Thread: Safe max rev on SRXXVE cams

i was not on stock springs. I was on supertech 130 lb springs and titanium retainers. lol. No chance in hell i would have revved stock springs to 10k plus.

This chart is the perfect example. At 8900 rpm the car was still making 185whp. So say you shifted at 9k and you have a 2k rpm drop during the shift and thats being generous as its usually slightly more. That would have put the car back at say 7k where it was still making about 190whp.

Now say you shifted the car at 8k which is 200 rpm after it peaked in power, car would have fell to 6k during the shift where it was making barely 155whp or so.

See what i mean? By shifting at 9k you just gave yourself a much higher overall average whp at any given time which will in turn = faster acceleration no questions asked.

on that dyno, graph you would best to change at around 7200rpm, as that is where the torque start to drop off. and it bring you back onto the ramp of torque, as we all know torque wins the race no hp. it is nearly the same time as peak hp is also made. beyond that it just flucuates

lol @ 7200rpm shift.
if torque wins races, diesels would be king of the track.

i'd shift about 8500rpm, with good ratio's you'd land back at 6500-7000rpm and have a nice rev range to race with.

Again no point to argue. Torque does not win races.

And yes gearing can play a roll, it all depends on what rpm the shift drops to is where you would want to shift. Im saying right now that on normal ratio trans with a 2k rpm drop, right at 8900-9k would be the optimum shift point.

Perhaps on the KA24DE.. I take even my SR20DE with bolt-ons to 7800rpm at the track..

8500ish going to 9k would be a waste of time.

I could rmember those B series way back where they put Hondata no rev limit chip on stock springs LOL and kaboom

good thing the SR can withstand more , im sure gonna put some SPtechs when i have extra money



i think ashton is right,and i think the gearing ratio affects what rpm it would drop...

That dyno is old I think 2007 maybe or 06 can't remember. It was done with a Calum RT ecu. Once you try and set the limiter over 8200 you have no revlimiter.

Ashston, I respect you for the Turbo game but I think you are exaggerating about the N1 cam NA rpm capability.

Most motor with N1 normally peak power around 7500 rpm and nose dive right after that. Only motors with custom intake manifold and header peak above 8,000. Maybe one or two VE are able to hold peak power to 9,000 and they are not running N1. All you have to do is look at the VE dyno database on the old sr20forum.

BlueRb240 and I are speaking from experience testing cams and intake manifolds. BlueRB240 has help set up 5 dyno days where we have seen 12 VE equipped cars dynoed and none of them ever peak above 8,000 rpm with just N1 cams.

If you still insist your friend motor made power all the way to 9,000 rpm, please provide a dyno chart and BlueRB240 in return can provide more dyno charts since he has access to this particular dyno jet.