I fitted my Saginaw PS pump today and I will be need a different length belt. Anyone know approximately how much slack the tensioner takes out? Trying to reduce trips to advance

 

Guessing 1-2 "? Run rope/sting around the setup and should get you close

 

Yeah. Was going to get a ruff measurement and go get a belt 3", 2", and 1" shorter and return what I don't need.

 

did you go to a 6 rib pulley? Do you know the new pulley diameter?

 

Yes, running a 6 rib belt and 6 rib pulley, diameter is a little over 5". Same setup Lane ran in the red truggy and D90.

 

The rover is 4.9 diameter with about 185 degrees of belt wrap. The stock length should be fine with that since you are talking about roughly 1/8" difference in length, so I'm guessing it moves the pulley out significantly from stock.

I can tell you that the length difference that the tensioner can reliably handle is less than the belt length difference for a 4.0 and 3.9 I had the wrong belt and it would work for a while and then eventually throw.

lengths are approx 89.125 and 88.75, so 1" or less would be ideal.

 

My setup moved the pump out a pretty good bit. Stock length won't even be close.

In the mock up stages on the parts truck before boxing it all in.

 

What fans are on the parts truck in that pic ?

 

oh wow, that is certainly a different approach than I've seen

Have you considered using a 93 dodge dakota pulley instead of whatever you've got? It has a 7 rib pulley and a later d2 belt may fit

Not sure if you've seen what I've got, but I put the drawings out there for a bracket and adapter to keep the stock length belt and hoses.

http://www.flemcodesign.com/saginawbracket.zip

had it on for about a year and a half with no regrets. Kind of gives it that buick engine look with my current distributor and also allows room to move the airbox over if you have a snorkel and dual batteries.




I'd also be concerned about belt squeel while turning with the AC on. you are losing quite a few degrees of belt engagement to the crank pulley and 1/7th the surface area

 

Yeah, I think I have your plates drawing saved. I just used a jeep adapter plate from PSC and modified it. It was super simple and Lane on pirate (mightymg) ran it on the red truggy and d90 on spider 9s with no issues. Only changes I made were boxing it in for more rigidity. Makes routing the lines super easy where it's at too. We will see how it works this weekend. I'm going to be running hoops for 14" coilovers in a few weeks so I'm going to be pushed for space. Hope it doesn't get in my way. Planning on a dry element cone filter off the maf run over the hoop to where the abs modulator is now sitting.

Tom, no clue what they are but they are in one of my box o Rover crap that needs to go!