Your stock pistons have a .200 dish, these have a .065 dish, will give you about 11.5 to 1. You can run 93 octane pump gas. They are only $32 each.

http://www.rockauto.com/catalog/raframecatalog.php?catalog=8&partnum=H851CP&a=FR8-H851CP

Raymond Great idea , But is there any thing in the high 9's or low /mid10's they will check my compression after a win, I will loose an 11 to 1 fight for sure with the folks in tech. some of the hondas run 9's/low 10's and that is a pretty good argument.

Raymond ,Maybe slightly better pistons than stock
AND
a cam regrind w/ the rockers as suggested by OHV notec.

Bob that gen2 stock car is awesome, you have some great info posted but a bit extreme for our class,but it gives me some great ideas for the PRO 4's for next year. got something a little more tame.
We played around with a Boondocker nos kit from my Yamaha Apex on the car it was pretty Cool , we had a hard time hidding the blue flames and bottle though... lol.

now here is a few more questions.

I have a 02 ohv with the head shaved .030 and it is not reassembled yet.
*would this be a better engine to build than the 95 ?
*what cam grind should I use and from who?
*now these pistons are diff then the 95's (would the rock auto H851CP's still work)?

have at it ..this is a championship caliber car.

I'm a chassis guy ,I have an engine buddy that takes care of this stuff . but I have to give him the parts that will work.
I have 3 nissan S13's and 1 S14 that make between 140-160hp .
But I have this cavi set up so good that a fellow racer jokes about giving me the "Best Pass in the Grass" award it runs every where even in the infield if I have to us it.




Thanks for the AWESOME feed back, guys

if i were you i would run the 02 pistons in the 95

you cannot run pump gas with this setup while racing... pump gas may take the compression on the street but not on the track running high rpm like we do

run race gas and pray they dont tech you... if they do tech you while you are pulling the rockers off for the whistler loosen the head bolts a little bit. also our local race track waits till the cars et cool to check the compression, if you track does that line up the grooves in the rings on a certain cylinder that will also bleed some ratio off

dont run anything of an agressive cam with the 95 computer it will not run right we have had a ton of problems with cams and the obd1 computer

i would do the 1.6 rockers but be careful if you use the 02 pistons as the clearence will be tight at about 10* atdc

heres a link to come pics of our stock style cavalier race car
http://viewmorepics.myspace.com/index.cfm?fuseaction=user.viewPicture&friendID=280473861&albumId=1144725

This shouldn't be too extreme.

Keep the '95 block and head. Zero deck the block. Surface the head .030". This should give you approximately 10:1 CR.

Take the cam out of the '02. Get it reground, intake duration of about 205*-210*, exhaust duration about 6*-10* longer than intake. Stock lobe centers. keep the valve lift to .470" with which ever rocker arms you choose. Sounds mild, which it is, but will idle near stock and give good off the corner torque and much improved straight away HP.
(If you want more lift, you'll need to get the CompCams 26981 springs, they fit stock dimensions/locks, retainers & seats. Max lift .525")

Get the ARPChevyy 60D V6 rocker arm studs (100-7201 M10 X 1.5 base, 3/8" X 24 top, used on the '97 & older 2.2s approximately $45 for a set of 12. 100-7221 Same as above, but in a two pack, approximately $12.) and a set of good aftermarket stock type steel rocker arms (non-roller) of ratio needed to keep with-in lift limits. A set of good chromemoley .080" wall 3/8" diameter pushrods that are approximately .040" shorter that the stock LN2s (to make up for the surfacing of the block and head). This set up will be nearly bullet proof and keep the correct valve train dimensions, to prevent damage.

A set of the +1mm valves will help a little too, if you think you can get away with stainless steel valves.

No single mod listed above will net any big gains, but following the above will net a decent gain across the stock rpm range, without being obvious.

This Is great stuff Guys, Thanks for all the Help!! if ya think of anything else I'll be checking back every day or shoot me a PM.

I'll post a picture of my car and keep ya updated with race results when our season starts,

question, is the regrind cam the only thing worth swapping into the 95 from the 2002 at this point. we have the head shaved and it is still dissassembled , we where originally going to build this on for racing until we found out that the 95 made more hp.

or is there still hope for my mint 2002 2.2 ohv, I have the complete car. well except for the ripped off rt side anyways

Will the manual trans from th 02 work on the 95 auto or will this mess w/ the computers also. believe it or not my auto is faster than all the other stick cars.. but I'd like to try it with a lite weight clutch and fly wheel.


thanks again.

Raymond Soos wrote:Your stock pistons have a .200 dish, these have a .065 dish, will give you about 11.5 to 1. You can run 93 octane pump gas.

Did you ever measure the dish volume directly? The dish also has a smaller diameter and larger fillet radius. When I cc'd the pistons, I calculated something like 14:1 with a zero-deck block.

Q33 racing wrote:Will the manual trans from th 02 work on the 95 auto or will this mess w/ the computers also. believe it or not my auto is faster than all the other stick cars.. but I'd like to try it with a lite weight clutch and fly wheel.

The tranny should swap fine.




fortune cookie say: better a delay than a disaster