Rebuilding B18C(JDM ITR) with P30's - Honda-Tech

Go Back   >
Log In 


Rebuilding B18C(JDM ITR) with P30's

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 12-01-2009, 06:08 PM   #1
Honda-Tech Member
Thread Starter
 
SOHCunderdog's Avatar
 
Join Date: Jul 2006
Posts: 106
Default Rebuilding B18C(JDM ITR) with P30's

Good night H-T.

I have been doing a lot of research lately as my motor is ready for a rebuild. I do not want to overspend on buying forged internals when oem parts will do the job. I do intend on using arp rod bolts, head and main studs. No headwork to be done at this point in time.

So far while searching on this forum, I have found that people use the P30 piston in GSR's and such, but I haven't come across anyone using them in an ITR motor. I know the compression will vary a bit with the ITR head being different from the GSR head. I would like to bump the compression up a few points, but nothing drastic or pushing the limits. I know that I need to stay away from the CTR pistons as well.

Here are some info you all might want:
Goals: Hit 8.8sec on 1/8th.
Use: Drag(Street tires) and Auto-X
Budget: What a pity.....
Car and mileage: 96 Honda ITR. +140,000km

Thanks in advance for your input.
SOHCunderdog is offline   Reply With Quote
Old 12-06-2009, 04:42 PM   #2
Honda-Tech Member
 
crxfornow's Avatar
 
Join Date: Oct 2004
Location: Southern Illinois, usa
Posts: 1,294
Default Re: Rebuilding B18C(JDM ITR) with P30's

p30s would lower your compression
crxfornow is offline   Reply With Quote
Old 12-06-2009, 06:58 PM   #3
Honda-Tech Member
 
Join Date: Jul 2008
Location: St. Paul, MN
Posts: 1,258
Default Re: Rebuilding B18C(JDM ITR) with P30's

I think he means the JDM p30's
thundernoodle is offline   Reply With Quote
Old 12-06-2009, 07:00 PM   #4
Honda-Tech Member
 
Join Date: Oct 2000
Location: Kingston, Jamaica, WI, Jamaica
Posts: 50
Default Re: Rebuilding B18C(JDM ITR) with P30's

Quote:
Originally Posted by SOHCunderdog View Post
Good night H-T.

I have been doing a lot of research lately as my motor is ready for a rebuild. I do not want to overspend on buying forged internals when oem parts will do the job. I do intend on using arp rod bolts, head and main studs. No headwork to be done at this point in time.

So far while searching on this forum, I have found that people use the P30 piston in GSR's and such, but I haven't come across anyone using them in an ITR motor. I know the compression will vary a bit with the ITR head being different from the GSR head. I would like to bump the compression up a few points, but nothing drastic or pushing the limits. I know that I need to stay away from the CTR pistons as well.

Here are some info you all might want:
Goals: Hit 8.8sec on 1/8th.
Use: Drag(Street tires) and Auto-X
Budget: What a pity.....
Car and mileage: 96 Honda ITR. +140,000km

Thanks in advance for your input.
p30 will incrase your compression .2-.3
Dont waste you money, skim your head .015"
and raise your compression to 11.5 - 11.6 with the jdm Itr piston
and get cam gears flash your computer and have a nice day
4doortypeR is offline   Reply With Quote
Old 12-12-2009, 04:42 AM   #5
Honda-Tech Member
Thread Starter
 
SOHCunderdog's Avatar
 
Join Date: Jul 2006
Posts: 106
Default Re: Rebuilding B18C(JDM ITR) with P30's

Dont trust any machine shops to mill my head where I'm from.

Any other input guys. I basically just want to increase my performance without spending a pile of cash on forged internals.
SOHCunderdog is offline   Reply With Quote
Old 12-12-2009, 09:06 AM   #6
Honda-Tech Member
 
dj-t's Avatar
 
Join Date: May 2007
Location: middle cali, ca, ca
Posts: 358
Default Re: Rebuilding B18C(JDM ITR) with P30's

Aren't there company's out that makes thinner head gaskets to increase compression?
dj-t is offline   Reply With Quote
Old 12-19-2009, 10:00 AM   #7
Honda-Tech Member
iTrader: (1)
 
1tuffbb6's Avatar
 
Join Date: Aug 2007
Location: Maryland
Posts: 661
Default Re: Rebuilding B18C(JDM ITR) with P30's

Why would you stay away from the CTR pistons?
1tuffbb6 is offline   Reply With Quote
Old 12-19-2009, 10:23 AM   #8
All Motor Mentor
 
00Red_SiR's Avatar
 
Join Date: Aug 2004
Location: 902, Nova Scotia, Canada
Posts: 6,987
Default Re: Rebuilding B18C(JDM ITR) with P30's

Quote:
Originally Posted by 1tuffbb6 View Post
Why would you stay away from the CTR pistons?
it might have something to do with the 100+ threads that tell you to stay away from them and why. There are better alternatives.
00Red_SiR is offline   Reply With Quote
Old 12-19-2009, 10:30 AM   #9
Honda-Tech Member
 
kulo's Avatar
 
Join Date: Mar 2007
Location: suffolk
Posts: 1,776
Default Re: Rebuilding B18C(JDM ITR) with P30's

jdm p73s are nice
kulo is offline   Reply With Quote
Old 12-19-2009, 01:28 PM   #10
Honda-Tech Member
iTrader: (1)
 
1tuffbb6's Avatar
 
Join Date: Aug 2007
Location: Maryland
Posts: 661
Default Re: Rebuilding B18C(JDM ITR) with P30's

Quote:
Originally Posted by 00Red_SiR View Post
it might have something to do with the 100+ threads that tell you to stay away from them and why. There are better alternatives.
Links please.
1tuffbb6 is offline   Reply With Quote
Old 12-19-2009, 02:27 PM   #11
All Motor Mentor
 
00Red_SiR's Avatar
 
Join Date: Aug 2004
Location: 902, Nova Scotia, Canada
Posts: 6,987
Default Re: Rebuilding B18C(JDM ITR) with P30's

Quote:
Originally Posted by 1tuffbb6 View Post
Links please.
search please.
00Red_SiR is offline   Reply With Quote
Old 12-19-2009, 02:36 PM   #12
Honda-Tech Member
 
1.5Slowmatic's Avatar
 
Join Date: May 2008
Location: Sykesville, MD, USA
Posts: 3,035
Default Re: Rebuilding B18C(JDM ITR) with P30's

hes from MD, give him a break

they have a HUGE dome which hinders flame travel. you can achieve the same compression with regular ITR pistons and milling the head. Just people hear they are from the type r and they instantly think they are the best piston ever
1.5Slowmatic is offline   Reply With Quote
Old 12-19-2009, 02:42 PM   #13
Honda-Tech Member
iTrader: (1)
 
mar778c's Avatar
 
Join Date: Mar 2004
Location: PA, USA
Posts: 7,068
Default Re: Rebuilding B18C(JDM ITR) with P30's

OP just run RS machine pistons. They work exceptionally well with no head milling. Compression is not nearly as important as running a good intake, header, and exhaust.
mar778c is offline   Reply With Quote
Old 12-19-2009, 02:55 PM   #14
Honda-Tech Member
iTrader: (1)
 
1tuffbb6's Avatar
 
Join Date: Aug 2007
Location: Maryland
Posts: 661
Default Re: Rebuilding B18C(JDM ITR) with P30's

Which would have a higher compression between the P73 JDM ITR or the JDM P30 piston in a b18c5 long block?

And thanks for the people who aren't d-bags, what exactly would I search for "why not to use CTR pistons?" *** hat
1tuffbb6 is offline   Reply With Quote
Old 12-19-2009, 03:05 PM   #15
Honda-Tech Member
 
1.5Slowmatic's Avatar
 
Join Date: May 2008
Location: Sykesville, MD, USA
Posts: 3,035
Default Re: Rebuilding B18C(JDM ITR) with P30's

http://www.zealautowerks.com/bseries.html

have fun. the ITRs are slightly higher. They sit closer to zero deck and have a smaller dome than the P30's do
1.5Slowmatic is offline   Reply With Quote
Old 12-19-2009, 04:05 PM   #16
All Motor Mentor
 
00Red_SiR's Avatar
 
Join Date: Aug 2004
Location: 902, Nova Scotia, Canada
Posts: 6,987
Default Re: Rebuilding B18C(JDM ITR) with P30's

Quote:
Originally Posted by 1tuffbb6 View Post
Which would have a higher compression between the P73 JDM ITR or the JDM P30 piston in a b18c5 long block?

And thanks for the people who aren't d-bags, what exactly would I search for "why not to use CTR pistons?" *** hat

lol... Seriously I wasn't being an *** hat. I'll assume you haven't been to the All Motor forum before or at least in quite some time as this is one of the most discussed subjects in this forum. I asked you to search because I know there's a lot of information available if you'd at least make an attempt to find it. I'm not in the habbit of giving info to people that can easily be found with a little effort on their part. You could use your imagination and play with the search function and see what comes up, you could start off by typing in CTR or PCT pistons, narrow the search to the All Motor forum and see what you get. you could even type that question into google and see what you get...it's really that easy.
00Red_SiR is offline   Reply With Quote
Old 12-19-2009, 04:22 PM   #17
Honda-Tech Member
iTrader: (1)
 
1tuffbb6's Avatar
 
Join Date: Aug 2007
Location: Maryland
Posts: 661
Default Re: Rebuilding B18C(JDM ITR) with P30's

Thanks for the insight either way!
1tuffbb6 is offline   Reply With Quote
Old 12-19-2009, 04:27 PM   #18
Honda-Tech Member
 
kulo's Avatar
 
Join Date: Mar 2007
Location: suffolk
Posts: 1,776
Default Re: Rebuilding B18C(JDM ITR) with P30's

ff squad has a very nice write up on b-series pistons

http://www.ff-squad.com/tech/temp/pistons.htm
kulo is offline   Reply With Quote
Old 12-19-2009, 04:36 PM   #19
All Motor Mentor
 
00Red_SiR's Avatar
 
Join Date: Aug 2004
Location: 902, Nova Scotia, Canada
Posts: 6,987
Default Re: Rebuilding B18C(JDM ITR) with P30's

Their compression measurements are off quite a bit when they talk about the PCT pistons installed in the various blocks.
00Red_SiR is offline   Reply With Quote
Old 12-19-2009, 04:40 PM   #20
Honda-Tech Member
 
1.5Slowmatic's Avatar
 
Join Date: May 2008
Location: Sykesville, MD, USA
Posts: 3,035
Default Re: Rebuilding B18C(JDM ITR) with P30's

the search feature on this iste sucks since going vbulletin, not sure why, no other site has issues.
1.5Slowmatic is offline   Reply With Quote
Old 12-19-2009, 04:52 PM   #21
All Motor Mentor
 
00Red_SiR's Avatar
 
Join Date: Aug 2004
Location: 902, Nova Scotia, Canada
Posts: 6,987
Default Re: Rebuilding B18C(JDM ITR) with P30's

I agree and will often Google my search inquiries as it leads me back to HT most of the time.
00Red_SiR is offline   Reply With Quote
Old 12-19-2009, 08:33 PM   #22
Honda-Tech Member
 
egb18c5's Avatar
 
Join Date: Nov 2004
Location: NY
Posts: 1,117
Default Re: Rebuilding B18C(JDM ITR) with P30's

Quote:
Originally Posted by 00Red_SiR View Post
I agree and will often Google my search inquiries as it leads me back to HT most of the time.
funny thing is, 8 out of 10 times i search, not only do i find what i want, but it derails me and i learn some thing else. you'll be surprised with what u find
egb18c5 is offline   Reply With Quote
Old 12-20-2009, 04:49 AM   #23
Honda-Tech Member
 
B20typeR's Avatar
 
Join Date: Sep 2006
Location: wichita, ks, united states
Posts: 132
Default Re: Rebuilding B18C(JDM ITR) with P30's

i got b18c block gsr rods and crank wit jdm itr pistons...love it! its more reliable goin wit jdm itr pistons. wit ctr pistons u might be lucky ur car runs good wit 91. unless ur hometown has higher octane. heres my b18c wit jdm itr pistons



B20typeR is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
b18b1 with itr pistons 215HPLSVTEC Acura Integra 50 02-07-2014 07:30 PM
B18c1 with p73 Pistons no tune BC_Garage All Motor / Naturally Aspirated 43 11-19-2011 08:42 PM
USDM ITR Pistons in GSR Trying to BAR BC_Garage All Motor / Naturally Aspirated 29 07-03-2011 07:35 AM
b18c1 stock rebuild with USDM ITR pistons, need help with compression ratio/build sayanything Acura Integra 11 12-18-2010 01:08 PM
p30 or p73 pistons? 93egSLEEPER All Motor / Naturally Aspirated 6 12-19-2009 09:00 PM


Tags
1151, b18, b18c, bump, buy, compression, gasket, head, hondatech, increase, job, layer, p30, piston, pistons, single, type

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 08:22 PM.



Honda and the Honda marquee are registered trademarks of the American Honda Motor Company, Inc. Neither American Honda Motor Company nor its subsidiaries or affiliates shall bear any responsibility for Honda-Tech.com content, comments, or advertising. Honda-Tech.com is not affiliated with American Honda Motor Company in any way. American Honda Motor Company does not sponsor, support, or endorse Honda-Tech.com in any way. Copyright/trademark/sales mark infringements are not intended or implied.