Stillen Underdrive Pulley - Review/Pics/Dyno/Vid

1slow370 · 09-07-2009, 04:04 AM

ok the water pump is driven by the timing set(chains)

the power brakes run on engine vacuum

Why not make a pulley for the supercharger kit that overspins the blower to work with the underdriven crank?

Is the rubber harmonic section on the stock crank pulley just there for show?

Does a brother have to kill to get a timing scale instead of three stupid dimples?

How accurately is the zero timing mark located in relation to TDC (like less than a degree?)

ZKindaGuy · 09-07-2009, 10:34 AM

Quote:

Originally Posted by 1slow370

ok the water pump is driven by the timing set(chains)

Why not make a pulley for the supercharger kit that overspins the blower to work with the underdriven crank?

And the overspinning of the blower would just generate a ton of additional heat on top of what a blower would generate without the overspin. So why make a pulley to overspin the blower?

1slow370 · 09-08-2009, 04:54 AM

I'm sorry if you don't understand these things but if the crank is putting out 20% less belt speed and you install a 20% overdriven pulley on a supercharger they cancel out and it like having stock pulley only you gain the 5hp from slowing down the accessories. More heat? the blower won't be turning even 1rpm faster than would be with stock pulleys. Its called not wasting a $250 underdrive pulley. You must be a turbo guy.

Besides that they use a smaller pulley to go up in stages with the power so along with more heat there's a lot more air but that's irrelavent to my earlier post.

ZKindaGuy · 09-09-2009, 12:09 PM

Quote:

Originally Posted by 1slow370

I'm sorry if you don't understand these things but if the crank is putting out 20% less belt speed and you install a 20% overdriven pulley on a supercharger they cancel out and it like having stock pulley only you gain the 5hp from slowing down the accessories. More heat? the blower won't be turning even 1rpm faster than would be with stock pulleys. Its called not wasting a $250 underdrive pulley. You must be a turbo guy.

Besides that they use a smaller pulley to go up in stages with the power so along with more heat there's a lot more air but that's irrelavent to my earlier post.

I didn't read the post thoroughly enough to put it together that one pulley percentage would cancel out the other. All I did was immediately zero in on the "overspin the blower" text. Yes that is my bad for not reading the entire context of the message but but that is certainly no reason to prefix yopur answer with a degrading barb. And don't even try to say that wasn't your intention because I just won't buy it.

As someone once posted here previously that hiding anonimously behind a computer screen certainly makes some folks awfully brave.....and just plain rude

1slow370 · 09-15-2009, 02:56 AM

At least I read your post before I corrected you so as to make sure there wasn't a misunderstanding on my part that would put me at fault. Suck it up guy you incorrectly corrected me and got flammed for it. Can I have my info changed from base member to official forum D*ck?

09-08-2009, 04:54 AM	#3 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	I'm sorry if you don't understand these things but if the crank is putting out 20% less belt speed and you install a 20% overdriven pulley on a supercharger they cancel out and it like having stock pulley only you gain the 5hp from slowing down the accessories. More heat? the blower won't be turning even 1rpm faster than would be with stock pulleys. Its called not wasting a $250 underdrive pulley. You must be a turbo guy. Besides that they use a smaller pulley to go up in stages with the power so along with more heat there's a lot more air but that's irrelavent to my earlier post. Last edited by 1slow370; 09-08-2009 at 04:56 AM.

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09-07-2009, 04:04 AM	#1 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	ok the water pump is driven by the timing set(chains) the power brakes run on engine vacuum Why not make a pulley for the supercharger kit that overspins the blower to work with the underdriven crank? Is the rubber harmonic section on the stock crank pulley just there for show? Does a brother have to kill to get a timing scale instead of three stupid dimples? How accurately is the zero timing mark located in relation to TDC (like less than a degree?)

09-15-2009, 02:56 AM	#5 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	At least I read your post before I corrected you so as to make sure there wasn't a misunderstanding on my part that would put me at fault. Suck it up guy you incorrectly corrected me and got flammed for it. Can I have my info changed from base member to official forum D*ck?