
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