Coyote Timing Chains

[ArizonaBOSS]

Rob:

In your experience at Phoenix, how often (if ever) did you guys replace the timing chains on the race engines?

 

[blacksheep-1]

Basically never, the engines are sealed units by Roush with a 50 hour time limit. I have a lot of experience with the "old style" 4 cam fords and they just do not have an issue with timing chains. I've seen some with 150K on them and still going strong. What seems to wear out is the guides more than anything.

 

[ArizonaBOSS]

Very good, appreciate that info.

Debating whether or not to replace mine when putting the new short block in--probably not now.

 

[2012Boss302]

Sorry to highjack. In your experience with the sealed motors, have there been any oil pump failures or crank gear failures? I am assuming those gears are OE Ford...

 

[blacksheep-1]

None whatsoever, the only time we had an issue with oil pressure was when we ran over some debris and cut a line from the cooler at Daytona. The Accusump saved it though. I know the Roush motors have different rod bolts, are .020 over and have decent valve springs. As I recall we do use the road race pan and pickup

 

[blacksheep-1]

That info is correct we have to use the stock pump according to the rules.

 

[2012Boss302]

Thanks for the info. There seems to be a lot of chatter going around about oil pump failures. Nice to get some info from someone with racing experience.....