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Kevin Leitem
05-21-2006, 07:21 PM
Magnum Powers is now selling new springs to go inside our tensioners. The springs are a lot stronger than the stock ones. they are about the same stiffness as what comes on the Ford Lightning. So there shouldn't be any concerns about them being too stiff. It took me about 5 minutes a piece to change them out myself. If you had an extra set of hands it would make it very easy mod. he is selling them for 40.00 a pair.

Grims95SC
05-21-2006, 08:20 PM
woot! Finally! I checked Spinning Wheels and SCP and its not listed on either vendor's site so would I be right to assume you order them direct through MP?
Anybody know how much pressure these new springs'll put on the belt?

Jeff Bratton
05-21-2006, 08:39 PM
Kevin.... Hey, Could you please possibly do a 'How-To' write on how you did this precedure. Charles told me how over the phone, but I was not in front of my car to follow him. I have a set coming in the mail along w/my MPIII.
If you could do this I and others, I'm sure would appreciate this.:)

Thanks.

Jeff B.

Kevin Leitem
05-21-2006, 09:55 PM
It is actually pretty simple. i put the locator pins on the back in the vise to hold the tensioner. looking at the front of the tensioner. there is the steel plate. in the middle of that plate(where the bolt goes through to attach the tensioner) there is a square piece of aluminum. that steel plate is just pressed on to that square aluminum. I just pried off the plate. you will bend the plate, but i just hammered it flat again. the plate may fly off with a little force, but nothing serious, just be careful. remove old spring, install new one. on the other side, the slot that the spring tab rode in must be enlarged to accomidate the larger spring wire diameter. mate the 2 pieces. this is where a friend come in handy. now you have to rotate tensioner to get the preload on the spring. before you take apart the tensioner, just look at the spring tabs and see their position to each other. with the tensioner cocked enough put the steel plate back on. it will need to be pressed back on. i just used a socket just large enough to fit over the aluminum piece and hammered it back on. when i hammered it back on i had the tensioner sitting on the bench so the pins would not break while it was in the vise. then i just used a center punch and dimpled the aluminum to make sure it is nice and tight

Kevin Leitem
05-21-2006, 09:56 PM
I would say they are about 3 times stronger than the stock springs.

supercatxr7
05-22-2006, 12:04 AM
So does this mean you are doing away with the helper springs you put on the car last year?

XxSlowpokexX
05-22-2006, 12:05 AM
AHh i see Charles has been up to no good lately..Its about time! I never thought of this

Kevin Leitem
05-22-2006, 06:20 AM
So does this mean you are doing away with the helper springs you put on the car last year?
i am going to start at 25% with just the new springs, then work my way to 35% OD. I may still need my helpers at 35%

rzimmerl
05-22-2006, 11:13 AM
Finally an answer to an SCer's worst problem. Good to see another new part for these old cars :). I'll be ordering a set this week.

92strokedbird
05-22-2006, 11:43 AM
Ordered a set this morning,should help to stop the slipping.

Toms-SC
05-22-2006, 04:59 PM
Interesting idea

Sharon Silver
05-22-2006, 10:30 PM
There is a manually set, no-spring tensioner available for about $275, though it made need some base plate modification, too. What are your thoughts on this?

Grims95SC
05-22-2006, 10:35 PM
$275??? That's money that can be spent better somewhere else!

Kevin Leitem
05-22-2006, 10:42 PM
There is a manually set, no-spring tensioner available for about $275, though it made need some base plate modification, too. What are your thoughts on this?
with the stretching of the belts under boost we have to have a tensioner that can adjust to the stretching belt. A solid tensioner works on a coggged belt setup

XxSlowpokexX
05-22-2006, 10:51 PM
It's supplamental tensioner..I wa sthinking of an adjustable fixed one as well to help with belt size issues

007_SuperCoupe
05-22-2006, 11:19 PM
I'm curious as to how much tension these provide. These are definately a good deal, and a much needed improvement over the stock tensioners, but I just want to know how much more tension they provide. Has anyone actually got some quantitative data on them? It would be nice to see exactly what we'd be purchasing, that's all.

Kevin Leitem
05-23-2006, 10:14 PM
I tested a stock tensioner tonight with a torque wrench and it went to 11 ft lbs at the full tension. the new spring went to 30 ft lb.


I'm curious as to how much tension these provide. These are definately a good deal, and a much needed improvement over the stock tensioners, but I just want to know how much more tension they provide. Has anyone actually got some quantitative data on them? It would be nice to see exactly what we'd be purchasing, that's all.

007_SuperCoupe
05-23-2006, 11:06 PM
I tested a stock tensioner tonight with a torque wrench and it went to 11 ft lbs at the full tension. the new spring went to 30 ft lb.

Thanks, Kevin. That's what I wanted to see. It's nearly 3x as much tension. That's great!

supercatxr7
06-03-2006, 12:25 AM
I put my springs in tonight. It was actually a lot easier than what i thought, just follow Kevin's instructions. Definitely can tell there is more tension and the lightning spring is thicker than the stock spring. Don't know what it did for me yet as I have some crushed fuel lines I am replacing as well.

Tony8470
09-07-2006, 03:20 AM
I put mine on tonight and theres a hell of a differnece. I cant say in boost because I peg the stock gauge, but in response. I can stomp on the gas and it will jerk the car. Before it would be more of a surging feeling. This is a must have for anyone.

Payton
10-17-2006, 12:10 PM
I was inspired by Bill's instructions how to change ABS accumulator so I decided to make few pictures during my swap. Thay say a picture worth a thousand words...
1. Anyhow, remove your tensioner and clean it - use either Brake cleaner or some sort of degreaser.
http://i11.tinypic.com/48gyphs.jpg
2. Then, following Kevin's instructions, I put the back of the tensioner in the wise.

Looking at the front of the tensioner, there is the steel plate. in the middle of that plate(where the bolt goes through to attach the tensioner) there is a square piece of aluminum. that steel plate is just pressed on to that square aluminum. I just pried off the plate. you will bend the plate, but i just hammered it flat again.
I wasn't sure what I am doing there, but after I pried first one off, I had all the confidence in the world working on the second one. Here how it looks when it's off http://i11.tinypic.com/2ut5c2q.jpg
The hole tensioner comes apart:
http://i11.tinypic.com/2mcszyc.jpg
After you take it apart you would have an idea how to put it all together!
Good luck guys!
P.S. I installed large washers as Dave D. suggected before the bolt, to hold the retainers nice and tight in place!

rzimmerl
10-17-2006, 12:39 PM
MP installation instructions right from the website

http://www.magnumpowers.com/thunder_springs.php

supercatxr7
10-18-2006, 12:25 AM
I would also recommend putting some grease on the internal plastic and metal surfaces as when I first put mine together they squeeked and were rather noisy. I just took mine apart tonight and greased the insides and noise is now gone.

victor malvar
10-20-2006, 09:53 AM
W00t Finally! I checked Spinning Wheels and SCP and its not listed on either vendor's site so would I be right to assume you order them direct through MP?
Anybody know how much pressure these new springs'll put on the belt?

Thank you for referring us to Donna... she has been great!!
We do have some steel chrome tensioner plates with new bolts.
We had these made originally by a good friend and we feel this could be a good addition to the springs Charles made and we DO carry the springs. These items really give your engine a nicer look for those who like the Bling! These plates were made thanks our friend Ken made them for himself then we had them made in some quantities. We went a step further and made a kit for these 30 # tensioner springs or for just looks depending on what your ultimate goals are. I am just getting back to normal after some
health issues so just getting back into the swing of things on the boards.... We have these at the new store under the pulleys category. We will place some pictures here for visual and how they look. These would be a good addition to the tensioners and the springs. We did them this way and they work well. You can take a look at them at....
Thanks for your help once again.
Victor and Diane
www.spinningwheels-sc.com
352-732-5013 for credit card purchasing or tech support!