Go Back   Honda-Tech > Honda and Acura Technical Forums > All Motor/ Naturally Aspirated
Sign in using an external account
Register Forgot Password?
Search


Welcome to Honda-Tech!
Welcome to Honda-Tech.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Honda-Tech community today!


Reply
 
 
 
submit to reddit
 
Thread Tools Search this Thread
Old 12-01-2009, 06:08 PM   #1
SOHCunderdog
Honda-Tech Member
Garage is empty, add now
 
SOHCunderdog's Avatar
 
Join Date: Jul 2006
Posts: 106
iTrader Rating: (0)
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
crxfornow
Honda-Tech Member
Garage is empty, add now
 
crxfornow's Avatar
 
Join Date: Oct 2004
Location: Southern Illinois, usa
Posts: 1,294
iTrader Rating: (0)
Default Re: Rebuilding B18C(JDM ITR) with P30's

p30s would lower your compression
__________________
-------------------------------

Level 7 Motorsports<--Reppin.
crxfornow is offline   Reply With Quote
Old 12-06-2009, 06:58 PM   #3
thundernoodle
Honda-Tech Member
Garage is empty, add now
 
Join Date: Jul 2008
Location: St. Paul, MN
Posts: 1,240
iTrader Rating: (0)
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
4doortypeR
Honda-Tech Member
Garage is empty, add now
 
Join Date: Oct 2000
Location: Kingston, Jamaica, WI, Jamaica
Posts: 50
iTrader Rating: (0)
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
__________________
www.islandspice.cjb.net
4doortypeR is offline   Reply With Quote
Old 12-12-2009, 04:42 AM   #5
SOHCunderdog
Honda-Tech Member
Garage is empty, add now
 
SOHCunderdog's Avatar
 
Join Date: Jul 2006
Posts: 106
iTrader Rating: (0)
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.
__________________
Try something different.....
SOHCunderdog is offline   Reply With Quote
Old 12-12-2009, 09:06 AM   #6
dj-t
Honda-Tech Member
Garage is empty, add now
 
dj-t's Avatar
 
Join Date: May 2007
Location: middle cali, ca, ca
Posts: 357
iTrader Rating: (0)
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
1tuffbb6
Honda-Tech Member
Garage is empty, add now
 
1tuffbb6's Avatar
 
Join Date: Aug 2007
Location: Maryland
Posts: 648
iTrader Rating: (0)
Send a message via AIM to 1tuffbb6
Default Re: Rebuilding B18C(JDM ITR) with P30's

Why would you stay away from the CTR pistons?
__________________
*CHARM CITY TUNING*
1tuffbb6 is offline   Reply With Quote
Old 12-19-2009, 10:23 AM   #8
00Red_SiR
All Motor Mentor
2000 Honda Civic
 
00Red_SiR's Avatar
 
Join Date: Aug 2004
Location: 902, Nova Scotia, Canada
Posts: 6,987
iTrader Rating: (0)
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.
__________________
"And what have you ever done besides troll on H-T and act like you have a clue? A cam swap? A shiny car with expensive wheels? Hard parking nut swinging troll...." -Natural Aspirations describing the All Motor forum and saying what needs to be said.
00Red_SiR is offline   Reply With Quote
Old 12-19-2009, 10:30 AM   #9
kulo
Honda-Tech Member
Garage is empty, add now
 
kulo's Avatar
 
Join Date: Mar 2007
Location: suffolk
Posts: 1,679
iTrader Rating: (0)
Default Re: Rebuilding B18C(JDM ITR) with P30's

jdm p73s are nice
__________________
Jdm ap1 bb sold
ek b18cr motor parted out
jdm itr dc2 rhd 98 my dd/track car
kulo is offline   Reply With Quote
Old 12-19-2009, 01:28 PM   #10
1tuffbb6
Honda-Tech Member
Garage is empty, add now
 
1tuffbb6's Avatar
 
Join Date: Aug 2007
Location: Maryland
Posts: 648
iTrader Rating: (0)
Send a message via AIM to 1tuffbb6
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.
__________________
*CHARM CITY TUNING*
1tuffbb6 is offline   Reply With Quote
Old 12-19-2009, 02:27 PM   #11
00Red_SiR
All Motor Mentor
2000 Honda Civic
 
00Red_SiR's Avatar
 
Join Date: Aug 2004
Location: 902, Nova Scotia, Canada
Posts: 6,987
iTrader Rating: (0)
Default Re: Rebuilding B18C(JDM ITR) with P30's

Quote:
Originally Posted by 1tuffbb6 View Post
Links please.
search please.
__________________
"And what have you ever done besides troll on H-T and act like you have a clue? A cam swap? A shiny car with expensive wheels? Hard parking nut swinging troll...." -Natural Aspirations describing the All Motor forum and saying what needs to be said.
00Red_SiR is offline   Reply With Quote
Old 12-19-2009, 02:36 PM   #12
1.5Slowmatic
Honda-Tech Member
Garage is empty, add now
 
1.5Slowmatic's Avatar
 
Join Date: May 2008
Location: Sykesville, MD, USA
Posts: 3,035
iTrader Rating: (0)
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
__________________
Quote:
Originally Posted by Bisimoto View Post
The single cam is the greatest thing conceived since fossil fuels. LOL
1.5Slowmatic is offline   Reply With Quote
Old 12-19-2009, 02:42 PM   #13
mar778c
Honda-Tech Member
Garage is empty, add now
 
mar778c's Avatar
 
Join Date: Mar 2004
Location: PA, USA
Posts: 7,014
iTrader Rating: (1)
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.
__________________
Good people:
Synapse Motorsports, CHEETAH, 4g hatch, Innovative MotorWorks, Importdps, Dynamic Performance, and Nutzurchin
mar778c is offline   Reply With Quote
Old 12-19-2009, 02:55 PM   #14
1tuffbb6
Honda-Tech Member
Garage is empty, add now
 
1tuffbb6's Avatar
 
Join Date: Aug 2007
Location: Maryland
Posts: 648
iTrader Rating: (0)
Send a message via AIM to 1tuffbb6
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
__________________
*CHARM CITY TUNING*
1tuffbb6 is offline   Reply With Quote
Old 12-19-2009, 03:05 PM   #15
1.5Slowmatic
Honda-Tech Member
Garage is empty, add now
 
1.5Slowmatic's Avatar
 
Join Date: May 2008
Location: Sykesville, MD, USA
Posts: 3,035
iTrader Rating: (0)
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
__________________
Quote:
Originally Posted by Bisimoto View Post
The single cam is the greatest thing conceived since fossil fuels. LOL
1.5Slowmatic is offline   Reply With Quote
Old 12-19-2009, 04:05 PM   #16
00Red_SiR
All Motor Mentor
2000 Honda Civic
 
00Red_SiR's Avatar
 
Join Date: Aug 2004
Location: 902, Nova Scotia, Canada
Posts: 6,987
iTrader Rating: (0)
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.
__________________
"And what have you ever done besides troll on H-T and act like you have a clue? A cam swap? A shiny car with expensive wheels? Hard parking nut swinging troll...." -Natural Aspirations describing the All Motor forum and saying what needs to be said.
00Red_SiR is offline   Reply With Quote
Old 12-19-2009, 04:22 PM   #17
1tuffbb6
Honda-Tech Member
Garage is empty, add now
 
1tuffbb6's Avatar
 
Join Date: Aug 2007
Location: Maryland
Posts: 648
iTrader Rating: (0)
Send a message via AIM to 1tuffbb6
Default Re: Rebuilding B18C(JDM ITR) with P30's

Thanks for the insight either way!
__________________
*CHARM CITY TUNING*
1tuffbb6 is offline   Reply With Quote
Old 12-19-2009, 04:27 PM   #18
kulo
Honda-Tech Member
Garage is empty, add now
 
kulo's Avatar
 
Join Date: Mar 2007
Location: suffolk
Posts: 1,679
iTrader Rating: (0)
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
__________________
Jdm ap1 bb sold
ek b18cr motor parted out
jdm itr dc2 rhd 98 my dd/track car
kulo is offline   Reply With Quote
Old 12-19-2009, 04:36 PM   #19
00Red_SiR
All Motor Mentor
2000 Honda Civic
 
00Red_SiR's Avatar
 
Join Date: Aug 2004
Location: 902, Nova Scotia, Canada
Posts: 6,987
iTrader Rating: (0)
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.
__________________
"And what have you ever done besides troll on H-T and act like you have a clue? A cam swap? A shiny car with expensive wheels? Hard parking nut swinging troll...." -Natural Aspirations describing the All Motor forum and saying what needs to be said.
00Red_SiR is offline   Reply With Quote
Old 12-19-2009, 04:40 PM   #20
1.5Slowmatic
Honda-Tech Member
Garage is empty, add now
 
1.5Slowmatic's Avatar
 
Join Date: May 2008
Location: Sykesville, MD, USA
Posts: 3,035
iTrader Rating: (0)
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.
__________________
Quote:
Originally Posted by Bisimoto View Post
The single cam is the greatest thing conceived since fossil fuels. LOL
1.5Slowmatic is offline   Reply With Quote
Old 12-19-2009, 04:52 PM   #21
00Red_SiR
All Motor Mentor
2000 Honda Civic
 
00Red_SiR's Avatar
 
Join Date: Aug 2004
Location: 902, Nova Scotia, Canada
Posts: 6,987
iTrader Rating: (0)
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.
__________________
"And what have you ever done besides troll on H-T and act like you have a clue? A cam swap? A shiny car with expensive wheels? Hard parking nut swinging troll...." -Natural Aspirations describing the All Motor forum and saying what needs to be said.
00Red_SiR is offline   Reply With Quote
Old 12-19-2009, 08:33 PM   #22
egb18c5
Honda-Tech Member
Garage is empty, add now
 
egb18c5's Avatar
 
Join Date: Nov 2004
Location: NY
Posts: 1,110
iTrader Rating: (0)
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
__________________
Perfection is perfected.
egb18c5 is offline   Reply With Quote
Old 12-20-2009, 04:49 AM   #23
B20typeR
Honda-Tech Member
Garage is empty, add now
 
B20typeR's Avatar
 
Join Date: Sep 2006
Location: wichita, ks, united states
Posts: 132
iTrader Rating: (0)
Send a message via ICQ to B20typeR Send a message via AIM to B20typeR
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

Click the image to open in full size.

Click the image to open in full size.
B20typeR is offline   Reply With Quote
 
 
 
submit to reddit
Reply

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
Forum Jump



All times are GMT -8. The time now is 02:53 AM.



2008 Copyright, InternetBrands Inc.
Powered by vBulletin® Version 3.7.4
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.

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.
Emails & Contact Details