GSC R2's with Supertech duel valvetrain is a NO GO
This is what i got... You can see the second "step" on the bottom of the retainer. If it were machined off like it would be with a single setup i would have enough clearance. Idk about other duels, they may be different but i would think most duel retainers have this step. Anybody got pics of another brand?


They are Tom.... They do not have that extra step. It must have been super close with my BR cams! I bet the S3's put if right at the limit.
Last edited by browningderek; Apr 7, 2013 at 04:50 PM.
http://www.power-division.com/popup_...%20all%204G63s
You can get the chromoly seats for like $30 extra
You can get the chromoly seats for like $30 extra
Not knocking you or your tuner but have you read anything about the cams they're meant for 2.2l and above motors not really 2.0s if you read English racings write up on them Aaron ( John Bradley the guy that did extensive testing on these) showed there's is nothing good to come from them on the 2.0 and stock frame turbos. I get a lot of ppl want the latest and greatest but these cams were designed for stroker motors and bigger turbos
Look up the right up from John Bradley is has all the info needed on these new r2s
Look up the right up from John Bradley is has all the info needed on these new r2s
The R2's are designed not to give up any low end or spool response where as say an S3 will affect that area a good bit.
We run S3's on stock turbos and 2.0's all the time with good results. The R2's are going to be the same except they won't kill the low end as much as the s3's. It really doesn't matter if they were designed for 2.2-2.3 or not, its still going to do the same thing on a 2.0L as far as how they open the valves up. <-- the 2.2-2.3 will benefit more though of course!
i'm not a cam expert, but cams are designed to focus on certain powerband RPM ranges when they are designed, so thats why when someone mentions s3 or 280 cams they will say oh you don't want those for the stock turbo because they are designed for high RPM setups with a big turbo. you want S1's. thats true, but you still can see really great results with a mismatched camshaft. I just did a stock turbo that made 470tq on s3's on a 2L. <-- can it make more with s1? maybe, but maybe not.
I'm sure it was already said, but R2's are another option besides the s3's for someone who wants all they can get for response and low/midrange without sacrificing top end as much. so the R2 is like a fine tuned s2 to get the best of both worlds. but the R2 will still not be able to give the same top end as the s3's. I even read Aaron @ English say that himself and if anyone knows he does 100%. Him and Lucas helped design them!
So the way i see an R2 is, its a highly advanced S2/S3 hybrid that is close to the S3 as far as top end goes with low end like a S2, and thats why GSC is calling it a game changer, because it is. no other cam manufacturer has tuned their cam profile like that to make low end good and almost have the same top end as larger 280's that suffer downlow to my knowledge.
im sure if you drove both s3 then R2, you would see a huge difference in how the car responds downlow/midrange, and understand why people are going to move to R2's and stay with R2's. i would imagine if GSC ever releases an R3, its going to be a fine tuned S3 with more kick downlow/mid but not lose any top end if thats possible.
again im not a cam expert, and im sure theres others that posted in here that know a lot more about cams then i do, but im just posting how i see the R2's and why they were designed.
in short, its a big *** cam that has more low/midrange power and still offers the same as bigger ones do uptop for the most part. best of both worlds.
my vote would be the GSC 5041 set.
Also take into account that you WILL need headwork for these cams. Running a stock ported head on these is a waste as it cant flow well enough to take advantage of anything over 11mm of lift.
I can't wait to be done with this and drive the car for a while!
So, what do you think...will the 5041 solve our problem? Would I need new seal with that as well?
i guess its true in a way that with proper head porting you will benefit way more from them, but saying you 100% need headwork or you won't see anything from these makes no sense to me.
The s3 makes power on a stock head because its keeping the valve open at 11mm for a longer duration then the stock cam, not because its lifting it to 11.7, same with an s2.
I talked to arron about these cams weeks ago and what i posted was exactly what he told me.
I talked to arron about these cams weeks ago and what i posted was exactly what he told me.
Last edited by EvoJoeIX; Apr 7, 2013 at 06:02 PM.






