Twin Cam Engine noise

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Jul 19, 2021 | 10:46 AM

tinymike66

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Joined: Jan 2011

Posts: 373

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From: Ontario

Twin Cam Engine noise

Hi all.
so I just can't seem to find where I'm getting noise.
This is a fresh build, engine now broken in and it's so noisy

To describe it, sounds like , when u put a stack of money in a money counting machine with a slight tick too.

Happens most at lower gear 2000 to 3000rpm and quiets out when I shift to higher gear and either below 2000rpm or above 3000.

I've switched out pushrods to solid ones
I've double, triple and quadruple checked clearances
I've had crank redone with s&s pin, pro plugged and welded
rocker boxed grinded to ensure over 50thou clearance for springs
pistons to valve clearance was over 100thou

Had the cases on cam side ground down for cam clearance
s&s lifters

I'm completely baffled
I've taken this engine apart couple times to find issues and there's nothing I can see that would cause this

I have a daytona twin tec module

98" build
Woods tw6h cams

Can this be a case of ...you got a noisy engine?
Only thing that wasn't replaced were the rockers and rocker assembly as they appeared to be in good shape

Frustrating a lot of hard work, research , advice from you guys on here and doing everything proper way.

Anyways...anyone got any ideas , I more that appreciate your thoughts

Cheers

Jul 19, 2021 | 12:07 PM

todd-67

Ultimate HDF Member

Joined: Jun 2009

Posts: 6,899

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From: OH

From what you are describing as far as the noise and the RPM's where it is most pronounced I am guessing too much rocker shaft to arm clearance. Check out rocker lockers. They may help.

Jul 19, 2021 | 12:29 PM

djl

HDF Community Team

Joined: Jun 2006

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From: san antonio

Post a video. With a new build, could be many sources for noise but describing the noise leaves too much to the imagination.

Jul 19, 2021 | 12:48 PM

tinymike66

Thread Starter

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Joined: Jan 2011

Posts: 373

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From: Ontario

Quote:

Originally Posted by djl

Post a video. With a new build, could be many sources for noise but describing the noise leaves too much to the imagination.

Ill have to post video next weekend
I only ride on weekends and its most noticeable when engine has warmed up or is hot

Jul 19, 2021 | 01:30 PM

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Jul 19, 2021 | 03:04 PM

Max Headflow

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Joined: Dec 2005

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From: poway

It's likely the 6Hs but early tensioners or loose cam gears can make the noise worse.

You can try and bottom out the lifter and back off 1/4 turn.

Jul 19, 2021 | 03:22 PM

tinymike66

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Joined: Jan 2011

Posts: 373

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From: Ontario

Quote:

Originally Posted by Max Headflow

It's likely the 6Hs but early tensioners or loose cam gears can make the noise worse.

You can try and bottom out the lifter and back off 1/4 turn.

I don't have adjustable
I put in solids. I know those cams have a hard ramp
I've heard some engines not often but some are just noise makers
I'm hoping that's the case here