speedracer2536

iTrader: (15)

well im putting my shortblock together and i have run into two issues.. one.. i had to get another piston due to one being cracked.. well it came with a rod as well.. i went to install it and the big end is to wide to properly fit onto the crank shaft.. when i torque'd it down the crank wont spin over.. can i have this rod machined to be thinner or do i need to put the new piston back on my old rod? the rods came from another lt1.. i thought they were all interchangable..anyone have any input on this??

second.. i have a set of 1.6 harland sharp rocker arms that scrape the bottom on the rocker arms on stud.. is there any way to remedy this? should i modify the rocker to clear? it is just takinng the paint of the rocker but i dont like that it hits... do they make a stud with a little fatter base on it? this is the kit that i have now.. and these are the rockers

http://www.jegs.com/...4-7104/10002/-1 studs

http://www.jegs.com/...1/1002/10002/-1 rocker arms

speedracer2536

iTrader: (15)

and just to clear it up.. i have seven rods and pistons from the original motor.. one piston and rod from another motor..

fleetmgr

Have the new piston installed on your old rod.

speedracer2536

iTrader: (15)

i think i found my mistake..i actually mixed more pistons and rods than i thought and wound up with 3 rods that have the pistons on backwards.. so i have two that have the chamfered sides facing each other.. would that cause the clearance to be too tight?

brucer

yep
the chamfers go towards the radii on the rod journal..

you need to pull the rods and pistons back out and check them.. make sure you didnt bend the rods if you torqued the rodbolts..

speedracer2536

iTrader: (15)

how would the rods bend?

lt1-xjs

I would suggest a competent shop build the motor.

speedracer2536

iTrader: (15)

it was an honest mistake.. i just wasnt paying attention.. i have built motors before..