Excessive noise
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Tourer
Joined: Jan 2011
Posts: 376
Likes: 27
From: Ontario
Excessive noise
Hello, I'm running a Velvatouch System in my 82 shovelhead.
The tappets and blocks are older from the original velvatouch era and the pushrods and seats are from the current owner Dave.
I followed Dave's install instructions.
My engine sounds incredibly noisey....chattering like crazy from the nosecone area.
I disassembked and inspected , all looks good.
Tested to see if oil pump was returning oil.all good.
I can tell oil getting to heads and definitely oil in the lifters when I took everything apart.
The sound is crazy loud and sounds like chattering lifters and rods ..you name it.
Any ideas what this could be?
A2 cam
New engine only ran for 40km since fresh build
Running 50wt oil
Thanks
The tappets and blocks are older from the original velvatouch era and the pushrods and seats are from the current owner Dave.
I followed Dave's install instructions.
My engine sounds incredibly noisey....chattering like crazy from the nosecone area.
I disassembked and inspected , all looks good.
Tested to see if oil pump was returning oil.all good.
I can tell oil getting to heads and definitely oil in the lifters when I took everything apart.
The sound is crazy loud and sounds like chattering lifters and rods ..you name it.
Any ideas what this could be?
A2 cam
New engine only ran for 40km since fresh build
Running 50wt oil
Thanks
Stellar HDF Member
Joined: Apr 2016
Posts: 3,328
Likes: 2,120
From: Masshole
Did you clearance the rear lifter block since you have the A2?
Did you double/triple check the correct placement of the pushrods? Longest one to front exhaust.
How many flats did you adjust the pushrods to? I believe they are 9.
Did you double/triple check the correct placement of the pushrods? Longest one to front exhaust.
How many flats did you adjust the pushrods to? I believe they are 9.
Seasoned HDF Member
Joined: Nov 2006
Posts: 12,878
Likes: 5,449
From: la la land jerzey
Some shovel engines we found have a shorter top retainer bottoms - to top of the seal distance - this can and does make contact and causes a noise that you must fix it will destroy the new engine
you used Velva touch lifters that they do not make for a stock app - the rollers on the lifters are bigger for evo conversion stuff this will make the cam even lift more then the shock lifters - as the roller wheels are larger
you must pull the heads and fix this ——- wee had this in another post not to do this and blending parts is doing this
you used Velva touch lifters that they do not make for a stock app - the rollers on the lifters are bigger for evo conversion stuff this will make the cam even lift more then the shock lifters - as the roller wheels are larger
you must pull the heads and fix this ——- wee had this in another post not to do this and blending parts is doing this
Thread Starter
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Tourer
Joined: Jan 2011
Posts: 376
Likes: 27
From: Ontario
Where would I clearance the rear lifter block?
I triple checked two long rods exhaust, two short ones intake.
Only two sizes
Front intake and exhaust 12 flats as per Dave himself
Rear intake and exhaust 8 flats
Stellar HDF Member
Joined: Apr 2016
Posts: 3,328
Likes: 2,120
From: Masshole
Flats should be 9, all around. Not sure why he said 12/8, perhaps for performance, but everyday use should be 9.
Just my 2cents.
Thread Starter
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Tourer
Joined: Jan 2011
Posts: 376
Likes: 27
From: Ontario
Sorry, not sure how "rear" got in there. Whenever aftermarket cams are used they need to be checked for clearance. Clearance is done between cam and lifter block (after torqued down). They can hit depending on the cam rise.
Flats should be 9, all around. Not sure why he said 12/8, perhaps for performance, but everyday use should be 9.
Just my 2cents.
Flats should be 9, all around. Not sure why he said 12/8, perhaps for performance, but everyday use should be 9.
Just my 2cents.
Between cam.and actual bottom lifter blocks, I did not. I only checked clearances with the can in regards to the cases and I did have to remove some material.
When I disassembled everything there was no signs of any contact ...the blocks had non and nothing on the lobes, although I know that doesn't mean there isn't any. You would think there would be.
As for the pushrod adjustments Dave was specific to the number of flats he instructed to me.
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