Ok my Nephew is going all motor ls semi fully built his car will be done next tues. this is what they going to do stage 1 port with 5 angle competiton job with some JG or Crower cams but wich are better and he waz asking me if the PR3 pistons are Type R pistons or B16a first generation i told him that it waz B16a 1st generation pistons but he thinks they are Type R please help me settle this lol and type r what is that other name for it PR......what???..............And oh yea whats a good tranny the B16,GSR, or the Ls.THANX YA

 

Crower's I've heard break a lot. You'll also need upgraded valve springs and retainers to run any kind of stageII or III cam. If I was you I'd do it for any stage I as well. Type R pistons are p73ao I believe and jdm type r pistons are p73oo. PR3 are different. Go to this website and check out all the different piston choices along with the block and head you are using. This will help you find your compression ratio as well....http://technet.ff-squad.com/cr-calculator.htm.

Piston choice is important when your trying to decide what you want out of your motor. I would spend some more time doing some research.

Also, larger cams benefit from more compression. This will lead to the need for engine management and tuning which will add to the costs of your project.

Tranny choice is up to you and your budget. B16, gsr, itr, ls, will all have different gear ratio's ect. For a high performance motor I would suggest an ITR tranny with LSD. If you can't afford that, get a GSR. I don't see any upsides to using a B16 or LS tranny.

Good luck, do some more homework so you'll know what your getting into.

 

pr3's are regular b16a pistons

p73s are Integra Type-R pistons P73-A0 is the USDM version, while P73-00 is the JDM version.

PCT's are Civic Type-R pistons. (b16b)


The term "type R pistons" gets thrown around a bunch, so thats just to clarify. there are two different "Type R's" (integra and civic) for b-series pistons.

 

ok help me out wich gasket is goot should i go with 3 layer or the 1 layer i see that the one layer will give me more Comprsion than the 3 layer and is a 1 layer gasket reliable.Next question is this motor is going to be a daily driven car so chek this out not enough cash to get some cams going to stay stock 99 ls cams for now but this is the set up stage 1 port PR3 or P30 pistons want to reach 11.1 compresion cuz only 92 or 93 octain in dallas tx so help ya please. And shold i get a block guard cuz going to run such a high compresion.

 

P30 pistons are close to 11:1 in an LS motor w/ a stock 3-layer headgasket. I'd keep the 3-layer if its going to be a daily driver.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98Itr-0448 &raquo;</TD></TR><TR><TD CLASS="quote">Crower's I've heard break a lot. </TD></TR></TABLE>


On Vtec cams b/c ppl dont know how to change the lost motion assembly!!!


On Non-vtec, do not worry about it! Crower 403 or 404's are what you are looking for! I have had them both and if you are upping the compression then go with 404's! You will need to upgrade valvesprings!

As far as pistons go! PR3's and JDM ITR's yield the same compression in an LS(10.8:1). P30 Pistons will give you a 11.1:1CR; while CTR Pistons will give you 11.6:1 CR

For a good gasket, use Cometic!

Good luck!!!

 

PS. A b16a tranny is a way better tranny to use than a gsr tranny because it is very similar to the type-r tranny w/o the lsd....gsr has diff. gear ratio and ls tranny has very long gears and benefit turbo motors alot more , i would use ctr pistons for the comp. ratio and crane cams w/crane springs and retainers.... also might want to think about upgrading the valves to ferrera stainless(stronger, more durable )under those conditions , a good head gasket will help , but i do not rec. using higher comp. head gasket with the ctr piston combo because you may bump the comp. too much ...

a good intake mani-skunk2 or at least a match ported mani would help as well!!!

 

P30 pistons, pnp head, crower 404's wit valvetrain, and a b16 tranny tuned should make close 2 170whp at the wheels. And if this is a daily driver than thats good enough. What car is this going in? Cause this setup in a hatch would run low-mid 13's all day on drags wit a good driver.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lsed-eg &raquo;</TD></TR><TR><TD CLASS="quote">PS. A b16a tranny is a way better tranny to use than a gsr tranny because it is very similar to the type-r tranny w/o the lsd

</TD></TR></TABLE>

B16 tranny works very well, but dont waste the money, go ahead and spend the extra money on an ITR tranny they are built better with stronger internals and will out last a b16 tranny! Trust me Ive gone through my fair share of B16 trannies!

 

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


On Vtec cams b/c ppl dont know how to change the lost motion assembly!!!


On Non-vtec, do not worry about it! Crower 403 or 404's are what you are looking for! I have had them both and if you are upping the compression then go with 404's! You will need to upgrade valvesprings!

As far as pistons go! PR3's and JDM ITR's yield the same compression in an LS(10.8:1). P30 Pistons will give you a 11.1:1CR; while CTR Pistons will give you 11.6:1 CR

For a good gasket, use Cometic!

Good luck!!!

</TD></TR></TABLE>

Crower was also experimenting with different grades of steel at the time when you heard many horror stories of Crower cams breaking.

 

its going in to my 91 integra this is what im doing to the head stage 3 port 5 angle valve job with stock internals and 99 ls cams for now but not sure wich pistons to go with PR3 or P30 im looking to get 11.1 ccompresion. Just wondering wich is better.help!!!

 

pr3 are the usdm b16 (easier to find).. which should put you at 11.1
p30 are the jdm b16 (harder to come by "jdm" ).. should put you at 11.3

i would stay with the pr3's.. you can get them easier at the dealer

 

p30 come in the 99-00 civic si's. U can always find them on ebay 4 like 50 bucks. I thought p30's 11.1:1 and pr's were like 10.9:1, but i could b wrong.

 

yea me too i tought pr3's give like 10:9 and p30 gives u 11:1 hmmm on that site it tells me the p30 gives me more comression. Well like i said its going to be a stage 3 port 5 angle valve job with stock internal for now including 99ls cams. And one questions by porting or a angle valve job will that increase the commpression or not. If not will the crower cams will with aftermarket internals... i heard that does help me solve this problem thanx.

 

a pnp head does not raise ur compression so no worries thier, ur good.

 

so joobost13 what u think i should go with P30 or PR3 would love to get 11:1 CP with that little set up im going to have how much hp will i get and how much to the wheels do u know???

 

With a good pnp, crower 404's with p30 pistons u should b close 2 if not thier around 160whp 2 the wheels. Make sure u get the valvetrain 2, cause u need it 4 those cams.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by joboost13 &raquo;</TD></TR><TR><TD CLASS="quote">p30 come in the 99-00 civic si's. U can always find them on ebay 4 like 50 bucks. I thought p30's 11.1:1 and pr's were like 10.9:1, but i could b wrong.</TD></TR></TABLE>

You're right P30's yield 11.1:1CR and PR3's yield 10.8:1CR! As far as P30 coming in a 99-00 Civic Si, Not so sure! However you can get them off e-bay or from a buddy w/ an B16(2nd gen swap) motor who is upgrading his pistons!


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by joboost13 &raquo;</TD></TR><TR><TD CLASS="quote">With a good pnp, crower 404's with p30 pistons u should b close 2 if not thier around 160whp 2 the wheels. Make sure u get the valvetrain 2, cause u need it 4 those cams.</TD></TR></TABLE>

404's are Damn good cams!

 

Damm it my mechanic said the P72 ao are the type r pistons but he wont belive me arent those GSR pistons if so how much compration will that give me......help

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Roy2377 &raquo;</TD></TR><TR><TD CLASS="quote">Damm it my mechanic said the P72 ao are the type r pistons but he wont belive me arent those GSR pistons if so how much compration will that give me......help</TD></TR></TABLE>

P72-AO is the USDM GSR Pistons

P73-00 JDM ITR
P73-A0 USDM ITR

Hope this help you out!

 

yea it did help me out just to make sure those where the wrong ones u know no im trying to call him to let him know what up but the workers say he aint there i hope he can exchange them. If i waz to go with those pistons the P72 Ao how much CP will i get from them.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Roy2377 &raquo;</TD></TR><TR><TD CLASS="quote">yea it did help me out just to make sure those where the wrong ones u know no im trying to call him to let him know what up but the workers say he aint there i hope he can exchange them. If i waz to go with those pistons the P72 Ao how much CP will i get from them.</TD></TR></TABLE>


9.8:1 CR (P72-A0 in B18A/B)


Try Pr-3's or P73-00

 

yea i know i want to try those but my mechanic is soooo stubern plus he is a friend of mine wich sucks lol but anywho im going to set him straight to try to put the PR3 or the P30 i really want the P30's love that 11:1 heh but i think he already assemble my engine so i think its to late but with the GSR pistons the usdm it will give me 9:8 wich is not bad compared to the stock ls wich is 9:2. And one more question what are the CP ratio of each engine........GSR,B16 and the TYPE R???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Roy2377 &raquo;</TD></TR><TR><TD CLASS="quote">so joobost13 what u think i should go with P30 or PR3 would love to get 11:1 CP with that little set up im going to have how much hp will i get and how much to the wheels do u know???</TD></TR></TABLE>

 

With a good pnp, crower 404's with p30 pistons u should b close 2 if not thier around 160whp 2 the wheels. Make sure u get the valvetrain 2, cause u need it 4 those cams.

i'm making around 165 to the wheel with NO bottom end work!
404 are the ****