Hi guys,

I have a bone stock GSR in an EG hatch right now and i plan on going the all motor route.

I plan on building it up as follows:

Head:
Ferrea SS valves
Ferrea Retainers
Ferrea Valve Springs
3 Angle Valve Job
Slight Port and Polish
Skunk 2 Stage 2 Cams/Skunk Cam Gears
ARP Headstuds
Skunk 2 IM
Stock GSR TB

Bottom:
PCT stock bore pistons
GSR rods
GSR crank

Now i've been doing some research to see what kind of compression numbers i'd get with the CTR pistons and i've even used the compression calculator on that website but i've heard it's wrong. I've heard answer of 12.1:1 all the way up to 12.8:1. So i'd like to know if anyone knows the exact compression i should be getting with this set up and an OEM headgasket and what kind of octane i should be running. I know tuning is a major key to this set up but i'd like to know if it would work first of all.

Also i'm goin to run a chipped p28 with this setup but i'm not sure what program to use. Also when do the S2S2 cams stop making power, i've heard around 8800, so would i be safe setting a rev limiter at 9000? I will be tuning with a vafc for now also.

Well those were pretty much my basic questions for now. And can anyone estimate any hp numbers with this kind of set up? Any other comments or options are welcome.


Thanks, Joe

 

Not sure of exact compression, but it will be up there, you should always use premium gas (whatever that may be) with high compression, detonation is a bitch.

I would save money and get Hondata, that chipped ECU will rob lots of power from you, just save up take the leap and get a standalone. My friend has a similar set-up with S2S2s in an LS/VTEC set-up and power drops off at around 8800 (Hondata tuned)

There is really no way to guesstimate power, there are too many variables. With a good header and a good tune you definately have a 200+ whp set-up. Its all about tuning it

Good luck

 

hey, thanks for the reply.

Yeah i was also considering hondata but i don't really know who to get it tuned at.

Thanks for the response, i'm going to be running a DC 4-1 header, not the greatest but it'll do, so i'm hoping with a good tuner i will hit my goal of 200+ whp

 

can anyone else help me out?

 

why do people say 3 angle valve job? it comes stock with a 3 angle valve job!

btw use PCT pistons ONLY if you want your motor to go kabloom

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EGkid &raquo;</TD></TR><TR><TD CLASS="quote">

Head:
Ferrea SS valves -stock valves are fine, if you really want to, use ITR intake valves
Ferrea Retainers -?not sure?
Ferrea Valve Springs - try ITR INTAKE outter valvesprings and portflow inners
3 Angle Valve Job??????????????????????
Slight Port and Polish - sure it couldent hurt
Skunk 2 Stage 2 Cams/Skunk Cam Gears -id go with RS MAGNUM cams first...
ARP Headstuds -yes
Skunk 2 IM -good
Stock GSR TB- bore it out to 64mm for $100 - http://www.gbronline.com/jorgep/index.html

Bottom:
PCT stock bore pistons -NO
GSR rods - cool
GSR crank -cool

and ARP rod bolts if you wnat to be safe

and as for piston choice i would personally use OS JDM ITR or OS USDM ITR, or OS JDM P30s.

going oversize is the only way you truely know your bore is true and your ring gap will be in specification. it bascally depends on how many miles your block has on it...i'd say anything over 90,000- use overbore.

and use a chipped p28, but please, get someone to make a custom program for you. there are MANY people here on h-t that will do that for you for pritty cheep (10-20bux) and it is MUCH better than "blind" chipping your ecu (running it off a program designed for a completely differant engine)

</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SkRiBLaH &raquo;</TD></TR><TR><TD CLASS="quote">why do people say 3 angle valve job? it comes stock with a 3 angle valve job!
</TD></TR></TABLE>

i often wonder this myself

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SkRiBLaH &raquo;</TD></TR><TR><TD CLASS="quote">btw use PCT pistons ONLY if you want your motor to go kabloom</TD></TR></TABLE>

why would it go kaboom?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EGkid &raquo;</TD></TR><TR><TD CLASS="quote">

why would it go kaboom?</TD></TR></TABLE>

Because of the clearance issue. Before running this motor you are going to want to clay your motor.

Im running kinda the same setup ctr pistons in a gsr block with jun 3. Not sure on the compression exactly,as i have gotten a lot of the same answers you have. But Ive gotten quite a few people saying im somewhere around 12:5 -12:6

 

sorry to jack your thread but i was also considering running some ctr's in my gsr, why would there be clearance issues? Well the only real way to find out would be to clay the motor i guess.

I think you'd be better off with some p30's or pr3s even

BUMP


Modified by nY's FiNeSt at 11:24 AM 5/18/2004

 

so it would be a toss up if the ctr's would or wouldn't have clearance

and like the other guy said, would i be better off going with a p30 or pr3?

 

bump for me

 

u have valve clearance issues because dome height of pistons is so high do u definitely want to @ least plastigauge if not clay for safety but compression will be really hjigh close to almost 13:1:1 it could be from 12;5:1-12:8:1 . u might have 2 run toulene which is expensive or race gas talk to importreview jeff he's really great

 

thanks for the suggestion, i just emailed jeff basically asking what i asked you guys

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 99lsvtecauto &raquo;</TD></TR><TR><TD CLASS="quote">u have valve clearance issues because dome height of pistons is so high do u definitely want to @ least plastigauge if not clay for safety but compression will be really hjigh close to almost 13:1:1 it could be from 12;5:1-12:8:1 . u might have 2 run toulene which is expensive or race gas talk to importreview jeff he's really great </TD></TR></TABLE>


Compression is really high yes and clearance is really close but you would be surprised what gas you can run. like i said i have almost the same exact setup . The only difference is my compression might be a llittle higher with my valves. Im running 95 in my motor just because i can get it at the pump. But before i was aware that quite a few gas stations were carrying that i was running 93 octane on a sock computer. Once you get some tuning done you will have no problem at all on pump gas. Im actually thinking of switching out pistons for some thing that puts me some where aroung 11:5-12:0 this. By doing this i wll have better valve to piston clearance and allow me to touch the cam gears. If kinda sucks haveing a good cam and not being able to see all its potential.

 

yeah i see where you're comming from, i'd rather go with a slight less agressive piston and not have to worry about piston to valve clearance issues and still be able to max out my cams potential.

I'm thinking about going with pr3's now, it should place me about 11.7:1 compression ratio with a thin headgasket. So i think i should be safe that route.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EGkid &raquo;</TD></TR><TR><TD CLASS="quote">yeah i see where you're comming from, i'd rather go with a slight less agressive piston and not have to worry about piston to valve clearance issues and still be able to max out my cams potential.

I'm thinking about going with pr3's now, it should place me about 11.7:1 compression ratio with a thin headgasket. So i think i should be safe that route.</TD></TR></TABLE>

What kind of head gasket, are you looking at a 2 layer or 1 layer. If you do switch out your OEM 3 layer for one of these it will bump your compression. In my opinion it probably wouldnt be worth the money to take a step down to like a 2 layer that .3 extra compression really isn't going to do much for you. I would just save your money and put it towards something else.

 

the compression calculator said i would get about 11.3:1 compression with the pr3's in my set up. I've heard that it is way off and it should be a bit higher, can i net about 11.5:1 to 11.8:1 compression with these pistons?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EGkid &raquo;</TD></TR><TR><TD CLASS="quote">the compression calculator said i would get about 11.3:1 compression with the pr3's in my set up. I've heard that it is way off and it should be a bit higher, can i net about 11.5:1 to 11.8:1 compression with these pistons?</TD></TR></TABLE>

Thats about my guess. Not sure on it completely, like i said i thought i was much lower then i was. But when i talked to alot of people about my set up that seem to know more about the compression then most. They were giving me about .6-1 more compression then what i thought it was or that most were telling me it was. Mainly because at first the numbers i was getting from people were the ones from the compression calculator. I have a friend who back in the day had a gsr motor with a set of jdm b16 pistons with jun 3's and he said pretty assuringly that his compression was about 11:7-11:8. Now this was back in like 2000-2001 and with his juns the motor pulled , it destroyed turbo and nitrous cars from a roll and a stop. On the highway it was like a different car. Then only tunning device used on his a setup was just a VAFC. Since your running Skunk stage 2's with this set up and they have such a close comparison with Jun 3' you should be good with the compression of around 11:8. Good luck with the motor. I would really like to see some numbers when you get this tunned. Also who do you plan on tuning the motor for you.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by T.J. &raquo;</TD></TR><TR><TD CLASS="quote"> I have a friend who back in the day had a gsr motor with a set of jdm b16 pistons with jun 3's and he said pretty assuringly that his compression was about 11:7-11:8. Now this was back in like 2000-2001 and with his juns the motor pulled , it destroyed turbo and nitrous cars from a roll and a stop. On the highway it was like a different car. Then only tunning device used on his a setup was just a VAFC.</TD></TR></TABLE>

and who would this be???

 

yeah i can't wait to get it tuned myself, hopefully i'll hit my 200+ whp goal and hopefully run a very low 13.

not too sure who i'll get to tune it yet, need to search around alittle on that

 

All most the same setup as yours but without the

Ferrea SS valves
Ferrea Retainers
Ferrea Valve Springs
3 Angle Valve Job
Slight Port and Polish


My Setup

b18c1(block-n-head)
ctr o/s pistons type r valves
itr thorttle body
hondata intake manifold gasket
Skunk2 stage 2 cam ,valve srings,retaniers n intake manifold
S2000 fuel pump ,lucas 440cc,str fuel rail
ported 00 jdm itr header ,high flow cat ,mangaflow
hondata s200
93 octane

Hondata


The dyno Soooooo close to 200whp
https://honda-tech.com/zerothread?id=861581

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by G2AT8K &raquo;</TD></TR><TR><TD CLASS="quote">
My Setup

b18c1(block-n-head)
ctr o/s pistons type r valves
itr thorttle body
hondata intake manifold gasket
Skunk2 stage 2 cam ,valve srings,retaniers n intake manifold
S2000 fuel pump ,lucas 440cc,str fuel rail
ported 00 jdm itr header ,high flow cat ,mangaflow
hondata s200
93 octane</TD></TR></TABLE>

did you run into any clearance issues with the ctr cams?
how do you like your set up btw? any 1/4 mile times?

 

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EGkid &raquo;</TD></TR><TR><TD CLASS="quote">

did you run into any clearance issues with the ctr cams?
how do you like your set up btw? any 1/4 mile times?</TD></TR></TABLE>


I'm not running ctr cams but I am running ctr pistons with skunk stage 2 cams . No clearance issues here but I wouldn't adjust the cam gear too much with stage 2 . You should clay your motor . No 1/4 miles yet haven't had time yet maybe this Friday or Sunday