i have a boosted ls fully built. the problem im having is the timing belt is getting chewed up. im thinking it might be the spring im running they are the brain crower Dual spring, titanium retainer. the spec are Spring Pressure: Seat: 1.400" @ 70 lbs / Open: 0.905" @ 210 lbs / Coil Bind: 0.815"

 

anyone?

 

Stretched = valvetrain tension, too much tensioner preload, ect...

"Chewed Up" = Install Error, defective parts.

If you are eating up timing belts you either installed the belt guides backwards or something is rubbing up against it. I have seen bearing on the water pump/tensioner going bad and will cause the belt to track up against an object/guides. It's not from your valve springs/camshafts.

 

might be the washer thats over the crank, after the belt is on over the crank theres a washer thats installed then theres the crank pulley that goes over that. if the concave of the washer is the oposite or the washer is backwards it will tear up the timing belt. it can also cause the belt to ride on the cam gears wrong and it will walk twards the valve cover as it spins eventually and will rub on the inside of the valve cover that covers the cam gear side.

 

Why do people repeat so much on here? Also, I already said it's a belt guide...

http://www.hondaautomotiveparts.com/...SHAFT+-+PISTON

 

second opinions are never a bad thing

 

Installer error

 

i know how to put the belt on. belive me i checked to see if the belt is rubbing but its not.

 

Over tightening the belt will cause it as well.

 

I just noticed you never stated WHERE on the belt it is getting ruined. When people say "chewed up" I assUme the sides.

 

^^This.

And check all the gears for damage. A little burr on any given gear will trash it in no time.

 

when i say chewed up i mean the teeth on the inside of the belt are gone. there no mark on the sides. im going to pull it off this weekend and will post up pics of the belt. its not a stock belt nither its a gates racing belt.

 

everything is new

 

the frist time it happen i thought it was because the stock belt wasnt strong eought for it then i used the racing belt. it just took a bit longer for it to eat it up.

 

what type/brand of cam gears you running?

post up pics of this belt

 

Yikes, I would be trashing or returning parts without hesitation.

 

stock

thats pretty much where im at right now. its not fun racking valve again.

 

I always wondered if paying for a Toda belt was worth $200.00 compared to a NAPA belt made by (Gates?) at $19.00 wholesale.

 

here a quick pic before i get the belt out

 

well i know gates makes good belts and this racing one i had last it a while before it got chewed up

 

could be a tension issue....how are you tensioning the belt?

 

Judging by the looks of the other teeth - strictly installation error. You need to triple check everything you have installed. Also, if you hear a "supercharger" whine coming from the belt it is WAY too tight. I personally have never seen stripped teeth like that before on a non-stock belt. Even running stiffer springs than you are; stretching - yes, shearing - no.

 

The way the service manual tell you.

 

Yea, thats no good. Check the gears for irregular wear. Any idea on the condition of the motor? I am assuming the valves are done

I've seen people tension timing belts with 2x4s and not do that. As long as all the parts are in the right place I seriously doubt its an install error. I would suspect a poorly machined part since you say everything is new. Are they factory parts?

 

Those look to be factory cam gears. Did you install the camshafts before the springs to verify there were no hang ups? I use Skunk2 Pro cams, valve springs, retainers, and valves quite often and have never had this happen. Even while running the crappy Gates belts (they like to stretch). So again, something got overlooked.