new cam & sounds a little loud ?
#1
new cam & sounds a little loud ?
Just got the dart running again after a cam upgrade in a 360 and it sounds like lifters are loud when i installed it i did use assembly lube all new comp cam cam & lifter set tourqed all rockers just sounds like not enough oil ? pulled valve covers and they were cover in oil so oil is pumping eny one out there help please it ran for about ten then i shut it down !
#10
I couldnt find any specific hard no's for max lift on an otherwise 'stock' engine, but found this thats kind of an interesting read. http://board.moparts.org/ubbthreads/...Number=5201776 if you notice they talk about the duration more than lift which is where you do get into trouble...
Finally found ALL the specs of this cam:
Cam Style
Hydraulic flat tappetBasic Operating RPM Range
1,800-6,200 RPM
226 Exhaust Duration at 050 inch Lift
234 Intake Duration at 050 inch Lift
226 int./234 exh.Advertised Intake Duration
268 Advertised Exhaust Duration
276 Advertised Duration
268 int./276 exh.Intake Valve Lift with Factory Rocker Arm Ratio
0.494 in.Exhaust Valve Lift with Factory Rocker Arm Ratio
0.513 in.Valve Lift with Factory Rocker Arm Ratio
0.494 int./0.513 exh.
Lobe Separation 110 (degrees)
Computer-Controlled Compatible No
Valve Springs Required Yes
So maybe someone can actually answer your original quest.
Also, did you use new liters? Are they the Rhodes style ("variable duration" lifters)? The Rhodes style lifters are noisy, almost like solid lifter noisy. And the reason someone ask if you soaked your lifters over night in oil is for pre-lubing the internals, I normally dont soak them over night I put them in a pan of oil that completely covers the lifters and use a pushrod to 'pump' them up by hand, spending 6-7 minutes on each lifter. Ive never had a problem with that method.
Finally found ALL the specs of this cam:
Cam Style
Hydraulic flat tappetBasic Operating RPM Range
1,800-6,200 RPM
226 Exhaust Duration at 050 inch Lift
234 Intake Duration at 050 inch Lift
226 int./234 exh.Advertised Intake Duration
268 Advertised Exhaust Duration
276 Advertised Duration
268 int./276 exh.Intake Valve Lift with Factory Rocker Arm Ratio
0.494 in.Exhaust Valve Lift with Factory Rocker Arm Ratio
0.513 in.Valve Lift with Factory Rocker Arm Ratio
0.494 int./0.513 exh.
Lobe Separation 110 (degrees)
Computer-Controlled Compatible No
Valve Springs Required Yes
So maybe someone can actually answer your original quest.
Also, did you use new liters? Are they the Rhodes style ("variable duration" lifters)? The Rhodes style lifters are noisy, almost like solid lifter noisy. And the reason someone ask if you soaked your lifters over night in oil is for pre-lubing the internals, I normally dont soak them over night I put them in a pan of oil that completely covers the lifters and use a pushrod to 'pump' them up by hand, spending 6-7 minutes on each lifter. Ive never had a problem with that method.
Last edited by MrOldart2U; 04-17-2012 at 09:48 PM. Reason: adding lifter info/questions
#12
The cam has an aggressive lobe but it isnt super aggressive. But it DOES require the correct spring.
Pull a valve cover and make sure as stated above the retainer isn't hitting the guide.
Next, rotate the motor buy hand and slide a feeler guage in between the spring rings and make sure they all have clearance and you aren't stacking a spring. They may have shimmed one and caused an issue.
Call shop and ask them for the spring number. Most use large wholesalers who also make retail stuff under different names so some shops don't want to give you info but you bought them so get the stats.
I like to pull a spring and take it to a different shop with a spring tester. They will have custom pre measured bars for their spring checker and quickly get you installed (closed) and your open pressures. They can give you bind height too. This takes 30 seconds to do and is good to have.
Then measure the spring pad in your head to the retainer bottom to get your installed ACTUAL height.
Once you have pressures call Lunati and get a GOOD tech and ask him exactly what the cam needs for pressures. You do NOT need the "should work" numbers. Get the required min pressures.
Anytime I hear a noise problem with a Voodoo, Comp XE or XFI cam it comes back to spring pressures and lack of valve control.
I omitted the stuff from posts above. They are all correct. If you didnt clay the piston and rotate the motor you may have a piston to valve issue. If that happened the damage has been done.
Good Luck!
Pull a valve cover and make sure as stated above the retainer isn't hitting the guide.
Next, rotate the motor buy hand and slide a feeler guage in between the spring rings and make sure they all have clearance and you aren't stacking a spring. They may have shimmed one and caused an issue.
Call shop and ask them for the spring number. Most use large wholesalers who also make retail stuff under different names so some shops don't want to give you info but you bought them so get the stats.
I like to pull a spring and take it to a different shop with a spring tester. They will have custom pre measured bars for their spring checker and quickly get you installed (closed) and your open pressures. They can give you bind height too. This takes 30 seconds to do and is good to have.
Then measure the spring pad in your head to the retainer bottom to get your installed ACTUAL height.
Once you have pressures call Lunati and get a GOOD tech and ask him exactly what the cam needs for pressures. You do NOT need the "should work" numbers. Get the required min pressures.
Anytime I hear a noise problem with a Voodoo, Comp XE or XFI cam it comes back to spring pressures and lack of valve control.
I omitted the stuff from posts above. They are all correct. If you didnt clay the piston and rotate the motor you may have a piston to valve issue. If that happened the damage has been done.
Good Luck!
The following users liked this post:
67hemidart (04-22-2012)
#13
thank you !!!! what i found was the push rod's were not long enough after talking with lunati i have a friend with a test adjustable rod coming by and then we will order the proper rods . when it ran it sounded just a little ticky not blown lifter loud the shop told me that the never tell you you need to get new rods but truly should have asked ! My fault but just glad nothing major went wrong !
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