Underdrive Pulley Installed....Just Some Thoughts - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 10-14-2003, 01:39 PM Thread Starter
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Underdrive Pulley Installed....Just Some Thoughts

Just finished installing it and I'm very pleased with the results so far. I had concerns about undercharging and cooling, but they were unfounded....
I'm running a 108 amp GM alt on a 1.6 8v. At idle, the idiot light doesn't come on and the alt is charging quite nicely.......
So far, no cooling issues........

I weighed the stock crank pulley. It weighed in at app. 4 pounds. The underdrive pulley has to be under a pound (I didn't think to weigh it before I installed it).

The motor seems to respond quicker to throttle input. Maybe that's all in my head, but given the big weight reduction, I'm sure that it is so......

The only small glitch was that the stud on the front of the motor that secures the alt bracket had to be removed and replaced with a bolt. No biggie.....

Too bad these aren't being made any more. Phillip is selling them on e-bay. Probably left over stock....

It's not for every rig, but for me, it seems to fit my needs.......
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post #2 of (permalink) Old 10-14-2003, 03:57 PM
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Re: Underdrive Pulley Installed....Just Some Thoughts

Crow I have one to fit a vitara, as I have a swift motor with the micro V pullies. I recently fitted a vitara P/steer and it has worked out a treat. Philip just didn't get the sales (read :- Support from the 4WDers ) and has gone to the street go- fasters. But I sure wish he had made those roller rocker arms he was designing.
But his product is good and I hope he gets the support he deserves.
Alf.
post #3 of (permalink) Old 10-14-2003, 04:41 PM Thread Starter
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Re: Underdrive Pulley Installed....Just Some Thoughts

Yep, me too!
He sure makes a quality piece.......
(that is a HUGE understatement).......
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post #4 of (permalink) Old 10-14-2003, 04:44 PM Thread Starter
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Re: Underdrive Pulley Installed....Just Some Thoughts

I had done some searching and there seems there was a debate regarding it's effectiveness. It seems to me that it's a cost effective upgrade......
Maybe my GM alt will last longer......
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post #5 of (permalink) Old 10-14-2003, 05:22 PM
 
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Re: Underdrive Pulley Installed....Just Some Thoughts

Crow,
I was also one of those people that had reservations about running the underdrive pulley. I am not sure about the long term affects of running one, but they seem to do great on the 1.6 16 valve engines. It also still runs nice and cool and the alternator still charges quite well.

Believe it or not there is someone still making the underdrive pulleys for the Samurai and the Sidekick. A guy up in Canada bought the rights and now makes them. I am one of the few distributors selling them so if anyone is looking for an underdrive pulley for their Samurai, Tracker, or Sidekick E-mail me directly at [email protected]

Sean DeVinney
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post #6 of (permalink) Old 10-15-2003, 03:28 PM Thread Starter
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Re: Underdrive Pulley Installed....Just Some Thoughts

Good going Sean! I always hate to see a good product discontinued.... I'm glad someone picked up the ball and ran with it!!! [img]images/graemlins/grin.gif[/img]

Are the adjustable cam sprockets available as well?
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post #7 of (permalink) Old 10-15-2003, 03:31 PM Thread Starter
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Re: Underdrive Pulley Installed....Just Some Thoughts

One other bennefit that I didn't count on is the reduction in noise. Belt/assesories generate noise that increases geometricaly with speed. At highway speeds I don't have to crank the stereo as loud now..... [img]images/graemlins/grin.gif[/img]

The difference is still perceptable at low speeds also......
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post #8 of (permalink) Old 10-15-2003, 07:45 PM
 
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Re: Underdrive Pulley Installed....Just Some Thoughts

Yes, the adjustable cam sprockets are also available, but in limited quantities right now until they go back into production again. Some new products are also in the works, which are custom hybrid Samurai/Tracker pulley's for those of us that use the 1.3 (V-belt) and add on the Tracker/Kick power steering which uses the flat belts.

Sean DeVinney
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post #9 of (permalink) Old 10-16-2003, 02:22 AM Thread Starter
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Re: Underdrive Pulley Installed....Just Some Thoughts

Keep us posted Sean!
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