Idler Pulley Question

Ponyman460 · 04-11-2005, 07:29 AM

I have a 98 GT with an 02 Aluminum Explorer PI engine in it...here is my question:

It appears my idler pulley has taken a crap on me...and I want to replace it. Can I buy one of the billet idlers like they make for the cobras and put it on? I would have to find one that is the right size (definately not 90mm), but otherwise would it work? I see they are only like $65, and they seem to be better quality...Let me know what you think..

Rick

Ponyman460 · 04-11-2005, 11:30 AM

also., is there any hp to be had with the larger idlers? (maybe spin the alt faster?)

USMCstang · 04-11-2005, 12:17 PM

I don't see why it wouldn't fit...but you may want to ask Randy on Modu*** ***pot.

I would tend to believe a larger pulley would free up a pony or two. The Alt and Water pump pulley are larger with underdrives, and the crank is smaller, so I would think it would slow the system down a little more...you may run into charging problems though.

Ponyman460 · 04-11-2005, 12:21 PM

I asked him...no answer... I have an ud crank and wp pullies on the car now...just wondering if it would work, and maybe spin the accessories at a different rate. are you sure it would slow the accessories down?

USMCstang · 04-11-2005, 12:25 PM

I would tend to think so...the belt would have to "travel further" to make a full revolution of that pulley. If you think about it, the alternator pulley is slowed down by the combo of a small dampener pulley and larger WP pulley and vice versa. I would think adding a larger idler pulley would add to the slowing effect.

Hopefully Randy gets back to ya...I'm out for the day in 5...4...3...2...1... :toothy9:

ThePunisher · 04-11-2005, 06:38 PM

Quote:

Originally Posted by Ponyman460

I have a 98 GT with an 02 Aluminum Explorer PI engine in it...here is my question:

It appears my idler pulley has taken a crap on me...and I want to replace it. Can I buy one of the billet idlers like they make for the cobras and put it on? I would have to find one that is the right size (definately not 90mm), but otherwise would it work? I see they are only like $65, and they seem to be better quality...Let me know what you think..

Rick

Funny you posted this today, my inner idler pulley on my 01 Gt started making noise today. Stupid, queer, cheap bearings that they put in things nowadays. If you put a larger diameter idler pulley on, it would slow the idler itself down, I don't see how this would affect anything else but I could be wrong.

Ponyman460 · 04-11-2005, 06:44 PM

I ended up getting a stock one for $10

04-11-2005, 07:29 AM	#1 (permalink)
Ponyman460 Post Whore Join Date: Apr 2005 Location: Jupiter, FL Posts: 120	Idler Pulley Question I have a 98 GT with an 02 Aluminum Explorer PI engine in it...here is my question: It appears my idler pulley has taken a crap on me...and I want to replace it. Can I buy one of the billet idlers like they make for the cobras and put it on? I would have to find one that is the right size (definately not 90mm), but otherwise would it work? I see they are only like $65, and they seem to be better quality...Let me know what you think.. Rick __________________ -Rick 98 White Gt Words To Live By: "if you want it bad enough, go get it! "Live by the Golden Rule: He who has the gold, makes the rules!"

04-11-2005, 11:30 AM	#2 (permalink)
Ponyman460 Post Whore Join Date: Apr 2005 Location: Jupiter, FL Posts: 120	also., is there any hp to be had with the larger idlers? (maybe spin the alt faster?) __________________ -Rick 98 White Gt Words To Live By: "if you want it bad enough, go get it! "Live by the Golden Rule: He who has the gold, makes the rules!"

04-11-2005, 12:17 PM	#3 (permalink)
USMCstang Secretary of Defense Join Date: Apr 2005 Location: Akron, OH...5 Mins from Summit Racing Posts: 355	I don't see why it wouldn't fit...but you may want to ask Randy on Modu* *pot. I would tend to believe a larger pulley would free up a pony or two. The Alt and Water pump pulley are larger with underdrives, and the crank is smaller, so I would think it would slow the system down a little more...you may run into charging problems though. __________________ ~Mike 98 GT 4R70W Buckeye Stangs - Ohio Based Mustang Enthusiasts

04-11-2005, 12:21 PM	#4 (permalink)
Ponyman460 Post Whore Join Date: Apr 2005 Location: Jupiter, FL Posts: 120	I asked him...no answer... I have an ud crank and wp pullies on the car now...just wondering if it would work, and maybe spin the accessories at a different rate. are you sure it would slow the accessories down? __________________ -Rick 98 White Gt Words To Live By: "if you want it bad enough, go get it! "Live by the Golden Rule: He who has the gold, makes the rules!"

04-11-2005, 12:25 PM	#5 (permalink)
USMCstang Secretary of Defense Join Date: Apr 2005 Location: Akron, OH...5 Mins from Summit Racing Posts: 355	I would tend to think so...the belt would have to "travel further" to make a full revolution of that pulley. If you think about it, the alternator pulley is slowed down by the combo of a small dampener pulley and larger WP pulley and vice versa. I would think adding a larger idler pulley would add to the slowing effect. Hopefully Randy gets back to ya...I'm out for the day in 5...4...3...2...1... :toothy9: __________________ ~Mike 98 GT 4R70W Buckeye Stangs - Ohio Based Mustang Enthusiasts

04-11-2005, 06:44 PM	#7 (permalink)
Ponyman460 Post Whore Join Date: Apr 2005 Location: Jupiter, FL Posts: 120	I ended up getting a stock one for $10 __________________ -Rick 98 White Gt Words To Live By: "if you want it bad enough, go get it! "Live by the Golden Rule: He who has the gold, makes the rules!"

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