DaveEG6

i have an GSR Block wos bored to 81,5mm with B16B pistons
Block is B16A with Skunk2 Pro3 Cams

does this Setup work or is the p2v clearence bad !?

CR !?


PR3 head/B18C Block

STD = 12.58636786521145
.25 OS = 12.649248792586258

so i think i have ~12,8 CR

when the p2v clearance not enough is i cant use a cometic headgasket...but which !? .30", .40" or .57"

please help ^^

best regards from Austria

crazydominicanman

When you say does this setup work? What are you referring to? Yes your static comp is at 12.8:1, what octane fuel do you plan on tuning it with? Do you have all supporting mods for this setup to flow as it should?

- larger injectors
- larger TB
- Aftermarket IM or ITR by the least
- 2.5" exhaust

etc..can't expect nice numbers or a healthy setup without taking everything into consideration..As far as the P2v clearance, you are probably going to want to have your builder clay the motor to check this. PCT's do have a scary dome height and you mentioned the Pro 3's...

DaveEG6

sorry... the rest of the setup -->

B16 ported head
Injectors are 440's
ported 65mm B18C Throttle
ported JDM B18C Intake Manifold

DaveEG6

sorry... the rest of the setup -->

B16 ported head
Injectors are 440's
ported 65mm B18C Throttle
ported JDM B18C Intake Manifold

it will be tuned on 100oct

DDTECH

Get rid of the ctr pistons.

crazydominicanman

^ This. They'd do you more bad then good with your said setup..everything else looks ok...I'd look into some p30's if your looking to stay OEM

MikeySpec

LOL, no comment.

Ok, just trying to grasp this logically.....did you want him to do p30's on Pro3 cams?


And he's going to be on a higher octane....are CTR's still a no no?

DDTECH

TheShodan

iTrader: (14)

MikeySpec, just remember, not everyone is as meticulous of putting the CTR pistons in setups like you do. That's why its best to just say NO, and save him the hassle

DDTECH

I like to mess with Mikey, he has his ways of doing things, I have mine. Different stroke for different folks(no pun intended mikey).

I just know now and days people wont do what mikey does or take the time to measure things. So save yourself the hassle.

I'm done with the hating, talking **** or even getting upset on a forum, its no use. Everyone's here to help and learn.

SR20S13

I mean if you put it together like you should aka clay and measure clearances it might be fine but pro 3s are a big cam

93egSLEEPER

I seriously LOL'd when I read this thread title. There are only a handful of builders I would ever trust to pull this off successfully. I love how MAX compression with the BIGGEST CAMS seems to be the idea of making power for a street car on pump gas.

crazydominicanman

Dome height on ctr's is pretty high..he's gonna have to clay that motor. period.

00Red_SiR

On an NA motor, these are common things to do when trying to make more power. Any piston he uses to get to the compression level he wants, to run those pro 3 cams in an 81mm bore, are going to have a "large dome" on them.

93egSLEEPER

I realize that BUT what seems to be the kicker, at least on H-T lately, is so many guys are trying to build a DD with these parts. It truly is not practical to run IMO over 12:1 CR and over a "Pro 2" level of cam for a DD on pump gas. Can it be done? Yes. Has it been done? Hit and miss...and like I mentioned before only a handful of builders can achieve it with what I consider great success. You have to give to get, and I dont think many (if any) guys DDing a honda can afford the fuel to run CTR's and Pro 3's effectively. If he wants to make that much power then he needs to reconsider his base. A 2.0L will make the same power easier, and IMO safer.

I'm fortunate enough to have another car with high compression and a huge cam that I dont drive everyday.... but its a V8...back to my fuel theory.

SR20S13

I have yet to see someone run pro3's with CTR pistons, just saying.....and i'm in the middle of a CTR with Pro2 build that I plan to run 93 Octane and 104 at the track since well I can get it right down the road from me but 93 octane will have more conservative timing and at the dyno we shall see what 104 does and if power goes up and by how much

93egSLEEPER

GL with the CTR & Pro 2 build. If it clicks it should make good power. I was just making a statement that Full racing cams with 13:1+ compression is not a daily build by most peoples standards. It would be like me driving this every day...
http://youtu.be/VxhbWeCda3Y

Mr. EG

Hello large cam ^^. Brings back memories lol.

93egSLEEPER

I don't care who you are, nothing sounds better than a healthy V8 with a monster cam. OP if you can get your honda to sound like my chevelle, go for it

00Red_SiR

Actually it wouldn't be, unless you were running VTEC killer cams. The whole purpose of VTEC allows you to daily drive on "large" cams without all the old school issues. 92TypeR on here, daily drives his ITR on pro 3's and pump gas without issue as do many others. He's running a 2L but the guys at King Motorsports routinely build over 12-13:1 compression motors that run large cams on the street on pump gas.

The biggest problem with H-T these days are all the blanket statements being thrown around, about what you can and can't do, without the real world experience to back it up.

cibao2ner

13 compression can be done on the streets but not with ctr pistons....im running manleys on my build at 13:1 and so far no signs of detonation....but i did sand dow all the sharp edges and also a forged piston runs cooler...

00Red_SiR

why is that?

h2.4

Amen.

SR20S13

Its not that they run cooler, there is less hot spots since they don't absorbe heat as much, and ctr can be done and will be done, and I'm going to do it BUT you need to clay/degree your cams and deburring helps with hot spots

dirtyharryhatch

Meticulous? All he did was smooth and shave some off the edges on the dome of the piston.

I can def agree but sorry that chevelle sounds like ****. IMO. That thing needs a stroker asap or a BBC.

Exactly what i was thinking. 13+ compression pistons have very similar dome to the ctr.