flight_of_pain

I had tested this out by hand at the junkyard years ago and it seemed close, so I figured I might as well mock it up and take some pictures.

The alt is a cs130 105A from an 80s gm product with a v-belt pulley from an 80s subaru(same as the mazda pulley but 5/8 shaft).

On the front iron there are several sets of holes for studs, and the stock bracket bolts to the upper set. This was a little too high for my tastes, so i moved it down to the lower set (approx. 60mm). This necessitated re-drilling the forward hole in the bracket 60mm higher, the rearward hole just bolts up to the lower stud.

Here are some progress pics.

alt part #, also shows the extra nut/washer I used as a spacer during mockup.





At this point I imagine a person could us a short adjuster, or shorten the stock adjuster and it fits just fine, but it isn't nearly the sleek mount I was going for.



After a little trimming we get:



You can see the new front bolt hole located 60mm above the old hole, the rear hole just moves down onto the lower stud.



I then cut the bend off the stock adjuster, bent a new offset in the end, and tapped a hole in the bracket to bolt it on. This shows minimum and maximum adjustment.





The beltline is perfect (checked with a straightedge) with the alt mounted against the inside ear of the stock bracket.



Plug and block clearance shots:





Now that mockup looks good I am going to machine a spacer down for the extra space on the main alt bolt between the end of the cs130 mounting ear and the inside of the bracket, and shoot some paint on it. A 15370 belt fits very tight on the adjustment, and a 15375 fits in the middle of the adjustment.

Plenty of room for IC piping to come from a v-mount right to the TB

Isaac

t_g_farrell

iTrader: (1)

Watch out for clearance once the dizzy is installed. My Pineapple Racing side mount barely
clears the bolts on the bottom of the dizzy.

Siraniko

iTrader: (13)

I will let you in a week. Im also in the procee jof mocking taurus alternatir in my RX-3. Too mount is too much work as it wont clear the distrubutor. I have a pineapple side mount .

flight_of_pain

I never thought about the dizzy, this motor is getting a CAS and a megasquirt I will go drop a distributor into the cover and see if it clears for anyone thinking of doing this.


Isaac

flight_of_pain

Here is a 12a distributor dropped in, more than 1/8in of belt clearance. You could also grind down the head of that bolt/replace it with a shallow head bolt, for even more clearance. After looking at the dizzy again, a countersunk hole in the adjuster plate and a flat head machine screw to replace that bolt would give a ton of clearance.





Isaac

DivinDriver

iTrader: (15)

Good thing your instincts led you to using the lower studs.

flight_of_pain

Yeah I did all my mockup with a 2nd gen cas, which doesn't have those silly protuberances


Isaac