Mod worth doing? Any advantages?

 

I have not installed an underdrive pulley but have done all the work necessary while swapping h/c on a freind's car. It is alot of work for 10 HP. Then again, 10 HP is relatively hard to find. The swap will probably take the better part of a day for an DIYer. Chris

 

Thank you; you just answered my question. There's much better ways to get 10 HP.

 

8hp and costly. :thumbs: :iagree:

 

It's a no brainer if you are doing cam work. I wouldn't do it by itself, unless you are looking to fill time.

 

Thanks for all your feedback guys. As George Bush senior would say "Not gonna do it."

 

just did it!!! 3hrs!!! so it's not a all day job for DIY :smash:

 

11hp and 4hrs here.....and that is across the rpm band not at peak rpm.....very cool mod....and if you think 250 for 10hp is a lot you r in the wrong car.

 

I'm getting headers put on next week. Won't they have to lift the engine anyways?

What is invovled in intalling the underdrive pulley. Will this protect me from driving at high RPM's?

 

No, they don't have to raise the engine. If by "protect" you mean prolong
engine life relative to an engine w/o the pulley then "no". All the pulley does is slow down the accessories. By reducing accessory (all the componants driven by the crank) revolutions, the pulley will lesson the drag put on the crank (this is where the hp comes from). Your crank, and therefor your engine rpm's and the load put on it, do not change.
As C5kid stated, it is an easy 8-11 hp if you're doing the h/c swap or have the balancer off already. However, if you're not taking it off, then consider you'll be removing at least the steering rack (and maybe the radiator) and all componants remote to the damper. You stated that you are having someone else install the headers, so I assume you aren't completely comfortable tackling this job yourself. Based on this, I assume you'd be paying someone else labor to install the pulley. At $50-80/hr, this could easily turn your $250 pulley into a $400 job., to stay at the low end.
I'm not trying to persuade you to go one way or the other, but these are things to consider. In the end, this will come done to what resources and time you have and if the HP per dollar figure is right for you. Hope this helps and good luck.
Chris


[Modified by lowdowndirty, 1:54 PM 9/1/2003]


[Modified by lowdowndirty, 2:41 PM 9/1/2003]

 

:iagree:

Well Stated! :cheers:

 

Thank you for the explanation. I didn't realize it would be such an involved job, with the labor and parts I'm probably looking at close to $700 - not bad for 10HP, but with all the work I'm getting done next week, I don't want my bill to get out of hand (I'm already looking at 3-4 days of labor).

I'll ask my mechanic what he wants to do - he's generally pretty good about talking me out of things - but will most likely wait until I do the H/C, if ever.