Revolver Cams + Valvetrain Upgrade Finally Going In
Originally Posted by DSMBRETT
Did you put your stock cam gears back on Scott like I asked over a week ago? This seemed like a possible cause of your issues from day one and could have been ruled out straight away with a simple gear swap. The Revolver Cams do not need any head work to make power, or "magic tricks", but do require tuning with a good engine management system designed for the Evo VIII. It seems everyone that makes power with these cams has an Ecutek, AEM, Autronic, Techtom Flash, or Utec, and an experienced tuner doing the work.
Links below show what I am talking about:
https://www.evolutionm.net/forums/sh...light=revolver
https://www.evolutionm.net/forums/sh...light=revolver
Links below show what I am talking about:
https://www.evolutionm.net/forums/sh...light=revolver
https://www.evolutionm.net/forums/sh...light=revolver
Also, both of those cars have built motors, ported intakes, ported heads, larger throttle bodies, ported exhaust parts, etc. I think there may be something to the theory that these cams are not a good fit for a more stock combo. There are always trade-offs to large cams and in this case it appears that the disadvantages may outweigh the advantages unless you have a setup that really takes advantage of the airflow potential that these cams have.
untill some one can explain what is happening when he set the revolvers straight up, the whole issue is mute, done, dead.
I have a dog in this hunt,
revolvers are among my mods.
I have a dog in this hunt,
revolvers are among my mods.
Originally Posted by DSMBRETT
Did you put your stock cam gears back on Scott like I asked over a week ago? This seemed like a possible cause of your issues from day one and could have been ruled out straight away with a simple gear swap. The Revolver Cams do not need any head work to make power, or "magic tricks", but do require tuning with a good engine management system designed for the Evo VIII. It seems everyone that makes power with these cams has an Ecutek, AEM, Autronic, Techtom Flash, or Utec, and an experienced tuner doing the work.
Links below show what I am talking about:
https://www.evolutionm.net/forums/sh...light=revolver
https://www.evolutionm.net/forums/sh...light=revolver
Links below show what I am talking about:
https://www.evolutionm.net/forums/sh...light=revolver
https://www.evolutionm.net/forums/sh...light=revolver
Originally Posted by Pd1
Read the thread, Brett. Your questions and incorrect assumptions have already been addressed.
Originally Posted by DSMBRETT
So you did place your stock gears back on the car Scott and you still had the valvetrain noise? I didn't read where you did actually do that. Sorry for the mix up. Good luck with your car mate. Please feel free to contact me via phone/pm and I will see what can be done to get this situation rectified. Thanks.
To your bolded statement, I'll be happy to send you data logs detailing the exact airflow/fuel/timing/knock and whatever other data points you desire to prove that the car is not, and was not, in a poor state of tune. These have been sent to Ogvw, and he has said that this problem is not due to tuning.
I'm open to any suggestion/offer to rectify this situation. Shoot me a PM if you're serious and think you can fix this.
Scott, I am very sorry to hear that you have given up. I have felt frustration like that before. On the plus side I think that we have collectively eliminated a few variables in the difficult equation that is your vehicle.
Installation: I believe that Tuning Technologies has installed the cams correctly both times, they are helpful and honest when I have talked to them.
Camshaft Manufacturing: Despite how you worded it
they are exactly the same. TT measured them with vernier calipers and their measurements (when I spoke to them) were within 2 thousanths of an inch. As hopefully you know - digital calipers are not the standard by which we measure our cams. A digital caliper is a great quick measuring tool but rocking the caliper back and forth on the rounded nose of the cam will create more than a 2 thousanths (0.02) variance. Our test equipment however is VERY accurate, with our Campro Plus we can measure duration to 1/10th of a degree, and lift to 1 micron (0.00004 inches). I can assure you - the cams are ground to exacting tolerances using only the finest CNC cam grinding equipment. I will gladly re-measure them for you and post the results.
Unfortunately those 2 things are only part of your quest for more power. There are still many questions in my mind - all of which I have shared with you. The "mechanical clatter at 0/0 cam settings" being my biggest confusion. Many of our customers making big power chose NOT to run the adjustable gears AT ALL, David Buschur being one of them. So the fact that yours wont work at those settings is troubling. It creates many questions in my mind - Could it be an injector pulsewidth control issue at idle? Could it be spark knock at idle? Is the MAF signal at idle fluctuating (I have no idea how you came to the correction factor for the 2GDSMlink to Evo conversion)? What are the "actual" timing values? Again - I am not a tuner and I have never had any personal experience with the 2G DSMlink in an Evo but I have seen great results with reflashes, AEM, Autronic, Xede and Ecutek. All can be made to work well with our cams.
You have been patient and reasonable, I believe I have also. When I originally offered to help you I was offering to help you find the mechanical issue and/or see if the cams were manufactured correctly. The thing is, Revolver is a cam manufacturer - not a tuner, not an installer. I was letting my own personal curiosity and passion for making mechanical things fast get the best of me. I explained this to you during one of our phone conversations.
If the cams were found to be ground wrong then yes we would have refunded your purchase. We have a 1 year warranty against manufacturing defects - no questions asked. Customer service is important to us and we will go that extra mile. However we do not gaurantee a particular level of performance. Our customers have proved independantly that our cams make power, torque and are a fantastic value. I like to think of it this way:
You are a Chef (customer) browsing the supermarket (Evo performance aftermarket) for ingredients to make your dish (power). I am your Butcher. You buy a filet of beef from me, I know the beef (camshafts in this case) to be of the highest quality that I can deliver to you. Now you go home tt make your dish. You are in control of the recipe. If the dish doesnt taste the way you intended, its not the butchers fault.
We will continue to support and offer advice as to your (and all other customers) recipe. Dont give up - I am sure you can find your issue.
Installation: I believe that Tuning Technologies has installed the cams correctly both times, they are helpful and honest when I have talked to them.
Camshaft Manufacturing: Despite how you worded it
Originally Posted by Pd1
They seemed "okay" and measured out similarly, though not exactly, when compared to the "known good" set sent in by Ogvw.
Unfortunately those 2 things are only part of your quest for more power. There are still many questions in my mind - all of which I have shared with you. The "mechanical clatter at 0/0 cam settings" being my biggest confusion. Many of our customers making big power chose NOT to run the adjustable gears AT ALL, David Buschur being one of them. So the fact that yours wont work at those settings is troubling. It creates many questions in my mind - Could it be an injector pulsewidth control issue at idle? Could it be spark knock at idle? Is the MAF signal at idle fluctuating (I have no idea how you came to the correction factor for the 2GDSMlink to Evo conversion)? What are the "actual" timing values? Again - I am not a tuner and I have never had any personal experience with the 2G DSMlink in an Evo but I have seen great results with reflashes, AEM, Autronic, Xede and Ecutek. All can be made to work well with our cams.
Originally Posted by Pd1
As for me, I'm done with these cams unless Ogvw wants to personally figure out how they can make power on my car. Given that this was an option early on that was later rescinded, I'm not going to hold my breath on it. At this point, I have my fingers crossed that Ogvw will return the money I've paid for these cams, as well as do whatever he had in mind to "make it right" if I ended up not using them and out-of-pocket in terms of installation expenses. I've been patient, reasonable, open to suggestions, and genuinely dedicated to figuring out how to get these to work; however, it now seems impossible. I don't believe anyone could disagree on these facts.
If the cams were found to be ground wrong then yes we would have refunded your purchase. We have a 1 year warranty against manufacturing defects - no questions asked. Customer service is important to us and we will go that extra mile. However we do not gaurantee a particular level of performance. Our customers have proved independantly that our cams make power, torque and are a fantastic value. I like to think of it this way:
You are a Chef (customer) browsing the supermarket (Evo performance aftermarket) for ingredients to make your dish (power). I am your Butcher. You buy a filet of beef from me, I know the beef (camshafts in this case) to be of the highest quality that I can deliver to you. Now you go home tt make your dish. You are in control of the recipe. If the dish doesnt taste the way you intended, its not the butchers fault.
We will continue to support and offer advice as to your (and all other customers) recipe. Dont give up - I am sure you can find your issue.
Sounds like you are not the first person to not like the Revolver Cams
https://www.evolutionm.net/forums/sh...=revolver+cams
https://www.evolutionm.net/forums/sh...=revolver+cams
Originally Posted by 05-EVO-GSR
Sounds like you are not the first person to not like the Revolver Cams
https://www.evolutionm.net/forums/sh...=revolver+cams
https://www.evolutionm.net/forums/sh...=revolver+cams
Did you actually read the post you just linked ?? I am guessing not. Looks like you read the title ........
Tune aside, the noise in the valvetrain should be the concern at 0/0. There is obviously some other issue going on. I think we cam rule out the cams all together since there are a lot of sets out there with none of these issues.
I gained 30 ft lbs of torque before retuning with these cams. No gears.
Then again I had someone who knew what they were doing install them. Me
Seriously though, regardless of what cams are put in the car I think you have another issue that is only being amplified by the higher lift cams.
I gained 30 ft lbs of torque before retuning with these cams. No gears.
Then again I had someone who knew what they were doing install them. Me

Seriously though, regardless of what cams are put in the car I think you have another issue that is only being amplified by the higher lift cams.
Ogvw,
I must now admit that this has turned into a poor customer service experience with you, and I will no longer endorse anyone purchasing from your company. This decision is based on the fact that you have gone back on your word in several instances during this ordeal. Putting good cams/bad cams aside, your word is your bond and it's what sets you apart from less honorable competition. Allow me to predict that this will severely harm your business.
As you recall, you offered to fix this problem first-hand (and I was even offering to drive my car up to the bay area...5hrs... to give you the opportunity to do so) and somewhere along the way you decided it wasn't your job to go above and beyond to address this issue personally.
Secondly, during these same conversations, you assured me that "no matter what, your car will make power when I'm done with it." I said at this point that if you couldn't figure out how to make power with the Revolvers, that I wanted to you substitute a set of 272's. What was your reply? A chuckle, followed by "Sure. No problem."
Now, with reference to money, you plainly told me that if I was not "happy" with your cams, that you would "make it right" with me. When I asked what this meant, you said that I would be refunded my purchase price as a start, and then we would work something out regarding the labor I've been paying for through TT.
Your butcher analogy is missing once critical piece -- the butcher guaranteed satisfaction with his beef. Now that the cams are "revolving" their way out of my car, the butcher doesn't feel the need to keep his word.
I must now admit that this has turned into a poor customer service experience with you, and I will no longer endorse anyone purchasing from your company. This decision is based on the fact that you have gone back on your word in several instances during this ordeal. Putting good cams/bad cams aside, your word is your bond and it's what sets you apart from less honorable competition. Allow me to predict that this will severely harm your business.
As you recall, you offered to fix this problem first-hand (and I was even offering to drive my car up to the bay area...5hrs... to give you the opportunity to do so) and somewhere along the way you decided it wasn't your job to go above and beyond to address this issue personally.
Secondly, during these same conversations, you assured me that "no matter what, your car will make power when I'm done with it." I said at this point that if you couldn't figure out how to make power with the Revolvers, that I wanted to you substitute a set of 272's. What was your reply? A chuckle, followed by "Sure. No problem."
Now, with reference to money, you plainly told me that if I was not "happy" with your cams, that you would "make it right" with me. When I asked what this meant, you said that I would be refunded my purchase price as a start, and then we would work something out regarding the labor I've been paying for through TT.
Your butcher analogy is missing once critical piece -- the butcher guaranteed satisfaction with his beef. Now that the cams are "revolving" their way out of my car, the butcher doesn't feel the need to keep his word.
Originally Posted by dsevo
I am sure you have already read it, but in another thread about problems with these cams, a guy said he had 7 lifters collapse with the install of these cams. After he replaced the lifters, everything was fine. If you haven't seen the thread the link is:
https://www.evolutionm.net/forums/sh...light=revolver
The post is the very last one. I think I will go ahaead and have new lifters put in at the same time I have my cams installed.
https://www.evolutionm.net/forums/sh...light=revolver
The post is the very last one. I think I will go ahaead and have new lifters put in at the same time I have my cams installed.
Why TT did not bleed them is beyond me. Service manual talks about it, I guess an extra 15 minutes of time is not worth it.
Originally Posted by jbfoco
05-evo-gsr,
Did you actually read the post you just linked ?? I am guessing not. Looks like you read the title ........
Did you actually read the post you just linked ?? I am guessing not. Looks like you read the title ........

Here is the post:
Originally Posted by DVC2004
Im Sorry I take that back REVOLVER CAMS arn't CRAP they are just plain GARBAGE.
If you have Stock Turbo set up
I recently purchased a set of cams through a local supplier and was told many great things about these cams. Well guess what? everthing said about these cams are completely false and untrue. Though I plan on upgrading the turbo in the near future these cams run like crap on the stock Turbo.
Here are my list of complaints
#1. These cams are NOISY, dont get me wrong I dont give a $hit how loud the car is but when your valvetrain is so noisy the ECU thinks its KNOCK then you got yourself a problem. Not only with tunning but with overall performance. Cams are noisy because of the way they are designed due to the lift.
#2. These cams made less HP on a tuned map than stock cams make on a base map. EVO8
#3. These cams have no idle whatsoever.
#4. Car dies at idle sometimes and REVOLVER KNOWS THIS thats the reason for the odd 6-2 settings on the cam gears
#5. Car base line run was 252.3WHP with just cat back exhaust and intake.
Now We have DownPipe.Test pipe.exhaust.intake.cams.fuel pump.cam gears. and only 238 WHP tuned and absolutely no IDLE whats so ever.
#6. You must purchase cam gears just to get an OK idle and even then the car still dies and doesnt idle worth a $hit.
#7. Loss of Tourqe all throughout the powerband. Car feels like a honda now (B16)
#8. The Dyno Graph of the REVOLVER CAMS on this forum does not tell the whole truth about these cams and I want everyone to know about my experience with these cams before purchase is made.
The Dyno plot from the actual owners (revolver) EVO doesnt say anything about how much boost he was running. He is pushing 30 pounds of boost to make 300 pound feet torque but he was also on race gas (100 oct).
By the way it is all about peak numbers, Dont tell me different.
#9. I am sorry I purchased these cams there is nothing possitive to say about these cams and this purchase. I spent alot of money just to loose HP.
If you have Stock Turbo set up
I recently purchased a set of cams through a local supplier and was told many great things about these cams. Well guess what? everthing said about these cams are completely false and untrue. Though I plan on upgrading the turbo in the near future these cams run like crap on the stock Turbo.
Here are my list of complaints
#1. These cams are NOISY, dont get me wrong I dont give a $hit how loud the car is but when your valvetrain is so noisy the ECU thinks its KNOCK then you got yourself a problem. Not only with tunning but with overall performance. Cams are noisy because of the way they are designed due to the lift.
#2. These cams made less HP on a tuned map than stock cams make on a base map. EVO8
#3. These cams have no idle whatsoever.
#4. Car dies at idle sometimes and REVOLVER KNOWS THIS thats the reason for the odd 6-2 settings on the cam gears
#5. Car base line run was 252.3WHP with just cat back exhaust and intake.
Now We have DownPipe.Test pipe.exhaust.intake.cams.fuel pump.cam gears. and only 238 WHP tuned and absolutely no IDLE whats so ever.
#6. You must purchase cam gears just to get an OK idle and even then the car still dies and doesnt idle worth a $hit.
#7. Loss of Tourqe all throughout the powerband. Car feels like a honda now (B16)
#8. The Dyno Graph of the REVOLVER CAMS on this forum does not tell the whole truth about these cams and I want everyone to know about my experience with these cams before purchase is made.
The Dyno plot from the actual owners (revolver) EVO doesnt say anything about how much boost he was running. He is pushing 30 pounds of boost to make 300 pound feet torque but he was also on race gas (100 oct).
By the way it is all about peak numbers, Dont tell me different.
#9. I am sorry I purchased these cams there is nothing possitive to say about these cams and this purchase. I spent alot of money just to loose HP.






