dajman94

Ive already done a search and could not find the answer.....so, I'm puting JDM CTR pistons in my Stock B18B1 motor. From what i've heard....this setup will not clear the head properly, so i need to know what rods to buy as to make this happen the right way....are there any rods from stock honda's that are the right length....if so, tell me from wat motor so i can find aftermarket rods for that motor and know that they will fit.....and they need to be beefy so they can handle the compression. And also...what compression ratio should i get out of this? Thanks for your time.

AgentZero

dajman: I'm not sure about the piston to head interference...but the C/R should be something like 11.5:1 or 11.4:1 (as according to http://www.c-speedracing.com/h...c.php )

Good luck with your project- those pistons rock!! I hope you've got some CTR cams to go along with the pistons

dajman94

bump

redDAinteg

how can he use CTR cams when he has a b18b.


Modified by redDAinteg at 12:08 AM 6/14/2005

gsrious

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by redDAinteg &raquo;</TD></TR><TR><TD CLASS="quote">how can he use CTR pistons when he has a b18b.</TD></TR></TABLE>
b series pistons are interchangable

**some with minor mods

dajman94

i still havnt been told what rods from what engine will work.....someone please...this is important. Thanks

BUMP

dajman94

durka durka bump

redDAinteg

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AgentZero &raquo;</TD></TR><TR><TD CLASS="quote">dajman: I'm not sure about the piston to head interference...but the C/R should be something like 11.5:1 or 11.4:1 (as according to http://www.c-speedracing.com/h...c.php )

Good luck with your project- those pistons rock!! I hope you've got some CTR cams to go along with the pistons</TD></TR></TABLE>

how can he use CTR cams when he has a b18b. (excuse me, I said pistons above,but i meant cams.)

dajman94

if you do some research you will find that almost all b series engine internals are interchangable, that my friend....is why they are so popular.

dajman94

bump

95lstegman

the PCT (Civic Type-R) pistons will press onto the PR4 (LS) rods just fine, with a tiny little bit machined off the rod. do a search for this and you should find pics of exactly what i'm talking about. other than that, you should be set since pistons from VTEC motors have much larger valve reliefs to compensate for the VTEC engines' higher lift cams and larger valves. you should have tons of free space between those pistons and your valves. just FYI, B16 pistons like the PR3, P30, and PCT sit closer to the deck than B18 pistons do, so if you get bigger cams you might want to clay the motor to make sure there will be no interference. with compression like that i sure hope you intend to use aftermarket cams. otherwise tuning for street gas will be a lot more difficult. your dynamic c/r will be above 11:1 with stock cams.

BuyImports2

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dajman94 &raquo;</TD></TR><TR><TD CLASS="quote">if you do some research you will find that almost all b series engine internals are interchangable, that my friend....is why they are so popular.</TD></TR></TABLE>

if this is in response to being told that you can't use ctr cams then you are the one who needs to do searching. if you didn't know that then you have some serious learning to do.

95lstegman

furthermore, that's not the reason they're so popular. look at toyota's A series and S series engines . . . interchangeable parts, yes, but not that popular. nothing like Hondas. Hondas are popular because for many many years Honda has been building cars that are reliable and fun to drive, with hearty engines that are fun to drive because they like to rev, and rev well. all of their cars follow this basic plan, so cheap, older cars are readily available for young people to purchase and have fun with. Honda has long been ahead of the game as far as technology goes, and it shows in their suspension designs and engines. "Without racing, there is no Honda" ~Soichiro Honda. Hondas have always been inspired by being fun to drive. that's why they're popular. fun + abundant = Honda. some say and i agree, however, that they may be starting to lose touch, namely citing the current Civic Si. next year should bring redemption, though, with a 200hp 6-speed LSD Civic with Brembos at all 4 corners.

numbnuts22715

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BuyImports2 &raquo;</TD></TR><TR><TD CLASS="quote">

if this is in response to being told that you can't use ctr cams then you are the one who needs to do searching. if you didn't know that then you have some serious learning to do.</TD></TR></TABLE>


yep.. hes correct.. You have to remember b18b's are non vtec and ctr's are vtec.

dajman94

i wasn't refering to the ctr cams...i was talking about the pistons....and if i was talking about the cams...yes it is still possible to use them, you just have to have an ls vtec setup and they will swap out ust fine. Thank you very much.

DvD3

omg this is just a giant pile of noobs talking rofl. CTR pistons will work on the bottom end of the engine, not sure about head clearance. The cams will not work cuz its a non-vtec head. there.

Kendall

Personally, I'd avoid the headache and use JDM P30's.

ernald711

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DvD3 &raquo;</TD></TR><TR><TD CLASS="quote">omg this is just a giant pile of noobs talking rofl. CTR pistons will work on the bottom end of the engine, not sure about head clearance. The cams will not work cuz its a non-vtec head. there.</TD></TR></TABLE>

hahahahahahaaaaa noobs.. ..i agree with everything he said... use the LS rods for the ctr pistons. they'll work fine. i'd recommend modifying ARP rod bolts if your concerned about the high compression. i use .25 oversized ITR pistons on ls rods on my b18b1 block. no problems there.

as to what kendall said. jdm p30s will also do wonderfully.

95lstegman

to the original poster, here are some quick STATIC compression ratios for B18B:
11.8:1 with PCT (Civic Type-R Pistons)
11.4:1 with P30 (JDM B16A '92+)
11.2:1 with PR3 (USDM B16A, JDM B16A '89-'91)
11.2:1 with P73 (JDM Integra Type-R)
10.7:1 with P73 (USDM Integra Type-R)

remember these are STATIC compression ratios. some of the people on this board run as high as 12.5:1 STATIC c/r on PUMP GAS because they have very large camshafts, which help lower the DYNAMIC compression ratio back to high 10's or low 11's. with small, stock LS camshafts you should be careful with how high you go with static compression ratio.

also worth noting is that the P73-00 (JDM Integra R) and PR3 pistons have similar dome volume, thus yeilding almost exactly the same compression ratio, but all Type-R pistons have an anti-friction coating on their skirts. putting this coating on pistons in the aftermarket is fairly expensive, but Honda already does it for next to nothing over the cost of B16 pistons.

i hope all of your questions have been answered now.

dajman94

you're friggin retarded.....obviously you didn't care to notice that we' were talking about jdm ctr pistons which WILL NOT WORK on the stock b18b1 bottom end without modification to the rods.

Yambor

mill the small end of the rod on either side 1mm and you will be able to properly install ctr pistons on ls rods.. 400th post im special!


The B18C1, B18C5, and B16B rod are 1.96-2 mm narrower (0.858 in. vs. 0.935 in. in non-R rods) at the crank end (or rod "big end") and will not fit on the other Honda B series cranks or pistons.

On the small end of the rod (from FF Squad):