Wouldn't make a difference. Kevlar wouldn't be used in the teeth of the timing belt. It's the backing material. The majority of the time when your talking timing belt failure it boils down to the rubber cracking and breaking. Leading to missing teeth or less support for the backing fabric causing it to shear. Kevlar doesn't help this situation.
As long as you have the tension set properly, which is really easy on our cars, you do not have to worry about stretching. Turbo or strokers don't put out nearly enough power to warrant any different material or procedure.
If you're that worried about a timing belt or its durability. Go M50. While 45k miles is half of what some other manufacturers do, it's a safe number that is actually quite a long time. Think about how many revolutions the engine will turn in that time frame. I once did a calculation on my Probe GT turbo. It was roughly 2900 revolutions per mile at 70MPH. That, is a low number by contrast when compared to adding acceleration, and idling (Which isn't counted) revolutions. Multiply that by 45k, and you get a conservatively calculated 130 million engine revolutions.
And, in all fairness. Even if your engine lasts to a million miles. You've only replaced your timing belt 23 times.
Which, over the course of however many years that is, by todays cost for a belt and tensioner, is $553.41 spent over that million miles. This is assuming your replacing the tensioner and spring every other belt.
Chump change.
-
If you can't be "Bothered" to change your timing belt at its regular interval, go drive a honda. Changing a timing belt is not hard and it doesnt take more then 2 hours. Higher output engines i can see wanting something stronger, but for anything less its simply over engineering the wheel.Leave a comment:
-
-
I was thinking a kevlar belt.. Not for time change interval but for those of us with strokers or forced induction setups.
Sent from my Galaxy Nexus using Tapatalk 2Leave a comment:
-
45k miles is actually quite a long time for a belt to last... Those belts are primarily made for industrial machinery, and will be exposed to a lot less heat as compared to an engine.
Just because it's polyurethane, does not mean it will last longer. Go ahead and call them to ask. But I have a feeling you won't get the response you want.Last edited by TurboJake; 12-09-2012, 12:52 PM.Leave a comment:
-
Alternative timing belt material...
Surely someone else has thought about this so feel free to laugh in my face. This came to me this morning as I am finishing up my own broken timing belt job and looking at thread after thread of people replacing broken timing belts like it's business as usual. I don't know about you but I'd like to get more then 45k out of a timing belt... or at least a little more peace of mind for the boosted crowd which I will hopefully be a member of soon.
I started some searching and came up with this company: http://www.brecoflex.com/index.php?C...TID=1&SMENID=1
Looks like you can custom order a timing belt in any size... I sent them an email and will call them tomorrow but I am willing to even engineer something... seems like there would be a market.
Has anyone else thought along these lines?
Leave a comment: