JustJeff

iTrader: (13)

Does someone have pics of both Sanden and Nippon A/C brackets? Are they different enough that they can be distinguished from each other by pics?

Rob XX 7

iTrader: (8)

I was not aware there were different brackets?

JustJeff

iTrader: (13)

Yeah they are different, the bolts connecting the bracket to the front iron are the same, but the bolts connecting the compressor to the bracket and the hoses connectors are different.

Here's a related thread
https://www.rx7club.com/showthread.p...+a%2Fc+bracket

What I'd like to know is if those differences in the compressor bolt pattern is noticeable? Can you visual inspect and tell or are the differences minute and you actually have to measure?

Rob XX 7

iTrader: (8)

funny he mentions he got a AC only bracket, that is what I have in my car, and 3 different compressors all mated right up, but of course I chose to use something different anyhow and had to get the bracket customized

are you just looking to get a AC only bracket?

JustJeff

iTrader: (13)

Yeah, thinking about doing TitaniumTT's mod to my P/S rack and get rid of as much clutter on the engine as possible.

Were your 3 compressors a mix of Sanden and Nippon? If that's the case then perhaps there was one bracket made for Sanden only and others that fit both Sanden and Nippon?

Rob XX 7

iTrader: (8)

ideally you would find a picture of each compressor, I always thought the difference was the lines, not the mounting.

JustJeff

iTrader: (13)

I bought an A/C only bracket today off Ebay Once it arrives I'll find out if either of my compressors fit.

I've got the day off tomorrow, I'll try and get some pics of my compressors and and my P/S-A/C brackets and post them.

Once the A/C only bracket arrives I'll get some pics of that posted

j9fd3s

iTrader: (3)

i looked up the A/C brackets in the parts fische, and am confused. i looked it up in s4 and s5, and they list the same 3.

they have an A/C only bracket. which is used on s4 t2's which have nd systems, and NA's which don't...

and 2 a/c p/s brackets. the difference APPEARS to be the p/s idler pulley.

the A/C for these cars are actually in a different paper catalog though, so this could be totally wrong

JustJeff

iTrader: (13)

Here's the pics I have

It turns out that I have both Sanden and Nippon parts and there is a difference in the brackets.
First is the Nippon bracket


Top/rear has only one threaded hole


And both brackets have two holes bored for mounting bolts, but the Nippon bracket is only threaded on the holes further back


Sanden bracket
Notice it has two holes bored on the top rear mounting




Notice on the Sanden the front holes are threaded


The thread pitch is the same regardless of the bracket so the mounting bolts are universal, but the Sanden compressor on the Nippon bracket has the wheel for the belt set too far back.

I'd assume an easy fix to have them interchangeable would be have the bored holes threaded. Putting a Sanden on a Nippon bracket would have you only using 3 of the 4 mounting bolts. I doubt that would matter, but I'm sure others will chime in and correct me if it would.

Oh and a footnote. I could not find my other compressor to verify that it's Nippon, but it would have to be seeing how the Sanden would not fit on the bracket the missing compressor came off of.

lastphaseofthis

iTrader: (8)

its an m6x1.0 thread, 10mm bolt head.
We've rethreaded more then a few brackets to fix a/c systems when we could only get, or already had, the diffrent a/c compressors. BUT you have to space out the idler pulley to make it line up.

EXAMPLE:
i'm running an a/c only braket that was made for sanden, with a nippon d compressor on my 10th AE.

JustJeff

iTrader: (13)

To space the idler pulley did you simply use washers between the pulley and the bracket?

KompressorLOgic

iTrader: (6)

i would assume the idler pully stays in the same place and the compressor it self it just different lengths with the pully ending up in the same place. otherwise if u moved the idler forward or back it would be crooked with the blocks front pulleys

JustJeff

iTrader: (13)

Good point! I've never messed with A/C compressor wheels but they look awfully fixed to the unit.

Rob XX 7

iTrader: (8)

I had to get mine modified to get the spacing right and to use the tensioner I wanted to use, it is much easier to accomplish all of this with the engine out of the car.

JustJeff

iTrader: (13)

Bracket arrived today. It only has one set of holes bored and threaded. I'm guessing that it's Nippon...and Murphy's Law has it that my Nippon compressor is the one I can't find and might have ended up in the trash.

Rob, what pulleys are you using? I'd love to loose my double alt belt pulley. I'm fed up trying to get both belts tensioned correctly. I've tried like 4-5 different sets of belts and can never get them right. If one is too tight the other is too loose.

Rob XX 7

iTrader: (8)

pulleys are a combo of cosmo and FD

JustJeff

iTrader: (13)

^ I thought putting FD pulleys on 13B engines caused timing problems? Or maybe thats not even right. I remember reading that you couldn't simply slap FD serpentine pulleys on. Mind PMing me the details of on how you did yours?

Rob XX 7

iTrader: (8)

the FD pulleys are the alternator, AC tensioner, and AC compressor

JustJeff

iTrader: (13)

Just found your thread about Cosmo pulleys. From reading it, you couldn't put the S5 Vbelt pulley and compressor on. You had an inch of space between the main pulley and the compressor? That's why you went with the FD compressor?

Have you got any pics showing the mods you needed to make to the bracket for the FD compressor and tensioner?

MaczPayne

iTrader: (5)

Jeff, I'm running a 3L220 belt around just the main pulley and waterpump on my car and it's going on 4 years with no issues. This lets me run just one belt around the alternator.


:Not my car, but this is it:

JustJeff

iTrader: (13)

^ Thanks for the heads up. Once my rebuild is done I was considering going with a similar setup. I was going to use the belt Pineapple Racing sells.

I started the thread trying to figure out my options with P/S removal. But I like Rob's setup and may reproduce what he did.

Rob XX 7

iTrader: (8)

I did not WANT any v-belts that is why I went with this set up
basically the bracket had to have material welded onto it so that new holes could be tapped

if you used the existing holes the spacing was way off

JustJeff

iTrader: (13)

I hate the dual belt alt. I've tried numerous combinations of belts, even tried on a size shorter. The two belts are never right. Either one is too tight and whines or the other is too loose and slips. I don't mind having v belt a/c, but would love to not have to worry about balancing two belts or a yoohoo belt.

I think I already know the answer but I'll ask anyway. Is it possible to stack a v belt pulley on the end of the cosmo main pulley to use on an FC compressor? From the looks of it I doubt the wider ribbed belt for the alt will allow the v belt for the a/c to line up.

Rob XX 7

iTrader: (8)

I dont remember, but a standard cosmo pulley set up uses v-belt for ac compressor, so if you get a cosmo set up that is what you get.
If you find early photos of my engine swap I have the v pulleys in front of the ribbed pulleys

but I think the problem was still the spacing, I do not know if there is a bolt on conversion to have ribbed pulleys and retain ac or ps, most get rid of it which greatly simplifies things

and when we set the pulleys we lined the stock timing marks up using stock pulleys then put the ribbed, and it all lined up.

JustJeff

iTrader: (13)

Thanks for the feedback. I'm not sure what I'll end up doing. It will have alot to do with timing. If I don't finish my rebuild till it's cooled off then I'll probably just leave a/c and p/s off till next summer