Wich turbo are you using?????????
Depending on the turbo this could be very good numbers since still you are running stock ecu/maf and since these are very aggressive cams you dont see their full potential unless running a big turbo(GT35R or bigger) and on a fully built engine/head .

Im looking to get one set of Revolver cams for my Evo 8 Gt35R set up(or GT35R HTA if they ever produce it) and gonna use Brian Crower valve springs and titanium retainers since the specs are nearly the same as the ones advertised for the Revolver spring and retainers

 

It was all done on stock evo8 turbo with 10.5 upgrade ported and ported exhaust manifold....


I'm in the prossess of picking up a new setup useing a 3076r setup....
Stock ecu and I will run full bor on 100oct+100%meth shooting for 500hp

 

375hp and 380 tq on a evo 8 turbo and 93oct its really good! those cams are really working good but you will not see their full potential untill you upgrade to a bigger turbo and port the head

 

Do u think a 3076r will get the cams going real good??

 

Well ,they will shine a little more with the 3076 than with the stock turbo but to unleash his full potential you will need something in the lines of a GT35R or bigger,remember that these are some aggressive cams designed for aggressive setups

 

can i ask a real dumb question??

revolver made a cam 262/264 with 11.6 lift or some crap. what if they made a 272/272 with that lift?????? what would that do??

 

The advertised duration doesn't mean a whole lot. The Revolver 262/4s have a similar effective duration to HKS 280s.

On the subject of revolvers, I went and traded my 280s for a set, and have been unable to make power with them. Might as well ramble a bit. I don't believe the problem with some sets working and others not is in the cams themselves. I believe it's in the setups they are installed on. Part of the reason is that every time someone gets a set of revolvers tested out, they check out. I've yet to see or hear about one being out of spec. Armed with this belief, I'm in the process of trying to get these things to work. I get so much more midrange and even low end power, driveability is fantastic. I love these cams. If I can just figure out why the top end goes flat I'll be one happy camper.

All that being said, here are some of my observations. I have passed this all on to revolver too, but got no reply. They were pretty good with communication/response up until a few months ago...

HKS 272s and 280s: (data is similar between the two so I'm not going to separate it)

32 psi boost peak at 6k rpm or so where it drops after a shift, tapering to 26-27 psi. Cam gears straight up. Car traps 121.x mph. Car is laggy as hell (relatively speaking) and sucks off idle.

Revolvers:

Installed straight up boost peaks at the same 32 psi but holds 32 psi to redline (WTF!). With the intake cam retarded 2 degrees boost drops to 30 psi. At -4/0 boost drops to 29.x psi. As boost drops, trap speed goes up, which should come as no surprise. I installed the stock cam gears to rule out a bad set of adjustable gears, performance was the same as the adjustable gears at 0/0. Car traps 117ish. Low end/off idle performance is fantastic, car is much easier to drive at slow speeds. Boost threshold doesn't change, though lag seems to be drastically reduced. Regardless of cam gear settings, partial spool boost vs RPM is dramatically better than the HKS cams.

Fast forward to a couple weeks ago. Back on the revolvers, and back on the adjustable cam gears. Retarded both gears this time to -2. Boost drops to very low 29s and the car goes over 120 mph. Finally approaching the HKS numbers, but still a bit soft. Oddly enough, 4th gear knock is noticeably improved, even after the car suddenly allows another 5-8 degrees of timing advance, which is huge. Take the intake cam to -4, no significant improvement.

In the name of science, I'm continuing to change my setup to try to find the missing link. Since all of the cars buschur puts the Revolvers in do well, and most of those cars are running all buschur parts, I started swapping over. I've now converted to a BR O2 housing, v-band turbo back, FMIC/LICP. I've yet to test with the FMIC, that happens tomorrow weather permitting. The race core performs incredibly well, as far as temps go. We'll see if this affects the high 4th gear temps I was seeing, presumably due to the extra 4+ psi the cams are holding (with no airflow benefit), which caused 4-5 degree of timing to pulled throughout 4th gear, which kills trap speed naturally.

I think the next step is to test the ported vs non ported head theory, despite the fact that some people have done well with Revolvers on stock heads. Porting it myself as I've done in the past would be cheap enough to make this doable, but would diverge somewhat from the intentions of the testing. To keep it true, it should get a BR head, but I'm getting tired of dumping money into this pig. And of course the Green needs to get rebuilt or replaced, which kills my motivation.

Another area that showed some promise is injector timing. I was able to find significant improvements in throttle response and AFR, and the car ran it's best revolver trap speed after these changes. To get it any better I need to know the valve event timing. Revolver has not responded of course. If anyone has this info, or if it can be calculated from the information that is available (cam doctor results?) that would be helpful.

So in the end, the problem is top end only. The boost is too high at redline, which means airflow has gone DOWN since the turbo is flat lined at max airflow at this point and boost is the variable. Retarding the cams both drops boost and helps traps, but I'm not sure how far I want to go. I expect the problem to be something with my car, or with my setup. If anyone has done similar testing or found particular parts/settings that make revolvers work, please, pass the info along.

 

so what is the best cam setting for the revolvers?? for drag and highway pulls????

 

I'm with you bro .. my 272's make more than 20hp from 5500rpms onwards vs the revolvers .. but the midrange torque of the revolvers from 4-5000 are like 20ftlbs difference .. phasing the cams only made the midrange noticeably worse with no substantial gains in the top ..

I also appreciate if the cam info can be released ..

 

There are several cars making great #s on these cams, and many who get the flat top end. I used to think it was just that some tuners didn't know how to tune these cams due to their departure from the norm, but I have since found that to be untrue. A tuner can make awesome numbers on one car and have the next be a complete mystery as to why it won't make any power up top (even cars that have almost exactly the same parts on them).

Unfortunately my last car was in the latter category. I got so frustrated trying to solve the Revolver Riddle that I gave up and got a new car and started from scratch.

EVOlutionary

 

Advertised duration is 262/264 BUT effective duration which is the "true" numbers is 222/223 and if my memory is right those are the same or a bit higher than the HKS 280´s

 

There must be some sort of trick or some magic words that has to be spoken that only Buschur knows cause hes the only one that has got very good luck with these cams, why dont ask him????

And you dont gonna have any response from them they have vanished in to the air

kjewer1 did you tried to advance the ex cam just to try??? or trying to retard a bit of timing on the upper rpms????

 

I did ask Dave what he thought. He said that they always just work for him, straight up.

Advancing the exhaust cam sounds like it would only make the problem worse. Especially after verifying that retarded it 2 degrees has made the most dramatic improvement yet, especially with knock.

I can understand how certain things may hold these relatively large cams from seeing their full potential, but I can't see how these more aggressive cams can actually reduce airflow over HKSs. I'm curious now if the cars making big power on the Green/Revolvers are holding 26 psi or 30 psi at redline.

 

Advancing the exhaust cam isn't going to solve anything if you're looking for the best trap speeds.

So long as retarding both cams makes an improvement, keep doing it. When you determine the point of diminishing returns, advance the exhaust cam 1 degree at a time until you get no further improvement. When you reach that point, you are set.

Injector timing is something that is rarely discussed, but obviously, changing cam timing changes injector timing.

 

Ted what's up. We meet again. As you can see I got the revolver cams installed and running well on stock ecu... my cam gears are set 0exhaust -2 intake.... I'm going for a custom tune with a bigger turbo in august. What I'm looking for is the best cam setting for drag race and highway pulls... what do you think cam gear setting wize I should try to start with and what direction do I go in to make the best of what I'm looking for... thanks and good to talk to u gaian and be safe