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Noisy Hemi valve train #1447969 06/05/13 05:00 PM 06/05/13 05:00 PM
Joined: Dec 2010 Posts: 208 Norrland, Sweden Swedcharger67 OP enthusiast
Swedcharger67 OP enthusiast Joined: Dec 2010 Posts: 208 Norrland, Sweden	A friend og mine has an original 66 Hemi-Charger. The current Hemi-engine is a 1965 model, with heads from 1968. The engine has the original mechanical flat tappet cam. According to the service manual the exhaust valve clearance is supposed to be .032, intake .028 These gaps seem fairly big, and they seem to create a noisy valve train. Are these gaps normal and is the valve train normally noisy? Can anything be done to the noise? Martin, 67 Charger, 512 cui, E85, MegaSquirt MS3X sequential ignition & injection

Re: Noisy Hemi valve train [Re: Swedcharger67] #1447970 06/05/13 05:12 PM 06/05/13 05:12 PM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	Tighten the lash and see. I'd run about .024 and .028".

Re: Noisy Hemi valve train [Re: Challenger 1] #1447971 06/05/13 05:31 PM 06/05/13 05:31 PM
Joined: Jan 2003 Posts: 5,357 Rancho Cordova, California (Sa... hemi71x master
hemi71x master Joined: Jan 2003 Posts: 5,357 Rancho Cordova, California (Sa...	Hemi's sound like a coffey can of nuts and bolts, being shaken around, all the time. Nature of the beast. RF-4C Phantom 69-370 Zweibrucken, Germany

Re: Noisy Hemi valve train [Re: hemi71x] #1447972 06/05/13 05:40 PM 06/05/13 05:40 PM
Joined: Mar 2003 Posts: 4,848 Memphis HemiRick master
HemiRick master Joined: Mar 2003 Posts: 4,848 Memphis	Then why have I heard many quiet Hemis ? Take care, Rick 68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451

Re: Noisy Hemi valve train [Re: HemiRick] #1447973 06/05/13 05:58 PM 06/05/13 05:58 PM
Joined: Jan 2003 Posts: 4,105 Horsham, Pa. Finoke master
Finoke master Joined: Jan 2003 Posts: 4,105 Horsham, Pa.	Quote: Then why have I heard many quiet Hemis ? Thats a good question, i've heard them both ways also. Mine is loud but i have heard some that are louder and some that are quiter?

Re: Noisy Hemi valve train [Re: HemiRick] #1447974 06/05/13 06:01 PM 06/05/13 06:01 PM
Joined: Jan 2003 Posts: 5,357 Rancho Cordova, California (Sa... hemi71x master
hemi71x master Joined: Jan 2003 Posts: 5,357 Rancho Cordova, California (Sa...	Quote: Then why have I heard many quiet Hemis ? Maybe because they are 70-71 hydraulic lifter. RF-4C Phantom 69-370 Zweibrucken, Germany

Re: Noisy Hemi valve train [Re: Swedcharger67] #1447975 06/05/13 06:03 PM 06/05/13 06:03 PM
Joined: Oct 2012 Posts: 1,106 Northeast V VincentVega super stock
VincentVega super stock V Joined: Oct 2012 Posts: 1,106 Northeast	Quote: A friend og mine has an original 66 Hemi-Charger. The current Hemi-engine is a 1965 model, with heads from 1968. The engine has the original mechanical flat tappet cam. According to the service manual the exhaust valve clearance is supposed to be .032, intake .028 These gaps seem fairly big, and they seem to create a noisy valve train. Are these gaps normal and is the valve train normally noisy? Can anything be done to the noise? an original 47 year old engine, eh? that's a lot of years. Could even be noisy rods or wrist pins, that's a long time to be a performance engine. Looking for 1975 through 1978 B body 4 door sedan sheet metal or parts cars - monaco, fury, coronet. Please let me know

Re: Noisy Hemi valve train [Re: Swedcharger67] #1447976 06/05/13 06:19 PM 06/05/13 06:19 PM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	When was the last time your friend checked the lash?

Re: Noisy Hemi valve train [Re: VincentVega] #1447977 06/05/13 06:20 PM 06/05/13 06:20 PM
Joined: Aug 2005 Posts: 4,799 ILL M MLR426 master
MLR426 master M Joined: Aug 2005 Posts: 4,799 ILL	As mentioned tighten up the lash. Its common for solid lifter loose lash cams to make excessive noise. They sound like crap for sure. MLR426

Re: Noisy Hemi valve train [Re: hemi71x] #1447978 06/05/13 07:42 PM 06/05/13 07:42 PM
Joined: Jan 2003 Posts: 75,004 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,004 U.S.S.A.	Quote: Quote: Then why have I heard many quiet Hemis ? Maybe because they are 70-71 hydraulic lifter.

Re: Noisy Hemi valve train [Re: JohnRR] #1447979 06/05/13 09:50 PM 06/05/13 09:50 PM
Joined: Mar 2008 Posts: 1,913 central P.A. HEMIDOG 70 top fuel
HEMIDOG 70 top fuel Joined: Mar 2008 Posts: 1,913 central P.A.	my 528 is noisy more so when hot it's a flat tappet. Do you guy's think it's time to set the lash already? it only has around 500 mi on it since it came off the dyno. Barton used the tool steel lifters with a bullet solid cam. I did not get my cam card but the dyno sheet says 280 cam. I think the gross lift is around .667"intake and similar on the exhaust. the dyno sheet says lash set to .20 but that is crossed off and .10 is wrote on for both intake and exhaust lash. this sounds very tight can I hurt anything running the lash this tight? The engine has an iron block aluminum heads and roller rockers.

Re: Noisy Hemi valve train [Re: HEMIDOG 70] #1447980 06/05/13 10:00 PM 06/05/13 10:00 PM
Joined: Jan 2003 Posts: 6,392 nielsville, minn. Q quickd100 master
quickd100 master Q Joined: Jan 2003 Posts: 6,392 nielsville, minn.	Set the valve lash as specified, you get used to the valve train noise, it's normal. It reminds me of a well oiled sewing machine. If you don't like it turn up the radio. With a cast iron block and aluminum heads the .010/.010 is probably pretty close setting them cold.Dave

Re: Noisy Hemi valve train [Re: quickd100] #1447981 06/05/13 10:15 PM 06/05/13 10:15 PM
Joined: Feb 2003 Posts: 8,020 Pangaea B5 Bee master
B5 Bee master Joined: Feb 2003 Posts: 8,020 Pangaea	OEM and most MP solid cams were .028/.032 Aftermarket cams generally have less lash, therefore quieter, ramp design has a lot to do with lash specs. The other extreme are OEM slant six solid cams, .010/.012, almost no valvetrain noise. I like the sound of a solid cam. I'd try .002 tighter but not more, why take a chance of hurting something.

Re: Noisy Hemi valve train [Re: quickd100] #1447982 06/05/13 10:22 PM 06/05/13 10:22 PM
Joined: Mar 2008 Posts: 1,913 central P.A. HEMIDOG 70 top fuel
HEMIDOG 70 top fuel Joined: Mar 2008 Posts: 1,913 central P.A.	yup your right it does sound like a sewing machine. So .10 is definitely a cold lash setting? or cold it ever possibly be a warm lash setting.

Re: Noisy Hemi valve train [Re: Swedcharger67] #1447983 06/05/13 10:53 PM 06/05/13 10:53 PM
Joined: Jan 2003 Posts: 584 San Jose, CA Blue69Charger mopar
Blue69Charger mopar Joined: Jan 2003 Posts: 584 San Jose, CA	Mine has hydraulic lifters and it still sounds like a sewing machine. That's how you can tell hemis at car shows. I've never heard one as quiet as a wedge motor. Even my 2010 challenger has some of that sound.

Re: Noisy Hemi valve train [Re: Swedcharger67] #1447984 06/06/13 01:41 PM 06/06/13 01:41 PM
Joined: Aug 2003 Posts: 43,157 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,157 Bend,OR USA	Quote: A friend og mine has an original 66 Hemi-Charger. The current Hemi-engine is a 1965 model, with heads from 1968. The engine has the original mechanical flat tappet cam. According to the service manual the exhaust valve clearance is supposed to be .032, intake .028 These gaps seem fairly big, and they seem to create a noisy valve train. Are these gaps normal and is the valve train normally noisy? Can anything be done to the noise? When you say original engines is a 1965, what is the assembly date of the motor? If it is a race 1965 engine converted to a street hemi motor with the 1968 heads and street ehmmi intake and carbs the race cam is a lot bigger than the street hemi cams If it is a early 1966 street hemi motor with the block cast after July of 1965 try tightening the lash up .004 to .006 with the motor HOT Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Noisy Hemi valve train [Re: quickd100] #1447985 06/06/13 03:21 PM 06/06/13 03:21 PM
Joined: Nov 2003 Posts: 2,715 closer to Canadian beer! torkrules I'm neurotic
torkrules I'm neurotic Joined: Nov 2003 Posts: 2,715 closer to Canadian beer!	Quote: Set the valve lash as specified, you get used to the valve train noise, it's normal. It reminds me of a well oiled sewing machine. If you don't like it turn up the radio. With a cast iron block and aluminum heads the .010/.010 is probably pretty close setting them cold.Dave Couldn't agree more. I have alum heads and iron block. I started at .016...too noisy. Went to .013....better, but still noisy. .010 did the trick. Dead quiet when cold, quieter mechanical noise when hot.

Re: Noisy Hemi valve train [Re: Swedcharger67] #1447986 06/06/13 04:02 PM 06/06/13 04:02 PM
Joined: Jan 2003 Posts: 15,976 Chilliwack B.C. Canada R RUNCHARGER I Live Here
RUNCHARGER I Live Here R Joined: Jan 2003 Posts: 15,976 Chilliwack B.C. Canada	Noise to some, music to me. Shaft collars also reduce the noise a bit. My 66 has a "quality" sound to it, shaft collars and .024 and .028. Sheldon

Re: Noisy Hemi valve train [Re: RUNCHARGER] #1447987 06/07/13 08:31 PM 06/07/13 08:31 PM
Joined: Jan 2003 Posts: 926 MICHIGAN B BB65Barracuda super stock
BB65Barracuda super stock B Joined: Jan 2003 Posts: 926 MICHIGAN	Whats the Problem? All solids make noise to some degree. He can always swap in a hydraulic 1957 Power wagon wm300 original 10.000 mile truck, 1964 dodge Polara Convertible numbers matching

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