Good call Turbo. DrX, got your harmonic balancer pinned?

Bill

 

Definitely pin the crank pulley. Can you fit a slightly shorter belt on? I had my best results with a belt that would barely fit on. I think this left less play in the tensioner during transitions.

 

That's what I was thinking when I saw that the belt was half off both the Radix and tensioner pulleys but yet didn't come completely off. It's like something was bringing it forward and holding it there. Didn't feel like crawling under there tonight.

The pinning kit has been sitting on my workbench for months. I wasn't in a big hurry as I was going to do it whenever I got around to doing a cam swap. In fact, I had trouble getting Mag to sell me one. The tech I got insisted that pinning was not necessary on trucks.

That is the Gates belt in the most recent pics. Might try a slightly shorter one next time.

 

I will be pinning mine at the install of cam and Radix.
I would also suggest the 100mm Metco or equivelant idler pulley's. It could help the belt from slipping or walking off the front edge of blower pulley.

Jim

 

Pulley looked well aligned and didn't look like it had moved. Difficult to see without taking some things apart but looked like the bolt was all the way in too. Stuck my hand up there and unscrewed the bolt with my fingers.

So this thing will screw itself out and back in again? How many threads are in the crank? Seems like I only turned it as many times as there are black threads at the end.

 

I just started using the more expensive Dayco belt (they have both an economy and expensive version) with the cross hatching in the ribbed area and it is as good as the Gatorback with a lifetime warranty (Goodyear makes the Dayco Belt). The other great thing so far is that it is not stretching like the Gates did under a load.

 

Your right, it doesn't look to be many threads holding it in. I can see why it would be easily backed out.
Can you put red lock tite on that bolt? I'm really shocked a bolt that gets 240 ft lbs of tq applied to it, isn't held in by more threads.

Jim

 

that was a close one...I never had a problem running gatorbacks when i had my maggy....I ran a belt that barley fit on there and it never slipped or moved on the pully a bit.

 

Good catch......I have read a few posts of people running a Radix finding their crank pulley bolt only hand tight. I guess it is a very good idea to pin the pulley.

 

I used red loctite and pinned my crank pulley. Hasen't moved in 1 year and 5K miles.