gts_143

No. It was assembled just as the specs read, i.e the mild cams were in it when it was first started & was road tuned as best as i could with no air/fuel meter, then after it was run in i put it in the dyno day that i mentioned earlier & the guy told me that that the peak power mixtures were very close. However the timing hasnt been really pushed to the limit & the cam timing hasnt been set up using a dyno so power is not 100% of its capability. But, even so, its not far off & i know that it will not get much more the way it is unless i get bigger cams so i think its a waste of time dynoing it any further. i still intend on retarding the exhaust cam a tad & i'll just check the result by the seat of my pants but apart from that, i'll just keep saving money.

I wasnt sure if they were there for that purpose or if they had to be there because of being close to a water jacket or something. I didnt want to die grind straight into a water jacket & have big dramas. So has anyone here done that? (removed the lumps?) Any power improvement? Cheers, Shaun.

R31 GTS2 149rwkw RB30DE, VCT, mild cams, ported head, lightened & balanced bottom end, big extractors & full 3" exhaust, 12:1 compression, twin XF TB's, pod & CAI, twin thermos, spitfire coils, Link ECU. Cheers, Shaun.

To be fair, i should probably point out that even though i think theres more to be had from the cam setup i'm running, you definately know you have lumpy cams cos when you hit 4000rpm the whole engine changes note as the cams come on song. The VCT is switched at 4300 & the power just keeps building strongly til 6100. I just want it to be 7100 thats all.

I havent had it down the strip since the old motor which had a few bolt-ons to get it to 164rwhp & propelled it down the strip in 15.26 @ 91m/h. With the new donk at around 200rwhp i think it would pull close to a flat 14.00. My goal is to beat my friend Dean on the gold coast who has a 200rwhp RB30E powered R31 who has run a 13.89 AND also i want to beat Zoom magazines atmo V6 commy which pulled a 13.83! Deans skyline is the quickest atmo skyline in ausralia that i know of & zoom claims its V6 was the quickest atmo V6 in australia before they turboed it. (not counting a non-standard capacity V6 which had a 4.3L stroker kit). The new RB30DE is only just run in. It went in a local dyno comp straight after, & has done stuff all k's since then cos its my weekend car. The regrind cams that are in it are already 250-something degree items with 8.5mm lift so i'm looking to go to around 270 ones with 9.4mm lift & upgrade to turbo valve springs. Are there any other atmo skylines or VL's from this club pulling 200+rwhp or 13 second quarters? (I'm seldom on these forums as i usually visit R31skylineclub.com.) Are there any RB25DE owners with nice power figures? If so, what power did it peak at? ( I'm guessing probly 500-1000rpm higher due to shorter stroke). Also, is there any RB30DE owners here that have dynoed their car & found that ther power peaks higher than 6100rpm? I ask this because i think mine should be revving harder even with these mild cams. I talked to Surecam today & he thought power should peak higher than that even with stock cams but i ran these cams from the first time this donk was ever started so i dont know. Any info guys??? Heres another pic from when i was building up the twin cam setup, cheers, Shaun.

Hi guys, I've just fitted a set of SURECAM regrinds to my RB30DE which cost me around $400 incl. freight. At this stage i havent been on the dyno for the purpose of setting the vernier cam gears for maximum power but i can tell you that even though it makes good power, it only makes power till just over 6000 & then its all over by 6500. As a result, i'm thinking of going a bigger set of billet cams to get the thing really revving!!! My engine combo is: R33 head, RB30E block, Link ECU, full 3 inch exhaust, RB25DET injectors & oil pump, lightened crank & flywheel, balanced, cryogenically frozen rods & flywheel, hi octane clutch, extractors are bigger than the biggest you can buy off the shelf, twin XF throttles, 256 cams......... & the punchline: 12:1 compression. This setup pulled 199.7rwhp @ 6100rpm the other day at a dyno comp, taking the trophy for best atmo 6 cyl. I think it should be revving MUCH harder & cams are the only variable left at this stage so i guess i'll be ringing surecam again but for billets this time.