Ive searched alot and have not come up with an assured answer. I was hoping i could get some input from anyone that is running this setup. Is the
v2v clearance and v2p clearance ok when cams are set to 0,0? I called Brian up at skunk2 and said that it should be fine but he can not say 100% that they will be ok.

 

Well we did the install and got the engine running, was sweating bullets the whole time as I was unsure of the clearences. Turns out that 0,0 on the degree was safe. No V2V or P2V issues. Now just waiting on the AEM uego to come in so we can tune it with hondata.

Setup

PnP head
skunk2 pro2 cams
crower dual valve springs/titanium retainers
stock JDM block
CAI
Custom fabbed exhaust

Still need to get myself a nice header to get the flow right, but even w/o the tune my butt dyno can definatly feel the difference. Plan to get a street tune done this week after the wideband comes in and then dyno tune soon after.

Already loving the cams tho, you can hear them camming a bit which gives the engine a whole different tone, hopefully i can keep that sound after the tuning.

 

have you slammed vtec yet? I believe the s2p2's need something like 3-4 degrees of separation in order to not have v2v contact in vtec...

 

you are making a big mistake...

i would suggest having your cams degreed before you bend or drop a valve

not to mention you shouldnt even run the pro 2s w/ stock pistons because you WILL bend your valves....

 

I have put it vtec quit a few times since the motor has been together, not hearing any noise from the vavles at all, only reason it was in vtec was just to confirm there was no P2V or V2V clearence issues from the giant *** vtec lobes. I honestly wasnt going to install the head till i called brian up at skunk2 to get his opinion, after he told me that clearence issues would be slim to none I gave the go ahead.

Wouldnt i be able to hear any sort of contact from the valves or piston from hitting each other?

 

You should of clayed the motor first before you even started it.

 

I agree and was my mistake, we were stupid far into the install before I even realized that we should have done that. With it running shouldnt i hear some noise from any kind of contact? I plan to get it degreed soon so hopefully no issues till then. It wasnt the smartest of choices from me to do it the way I did, I guess ill learn from my mistakes if I do run into issues.

 

from my experience, when I did a v2v clearance check on my s2p3's, at 0degrees on the intake and 0 degrees on the exhaust, there was a bunch of valve to valve contact. There is definitely supposed to be some degree of seperation between in the intake cam and exhaust cam... Should be something like plus 2 on ex and -1 on intake or something..

Call skunk and get the "safe settings" for the cams and at least run them that way or you will have a busted motor and a lot more headaches in the end...

as far as P2V clearance, I doubt you will have issues because the oem pistons do not have crazy high domes...

 

no the stock pistons dont have high domes but they DO have very tight valve pockets, the skunk tuner 2s will cause bent valves on stock pistons so running the pro 2s are definately a big mistake.

as for hearing any noises from v2v or p2v clearance issues, no you wont hear any noises while driving the car, you will simply end up droping a valve from the valves continuously hitting each other as im sure they have been.

as for p2v, you wont hear that contact either, but your valves could be bent right now and you wouldnt even know it. even a compression test wouldnt give you a clear answer.

if i were you i would pull the head back off, put it on a bench, lock the vtec rocker and check v2v at the 0 0 settings you have been running. if you have anything less thas .030 i would throw those valves in the trash because it will only be a matter of time before they break and destroy your motor.

also look closely at the pistons for any signs of valve contact, it should be pretty clear to see.

if everything checks out ok i will be VERY surprised and you will be VERY lucky for sure....

did you have to pull any fuel out of your tune to be able to start the motor after installing the cams?

 

see i just cant belive im running s2t2 cams im my h22 w type s pistons
and the head is milled .030 and i have never had any p2v contact
i had my type s pistons coated by swain tech so i would defentially be
able to see contact????? i have pulled the head off of the car 3 different times
just to check for contact and can find nothing? i have measured the p2v twice(mad sure vtec was locked in on the cycliner i was testing
and it will not contact even w cams gears agressive,,,w/0 a head gasket it was very close ,,i have heared n/a h2b say many time s2t2 cams are bad in
stock pistons motors that why have tripple check everything and cant find any contact?

 

what was your p2v?

the tuner 2s i ran a long time ago did put my valves into the pistons. it was borderline and they were only slightly bent after making room for themselves in the valve pocket of the piston. I spoke directly w/ skunk about it and was told the tuner 2s were meant to be run w/ aftermarket pistons w/ larger valve reliefs as the cams were too much for the stock pistons. at the time they had been getting alot of the same feedback from other people w/ the same problem i had. that all happened close to 10 yrs ago so im sure its possible they have tuned down their tuner 2s after all that went down...who knows?

are you certain they are tuner 2s? did they come directly from skunk and have you ever measured them and compared the lift to another set?

 

I can vouch that the Tuner 2's will not have any issues with stock pistons. I have run a set of Tuner 2's on a stock OEM internal block for several years, daily driven and track driven. I had sold them to a buddy of mine and he installed them on his stock block h22 as well and he never had issues either... The cams were purchased a while ago as well and like I said, no issues on stock pistons...

Pro 2's are a different story though. The way the cam is designed, it has to be degreed and v2v/p2v is a big issue.

 

on my h22 w type s pistons on a head milled .030
i was getting around .015 clearence w/0 a headgasket approx(i will have to find my notes
this was w exhaust -3 and intake +3)
so i knew it was tight but w a head gasket adding .026 i kewn it shouldnt hit
i got the cams from skunk2 about 3-4years ago they could of switch the grind????
or im just getting lucky who knows,,,,,,i have not compared thesse to the stock cams
at all a degree wheele confuses me oe of the reasons i went w a tunner cams cause they idle normal,,,,i used clay for the p2v testing witch is kinda in accurate as well but i tested many timesin did not hit,,,,,also the swain tech coating is white i have torn tons of times and the pistons look spot less....motor is down right down due to a aftermarket frm sleave being installed too loosely.....my motor on 12.0.1 approx cr w e85 made 250whp on hyech header and euro r im,,,,,,my new motor is getting the same combo but w 52mil itb's just wondering if you think there will be power over the euro R that can be found on the dyno? thanks

 

I'm going to have to agree in having p2v with pro 2s. But my previous motor had way less clearance than a stock block h22. I had an f23 crank with stock h22a1 pistons. That was 38 thousandths over the deck. I had the dome cut 30 and the valve reliefs cut 40 but I don't think the depth was cut. I had it set at 0 0. I started it up and it seemed to run fine. I wanted to hit vtec to make sure everything was working fine then boom. Pulled the head the valve hit the piston it exploded. The sleeve broke off and the rod looked like and S down in the block. So don't you think it's worth it to degree your cams in on your multi thousand dollar motor and not let this happen to you? It will give you piece of mind to know how far you are from destruction, and so it doesn't happen.

 

NAH2B
Do the JDM Type-S Pistons have larger valve pockets than the Standard H22 pistons?
I'm running Pro2 Cams with Type-S Pistons. It runs fine though....trying to decide if I should be worried about this.

 

What do you have your cams degreed to with the S2P2 and type s pistons?

 

+1 I / +4 E is what we are running at the moment.

 

Well, to update those interested in this thread:
Did a leakdown test on my engine last night and we got 6% leakdown in all four cylinders. So I may be lucky and not have had any p2v contact with JDM Type-S pistons and non-modified valve reliefs.

 

To the OP, whats the update man? I'm about to install my S2P2 cams and wanted to know how its running at 0,0 degree'd.

 

Bump. Building my block with stock h22a pistons. Running stock head for a little but I'll be running pro 1's or pro 2's in a few months so I figured id cut the valve reliefs now and save the trouble later. Anyone have a measurement of how much to cut them? Ive seen a pic floating around before as well if anyone knows where i can find that let me know. Thanks

Edit: Block will be resurfaced a very small amount dont have exact measurements now but im only taking off as little as possible. Using oem head gasket.

 

bump

 

wow sorry about the late reply, been super busy with things that i havnt bee on in awhile. I was running 0,0 for a week straight and had no issue with and no damage done to the pistons or valves, I did end up getting the pro series cam gears and setting them at -1, +3 to put my mind at ease tho.

 

These cams are fine to run with stock pistons though? How about the pro 1's?

 

Nice. I'm doing the same with mine except mine will be 0*I, +4*E. Still 4 degrees apart like ppl said.

Is there a certain procedure on how to go about adjusting the cam gears??

 

so some people had problems with pro2 and some have yet to have problems. tuner 2s work fine. how about pro 1s? i would really like to have a definitive answer because i already have my engine running using crower 2s so i cant take apart the motor to check for clearances but i am considering upgrading my cams before i tune. can someone please clarify? thanks.