You are 100% right. I have bent a few of the bolts and the tensioner body itself has bent. Then the belt wants to start tracking outward and throws it. I think past 600 or so HP the engine raps up too quickly for the tensioner to handle. I ordered a stock foxbody alternator bracket and tensioner. I'm assuming it must fit or at least be very close. If you think about it, it has to line up to the crank pulley and it isn't uncommon for us to use the renegade blower crank pulley for a mustang and we don't have issues with alignment. Hopefully the fox tensioner is a little better.
from what I remember they do fit, only thing is with the difference in deck height of the two engines I don't believe the A/C compressor fits.
Good deal. I just want it to line up correctly to rest of accessories. The fox tensioner looks to be a little better design as well. We will see I guess. Tired of dealing with belt issues.
Yep I picked up a 200 amp 3g alternator for a foxbody. It basically puts the alternator in same spot as our stock one so no real change. The tensioner itself is a much better design and I don't forsee being able to actually hurt the tensioner now.
Stock size pulleys include the crank, A/C, and power steering. Using a foxbody water pump pulley and I believe the alternator pulley is 2" but I will need to verify that. Don't have a smog pump in place and the delete pulley I had for it sits crooked so I am completely bypassing that all together. Belt size is 91" I believe. I will verify that too because I bought like 6 to make sure I had the right one.
i have questions! what alternator P/n did you end up with (large frame 3g?,1-wire?)? Did you have to clearance the bracket to fit it? did you have to clock the case for the plug location?
I saw that bracket but decided on the foxbody one as it appeared a little different. I bet either would work, but in my head I figured a foxbody was designed to be more performance oriented and if something broke I could easily find a part at local parts store.
This is what I bought: 200A 3G Alternator (1619HO) built by PA Performance. I didn't have to do a single thing. Just install new bracket/tensioner with new alternator and plug everything back up. I swapped out the tensioner pulley with one of the billet ones I had already but that's not needed. I was tired of bending tensioner bolts.
Well it didn't affect me as I have the heater core bypassed and I re-routed those lines a while back. Think I have some pics on here somewhere with how I did them but I can get you some if you wanted. However I will say there is almost no difference in alternator location so a stock style set up should be just fine.
Indeed. I got the bracket, tensioner, and fasteners from them. However I decided to use PA performance for the alternator. I'm sure can get everything from LMR no problem.
