Today my H22 turbo Prelude was getting dyno'd, while it was being put under a 3k rpm load the car went from a normal pitch to an extremely high pitch sound. After visual inspection the timing belt got chewed up pretty bad and it jumped timing. Any ideas of what could have caused this?

 

misalinged timing gear? pullies?

 

I have a feeling that is what the problem was, but worst case senario what else could cause this.

 

Loose adjustable cam gear?

 

Did you do the H23 tensioner conversion or still using the auto tensioner ?

 

they are stock gears with the auto tensioner.

 

Possible your auto tensioner took a ****.

 

If the timing was off in the first place could that have caused this problem?

 

Auto tensioners go back on box stock cars so on a turbo car it can fail pretty fast. If the cam timing was off shouldnt you have noticed that before you/your tuner attempted to make a single dyno pull?

 

No you can drive around with timing off and the tbelt will not shread.

A shreaded t belt is because the gears arent lined up properly.

If you have an auto tensionor, odds are that it did take a **** on you. If you have a manual tensinor this would not happen.

 

This was my first project that I worked on by myself and when I did the timing belt I didnt feel 100% with it so I asked my tuner to look at it. So maybe he never even checked it over. Are there any internal problems that could arise from this?

 

Could have bent your valves messes up the pistons its hard to say possibly could have dropped a valve and had it go threw the motor or nothing could have went wrong and your a lucky man. The only way to find out it fit the t-belt and do a compression check and leakdown test and go from there if your #'s are low or you have a 0compression or 100% leakdown cylinder I would pull the head. Goodluck

 

Is this something the tuner should have caught or is this a no fault situation?

 

im going to be doing a timing belt change. ive noticed shopping around for a timing belt, alot of different places have different amount of teeth on the belt? does it matter how many teeth are actually on the belt? more teeth the better? can anyone help??

 

I would stick with Honda OEM

 

 

156 teeth line up better so far from my current research. I am trying to do the h22 timing belt install on a h23 manual tensioner with the honda vtec belt (155) right now.

Also side note, a good reason why the auto tensioner (hydraulic) may fail for some people is that they dont maintain it. It does have a way for you to add oil there has to be a level maintained.

 

Even with the manual tensioner you still need to use the OE h22 belt. Its a tight fit, but its the proper belt.

I have never heard of needing to maintain the auto tensioner. If its in good working order it should never need to have fluid added.

 

Found out it was the tensioner that broke, monday will determine the condition of the motor.

 

Sorry to hear...plz keep us updated. Mine took a crap for the 3rd time a few weeks ago *shakes fist*

 

It should be topped up if you let fuild out of the system for one reason or another. Sometimes fuild leaks out of the screw hole during installation so you have to top it off. Manual tensioner. Thats whats going in my h22a vtec as we speak. New Energy polyurithane motor mounts, and new header aswell. Should be a fun drive, I can't wait.

 

Its so much easier to just go to a manual tensionor when doing a timing belt. I dont know the eaxct prices but I bet that they are close.

 

installation is much harder to do with the manual tensioner on h22.

 

http://www.importrp.com/product.php?productid=41997

 

Well I finally got the word on the compression test and it showed 180 on all four. I have JE 9:1 pistons are these pretty good numbers?