chris2000

I found out that Toda made forged 82mm piston for B18C. Is it safe to run 82mm on stock block without reselving or i am better off with running 81.5mm?

Thanks.

Chris

black_EM1

You're fine at 82mm. Sort of a short answer, I know, but if you look there's quite a few builds like this.

fmrprojects

82mm will be okay

SkoundrelUSA

I have 82mm on my C1 block. I'll let you know when it gets fucked up

chris2000

I intend to run these 82mm piston in track race use, and engine will be seeing consistent 9000rpm shift point and over my country here, many racers says that 82mm pose too much stress on the very thin liner and it will crack after a couple of race!

This worry me as i won't be able to replace new block and rebuilt every couple of races.. Need a reasonable quick setup that can at least last a season of race with 6 meetings.. Every race weekend i cover about 150km racing km..

What other options are there for forged piston in 82mm other than Toda?

dude_123

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chris2000 &raquo;</TD></TR><TR><TD CLASS="quote">What other options are there for forged piston in 82mm other than Toda?</TD></TR></TABLE>

WISECO

MikeSarr_GSR

does 1mm matter all that much?

chris2000

I really don't know whether 1mm will matter that much or not and i saw another thread here asking whether to 81mm or 82mm.

But track racing here is so competitive now and many people run 81 or 81.5mm here. New regulation states we can have the engine capacity to 1900cc without touching stroke, so i guess the only way is to bore them up a bit to gain as much power as we could to keep competitive times.

So i'm just looking at building another motor for the new series but wanted it to be reliable cost can't afford to keep rebuilding the engine after every meeting.

My current setup with stock ITR bottom end with just mill and ported head, TODA C cams delivered only 174.5whp at dyno dynamics dyno. You think this is kinda low?

CHEETAH

iTrader: (2)

the toda pistons are so light and the oil ports are top notch ... built a setuo like that for a customer about 4yrs ago and this guy street races everyday lol i just posted the block for extra rigidity so the sleeve doesnt float... better than the blockguard
youll be fine with those

btw get a set of light pro a rods to top it off

chris2000

Thanks for the advise.

Heard great things about TODA pistons but they are actually really expensive to get it over here.

In fact i found out USA made pistons are actually cheaper and i can source CP X-Style Forging piston 12.5:1 but only in 81.5mm.

Many were recommending me to us Wiseco pistons. Which is better CP X-Style or Wiseco??

chasemyhonda

i believe toda is expensive either way.

I asked this same question in hopes of some serious builders input like Rocket, Tbone, Omni ect. but i didnt get much feedback.

I was thinking of using the RS machines cast pistons that are available in 82mm.

chasemyhonda

Bump for more input???

CHEETAH

iTrader: (2)

the toda pistons are similar to what cosworth does for ford lol ... the todas are really light. now wiseco by endyn is a great piston, i'd contact endyn if i were you, http://www.theoldone.com

greg

Chillinit

What is the intended use of your setup? Do you plan on running any spray in the future?

IMO a cast piston would be suffice if you were daily driving your car and hitting the races on the weekend (ie. not strictly a race car). I pretty sure a cast piston is avaliable in 82 mm.

chris2000

It is a proper track car strictly for race use only. Race regulations does not allow NOS. All motor mods only restricting to std B18C block.

will check eydne website now...

chasemyhonda

i was thinking about getting some of those RS machine pistons.. they have ITR CTR P30 pistons 81, 82, ect i believe

B18C Turbo

Im running an 82mm GSR with JE pistons 9:1 compression. I could not find anyone other than JE to get me low compression 82mm.

dc2lee

Can you run a stock cylinder head if you do the bore too 82mm on the block or should you do like skunk 2 cams and gears too while ur in thr

Full_Tilt

This thread is 11 years old.