Thunderheader too quiet
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Stellar HDF Member
Joined: Aug 2019
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From: Unreconstructed
I am not a high-revving rider. I want torque down low to mid range (that's why I chose those cams), so instead of going to a 110" kit would I benefit from just higher compression pistons, new valve springs and the cams?
EDIT: I just noticed the CR-570II cams recommend a cr no higher than 10.2
EDIT: I just noticed the CR-570II cams recommend a cr no higher than 10.2
Last edited by snake_eyes; Aug 29, 2022 at 02:06 PM.
Road Captain
Joined: Jun 2014
Posts: 699
Likes: 232
From: Batcave
I am not a high-revving rider. I want torque down low to mid range (that's why I chose those cams), so instead of going to a 110" kit would I benefit from just higher compression pistons, new valve springs and the cams?
EDIT: I just noticed the CR-570II cams recommend a cr no higher than 10.2
EDIT: I just noticed the CR-570II cams recommend a cr no higher than 10.2
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Stellar HDF Member
Joined: Aug 2019
Posts: 3,063
Likes: 1,867
From: Unreconstructed
I am thinking of converting to a chain-drive also, so that would be a much higher priority than new pipes.
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,830
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From: poway
Just to be clear, I'm not going to do engine work for volume, it'd be for performance. My original question asked for recommendations on replacing the Thunderheader with something louder when I swapped cams this winter. At the end of the day, it's not that important, just trying to make conversation during the boring summer months when the forum is quiet (like my Thunderheader).
I am thinking of converting to a chain-drive also, so that would be a much higher priority than new pipes.
I am thinking of converting to a chain-drive also, so that would be a much higher priority than new pipes.
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eviltwin415
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