I'm plannign on boosting my ls very soon on a stock block, well jsut today i came across some forged pistons...and it has me thinking.
Is it possible to change out pistons/rods/ bearings without pulling the motor? is it absolutely neccessary (sp) to hone to cylinder walls? if so can I do it myself with one of those drill attachments?
any help would be great

 

I have in this same situation, and I dont have clear what is necessary to do, but I thing if you replace pistons is needed hone & bone cylinders, also if you plains insert a block guard. Or install new sleeves.

If you replace rods also you need hone the crankshaft I think, but if you replace only rigns is not necessary do same with cylinders.


If some iluminated would reply please..


Regards.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ferrallas &raquo;</TD></TR><TR><TD CLASS="quote">I have in this same situation, and I dont have clear what is necessary to do, but I thing if you replace pistons is needed hone & bone cylinders, also if you plains insert a block guard. Or install new sleeves.

If you replace rods also you need hone the crankshaft I think, but if you replace only rigns is not necessary do same with cylinders.


If some iluminated would reply please..


Regards.</TD></TR></TABLE>

ya i thnk i'm just going to find a bare block, build it, then swap it. and is it really necessary to resurface the crank if it's in good shape? thanks for anymroe input

 

ttt
some one show off some engine building knowledge

 

ttt

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CivicVX94 &raquo;</TD></TR><TR><TD CLASS="quote">I'm plannign on boosting my ls very soon on a stock block, well jsut today i came across some forged pistons...and it has me thinking.
Is it possible to change out pistons/rods/ bearings without pulling the motor? is it absolutely neccessary (sp) to hone to cylinder walls? if so can I do it myself with one of those drill attachments?
any help would be great </TD></TR></TABLE>

Yes you can pull the rotating assembly apart with the block affixed in the vehicle however it is MUCH easier to work with out and you will save time. Once the pistons are out you are not required to bore and hone, however careful measurements are required when reassembling including: piston to wall clearance, main/rod bearing clearances, how far the piston is in the hole etc.

Honing is recommended...check into using the ball type hone if you do self-hone method and use a lot of lubricant as you make the passes

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ferrallas &raquo;</TD></TR><TR><TD CLASS="quote">I have in this same situation, and I dont have clear what is necessary to do, but I thing if you replace pistons is needed hone & bone cylinders, also if you plains insert a block guard. Or install new sleeves.

If you replace rods also you need hone the crankshaft I think, but if you replace only rigns is not necessary do same with cylinders.


If some iluminated would reply please..


Regards.</TD></TR></TABLE>

Installing a block guard can distort the upper portion of the cylinder and consequently reboring the block can sometimes be a necessity...no you dont need to hone the crank if changing rods, only precise measurments are required for bearing sizing.