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Author
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Topic: Compcams Hyd Lifter Question
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MidLifCrisis
Gearhead Posts: 508
From: Frederick County, MD
Registered: Oct 2001
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posted 07-08-2003 11:54 PM
   
Most of you racers go solid, but there may be someone that can help me (like Alex) I have an XE262H Comp cam and Compcams lifters. The lifters are noisy. At cruising speed they quiet down, but tick when hot and putting around parking lots or up hill at minimum pedal. I mentioned this to the mechanic and he said that this was normal. He claims that the Compcams lifters have larger bleed holes to maintain vacuum, and don't pump up and quiet down until higher rpm is reached. Is this fact or Bull? He said that switching to Melling lifters would quiet it down since that is what the OEM's use, but suggested trying 20-50W to keep things quiet. Motor has only 1200 miles on it and I am using 10-30w. Isn't 20-50W a little much for a tight new street motor? Any guidance is appreciated. Thanks, Charlie
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bluestreek
Gearhead Posts: 1724
From: Athens,GA
Registered: Jul 2001
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posted 07-09-2003 12:08 AM
This may or may not be true, but I was having a camshaft concertation with my engine machinist the other day and he was telling me that a lot of people were complaining about how noisy the new Xtreme Energy cams were. He is starting to hate them. We decided that it is caused from the extreme radical ramps that are ground into the lobes. I guess they put more stress on a hydro lifter than a normal lobe.Anyway, just thought I would share that.  ------------------
1966 Mustang Coupe: Custom glass hood and BIG scoop sits atop a 289 stroked to 331 c.i., Steel crank and girdle, 5.4 H-beams, Forged slugs, TFS alum. heads, ported Stealth 8020 intake, Xtreme 274 Solid Roller, Holley 750 HP, long tubes, 4speed, 9" 3.50 posi.
11.86 @ 116 mph (7.62 @ 93 mph)full street trim!
DanH
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BLstangin
Gearhead Posts: 802
From: St. James, MN
Registered: Apr 2002
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posted 07-09-2003 01:16 AM
Dam! Don't tell me this is true! I just bought a extreme engery cam for the motor I am building and went with the hydraulic lifters for that purpose. To keep thinks quiet. Say it ain't so!  ------------------
1970 coupe restored with the help of my dad. 302 with 600 holley, aluminum intake, headers, pertonix ignitor 2 with matched coil, lakewood bellhousing, 4-speed toploader, and 2.79 open 8" rear. Soon to be 9" 3.50 trac-lok
1986 f-150, 5.0, factory towing package with original c-6 trans
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bluestreek
Gearhead Posts: 1724
From: Athens,GA
Registered: Jul 2001
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posted 07-09-2003 02:15 AM
It's usually only noticable with the quieter mufflers. Nothing like a solid cam. If it's real noisy, there may be other problems like guide alignment, rockers hitting the valve cover, or even bad lifter, rockerarm, or cam lobe or 2. You can usually tell if you have mechanical problems by closely inspecting the oil in the pan and in the filter. After the initial break-in and oil change you shouldn't find anything metallic or "gritty" in the oil. CompCams is telling everyone to use 3/4 to a full turn of pre-load. Also make sure you have at least 25 psi. of oil pressure or more and keep valve spring pressures at recommended specs.
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1966 Mustang Coupe: Custom glass hood and BIG scoop sits atop a 289 stroked to 331 c.i., Steel crank and girdle, 5.4 H-beams, Forged slugs, TFS alum. heads, ported Stealth 8020 intake, Xtreme 274 Solid Roller, Holley 750 HP, long tubes, 4speed, 9" 3.50 posi.
11.86 @ 116 mph (7.62 @ 93 mph)full street trim!
DanH
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69 Sportsroof
Gearhead Posts: 1995
From: Valley, Alabama, USA
Registered: Mar 2002
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posted 07-09-2003 12:39 PM
Did you relash your valves after cam break in? You didn't mention it so I'm assuming you didn't. I used an Xtreme energy 268 in my old chevy truck and I didnt' have any lifter noise after I adjusted the rockers with the engine running.Just a thought.
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Moneymaker
Administrator Posts: 26513
From: Lyons, IL, USA
Registered: May 99
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posted 07-09-2003 01:58 PM
With a loose lash, a little noise at idle is normal.
You can tighten them up a bit and maybe switch to a heavier weight oil to quiet them up.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
First SS/MA in the TENS!
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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MidLifCrisis
Gearhead Posts: 508
From: Frederick County, MD
Registered: Oct 2001
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posted 07-09-2003 10:49 PM
quote:
Originally posted by Moneymaker:
With a loose lash, a little noise at idle is normal.
You can tighten them up a bit and maybe switch to a heavier weight oil to quiet them up.
Yes, they were re-adjusted after beak-in. The mechanic suggested 20-50W, but isn't that heavy for a new motor? It's a 289, 30 over, has only about 1200 miles on it. I am
currently running 10-30W.
Thanks to all for your responses. Charlie
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Moneymaker
Administrator Posts: 26513
From: Lyons, IL, USA
Registered: May 99
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posted 07-10-2003 09:42 AM
20w50 won't hurt it. If you want it quiet, that should do the trick.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
First SS/MA in the TENS!
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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matt d
Journeyman Posts: 58
From: Coventry, CT USA
Registered: Mar 2003
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posted 07-10-2003 08:54 PM
I have the XE262H in my 351W and it is definitely noisy.I had a different XE262H cam in my old 302 and it was noisy too. I tried readjusting the lifter preload a few times but eventually just decided that that was the nature of these cams. As long as it is not indicating a real problem, then I don't care if they do a little extra clicking. ------------------
66 coupe with: 351W, Comp Cams XE262H cam, Trickflow heads, Performer RPM intake, Edelbrock 600 carb, Ford roller rockers, Hooker Super Comps, Dr. Gas X-pipe with 2-chamber delta flows, Tremec TKO, Steeda Tri-Ax, 9" rear w/ 3.70s and a True-Trac limited slip, 5-leaf rear springs, 620s front, KYBs, shelby A-arm drop, Torque-thrust IIs, autopower roll bar with retractable shoulder belts, custom dash and electrical system
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393Clevor
Journeyman Posts: 27
From: pittsfield, NH
Registered: Jul 2003
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posted 07-12-2003 10:00 PM
I?m running the XE274 in my 302 and I was getting a good amount of noise above 3000rpm. I tried every thing to quite it down but had no luck. I took the heads off and found all the intake guides were junk. On an idle it was nice and quite but from 3000 up it was very noise. I?m waiting for intake gaskets to put it back together so I can put it in my truck. I like the cam pulls good to 6200 and it?s got a nasty idle.------------------
[img]http://photo.starblvd.net/~393Clevor/6-1-1.jpg?i=1055089056[/img]
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MidLifCrisis
Gearhead Posts: 508
From: Frederick County, MD
Registered: Oct 2001
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posted 07-13-2003 09:34 PM
quote:
Originally posted by 393Clevor:
I?m running the XE274 in my 302 and I was getting a good amount of noise above 3000rpm.
On an idle it was nice and quite but from 3000 up it was very noise.
Mine is just the opposite. Mine ticks at idle on up to approx. 2500rpm. Under load and at highway speeds it quiets right down. I had one guy tell me it could be a bad wrist pin or piston slap. Would heavier oil quiet down a wrist pin or piston slap problem or just the lifters in order to isolate one potential problem from the other?
Thanks for all the knowlegable help. Charlie
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393Clevor
Journeyman Posts: 27
From: pittsfield, NH
Registered: Jul 2003
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posted 07-14-2003 07:22 AM
whats the rest of your valve train?
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matt d
Journeyman Posts: 58
From: Coventry, CT USA
Registered: Mar 2003
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posted 07-14-2003 06:04 PM
I wonder if it is the valve guides on my engine. The one other thing that was constant on my two valvetrain-clicking engines was the same pair of Trickflow heads. I probably have no more than 10,000 miles on the heads. Anyone know of any truth to the rumors that Trickflow twisted wedge heads had valve guides that wear out quickly? Thanks.
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MidLifCrisis
Gearhead Posts: 508
From: Frederick County, MD
Registered: Oct 2001
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posted 07-14-2003 10:03 PM
quote:
Originally posted by 393Clevor:
whats the rest of your valve train?
stock '67 heads with GT-40 valves, Compcams roller rockers, lifters and XE262H, all installed on a fresh rebuilt block. Unless someone suggests differently, I will probably pull the intake off and do a visual inspection. If I find a single bad lifter I will replace it. Otherwise I may change to Mellings lifters which are supposed to be what the OEM's use and are quiet. Alex, any suggestions on the Mellings or will there be a performance problem which should make me stay with the ticking Compcams lifters? Charlie
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