underdirve pulley

**jjc239** · 01-14-2011, 12:09 PM

hey guys, well i have a 2004 gto and my water pump just went, so i think i couldmake good use of this time and install a underdrive pulley, but i wanted to know is there any thing i should worry about? also how does this effect the water pump/a,c/alternator?

**Sarge** · 01-14-2011, 02:16 PM

I have never been able to tell any difference in any of the components you listed.
I have had mine on since 2005.

**jjc239** · 01-14-2011, 07:24 PM

Originally Posted by Sarge

I have never been able to tell any difference in any of the components you listed.
I have had mine on since 2005.

is there a real power difference>?

**Smittro** · 01-14-2011, 10:48 PM

Prolly not..

**Sarge** · 01-15-2011, 03:41 AM

Originally Posted by jjc239

is there a real power difference>?

Well...you have less parasitic loss.....so yes.

**jjc239** · 01-15-2011, 05:43 AM

i mean more down the lines of, do you actually feel a significant power gain, description says about 10 rwhp.

**Sarge** · 01-15-2011, 01:53 PM

Well....I blew up my LS1 and built a 408 Stroker....Lots of new "components" so a lil hard for me to say one specific part of many caused power I could feel.

**Smittro** · 01-15-2011, 02:05 PM

Originally Posted by jjc239

i mean more down the lines of, do you actually feel a significant power gain, description says about 10 rwhp.

No.

**GTO1_OHIO** · 01-15-2011, 02:09 PM

You will if you install an electric water pump at the same time.

**Smittro** · 01-15-2011, 02:18 PM

Originally Posted by GTO1_OHIO

You will if you install an electric water pump at the same time.

That can free up a couple/few ponies..

**jjc239** · 01-15-2011, 02:58 PM

hmm, alright...this is a little off topic but can a electric water pump be dd? how boout for 300 mile road trips? never knew how sturdy those things were

**Smittro** · 01-15-2011, 03:12 PM

Originally Posted by jjc239

hmm, alright...this is a little off topic but can a electric water pump be dd? how boout for 300 mile road trips? never knew how sturdy those things were

They've been used for many years on factory cars and in race apps.. I just would'nt skimp on whom makes it.. Research before you commit..

Some units are more reliable than others obviously..

**Sarge** · 01-15-2011, 03:13 PM

Pretty simple really. Parasitic loss reduced or eliminated equals HP gains.

**5150** · 01-15-2011, 05:05 PM

I noticed a difference with mine. The motor also winds up faster.

**x-40oz-x** · 01-15-2011, 05:11 PM

Originally Posted by jjc239

hmm, alright...this is a little off topic but can a electric water pump be dd? how boout for 300 mile road trips? never knew how sturdy those things were

Yes and yes. A good quality one should be just as sturdy and a mechanical water pump.

**GTO1_OHIO** · 01-15-2011, 05:26 PM

Originally Posted by jjc239

hmm, alright...this is a little off topic but can a electric water pump be dd? how boout for 300 mile road trips? never knew how sturdy those things were

I drove from Ohio to Florida and back with my Meziere EWP without issue.

**jjc239** · 01-15-2011, 08:02 PM

wow never knew that, for some reason i thought they were for weekend warriors only

**JonB** · 01-23-2011, 11:07 AM

The only problem if you want to call it that is low voltage at idle with my a4, with an m6 you may not have any. I have a 1000w amp which takes a lot of power, even with turning my idle up by 200rpm I still drop into the high 11 low 12v range with everything going. It goes right back up once the rpms are above about 1k or so.