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Anyway to "slip" the exhaust cam gear a few teeth?

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turboglenn

15+ Year Contributor
6,375
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Nov 5, 2007
RIpley, West Virginia
A friend of mine who recently acquired a DSM did his own timing belt install just to be safe when he bought it. Since then, things seemed to have went well but he said it didn't feel as powerful in the top end anymore. I figured he got use to a stock 2g. Well, a few days ago he buys a boost guage and the thing is not holding more than 14-16in/hg of vacuum. I go over and check it out, all the vac lines were good or we fixed them, fixed the BISS screw and still no good amount of vacuum.

I told him the only thing left was the timing was off on the cam gears, and sure enough the exhaust cam is 2 teeth retarded. (thank god he messed up "the good way" to where the valves wouldn't hit) I promised to help him, but instead of pulling all the accessories belts, the front mount and everything like a normal T-belt job, is there some way that i can just slip the exhaust cam gear forward a tooth at a time till it's right? The rest of the pulleys will have to be checked but i can cut his timing cover like i did mine, so you can see all the marks, but don't have to take everything off the motor.

Is that tool you can make from the battery bolt for a 1 or 2g motor? I have a 1gin2g so i can't use it with the modified mount setup and am not familiar with it.

Worse case we pull the whole front assemblies off and do it from scratch. but we're doing my tranny and his timing in one day ( an extra half day at the most) So, we're trying to be as efficient as possible.
 
I can't think of a single way that it'd be possible to "slip" a few teeth. If there was a way, I'm sure someone would have made it public by now. My recommendation is to reset it the correct way. Any jimmy-rigging can only be catastrophic in the end. The tool that you speak of is the depressing tool for the autotensioner. Although you are removing tension from the timing belt, you literally have to remove the cam gear from the timing belt teeth and advance them 2 teeth. How the hell you'd do that with the cam still bolted on is beyond me.

I'd say suck it up, get some 6 packs, and get're doneeee
 
Yea, if there's no "common" way of doingit, i'll go the old fashioned route and redo everything. Too bad he didn't ahve cam gears, i could just dial it back in LOL
 
1 tooth on the oem cam gears is about 8 degree's. If he's off by 2 his car must be a dog...
 
1 tooth on the oem cam gears is about 8 degree's. If he's off by 2 his car must be a dog...

Yea, one of the first give aways that is was cam timing was that he's got the stock boost control solenoid and everything hooked , no more mods than the FIPK filter i sold him. But get this his T-2tiny was hitting 19-20psi at initial spike then settling to no lower than 15 untill about 5500 then it dropped off from the turbo not moving enough air. I was just amazedd how much difference it made in his exhaust velocity!

Sice my trans is supposed to be here tomorrow, we might do his t-belt today. but for a first timer on a DSM i guess he didn't do too bad since he didn't bend any valves that we can tell
 
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