AWESOME My idler pully blew apart, lost blower and Alt.

[04terminator04]

Has anyone ever delt with this? My Idler pully blew apart...like i mean atleast 2 inches of the pully is gone. Ill post pictures soon.

I was driving down the road heard a nice clunk...not good, but kept driving thinking it was something on the road....later down the road ( i was on the highway) I noticed i had alot of hesitation, then noticed and heard i wasnt making boost...got home popped the hood to find my belt held on by the tensioner and alternator...and saw the massacured pully...time for an upgrade.

:fm: not happy with this over the long weekend...

 

[vladSVT]

Common thing to happen when you have an upgraded blower pulley and stock idlers. Mine almost blew (had a huge stress crack on it) thank god it didn't fly off on the highway.

 

[IronTerp]

Happens quite frequently for those that do not upgrade their OEM idler pullies when they increase boost levels.

 

[Jomo1994z71]

This is why I shake my head when I see pullied/whippled/kb'd terminators that are still running stock idler pullies...Glad I upgraded before something like this happened...
Post some pics of the carnage

 

[deec73]

Has anyone ever delt with this? My Idler pully blew apart...like i mean atleast 2 inches of the pully is gone. Ill post pictures soon.

I was driving down the road heard a nice clunk...not good, but kept driving thinking it was something on the road....later down the road ( i was on the highway) I noticed i had alot of hesitation, then noticed and heard i wasnt making boost...got home popped the hood to find my belt held on by the tensioner and alternator...and saw the massacured pully...time for an upgrade.

:fm: not happy with this over the long weekend...

Get you some Metco Idlers and you wont have to worry about that ever happening again, :beer:

 

[04terminator04]

carnage wasnt bad but not great, just the belt and tensioners are needed.

I didnt think by doing a pully it would put so much stress on the idlers...either way im looking at the steeda idler kit for all 3 of them.

 

[Jomo1994z71]

You got lucky. Sometimes the fan/radiator get taken out.

 

[Jroc]

Get you some Metco Idlers and you wont have to worry about that ever happening again, :beer:

Agreed, Metco pulleys FTW.

 

[04terminator04]

Not too bad for what has happened...just baffled as to why these break under a little more load...you think they'd take that into consideration

 

[SickBlackMach]

Not too bad for what has happened...just baffled as to why these break under a little more load...you think they'd take that into consideration

They built them for "stock" purposes, not for adding aftermarket pulleys/increased blower rpm. It just seems like too much stress for the stockers to take, aftermarket ones will do you right. I've got a mix of Billetflow and Reichard Racing idlers. Time to replace and rock on man!

 

[Lloyd Xmas]

Happened to me also..Welcome to the club.

 

[BOLT330]

This exact event happened to me a couple months ago. Now I am running billetflow pullies with my KB 2.6!

 

[03cobra#694]

Yet another one finds out...

 

[futureSVT]

i could understand if the OP had a lower, but with just an upper the speed of the belt/idler pulleys are not changed. Is it just the added pressure of having a super tight belt?

 

[mu22stang]

i could understand if the OP had a lower, but with just an upper the speed of the belt/idler pulleys are not changed. Is it just the added pressure of having a super tight belt?

This question never gets answered and I wish I knew some tech on the subject.

My thought is: Yes, the increased serpentine tension is the sole source of this "common" idler pulley failure. Belt tensioners automatically adjust the tension, but only to a point. If you notch the tensioner and/or tighten the serpentine system beyond the adjustment range of the tensioner, the radial strength of the stock idlers can be exceeded. The picture above seems to illustrate that the failure was from an extreme side load, cause by serpentine tension.

 

[04terminator04]

Well good news, im getting Metco 90mm idlers.

And I cant imagine it having so much tension on it because I have a 74" belt and my pully is a 2.800"

Ill post pictures as soon as i get them

 

[Red Turtle]

Yes, this is common to those who up the boost and not the idlers. Many threads with your exact situation. Idlers shouldn't take you very long to put on, so your weekend should be fine.

 

[04terminator04]

yeah im pretty excited, im trying to get to the track on sunday....if my parts are here, just bought brand new tires so im pretty happy right now.

 

[Jomo1994z71]

What tires did you go with? and From where?
Also make sure you have the right belt for the new setup

 

[cobra=trouble]

Yep! Those ford pulleys suck!