So upon looking at my timing belt i find that all the teeth are sheared off the belt around the crank. Timing belt was brand new from honda. It lasted about 20 miles before this happened. The engine and head was just rebuilt. The only thing i can think that could have caused this would be the new springs. Does anyone out there have portflow's dual spring and retainer kit on their H23 non-vtec head? please respond with solutions. thanks

 

Wow, that sounds rough!

I wouldn't think that it would be the springs b/c the H22's rev much higher and are more commonly ran w/ high-pressure valve springs, yet I've never heard of a prob like this from them.

Sounds like something may have been too tight or rough...dang, I don't know!

 

man, whats with h22's breaking timing belts all the time...

EDIT: and h23's

 

I'm kinda at a crossroads here, not really sure what to do. do i take their springs out and put in stock springs? do i look for a stronger timing belt and risk it? don't want to bend anymore valves.

 

get a stronger timing belt, i broke a stock on on stock head and 8 psi. now fully built head and 12 psi power enterprise t-belt going strong.

 

You still have stock cams right? And stock redline? If that's the case, no need for the stiffer valvesprings.

 

sounds starnge too me but theres not way it should be that hard to turn those cams....id first make sure every things torqued proberly around the cams...

 

I have the exact head you're talking about i think. Did they fabricate up thier own retainers and use some like the LS springs as inners?
Like this:



I havent broken any timeing belts but i have broken:



I guess it is tough with those dual springs. Havent broken any belts yet....hopefully that wont happen. Dont need anythin else to worry about. Where can you get stronger timing belts?

 

Im worried im gonna break a timing belt and **** up my newly built engine....

 

that's exactly what my head looks like. not sure exactly what springs they used. all i know is they used their own stuff. i double and triple checked torque settings on everything, so i know that's not a problem. anyone know where to get a stronger timing belt.

 

Power enterprise makes em for h22's. But i cant find any for h23's.

Sucks, i spent a lot of money on valves/pisotns and i have to use OEM timing belts. I hope they dont break, but i dunno. It took a lot of force to break those cam gears.....i dunno if a timming belt can stand that tension for too long.

 

That's kinda strange that it sheared the cam gear before the timing belt. i would think the cam gear would be stronger, obviosly not. Portflow wrote me back, they said they used the same springs as the LS engine, so i assume we have the same setup. Did you not bend any valves when you broke the cam gear?

 

I bent some valves on cyl 4.

 

I feel your pain, luckily i only have 4 bent valves. i was expecting it to be worse.

 

Well, if your valve springs are that stiff to do that, your cams are going to be shot next.

 

i wish i really knew where the problem is. portflow tells me they've never had a problem with these springs. Is it possible i recieved a bad timing belt? the only problem is that it's pretty risky to just replace he belt and go on.

 

how many teeth does an h23 belt vs h22 belt have? how bout cam gears, and water pump.
i know b-series guys use different water pumps on different ls/cr/vtec setups. they just match it to the water pump, maybe we can do something like this...then you can use h22 ss t-belt


edit: even easier does a h22 cam gears bolt up to the h23 cam? if so, just use all h22 parts. ie gears, pump, and crank gear.

 

Why not just ditch the inner spring? and run 1 spring? IF you keep breaking belts and valves, its worth a shot, our motors don't rev out high enough to the point where i see to springs as necessary. Also, since when does port flow make a valve spring for the h23? I thought they used all LS springs with LS bases/shims? Do they make a h23 spring now?

 

I'd find out their specs for their springs. Since the Skunk2's are currently the stiffest springs that I've found thus far and they're just cruel to the camshaft. No broken timing belts, are you sure the timing belt was 100% properly installed? I've VERY rarely heard that a timing belt would be able to break all the teeth.

 

yes, it was properly installed. i checked it numerous times myself because i was scared of problems. i thought about removing the inner spring, but first i need to find out their stiffness. portflow is horrible about answering their phone, i can only get them through email.

 

Yea it kinda sucks. I got it cause im turboed and i didnt want any possibility of any valve float. Ive never actually brokedn a belt, just a cam gear HAH.

 

that's why i got the stronger springs also. i'm not turboed yet, but i'm built for one and saving the money. i rebuilt my engine at the same time. maybe with everything being as stiff as it was, the belt just couldn't handle it. what worries me is that you have the same set up i do and you broke a cam gear. i may just have to take out the inner spring for now.

 

are you sure the belt wasnt too tight......

 

the number of teeth on the h23 and h22 timing belts are different. so the water pumps and timing belts and cam gears arent interchangeable between the 2 motors. and in response to someone elses comment, dont only use the inner or outer part of a valve spring; that wont work. there's 2 for a reason.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Incognito H22A &raquo;</TD></TR><TR><TD CLASS="quote">the number of teeth on the h23 and h22 timing belts are different. so the water pumps and timing belts and cam gears arent interchangeable between the 2 motors. and in response to someone elses comment, dont only use the inner or outer part of a valve spring; that wont work. there's 2 for a reason.</TD></TR></TABLE>

yes there is a different # of teeth, hence if swap ALL the things that the belts turns it will work fine, 360 degrees crank=180 degees cam, no what belt/gear combo you go with....go ask ls/vtec people, and see what different setups they have...the only question is will the cam gears from h22, bolt to h23 cams.