Need Help Locating A Heavy Duty Serpentine Belt Tensioner.

Bullitt347 · Jul 30, 2014

I tried using the ThumpRRR Racing tensioner

But it tensions in an anti-clockwise rotation and the 5.0 Foxbody cars take a clockwise rotation tensioner. ThumpRRR Racing said they could not modify to work on a 5.0 Mustang, even though their site claims the tensioner will work on all 84-95 Fords. They at least took it back and credited my card back the $510.00 that bad boy cost. As the drag car I am building is using an 8-rib serp belt to drive the Kenne Bell 2.8LQ supercharger to the tune of 20+psi I am looking for something a bit stronger than the stock cast tensioner. Anyone have any ideas?

madspeed · Jul 30, 2014

reverse the spring on that beotch

madspeed · Jul 30, 2014

this is the tried and true method

http://www.angelfire.com/ns/PurgingPony/Belttensioner.html

madspeed · Jul 30, 2014

@84Ttop @srtthis you guys got anything?

Bullitt347 · Jul 30, 2014

madspeed said:
reverse the spring on that beotch

According to ThumpRRR that is not an option on their tensioner. And the tensioner has to tension like stock in a clockwise rotation so your second post is invalid

madspeed · Jul 30, 2014

I remember seeing some posts a while back regarding using a Dayco heavy duty tensioner from an HD truck, so run a search here and on on the corral, even perhaps yellow bullits

srtthis · Jul 30, 2014

mines just an old school style with and adjustment rod...

84Ttop · Jul 30, 2014

I would look into building a manual tensioner. I haven't seen anything heavy duty to the point that you would seemingly need.

madspeed · Jul 30, 2014

Not as much belt wrap as most would like to see, but i like my Breeze Automotive kit

srtthis · Jul 30, 2014

sucks that RR never made a manual tensioner for the push rod motors like he did for the mod motors. those things were a BEAST!

Bullitt347 · Jul 30, 2014

I don't know about a manual tensioner. I know with the stock type tensioner the tensioner will tighten up the belt when you accelerate the engine, and slacken off a bit when the throttle is released. Don't know if that is a good thing or not when driving a supercharger. Certainly having the belt get tighter at WOT would be a good thing to cut down on belt slip, if that is an issue. You guys provided pics of a manual tensioner for a freakin' alternator .........how bout one used in a supercharger application. Just a little bit different load being ran through that belt for the blower compared to an alternator. Anyhow, the feed back is appreciated, gets the old noggin thinking

Boosted92LX · Jul 30, 2014

Bullitt347 said:
I don't know about a manual tensioner. I know with the stock type tensioner the tensioner will tighten up the belt when you accelerate the engine, and slacken off a bit when the throttle is released. Don't know if that is a good thing or not when driving a supercharger. Certainly having the belt get tighter at WOT would be a good thing to cut down on belt slip, if that is an issue. You guys provided pics of a manual tensioner for a freakin' alternator .........how bout one used in a supercharger application. Just a little bit different load being ran through that belt for the blower compared to an alternator. Anyhow, the feed back is appreciated, gets the old noggin thinking

Well, the alternator is just about the easiest component to swivel and use as a manual adjuster. My car is turbo and I tension with the alternator.. Are you running an alternator? Why don't you post pics and it'll help with ideas? March makes some nice manual tensioners you might be able to adapt. Hard to go wrong with a good ol' turnbuckle.

I realize you are using a blower, but seeing what you've got would help..

Bullitt347 · Jul 31, 2014

Well the thing is, I am using the stock alternator mounting bracket that has the provision for the stock type tensioner.

This picture is dated but gives you an idea. The alternator now sports a 4" dia pulley and the supercharger has been moved up 1.5" and forward 3.4". Plus the support plate for the supercharger and idler pulley has been refined, but that does not change the basic layout of the drive belt. The whole point of wanting a HD tensioner is that if it fits in the stock location, then I don't have to monkey around with fabricating something else up to accommodate it. Lord knows I have customized so much as it is, that I would like to take the easy way out on this if possible.

Boosted92LX · Jul 31, 2014

Mine replaces the factory alternator bracket and relocates the alt to make room for the turbo. It may not be heavy enough for what you want, but it installed easy and works great. On3 turbo kit. Some people hate 'em.. I got no complaints. I'll try to post a pic when I get off work.

Noobz347 · Jul 31, 2014

*GASP*

Please tell me that you're going to make this into a kit!

How high does that thing sit?

Bullitt347 · Jul 31, 2014

Noobz347 said:
*GASP*

Please tell me that you're going to make this into a kit!

How high does that thing sit?

It sits to high for a stock hood for sure. I am still in the finalizing stages of the build. One thing leads to another and the next thing you know you are re-engineering everything to take advantage of a change that was made, that at the time seemed to be insignificant.

Noobz347 · Jul 31, 2014

What size cowl do you think you'll end up with when it's all done?

Bullitt347 · Jul 31, 2014

I do not know yet. But if one were to not raise the supercharger 1.5" like I did, then lowered the k-member in the car a bit, which you would offset this increase in ride height with coil-over struts, then maybe not much of a cowl at all. My finished inlet would have to be revised to place the throttle body lower, but it is all do-able. I will certainly take some pic's and measurements when it is all said and done. Right now I have a Harwood 6" Carbon fiber cowl hood that goes to the windshield, and some base measurements show that it is much bigger than I really need. But hey, it looks Kool.

Noobz347 · Jul 31, 2014

Holler if you get to a point where you might need something from a plasma cutting table.

If it's drawn out on graph paper with measurements, it's pretty easy to do.

Bullitt347 · Jul 31, 2014

Well, lets see how this tensioner thing goes...............I might have to take you up on that.

Need Help Locating A Heavy Duty Serpentine Belt Tensioner.

I have been doing it wrong this whole time

Colonel Mustard

Colonel Mustard

Colonel Mustard

I have been doing it wrong this whole time

Colonel Mustard

the guy doing it does every local racers rear end

Attachments

They make new pistons every day, so why worry?

Colonel Mustard

the guy doing it does every local racers rear end

I have been doing it wrong this whole time

It's only an inch or two. What's the big deal?

I have been doing it wrong this whole time

It's only an inch or two. What's the big deal?

Stangnet Facilities Maint Tech... Er... Janitor

I have been doing it wrong this whole time

Stangnet Facilities Maint Tech... Er... Janitor

I have been doing it wrong this whole time

Stangnet Facilities Maint Tech... Er... Janitor

I have been doing it wrong this whole time

Similar threads

Privacy & Transparency

Privacy & Transparency