Thinking of replacing cam, need thoughts...
Thinking of replacing cam, need thoughts... Check out my sig. I'm thinking of replacing the XER cam for a cam with less agressive lobes. The setup that looks good to me is the Vinci "The Beast" cam (really a Crane cam):
DUR @ .004" 290*/ 294*
DUR @ .050" 228*/ 232*
LIFT .551 / .551
OVERLAP 68*
LSA 112*
With a set of the Crane Gold-Race rockers at a 1.8 ratio.
My questions are:
1) Does anyone have this cam installed? How about the .600 lift version?
2) I don't race, but don't need "daily driver" driveability. Will this cam drive ok?
3) Do you think my 3.42 gears are too small for a cam of this size and RPM range?
Any other comments are welcome. Thanks!
DUR @ .004" 290*/ 294*
DUR @ .050" 228*/ 232*
LIFT .551 / .551
OVERLAP 68*
LSA 112*
With a set of the Crane Gold-Race rockers at a 1.8 ratio.
My questions are:
1) Does anyone have this cam installed? How about the .600 lift version?
2) I don't race, but don't need "daily driver" driveability. Will this cam drive ok?
3) Do you think my 3.42 gears are too small for a cam of this size and RPM range?
Any other comments are welcome. Thanks!
Originally Posted by PREDATOR-Z
So, let me get this straight. You want less agressive lobes and then you put 1.8 rockers on???
What is the dif??? did you think about that?
What is the dif??? did you think about that?
I have the Boss II in a box right now waiting to go in with the rockers, etc. Haven't installed it yet. I am looking for a good street cam with extra power for 6th gear highway cruising, not a 1/4 mile cam though.
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Joined: Mar 2004
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From: BFE
Originally Posted by Byter
The XER lobes are causing too much valvetrain noise. I'm not trying to decrease lift, I'm trying too decrease the ramp-up rate of the cam.
That 224/228 is one of the best Comp cams.
Originally Posted by PREDATOR-Z
Then just slap some 1.7 Crane rockers on. That will quiet them down a bit and you'll benefit from more power below the curve and a few more at peak.
That 224/228 is one of the best Comp cams.
That 224/228 is one of the best Comp cams.
I've experimented with everything else, now I'm ready to experiment with cam selection. For a moment, let's take the 1.8 rockers out of the equation.
1. Does anyone agree with me that the less aggressive Crane lobe will cut down on the noise?
2. Will going to a 228/232 with .551 lift, 112 LSA (110 ICL) affect the drivability and power range that much from the 224/228 with .581 lift, 114 LSA (113 ICL)? And yes, I know in theory that the bigger cam will push the powerband up the RPM range. I'm looking for real world experience in how much.
3. How will increasing the lift from .551 to .583 (for the 228/232, by using the 1.8 rockers) change powerband just for that cam?
Thanks!
Last edited by Byter; Sep 10, 2005 at 12:04 PM. Reason: added more to #2
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Joined: Jul 2005
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From: NJ
Originally Posted by Byter
The XER lobes are causing too much valvetrain noise. I'm not trying to decrease lift, I'm trying too decrease the ramp-up rate of the cam.
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Originally Posted by PREDATOR-Z
Then just slap some 1.7 Crane rockers on. That will quiet them down a bit and you'll benefit from more power below the curve and a few more at peak.
That 224/228 is one of the best Comp cams.
That 224/228 is one of the best Comp cams.
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Originally Posted by eamador11
That cam is going to rock the car bigtime! 112lsa is gonna be very aggressive....I had the GM hotcam in my 96, and that was only .525 lift.
Can anyone chime in? How about a cam close to this Crane?
One thing not mentioned in your signature is the springs you are running. I know the Comp 918's are good springs, but there is also discussion on the Crane site (each advertiser will obviously have their points they will try to get across) that the beehive design is noisier than a standard dual spring design. Any thoughts to going to the Crane springs as well as their rockers?
Originally Posted by vettenuts
One thing not mentioned in your signature is the springs you are running. I know the Comp 918's are good springs, but there is also discussion on the Crane site (each advertiser will obviously have their points they will try to get across) that the beehive design is noisier than a standard dual spring design. Any thoughts to going to the Crane springs as well as their rockers?
I know I keep coming up with questions, but here is a central one. Does the Crane cam mentioned above have a less-aggressive ramp up rate than the XER? It's hard to tell because Crane states their adv. duration numbers at .004 while Comp states theirs at .006.
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From: NE PA
Originally Posted by Spinmonster
I put the crane 1.8's on my stock cam and it was definitely much noisier. They don't quiet anything down. That's from experience.
However, if you have an already loud valvetrain with aftermarket cam and valve springs, the Crane roller rockers will quiet things down. That's from revelant experience.
Last edited by XTrooper; Sep 11, 2005 at 10:35 AM.
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From: NE PA
I believe that Crane cam, with its longer duration and tighter LSA, is a definite step up from your present cam, irrespective of the less aggressive lobes. Its less aggressive lobes could actually be considered a plus as they'll be easier on your valvetrain and quieter while at the same time the cam is providing more power.
11 Second Club
Joined: Nov 2001
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From: NE PA
Originally Posted by PREDATOR-Z
Then just slap some 1.7 Crane rockers on. That will quiet them down a bit and you'll benefit from more power below the curve and a few more at peak.
That 224/228 is one of the best Comp cams.
That 224/228 is one of the best Comp cams.
Originally Posted by XTrooper
I believe that Crane cam, with its longer duration and tighter LSA, is a definite step up from your present cam, irrespective of the less aggressive lobes. Its less aggressive lobes could actually be considered a plus as they'll be easier on your valvetrain and quieter while at the same time the cam is providing more power.
Originally Posted by XTrooper
This is another good option and one that would save you money and effort.
... TECH Senior Member
Joined: Mar 2004
Posts: 14,620
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From: BFE
The comment that 918's are noisier than duals is from my experience wrong (at least in my case).
When I put my PRC's with platinum duals, the valvetrain is noisier now than when I had my 918's. Preload is the same, .060
When I put my PRC's with platinum duals, the valvetrain is noisier now than when I had my 918's. Preload is the same, .060
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From: NE PA
Originally Posted by Byter
No way. There is no way I'm experimenting with another set of rockers. I've already tried 3 brands (including stock). I know there are benefits to the Crane rockers, but I'm only interested in them as part of the Crane cam package. I've been working on this problem for over a year. I strongly believe its the cam profile. I will go with a cam only experiment before going with another rocker/pushrod only experiment. ... But thanks for the suggestion ...
...I think you're on the right track with what you're considering.
I think once you stick a cam in a car.. that's it man, there's no avoiding the sewing machine niose, I'd suggest that you get used to it. If you wanna make power, you are gonna have noises like valvetrain stuff..... deal with it, or go back to stock.
Ever hear a solid roller motor, ever hear the noises that makes? The noise that you have now is nothing.. I'm running pretty much the same cam you are, that's not even loud trust me. It is normal... they all do it.
Ever hear a solid roller motor, ever hear the noises that makes? The noise that you have now is nothing.. I'm running pretty much the same cam you are, that's not even loud trust me. It is normal... they all do it.
Originally Posted by Spinmonster
I put the crane 1.8's on my stock cam and it was definitely much noisier. They don't quiet anything down. That's from experience.