I currently run Sk2 Stg2 cams (I know this is true checked it myself) and I thought the rest of my cyl. head was stock GSR. At the beginning of the race season I was revving to approx. 8600-8500rpm, now keep in mind I also have Jdm typer bottom and was also adv. 4deg on both cams!!! Is this even physically possible? I pulled the RPM down to a limiter @8400 and still no issues but the car is much slower thru the 1/4. My best with 8.5k shifts was 13.7, best with 8.2k shifts is 14.0/13.9, I need the RPM to keep my speeds up but its a bit scary. If it is not physically possible for that combo to hit 8.6k without contact what about TypeR springs? I will pull the valve cover back off and prob. the cam girdle to try and get abetter look at the springs and see if they are duals on the E cam. I want my times back . Thanks as always.

 

What was the point of this post?

 

I think what he is saying is he is running s2s2 cams on what he thought was stock valve train with no problems...yet.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by StreetracerVL &raquo;</TD></TR><TR><TD CLASS="quote">I think what he is saying is he is running s2s2 cams on what he thought was stock valve train with no problems...yet. </TD></TR></TABLE>


that's what i got out of the post as well^^

anyway, it is totally possible that the stock springs have lasted the season without any problems, I've heard many stories of people running aftermarket cams with stock gsr valvetrains for 20k-100k miles revving to 8500+ with no problems.
Then again, I've heard of motors blowing up due to running the stock valvetrain too.

I'm in the same boat as you being that I'm considering running and ITR valvetrain with aftermarket inner springs with aftermarket cams, not sure what to do yet...

some people just get lucky, but I don't wanna be one of the people whos entire motor blows because I didn't wanna spend the extra $300 for a valvetrain that can definetly handle the load down the line...

 

friend of mine reved skunk stage 1's on stock b16 valvetrain to 8500 for a while with no problems. Theres no tellin how long it would have lasted tho

 

just go buy some vavlesprings and install them.. if anything does happen it's going to cost a lot more then vavlesprings and retainers...

 

No, my point was just trying to figure out if it was possible at all to have GSR valve train and those kind of settings on those cams w/o contact. I checked with a mirror and flashlight to see the spring and sure enough it is the single spring on the ex. side. Now the limit is back down to 8400 shifting max @ 8200. I must be damn lucky to not lose a motor. I do have the parts to rebuild the head, but was just getting curious to see what could "safely" be done before the rebuild. But now I am not going to do anything crazy. Got luck enough the first time, dont think I'll try it again.

 

dude i dont know but thems some big cams and if u like your motor i would def invest in some valvesprings asap. Honestly i would have been scared to take it into vtec w/ those springs but i have never ran aftermarket cams (esp that big) on oem springs so i dont know.