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Re: How loud is your valvetrain?
[Re: emarine01]
#670651
04/15/10 05:29 PM
04/15/10 05:29 PM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
Too Many Posts
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Too Many Posts
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
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I'd say mine is loud. and it's a hydraulic flat tappet...being the first engine I've built, I thought something was wrong, I expected the hydraulic to be quiet, but it sounds like a sewing maching running at full tilt under the hood.
someone said that it was normal and sounded fine. 4,000 miles later, they seem to have been correct!
**Photobucket sucks**
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Re: How loud is your valvetrain?
[Re: 70Cuda383]
#670652
04/15/10 07:24 PM
04/15/10 07:24 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
I'd say mine is loud. and it's a hydraulic flat tappet...being the first engine I've built, I thought something was wrong, I expected the hydraulic to be quiet, but it sounds like a sewing maching running at full tilt under the hood.
someone said that it was normal and sounded fine. 4,000 miles later, they seem to have been correct!
Sorry guys but hydralic cams should be quiet. If your valve train is noisey then I bet there's too much lash and it won't last long like that. There's should be zero valve lash when the motor is running and there is oil pressure when properly adjusted. That excludes Roades lifters or the rapid bleed down lifters.
Just saying... 
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Re: How loud is your valvetrain?
[Re: Dabee]
#670656
04/15/10 08:35 PM
04/15/10 08:35 PM
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Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
Leon441
master
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master
Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
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Trying to find power in my NA engine I ran some Royal Purple oil that was extremely light. The valvetrain was scary noisy. The car didn't run any faster either. I switched back to Valvoline 10-30 NFS racing oil and ran just as fast and a lot less noise.
Career best 8.02 @ 169 at 3050# and 10" tires small block power.
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Re: How loud is your valvetrain?
[Re: Challenger 1]
#670658
04/15/10 11:49 PM
04/15/10 11:49 PM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
Too Many Posts
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Too Many Posts
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
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Quote:
Quote:
I'd say mine is loud. and it's a hydraulic flat tappet...being the first engine I've built, I thought something was wrong, I expected the hydraulic to be quiet, but it sounds like a sewing maching running at full tilt under the hood.
someone said that it was normal and sounded fine. 4,000 miles later, they seem to have been correct!
Sorry guys but hydralic cams should be quiet. If your valve train is noisey then I bet there's too much lash and it won't last long like that. There's should be zero valve lash when the motor is running and there is oil pressure when properly adjusted. That excludes Roades lifters or the rapid bleed down lifters.
Just saying...
That's what I thought too, but I had a few folks with more experience than me, tell me that it sounded fine, and normal, that the higher lift and performance oriented cams would make more noise than stock cams, even if they are hydraulic cams. even the guys at the machine shop said it sounded fine, and we checked the "lash" on the lifters SEVERAL times after a bunch of runs to make sure they were staying put.
like I said, 4,000 miles later and no problems yet!
**Photobucket sucks**
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Re: How loud is your valvetrain?
[Re: 451Mopar]
#670659
04/16/10 09:31 AM
04/16/10 09:31 AM
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Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar
OP
master
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OP
master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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When I get back in town, I will have to get my wifes digital camera and do a quick video with sound to post. Monday, I did a video on my cell phone, but the sound quality is really bad, and when I tried to copy the file to my computer all i got was video, no audio?
The cam is a custom comp HXL 264/264 @ 0.050", (187@0.200"), 0.714"/0.714" lift, 112 LSA, 108 cl solid roller cam. Here is comps description of the lobe profiles:
"HXL SERIES ROLLERS
The HXL Series rollers are intended for high lift applications that require maximum torque and extended rpm. These
fall somewhere in between the RX and TK Series in terms of aggressiveness but provide more lobe lift. They are
closest to the High Torque .440" lobes but have incorporated our latest profile advancements that should allow
higher engine speeds and improved dynamics."
The heads are Max wedge port Edelbrock Victors.
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Re: How loud is your valvetrain?
[Re: 451Mopar]
#670662
04/16/10 03:03 PM
04/16/10 03:03 PM
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Joined: Jan 2003
Posts: 2,928
Canada
RobR
master
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master
Joined: Jan 2003
Posts: 2,928
Canada
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Quote:
When I get back in town, I will have to get my wifes digital camera and do a quick video with sound to post. Monday, I did a video on my cell phone, but the sound quality is really bad, and when I tried to copy the file to my computer all i got was video, no audio?
The cam is a custom comp HXL 264/264 @ 0.050", (187@0.200"), 0.714"/0.714" lift, 112 LSA, 108 cl solid roller cam. Here is comps description of the lobe profiles:
"HXL SERIES ROLLERS
The HXL Series rollers are intended for high lift applications that require maximum torque and extended rpm. These
fall somewhere in between the RX and TK Series in terms of aggressiveness but provide more lobe lift. They are
closest to the High Torque .440" lobes but have incorporated our latest profile advancements that should allow
higher engine speeds and improved dynamics."
The heads are Max wedge port Edelbrock Victors.
187@200 shouldn't be closing the valve hard enough for you to hear it. 
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Re: How loud is your valvetrain?
[Re: Dabee]
#670664
04/16/10 04:16 PM
04/16/10 04:16 PM
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Joined: Oct 2007
Posts: 4,209
New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,209
New York
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the aggressive ramps on the new hydraulic cam profiles make them loud
.......?
Rubbing 2 pieces of steel together in an oil bath does not make any noise you could hear in a running engine.
Cyclical noise (ticking, knocking) comes, entirely, from one thing striking another.
It could be rockers taking up end-play on the shaft and reversing, pushrod body smacking the head or block relief hole as it bends, hydraulic lifter compressing (and allowing slack above it) due to the speed and spring load too high for the oil pressure, there are probably others.
Boffin Emeritus
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Re: How loud is your valvetrain?
[Re: ahy]
#670669
04/16/10 08:39 PM
04/16/10 08:39 PM
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Joined: Dec 2004
Posts: 10,555
Rittman Ohio
fourgearsavoy
I Live Here
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I Live Here
Joined: Dec 2004
Posts: 10,555
Rittman Ohio
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I have a Comp XTQ series series FT unit with Isky iron rockers upgraded by RAS and it's pretty quiet  I have seen some engines with a hydraulic cam and adjustable rockers not adjusted tight enough Gus 
64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60
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Re: How loud is your valvetrain?
[Re: Viol8r]
#670670
04/16/10 11:38 PM
04/16/10 11:38 PM
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Joined: Nov 2003
Posts: 3,438
Dandridge TN
Dabee
master
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master
Joined: Nov 2003
Posts: 3,438
Dandridge TN
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Quote:
All aluminum top end here with a new lunati Hyd. cam and its fairly noisy in a 11:1 440. I started at 3/4 turn and now up to 1 1/2 turns on the crane golds and its a little quieter and runs perfect.
Most say its the combo of aluminum parts and aggressive cam....not worried about it.
Same here. Comp cam, Indy EZ heads and rockers. 1.5 turns on rockers and still noisy. Over the past year I've had the valve covers off to many times to count and find no problems. It runs great, 11.7 ET at 119 mph with full interior, PS, PB and AC.
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Re: How loud is your valvetrain?
[Re: Dabee]
#670671
04/16/10 11:56 PM
04/16/10 11:56 PM
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Joined: Aug 2003
Posts: 43,228
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,228
Bend,OR USA
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Quote:
Quote:
All aluminum top end here with a new lunati Hyd. cam and its fairly noisy in a 11:1 440. I started at 3/4 turn and now up to 1 1/2 turns on the crane golds and its a little quieter and runs perfect.
Most say its the combo of aluminum parts and aggressive cam....not worried about it.
Same here. Comp cam, Indy EZ heads and rockers. 1.5 turns on rockers and still noisy. Over the past year I've had the valve covers off to many times to count and find no problems. It runs great, 11.7 ET at 119 mph with full interior, PS, PB and AC.
If your adjusters are 3/8 by 24 thread (fine threads) one complete turn equals .042, 1.5 turns would be .063 travel which is probally to much preload  I adjust the rocker preload with the motor warmed up, water and oil at least 140F, and start with 1/2 turn from zero and then go try it, adjust tighter and looser and find out what the motor really likes  . Some of the motors, street Hemi and NHRA stockers, I have had like 1/4 turn warm or hot at the track
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: How loud is your valvetrain?
[Re: dvw]
#670672
04/17/10 12:28 AM
04/17/10 12:28 AM
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Joined: Oct 2007
Posts: 4,209
New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,209
New York
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You'd be surprised at how much noise a rocker makes when it whacks the stands on either side with even an extra .020" end-play. There are other things that make noise, and it may sound like it's coming from the top - like mechanical fuel pump eccentric, 1 bad link or tooth chip on the timing chain. Quite a few engines have been put together with valve covers too low, and a rocker bangs it - but only after you tighten the cover gasket a few times!  Yes, a hydro with the wrong pre-load will make noise also, and this is a function of oil pressure, viscosity, and tappet mfg.
Boffin Emeritus
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Re: How loud is your valvetrain?
[Re: Viol8r]
#670674
04/17/10 07:52 AM
04/17/10 07:52 AM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
All aluminum top end here with a new lunati Hyd. cam and its fairly noisy in a 11:1 440. I started at 3/4 turn and now up to 1 1/2 turns on the crane golds and its a little quieter and runs perfect.
Most say its the combo of aluminum parts and aggressive cam....not worried about it.
I don't understand all this talk about the "number of turns"?
On a hydralic cam the lash should be set when the motor is new and cold with the intake off. There's only a small area on the heal of the cam where there is no lift, that's when you set your pre load on the lifters. Each valve will be different and require different amount of "turns"
With the intake off you can see the plunger in the lifter go down, but you got to make sure your on the heal of the cam. Set it once and your done forever on a hydralic cam.
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Exhaust is way too loud 
@ 1:09
