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Are Comp XE Cam profiles noisy? #1299503 09/07/12 09:51 PM 09/07/12 09:51 PM
Joined: Jun 2005 Posts: 103 Peyton, Colorado F furyous3 OP member
furyous3 OP member F Joined: Jun 2005 Posts: 103 Peyton, Colorado	Put a Comp XE275 cam in my 496 stroker and at idle it is smooth and fairly quiet. but at rpm around 2500 on up the lifters begin a light clatter. It is kind of annoying but does not appear to be getting worse, just steady. I also have beehive springs. Is this lifter noise typical of the XE cam series?

Re: Are Comp XE Cam profiles noisy? [Re: furyous3] #1299504 09/07/12 09:57 PM 09/07/12 09:57 PM
Joined: Jan 2003 Posts: 16,123 Grand Haven, MI patrick I Live Here
patrick I Live Here Joined: Jan 2003 Posts: 16,123 Grand Haven, MI	my old 360 I put an XE262 was the opposite-- a little clackity at idle, but quiet at RPM. 1976 Spinnaker White Plymouth Duster, /6 A833OD 1986 Silver/Twilight Blue Chrysler 5th Ave HotRod SOLD!* 2011 Toxic Orange Dodge Charger R/T 2017 Grand Cherokee Overland 2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)

Re: Are Comp XE Cam profiles noisy? [Re: patrick] #1299505 09/07/12 10:03 PM 09/07/12 10:03 PM
Joined: Aug 2007 Posts: 126 Long Island, NY M mjb765 member
mjb765 member M Joined: Aug 2007 Posts: 126 Long Island, NY	My XE274 is a little noisey at idle, but better at higher RPM.

Re: Are Comp XE Cam profiles noisy? [Re: mjb765] #1299506 09/07/12 10:09 PM 09/07/12 10:09 PM
Joined: Jun 2005 Posts: 103 Peyton, Colorado F furyous3 OP member
furyous3 OP member F Joined: Jun 2005 Posts: 103 Peyton, Colorado	Hmmmmm, I put a half turn on the rocker adjusters. Would another quarter turn help?

Re: Are Comp XE Cam profiles noisy? [Re: furyous3] #1299507 09/07/12 10:16 PM 09/07/12 10:16 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	Quote: Would another quarter turn help? I would try it but I'd go back if it made no difference live every 24 hour block of time like it's your last day on earth

Re: Are Comp XE Cam profiles noisy? [Re: furyous3] #1299508 09/07/12 10:24 PM 09/07/12 10:24 PM
Joined: Sep 2004 Posts: 22,873 Chicken coop dustergirl340 Chicken Little
dustergirl340 Chicken Little Joined: Sep 2004 Posts: 22,873 Chicken coop	My Dart's XE274 has always been noisy, been in the car for 8 years now. Hasn't seemed to hurt anything. If anything I get a lot of compliments on how good it sounds...?

Re: Are Comp XE Cam profiles noisy? [Re: dustergirl340] #1299509 09/07/12 10:41 PM 09/07/12 10:41 PM
Joined: Aug 2005 Posts: 4,799 ILL M MLR426 master
MLR426 master M Joined: Aug 2005 Posts: 4,799 ILL	XE profiles have aggressive lobe ramps and noise is common at idle and most are noisey no matter what rpm. What are your installed spring pressures open and closed ? With the 496 stroker why was a XE profile selected ? Was it cost versus a tight lash roller combo ? And no another 1/4 turn will not change anything with the lifter noise, it's all about valve train control with pressures and heavy valve trains like 3/8 heavy stem valves etc..cause control issues with aggressive cam profiles especially at higher rpm's. MLR426 Last edited by MLR426; 09/07/12 10:47 PM.

Re: Are Comp XE Cam profiles noisy? [Re: MLR426] #1299510 09/07/12 10:59 PM 09/07/12 10:59 PM
Joined: Jan 2003 Posts: 75,005 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,005 U.S.S.A.	Yes they are noisy , precious setting of the preload seems to work on the one I did earlier this year. If I had to do it over again I would have just used a solid . I don't think it's noisy lifter , especially since they are under preload pressure always, it more the valves slamming closed ??? The one I did also didn't use Comp lifters , first time around yes and that one started to lose a lobe , or it was just really noisy with the comp lifters that it sounded like something real bad was happening , anyway a custom Grind from Dwayne porter , maybe it didn't have as aggressive a ramp as the XE , and a set of Crower Cam saver lifters along with the time I spent setting prelaod , it was hardly noticeable last time I had my head under the hood of the car it was installed in .

Re: Are Comp XE Cam profiles noisy? [Re: JohnRR] #1299511 09/07/12 11:06 PM 09/07/12 11:06 PM
Joined: Jan 2003 Posts: 9,875 Weddington, N.C. Streetwize master
Streetwize master Joined: Jan 2003 Posts: 9,875 Weddington, N.C.	They are a bit 'clackity' in Mopars. My best guess as to why is that they are essentially a 'scaled up' .904 based on profiles obviously designed for the much more popular SBC which has Much Lighter valvetrain mass. Weigh the valves, lifters, pushrods, springs and retainers side by side and it's pretty easy to figure out where the clatter from the faster ramps is coming from. Last edited by Streetwize; 09/07/12 11:09 PM. WIZE World's Quickest Diahatsu Rocky (??) 414" Stroker Small block Mopar Powered. 10.84 @ 123...and gettin' quicker! https://www.youtube.com/watch?v=-mWzLma3YGI In Car: https://www.youtube.com/watch?v=PjXcf95e6v0

Re: Are Comp XE Cam profiles noisy? [Re: furyous3] #1299512 09/09/12 01:25 AM 09/09/12 01:25 AM
Joined: Jan 2003 Posts: 6,816 Alton, IL D Dakota_Don master
Dakota_Don master D Joined: Jan 2003 Posts: 6,816 Alton, IL	mines a bit clackety at idle

Re: Are Comp XE Cam profiles noisy? [Re: Dakota_Don] #1299513 09/09/12 03:11 PM 09/09/12 03:11 PM
Joined: Oct 2003 Posts: 21,345 Marysville, O-H-I-O 70Cuda383 Too Many Posts
70Cuda383 Too Many Posts Joined: Oct 2003 Posts: 21,345 Marysville, O-H-I-O	My XE-275-HL was like a sewing machine at idle, but didn't hear any noise over the exhaust at RPM Photobucket sucks

Re: Are Comp XE Cam profiles noisy? [Re: 70Cuda383] #1299514 09/09/12 05:38 PM 09/09/12 05:38 PM
Joined: Dec 2008 Posts: 2,782 USA J JoesMopar master
JoesMopar master J Joined: Dec 2008 Posts: 2,782 USA	The XE268 in my 383 is noisy when it gets warmed up. Stock rocker set up.

Re: Are Comp XE Cam profiles noisy? [Re: JoesMopar] #1299515 09/09/12 06:50 PM 09/09/12 06:50 PM
Joined: Feb 2004 Posts: 7,196 Harrisburg, Pa. screamindriver master
screamindriver master Joined: Feb 2004 Posts: 7,196 Harrisburg, Pa.	I've measured and remeasured everything up top on the last 440 build with the XE cam and it still has a touch of valvetrain noise at hot idle...

Re: Are Comp XE Cam profiles noisy? [Re: screamindriver] #1299516 09/09/12 07:26 PM 09/09/12 07:26 PM
Joined: Oct 2005 Posts: 6,048 Back home in PA B BulletBob master
BulletBob master B Joined: Oct 2005 Posts: 6,048 Back home in PA	Quote: I've measured and remeasured everything up top on the last 440 build with the XE cam and it still has a touch of valvetrain noise at hot idle... I did the same on a XE268H in a 360 that was in my old dually a little clatter at hot idle too

Re: Are Comp XE Cam profiles noisy? [Re: screamindriver] #1299517 09/09/12 07:28 PM 09/09/12 07:28 PM
Joined: Jan 2003 Posts: 4,588 St. John's Newfoundland 440newport master
440newport master Joined: Jan 2003 Posts: 4,588 St. John's Newfoundland	The XE268 in my 360 is fairly quiet actually. You can hear a very slight clacking with the hood open but it's barely noticeable and not annoying at all. I did have the pre-load checked and corrected on that motor though. The fast-ramp Lunati Voodoo in my 400 however, sounds like a broken sewing machine and I hate it.

Re: Are Comp XE Cam profiles noisy? [Re: 440newport] #1299518 09/09/12 10:39 PM 09/09/12 10:39 PM
Joined: Jun 2005 Posts: 103 Peyton, Colorado F furyous3 OP member
furyous3 OP member F Joined: Jun 2005 Posts: 103 Peyton, Colorado	I spoke with the builder and he put @.20 (1/2 turn) on it. We used beehive springs, don't know the seat and nose pressure. I drove it all over town yesterday and on the freeway with no concerns about performance but at freeway speeds the lifter noise is kinda buzzy. At idle it seems quiet and fine, So I'll just get used to it or maybe put some cast valve covers on it to absord the noise. Thanks for the responses.

Re: Are Comp XE Cam profiles noisy? [Re: furyous3] #1299519 09/10/12 02:33 AM 09/10/12 02:33 AM
Joined: Feb 2004 Posts: 4,501 Gainesville,FL G goldmember master
goldmember master G Joined: Feb 2004 Posts: 4,501 Gainesville,FL	The Xe line has always had that issue,I've seen it since they were released. The good news is you can have your cake and eat it to.If you want noise issues why not just put a solid in it,but that may be quieter and make more power everywhere.

Re: Are Comp XE Cam profiles noisy? [Re: goldmember] #1299520 09/10/12 09:30 AM 09/10/12 09:30 AM
Joined: Aug 2005 Posts: 4,799 ILL M MLR426 master
MLR426 master M Joined: Aug 2005 Posts: 4,799 ILL	Quote: The Xe line has always had that issue,I've seen it since they were released. The good news is you can have your cake and eat it to.If you want noise issues why not just put a solid in it,but that may be quieter and make more power everywhere. Yes a solid would have been a better choice and it would make more power. I would have a tight lash solid cam ground. Goldmember you need to enlarge that sig PIC My favorite.. MLR426 Last edited by MLR426; 09/10/12 09:31 AM.

Re: Are Comp XE Cam profiles noisy? [Re: furyous3] #1299521 09/10/12 09:35 AM 09/10/12 09:35 AM
Joined: Jan 2003 Posts: 75,005 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,005 U.S.S.A.	Quote: I spoke with the builder and he put @.20 (1/2 turn) on it. We used beehive springs, don't know the seat and nose pressure. I drove it all over town yesterday and on the freeway with no concerns about performance but at freeway speeds the lifter noise is kinda buzzy. At idle it seems quiet and fine, So I'll just get used to it or maybe put some cast valve covers on it to absord the noise. Thanks for the responses. I'm going to ASSuME that is a TYPO , a 1/2 turn wouldn't be .20, maybe .020 ....

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