Ok, im getting ready to rebiuld my B17A1 in my CRX. Rings are shot and starting to smoke. Prolly going with Type R pistons and hopefully cams to. Im wondering if I put supertech (or some other brand) valvsprings in it, with a rebuilt bottom end (honda rod and main bearings), will it be safe to turn it 9000rpm. And yes i have a 4-1 header and custom sheet metal intake manifold that makes power that high, dyno chart proved that. And some unmentioned spray.

Thanks for any feedback

 

my bro built a unicorn block w/ type r pistons he had to run race gas constantly-a good tune is key.

 

I'd upgrade the rod bolts to ARP while you have it taken apart if you wanna rev to 9k. I wouldn't rev to 9 if you don't upgrade the cams

 

ya no point without cams, ya ive got crome pro and dyno access so will be tuned.

 

K i got another ? will type R pistons work in my B17? some people tell me they wont work, but i though all 1.6-1.8 pistons are the same in vtec B's, I thought it was the rods and cranks that changed and not the piston pin locations.

 

I would really like to know also. I am in the same boat right now myself.

 

Yes; pretty much any B series piston is interchangeable if the bore is correct. You can calculate the CR here:

http://www.c-speedracing.com/howto/c...c/compcalc.php

 

its all deleted now

 

thank you sir that link is pretty usefull.

 

lol

 

omniman answered all your questions in his 1st paragraph. so just ignore his 2nd paragraph and don't be so sensitive on an internet forum.

and if you weren't a "noobie", you'd know that building a b17 is just like building a b16. only difference is the b17 crank-81.4mm stroke /rod length- 132mm and the b16 has a 77.4 stroke and the rods are 134mm in length. but you probably already knew that






^^see you're questions were answered

 

yes that info is easy to find, i couldn't find wether or not the wrist pin location was the same on all the pistons.

 

Are you talking "ITR" pistons or "CTR" pct pistons ?
Someone correct me If I am wrong here but don't pr3 pistons have a higher dome than USDM or JDM ITR'S ? I am well aware that pct's are frickin tall as hell.

 

Hint -> buy the b16 build dvd from Omniman. It covers all the basic info you need.

 

funny you say that i have a whole stack of them sitting next to me collecting dust.

i think we live in a time where people just dont have time to follow instructions.

 

Different compression height on the ITR piston. 30.23 mm as opposed to 30.00

 

hey omniman, did you move to Oregon?

 

no

why do you ask?

 

I was told you moved to the Oregon Coast

 

???

 

unless Oregon coast is in riverside ca. i have not moved. nor have i ever been there. dont beleive everything you hear on the interweb.

 

True dat.

 

if using ctr pistons not for sure with itr, you will also have a machine shop grind the rods a little and rebalance them to fit the pistons.