trying to run all my accessories on 1 belt....

[fa SHO]

i did a quick search and didnt find much outside of atx and mtx accessories being a bit different....

im swapping the sho into my 1991 mazda, and i got it all to fit in okay, but i dont have enough room in the engine bay to keep the power steering setup on the back of the block. i have a 3.0 liter mtx....

what i would like to do, is move the ps down to where the air conditioning used to be, and run a serpentine belt to control everything. even the tensioner for the water pump belt is in the way, so i need to pull all that and get it out of the way. so in order to do this, i'll need to somehow move the water pump pulley out about an inch, and then run custom sized belt for the water pump, ps, and alternator.....

has anyone done this before? is there different pulleys available i can find to make this happen? any info would be greatly appreciated right now. once i can get past this ill be ready to finish the swap

 

[jonheese]

Look at the ATX 1-belt serpentine system; it will most likely get you 90% to where you want to be.

 

[fa SHO]

alrighty...is it a matter of just swapping pulleys over, or do i need atx accessories/waterpump? if its just pulleys ill see if i can find someone parting out.....

 

[jonheese]

You will need an ATX water pump, but I believe the rest of the accessories can just get ATX pullies (keep in mind that the ATX system is a 6-rib, compared to the 4-rib belt on the MTX system). You'll need:

ATX P/S pulley
ATX water pump & pulley
ATX idler & tensioner
ATX crank pulley
ATX alt. pulley
(ATX A/C pulley -- it sounds like you've ditched the A/C)

And I think you either need to swap in the ATX timing belt system & covers (which I think will require drilling and tapping a hole for the hydraulic tensioner), or you might be able to get away with running no timing belt covers over the MTX timing belt system. Not sure about that. Someone else will chime in.

I assume you're doing custom motor mounts, but ordinarily you'll need the ATX mount brackets and mounts. You'll have to see how that goes, or compare an intact MTX vs. ATX to see what will be required for your specific application.

It's not a quick and easy conversion. Not for the faint of heart.

 

[jonheese]

Well, well, well... In my daily Craigslist cruising, I see you're now just going to dump the 3.0L engine altogether?

A little friendly advice: You might have trouble selling it at all, let alone getting $300 for it. A lot of 3.0Ls are about as good as boat anchors nowadays. Good luck with it though!

 

[fa SHO]

funny you found that. idk it just sounds like ill be better off with the 3.2 liter anyway. i dont have a ton of time, and i do plan on boosting it later on down the road. so id be willing to dump it for best offer if i can. i originally got the complete motor/ecu and wiring harness locally for 500$......which didnt sound terrible at the time. but if i can get some of the money back thatd def be nice.

appreciate it

 

[jonheese]

I'm curious: Do you have the motor mount plan worked out yet? Are you using the Mazda subframe? Got any pics?

 

[91PDXmocha]

Sounds like alot of hot air . If I where you I'd be alot more worried about getting ANY Sho motor mounted in your " project " and that's only the start . you said you have it mounted already or figured out ? Pics ?

 

[firebat45]

I'm having trouble picturing why you have such clearance problems on the passenger side of the car, but loads of room over on the drivers' side to put all the accessories. Is this a RHD Miata?

If I was you, I'd run either manual steering, or adapt an S2000 electric rack, or run an MR2 electric PS pump.

 

[jonheese]

I was under the impression that it's a FWD swap, and the clearance problem is in the rear.

I think it's an MX6, IIRC.

 

[fa SHO]

no pictures yet of it mounted because i keep having to pull it out. its going into my 91 mx6. the mx6 shares the probe chassis and the probe comes with a vulcan 3.0. it has the same gearbox as the stock mx6 f2t, with the exception of the bell housing being different. so i have the vulcan tranny which bolts up to the sho with a vulcan clutch disc. and both of my main motor mounts are on the tranny, and one top mount on the driver side tranny side. ill have to make 1 custom mount on the passenger side but it shouldnt be too terrible...

the power steering rack and lines however are right where the power steering assembly is on the sho. which is why im running into issues. shouldnt be a big deal with a 3.2 auto though

 

[firebat45]

Sorry, I saw Mazda and assumed Miata. Makes more sense now why it's not fitting. An ATX setup still has the PS in the same location, it won't help you at all. You'll either need to relocate it to the AC location or figure something else out. I still favor the MR2 PS pump, it adds a bit of HP as well as simplifying the belt setup on the car.

 

[jonheese]

Sorry, I saw Mazda and assumed Miata. Makes more sense now why it's not fitting. An ATX setup still has the PS in the same location, it won't help you at all. You'll either need to relocate it to the AC location or figure something else out. I still favor the MR2 PS pump, it adds a bit of HP as well as simplifying the belt setup on the car.

Heh, take a deep breath, read the thread again.

It sounds like he's already committed to moving the P/S pump to the A/C location. He just wanted a single belt serpentine system, and that's why we're discussing the ATX system.

But, something else occurs to me, fa SHO: You say that the MTX belt tensioner is in the way... It's been a while since I've taken a close look at the ATX tensioner-- are you sure it will give you the clearance you need?

 

[fa SHO]

im not positive it will all work until i can have the stuff in front of me. i want to use a single belt and the single front tensioner if i can. im curious what if i just ran a 4 rib belt and the atx water pump, would it line up with the crank pulley?

 

[jonheese]

im not positive it will all work until i can have the stuff in front of me. i want to use a single belt and the single front tensioner if i can. im curious what if i just ran a 4 rib belt and the atx water pump, would it line up with the crank pulley?

I'm a little confused by your question... Do you mean with the MTX belt system? Why would you use the ATX water pump? How would that solve the power steering issue? Can you be more specific about the hypothetical setup you're describing?

 

[fa SHO]

alright.....the mtx water pump lines up with the inside of the mtx crank pulley and runs on the same belt as the ps.

so im thinking that if the atx one sticks out further, then i could try to tie it into the outside belt that originally goes with the ac and alternator. i might be way off here, but i hope that makes more sense

 

[Phoenix]

alright.....the mtx water pump lines up with the inside of the mtx crank pulley and runs on the same belt as the ps.

so im thinking that if the atx one sticks out further, then i could try to tie it into the outside belt that originally goes with the ac and alternator. i might be way off here, but i hope that makes more sense

This is the ATX single belt setup , posted a picture , might help you figure it out. A/C deleted.

 

[jonheese]

So you want to basically change the MTX belt system from:

1 belt running W/P & P/S, and
1 belt running A/C & alt

To:

1 belt running ATX W/P, P/S (in original A/C location) & alt.?

It might be possible, but it's probably not just going to line up perfectly without any modification.

Honestly, you need to find a local ATX car and take some careful measurements.

 

[fa SHO]

appreciate the help guys. i will check into it more and let you know what i come up with

 

[zach]

Why not ditch P/S altogether? I've driven my mx6 for years without P/S and never had an issue. This is with 18*8.5 wheels and the F2T with Holset HE351 in the nose.