SR bottom end rebuild

[timtiminy]

hey guys i had a few questions about rebuilding the SR20det's bottom end. the bottom end that i am getting has one piston with the edge chipped off (ring land snapped?) i was thinking on possibly just getting a used piston for that one cylinder and replacing the rings on all 4 (this option looking the best so far, but wondering what rings i should get..just oem?) I am only looking to get about 300whp so I dont see a need in getting forged internals. But I was thinking about just doing new oem pistons since i would have everyting apart... anyhow i was looking at courtesyparts.com nd saw that there are quite a few piston choices (just wondering if anyone knew the differences (grade #'s and the vvl one) looks like the vvl one is the cheapest...

SR20DET Piston/Std(Grade #2) (http://www.courtesyparts.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=A2010-00006&Category_Code=)
Code:A2010-00006
Price: $50.00
Quantity in Basket: none



SR20DET Piston/Std(Grade #3) (http://www.courtesyparts.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=A2010-00007&Category_Code=)
Code:A2010-00007
Price: $50.00
Quantity in Basket: none






SR20DET Piston/0.2mm/.008" (http://www.courtesyparts.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=A2010-00008&Category_Code=)
Code:A2010-00008
Price: $50.00
Quantity in Basket: none



http://www.courtesyparts.com/Merchant2/graphics/00000001/sr20det/A2010-00009_t.jpg (http://www.courtesyparts.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=A2010-00009&Category_Code=)SR20DET VVL Piston (1) with Pin (http://www.courtesyparts.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=A2010-00009&Category_Code=)
Code:A2010-00009
Price: $40.00
Quantity in Basket: none

[CKAMC]

go find a FSM, it will explain to you how to find out which one you need.

VVL I think has a different dish design on the top of the piston since its compression is setup for a different head (like the difference between ka24e and ka24de pistons)

[timtiminy]

thats what i thought about the vvl piston... looks like it would be higher compression... i just didnt think there was a difference in the other 2, but perhaps there is?

[CKAMC]

your best bet is to talk to the people over at SR20forum since they are more likely to have had a VVL in their car or have had done a rebuild.