CTR PISTON COMPRESSION RATIO

**speedminded** · 03-23-2006, 11:23 AM

Originally Posted by Jdm94Coupe

so ctr pistons in a ITR wouldnt be better then the ITR pistons...... man i was JUST bout to pm you about the exact same thing u 2 are talking about! lol... o and another thing

how much is a ITR complete bottom end w/ 26k miles worth? $$wise

No more than $1,500, I've seen them on Honda-tech for that price and that's what i got mine brand new for.

**Jdm94Coupe** · 03-23-2006, 11:25 AM

Ok good..... some STUPID asshole tried to tell me last night it was worth $350.... i almost killed him through my computer.... lol.... btw speedminded do u do body work???.... ima prob sell my block for bout 1200 or so

**speedminded** · 03-23-2006, 11:32 AM

Originally Posted by Jdm94Coupe

Ok good..... some STUPID asshole tried to tell me last night it was worth $350.... i almost killed him through my computer.... lol.... btw speedminded do u do body work???.... ima prob sell my block for bout 1200 or so

You have an ITR shortblock?

**Jdm94Coupe** · 03-23-2006, 11:38 AM

i have a ITR full swap....and a ls long block w/ ctr pistons rebuilt...and a gsr tranny....and a new job, LOL!!

**speedminded** · 03-23-2006, 11:40 AM

Originally Posted by Jdm94Coupe

i have a ITR full swap....and a ls long block w/ ctr pistons rebuilt...and a gsr tranny....and a new job, LOL!!

Mmm, full itr swap...where did you run across that?

**Jdm94Coupe** · 03-23-2006, 11:43 AM

well u know what they say..........

everythings on ebay! lol...... nah totaled itr a minute ago, lol....

**Jdm94Coupe** · 03-23-2006, 11:44 AM

btw i just looked at ur cardomain.... do ur calipers RED, lol....

**speedminded** · 03-23-2006, 12:29 PM

Originally Posted by Jdm94Coupe

btw i just looked at ur cardomain.... do ur calipers RED, lol....

if i had charcoal wheels i would, dunno how red and bronze would look together.

**Jdm94Coupe** · 03-23-2006, 12:43 PM

o damn ur wheels look charcoal in the pic in your sig, i thought you re did them, lol nvm

**Jdm94Coupe** · 03-23-2006, 12:45 PM

btw wut do u run in the 1/4.... ur car runs quick (watched the video)

**speedminded** · 03-23-2006, 12:48 PM

Originally Posted by Jdm94Coupe

btw wut do u run in the 1/4.... ur car runs quick (watched the video)

dunno, never ran with the LSD...was spinning 2nd and 3rd gear before.

**BLk92DA** · 05-13-2006, 04:20 AM

Originally Posted by Jdm94Coupe

btw wut do u run in the 1/4.... ur car runs quick (watched the video)

**Jdm94Coupe** · 03-23-2006, 02:57 PM

oh ok ok

**Jdm94Coupe** · 05-13-2006, 10:07 AM

wutz so funny?^^^ somethin u need to say to me?

**silversol** · 08-21-2006, 01:38 AM

nevermind

**y-49** · 09-15-2006, 01:22 AM

i was gonna order some oem ctr pistons for my ls/vtec im building but i want to run pump gas. so not a good ideal. what kind of compression would i have with a ls with b16 head? im glad i read this before i started waisting money. lmk thanks

**Vteckidd** · 09-15-2006, 07:56 PM

The b16 head is listed with CTR pistons an LS block.

your BEST BET is to run PR3 pistons, itll be a much better engine. trust me

**AllmotorDC4** · 01-08-2007, 12:05 AM

I was wondering, would it be safe to use itr pistons on a Ls? With a built Ls head?

**RISKYB** · 09-18-2007, 11:07 PM

thanks for the info mke

**k20** · 10-18-2007, 12:48 AM

ls block with gsr head and ctr piston ...is it safe

**Thundercat** · 10-18-2007, 01:26 AM

Originally Posted by k20

ls block with gsr head and ctr piston ...is it safe

P72 head/B18A/B Block

STD = 13.170743903246784
.25 OS = 13.236528215133324

You like Pump Gas ???

**mr.koupe** · 10-25-2007, 10:05 AM

here you go for all your b series compression calculation needs.... rep me plz

http://www.clubcivicquebec.com/compr...r_bserie_f.php

**Mangrum** · 02-19-2008, 05:57 PM

wow you really went into detail.. thank you that helps alot

**southside** · 04-28-2008, 07:06 AM

what about b16 pistons in a ls with ls head

**Samhonda95** · 04-28-2008, 11:49 PM

Not to go againts anyone but I had a stock ls bottom end with a type-r head (cams,intake,tb, etc.) and built a ls bottom end with .20 ctr's and swapped it out. Needless to say, it runs very well.

**TheChosenOne** · 04-29-2008, 01:04 AM

What he said.

All that stuff about CTR pistons being the devil is uneducated lies. I had a ls/vtec with CTR pistons and it ran like a slave on the underground railroad: Fast and with a purpose!

All that really matter is build quality. Think about it. If they really were that troublesome, than Honda would have never made them.

**southside** · 05-01-2008, 07:45 AM

Originally Posted by southside

what about b16 pistons in a ls with ls head

Since no one seen it the first time.

**Vteckidd** · 04-29-2008, 01:43 AM

Uneducated lies?

nah its proof

Just because you got lucky doesnt mean everyone else will.

CTR Pistons were designed for short stroke CTR engines.

not 89mm stroke LSVTECs.

Honda never inteneded those pistons to go into other combos of engines.

Uneducated? this info has been around before you even were on IA or had a honda to mod.

Me an johnzm found this info out like 5 years ago when i was building my OEM 190whp GSR. He built a GSR with CTR pistons, and he had nothing but problems, he had to pull 10 degrees out just to avoid detonation.

ANyone that has TUNED or DYNOED a CTR pistons powered GSR or ITR or LSVTEC KNOWS that its a problem.

Anyone that knows a LSVTEC with GSR Head and CTR pistons knows that the engine WILL BLOW UP because the CTR pistons stick out of the hole and will hit the head. eventually a rod bearing will get pounded out.

So no, its not lies, its backed up by the likes of

Omniman- Inventor of LSVTEC
DonF- Engine builder 40 years
Jim Justice- #1 engine machinist in USA

and many others.

**Vteckidd** · 05-01-2008, 10:18 AM

thats fine

**southside** · 05-01-2008, 03:21 PM

what should the compression ratio be?

**n1accord** · 10-10-2009, 11:39 PM

What this guy said

Originally Posted by southside

what should the compression ratio be?

**Josh miller** · 12-20-2008, 12:22 AM

my gsr hatchback was like half a car i thought gsr post to beat h22 whats faster

**Jazze Ek** · 02-15-2009, 06:20 PM

What would you say to a gsr with ctr pistons and flat face valves and head ported

**Vteckidd** · 02-15-2009, 07:15 PM

Originally Posted by Jazze Ek

What would you say to a gsr with ctr pistons and flat face valves and head ported

it will blow up, compression will be around 13+:1

Run ITR or PR3 Pistons

**Jazze Ek** · 02-16-2009, 11:19 PM

Have already put the setup in and have not had anything 2 go wrong with the motor and it pulls really good. Could this be something that could go wrong later on

**Vteckidd** · 02-17-2009, 11:45 AM

like i said, you are on 13:1 compression, you WILL detonate . Get it tuned

**Boosting EG** · 02-17-2009, 12:08 PM

Question,

GSR block , 40 over ctr piston , gsr rods and crank and a B16 head is that safe and what power are we talking about or would you go with , GSR block , LS rods and crank , CTR pistons a B16 head ?

**Vteckidd** · 02-17-2009, 12:15 PM

Originally Posted by Boosting EG

Question,

GSR block , 40 over ctr piston , gsr rods and crank and a B16 head is that safe and what power are we talking about or would you go with , GSR block , LS rods and crank , CTR pistons a B16 head ?

YOu are reading the thread right?

I dont advocate CTR pistons in ANY MOTOR unless its a pure B16 (1.6 Block and head)

Any of the setups you listed will be well over 12.7-13.3:1 compression which is way too high for the street.

you will be better off using B16 Pistons, flat top is a much more efficient piston

**Boosting EG** · 02-17-2009, 01:06 PM

thanks

**Jazze Ek** · 02-17-2009, 03:57 PM

it will be tuned soon but can i get by with a vtec controller and i also have a 97 itr ecu

Thread: CTR PISTON COMPRESSION RATIO

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