Time to change AP1 Retainers and Keepers?
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Joined: Apr 2001
Posts: 2,898
Likes: 1
From: Fort Worth
I would do a valve adjustment- typically they didn't get them right from the factory, and usually by 50k or so it's at the edge of the spec, anyhow.
With respect to the dual valve springs, anytime there is an increase in spring pressure (like with these) there is some additional loss due to the increased resistance in the valvetrain. It's minor, though, and even if you noticed the few HP it would still be worth it from an insurance standpoint.
The engineering is solid- Honda has used dual valve springs in the past. The idea is that you can increase seat pressure without going with some massive sized springs, and also have a better solution for harmonics.
With respect to me coming out, that is definitely postponed. I could still come if enough of you are willing to split my airfare and someone put me up for the evening.
With respect to the dual valve springs, anytime there is an increase in spring pressure (like with these) there is some additional loss due to the increased resistance in the valvetrain. It's minor, though, and even if you noticed the few HP it would still be worth it from an insurance standpoint.
The engineering is solid- Honda has used dual valve springs in the past. The idea is that you can increase seat pressure without going with some massive sized springs, and also have a better solution for harmonics.
With respect to me coming out, that is definitely postponed. I could still come if enough of you are willing to split my airfare and someone put me up for the evening.
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Joined: Dec 2008
Posts: 1,057
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From: South Florida
Originally Posted by marcucci,Dec 9 2009, 11:20 PM
I would do a valve adjustment- typically they didn't get them right from the factory, and usually by 50k or so it's at the edge of the spec, anyhow.
With respect to the dual valve springs, anytime there is an increase in spring pressure (like with these) there is some additional loss due to the increased resistance in the valvetrain. It's minor, though, and even if you noticed the few HP it would still be worth it from an insurance standpoint.
The engineering is solid- Honda has used dual valve springs in the past. The idea is that you can increase seat pressure without going with some massive sized springs, and also have a better solution for harmonics.
With respect to me coming out, that is definitely postponed. I could still come if enough of you are willing to split my airfare and someone put me up for the evening.
With respect to the dual valve springs, anytime there is an increase in spring pressure (like with these) there is some additional loss due to the increased resistance in the valvetrain. It's minor, though, and even if you noticed the few HP it would still be worth it from an insurance standpoint.
The engineering is solid- Honda has used dual valve springs in the past. The idea is that you can increase seat pressure without going with some massive sized springs, and also have a better solution for harmonics.
With respect to me coming out, that is definitely postponed. I could still come if enough of you are willing to split my airfare and someone put me up for the evening.
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Joined: Apr 2001
Posts: 2,898
Likes: 1
From: Fort Worth
Originally Posted by captainbk,Dec 11 2009, 04:19 PM
With so many GREAT local shops around the state, why would you even consider flying a mechanic in from TX? That sounded far fetched when I first heard it.
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Joined: Mar 2002
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Originally Posted by captainbk,Dec 11 2009, 04:19 PM
With so many GREAT local shops around the state, why would you even consider flying a mechanic in from TX? That sounded far fetched when I first heard it.
Joined: Oct 2005
Posts: 7,279
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From: Bradenton, Florida
Originally Posted by gernby,Dec 11 2009, 10:07 PM
I would NEVER pay a shop to do a valve adjustment. I'd rather never have one done.
and yes I will name two shops in the Tampa/ St Pete area, that I would take my car to in a heartbeat.