i've got 153k miles, & I plan on rebuilding with arias 9:1 pistons, GE rods & an inlinepro blockguard this fall. my goal is 350 whp on pump gas, with the hondata s200 w/ boost & new valvesprings & retainers to allow a higher revlimit.

will the age of my block be any problems? metal fatigue, etc etc? anything I'm not thinking of?

 

no, not at all..... there is a member on this board who had a gsr motor with 140K+ and just a headgasket went 11.30's I believe... Tore it down, slapped some pistons and rods in (stock 140k+ sleeves) and went mid 10's.

 

Check the all the bearings and journals of the crank and rods to make sure they're smooth and have no scarring. Have a machine shop check the crank if you're not sure what to look for. The sleeves will probably have to be overbored .010"-.020" to clean them up but that's pretty standard. I rebuilt my old LS motor with close to 140k on the clock and it's running like a champ.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boostaholic &raquo;</TD></TR><TR><TD CLASS="quote">Check the all the bearings and journals of the crank and rods to make sure they're smooth and have no scarring. Have a machine shop check the crank if you're not sure what to look for. The sleeves will probably have to be overbored .010"-.020" to clean them up but that's pretty standard. I rebuilt my old LS motor with close to 140k on the clock and it's running like a champ.</TD></TR></TABLE>

cool. yea im planning on going .020 overbore, & i'll be replacing all the journals/bearings as well as microolishing the crank.

is there a limit to how high the internals of the motor can rev? most people only have to upgrade the valvetrain, but when does the bottom end become unstable?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b18cya &raquo;</TD></TR><TR><TD CLASS="quote">

cool. yea im planning on going .020 overbore, & i'll be replacing all the journals/bearings as well as microolishing the crank.

is there a limit to how high the internals of the motor can rev? most people only have to upgrade the valvetrain, but when does the bottom end become unstable?</TD></TR></TABLE>

FYI you can get a complete crank kit for $250 from standard crank.
This includes bearings for rods & mains. just need to send them your core.

maybe have a machine shop line hone your mains for $125 while your at it.

Then go .020 over and the bottom end will be just like new

I think that's a better route to go over micropolishing your crank and then matching bearings to it.

as far as how high you can go on an LS RPM wise I wouldn't go over 8K.
But that's just me.

good luck with the build.

 

i have a gsr meng!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boostaholic &raquo;</TD></TR><TR><TD CLASS="quote">Check the all the bearings and journals of the crank and rods to make sure they're smooth and have no scarring. Have a machine shop check the crank if you're not sure what to look for. The sleeves will probably have to be overbored .010"-.020" to clean them up but that's pretty standard. I rebuilt my old LS motor with close to 140k on the clock and it's running like a champ.</TD></TR></TABLE>

that's basically it for the most part. if there is not major damage to the crank journals and sleeves, then all you have to do is overbore/hone the sleeves and get the new, proper sized bearings. then gap the rings and assemble everything to spec.