Bulk buy for 1st Gen Lightweight Pulley - NOT Underdrive - Page 3

**defiler** · 8-22-07, 16:21

Quote:

Not to mention running anything electrical in your car like oh, I dont know... the IGNITION!

You can run your car without an alternator. Just not for very long

**Jake** · 8-22-07, 16:47

Quote:

Originally Posted by defiler

You can run your car without an alternator. Just not for very long

That's like saying you can survive unrderwater, just not for very long.

**cuJe5ter** · 8-23-07, 11:57

Quote:

Originally Posted by Jake

That's like saying you can survive unrderwater, just not for very long.

Quote:

Originally Posted by defiler

You can run your car without an alternator. Just not for very long

i think his point was more for track only cars. ones that are trailered to the track, make a few runs, then go back on the trailer.

**Jake** · 8-23-07, 12:14

Its a requirement to have an alternator in SCCA racing.
Maybe that's just in my category, tho.
I dont see any way to get out of using an alternator, because your only replacement is batteries, and the added weight negates the couple of HP youd gain.

**cuJe5ter** · 8-23-07, 12:27

Quote:

Originally Posted by Jake

Its a requirement to have an alternator in SCCA racing.
Maybe that's just in my category, tho.
I dont see any way to get out of using an alternator, because your only replacement is batteries, and the added weight negates the couple of HP youd gain.

lol. i meant drag strip. not road course. all you'd need is to maybe keep a low level charger on the car when its not running.

El_Kameleon_G · 8-23-07, 16:09

^Yep, that's how they do it at the track.

**1FIERCEGT** · 8-23-07, 17:10

still got no answer as to what the weight differential would be?

**Jake** · 8-23-07, 17:17

El...
did you post this and then realize it was a dumb question since the water pump runs off the timing belt pulley and deleted it?

Quote:

El_Kameleon_G has just replied to a thread you have subscribed to entitled - Bulk buy for 1st Gen Lightweight Pulley - NOT Underdrive - in the Hot Deals & Bulk Buys forum of MX6.com.

This thread is located at:
http://www.mx6.com/forums/hot-deals-bulk-buys/185370-bulk-buy-1st-gen-lightweight-pulley-not-underdrive-new-post.html

Here is the message that has just been posted:
***************
What about the water pump? Won't get far without that.

El_Kameleon_G · 8-23-07, 17:52

Quote:

Originally Posted by Jake

El...
did you post this and then realize it was a dumb question since the water pump runs off the timing belt pulley and deleted it?

Sure did. I guess I can't use my ninja skills here.

Sorry, hehe.

**Jake** · 8-23-07, 18:30

Its okay, i do that all the time. Just ask Sick6... (or dont).

So, I havent gotten ANY info on pulley balancing, nor can I find much online. Maybe people dont balance their crankshaft pulleys?

**proberider** · 8-23-07, 18:40

Defiler aren't you a CNCer? Answer this question...

**Jake** · 8-23-07, 18:59

By the way, I just did some researching and I dont see that it is that important to balance an aluminum pulley after lathing it as long as the lathe has a very low tolerance, like .002" or less, and the lathe is turning at 2000 rpm or more. The act of lathing the aluminum balances it. BUT if you go and bore holes in it to lighten it, THEN you have to rebalance it, which I guess you cant do on a lathe. I really need to do some more research on this... I will call some places.

BUT, I did find out more about anodizing. The anodizing process strengthens the aluminum and is pretty important for a billet aluminum pulley. We wouldnt want the pulley to come apart. SO I think its pretty important to get them anodized regardless of color.

**defiler** · 8-23-07, 19:51

Quote:

Defiler aren't you a CNCer? Answer this question...

I can do CNC, but that doesn't mean I "am a CNCer".

IIRC Sick has talked about a shop that does balancing before. Maybe he could chime in with any info he has...

Quote:

The act of lathing the aluminum balances it. BUT if you go and bore holes in it to lighten it, THEN you have to rebalance it, which I guess you cant do on a lathe. I really need to do some more research on this... I will call some places.

That's the gist of it. Even if you lathe it, parts of the metal "could" be more dense than the other parts, which could make it unbalanced.

**proberider** · 8-23-07, 20:10

so lets skip the boring of holes to save 3oz, and I would like one that turns the alt only. I already have the pp.com one, but would love to ditch the AC and PS again.

**Jake** · 8-24-07, 14:52

Quote:

Originally Posted by proberider

so lets skip the boring of holes to save 3oz, and I would like one that turns the alt only. I already have the pp.com one, but would love to ditch the AC and PS again.

Well I just realized 2 things, that the 6 holes are not even and there is a notch so it will be unbalanced by design, and will need to be balanced. There is a shop here that can do it if the center hols is 1" in diameter. Can someone go grab a crank pulley and measure it real quick?

8-23-07, 12:14	#34 (permalink)
Jake Join Date: Nov 2000 Location: Houston, TX, USA Age: 43 iTrader: (0)	Its a requirement to have an alternator in SCCA racing. Maybe that's just in my category, tho. I dont see any way to get out of using an alternator, because your only replacement is batteries, and the added weight negates the couple of HP youd gain.
	4WS.ORG (4 wheel steering) \--\ l /--/ U-turn in the driveway!

8-23-07, 18:30	#40 (permalink)
Jake Join Date: Nov 2000 Location: Houston, TX, USA Age: 43 iTrader: (0)	Its okay, i do that all the time. Just ask Sick6... (or dont). So, I havent gotten ANY info on pulley balancing, nor can I find much online. Maybe people dont balance their crankshaft pulleys?
	4WS.ORG (4 wheel steering) \--\ l /--/ U-turn in the driveway!

8-23-07, 18:59	#42 (permalink)
Jake Join Date: Nov 2000 Location: Houston, TX, USA Age: 43 iTrader: (0)	By the way, I just did some researching and I dont see that it is that important to balance an aluminum pulley after lathing it as long as the lathe has a very low tolerance, like .002" or less, and the lathe is turning at 2000 rpm or more. The act of lathing the aluminum balances it. BUT if you go and bore holes in it to lighten it, THEN you have to rebalance it, which I guess you cant do on a lathe. I really need to do some more research on this... I will call some places. BUT, I did find out more about anodizing. The anodizing process strengthens the aluminum and is pretty important for a billet aluminum pulley. We wouldnt want the pulley to come apart. SO I think its pretty important to get them anodized regardless of color.
	4WS.ORG (4 wheel steering) \--\ l /--/ U-turn in the driveway!

8-23-07, 16:09	#36 (permalink)
El_Kameleon_G Join Date: Aug 2007 Location: San Antonio, TX, USA Age: 23 iTrader: (0)	^Yep, that's how they do it at the track.

8-23-07, 18:40	#41 (permalink)
proberider Join Date: Sep 2004 Location: Lower Mt. Bethel, PA, USA Age: 33 iTrader: (2)	Defiler aren't you a CNCer? Answer this question...

8-23-07, 20:10	#44 (permalink)
proberider Join Date: Sep 2004 Location: Lower Mt. Bethel, PA, USA Age: 33 iTrader: (2)	so lets skip the boring of holes to save 3oz, and I would like one that turns the alt only. I already have the pp.com one, but would love to ditch the AC and PS again.