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Discussion Starter · #1 ·
I've got some friends building a 4.6 4 valve motor that's going to have a KB blower on. KB told them to use the timing chain cover from a 99' or 01' motor. We are trying to order some of the parts they need and have found that the cam chain tensioners and timing chain covers are different from the 99 to the 01 (same as the 03's). Can anyone explain the difference in the covers and the tensioners? Does the 01 style tensioner have to use the 01' style cover? Is the 01' and up style tensioner different because it was improved?

Also does anyone have either a 99 or 01 timing chain cover they would like to sell?

Thanks in advance for any help!
Darin
 

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one of them is a strait hydraulic unit and the other is a combo between hydraulic with a manual stop these are the ones we use that way if you lose oil pressure you don't lose the heads too because it keeps the chain from jumping a tooth
 

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Discussion Starter · #4 ·
one of them is a strait hydraulic unit and the other is a combo between hydraulic with a manual stop these are the ones we use that way if you lose oil pressure you don't lose the heads too because it keeps the chain from jumping a tooth
You wouldn't happen to know which year is which would you? KB said the blower is compatable with the 99 or 01 cover. Do you know if say the 01 tensioners are compatable with the 99 cover and vise-versa?

This motor is going to be used in a road course car so the combination adjuster would definately be the way to go to possibly save the heads in the event of a motor failure.
 

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The hydraulic chain tensioners will work regardless of what timing cover is on it.

The difference between the 2 timing covers one has a belt tensioner that points vertically, the other is horizontal.
 

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Discussion Starter · #7 ·
The hydraulic chain tensioners will work regardless of what timing cover is on it.

The difference between the 2 timing covers one has a belt tensioner that points vertically, the other is horizontal.
Would all of the other pulleys and bracketry be the same then? Just the orientation of the tensioner would be the only difference?
 
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