no compression
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Joined: Jul 2012
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From: Lincoln ne
no compression
So after all the cam.change and lifter tappets and adjustable pushrods comes either a bent/stuck valve or valve spring. No compression in the rear cylinder. So now comes the teardown. I want to build this now. Higher compression (staying below 10.25) without shaving heads. If I go with a 10.0:1 compression piston in a 10 over cylinder and use the thinner. 030 head gasket would that still keep me in that area?
Elite HDF Member
Joined: Sep 2007
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From: Bluffton, South Carolina
If you waited between pushrod adjustments until you can spin the pushrod, thenI doubt you hurt a valve. More than likely you have a pushrod too tight. Have you tried re-adjusting the rear pushrods????
John
John
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Joined: Dec 2010
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From: Coromandel Peninsula New Zealand
It would and you can check with the rocker box off.
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Joined: Jul 2012
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From: Lincoln ne
I did wait for the lifters to bleed down before moving to the next pushrod. But I've had this spring sound since I installed the new rear exhaust pushrod. I've readjusted them about 20 times each (being honest not exaggerating. So basically I'm at pulling the rocker boxes... if I'm doing that I might as well go all the way down to the base gaskets that are seeping right?
Seasoned HDF Member
Joined: Dec 2010
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From: Coromandel Peninsula New Zealand
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Elite HDF Member
Joined: Sep 2007
Posts: 4,468
Likes: 12
From: Bluffton, South Carolina
Spanners, that's the greatest thing about cyber diagnosing... "The oh yeh and it's doing this too, is that important???". But that's what makes it interesting, doesn't it!!!
Now it sounds like something is sticking or broken causing a part/parts of the valve train to not folloew the profile of the cam!!
John
Now it sounds like something is sticking or broken causing a part/parts of the valve train to not folloew the profile of the cam!!
John
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Seasoned HDF Member
Joined: Dec 2010
Posts: 7,736
Likes: 1,524
From: Coromandel Peninsula New Zealand
Spanners, that's the greatest thing about cyber diagnosing... "The oh yeh and it's doing this too, is that important???". But that's what makes it interesting, doesn't it!!!
Now it sounds like something is sticking or broken causing a part/parts of the valve train to not folloew the profile of the cam!!
John
Now it sounds like something is sticking or broken causing a part/parts of the valve train to not folloew the profile of the cam!!
John
Road Captain
Joined: Mar 2006
Posts: 579
Likes: 26
From: Virginia
It's not too bad. I took mine apart a couple of weeks ago. Scott at Hillside machine is boring it, giving me 10.5:1 pistons, stage 1 heads, woods 6 cam, and dyna 2000 ignition with a custom curve. Just playing the waiting game right now.
