Alternator Relocate while Keeping AC Compressor

marcabishop

marcabishop

Greenie N00B Member
With my previous JDM Sport log exhaust manifold, my EWG was mounted vertically and cleared my custom 3” vband downpipe. With my most recent purchase of a DTP Fab log exhaust manifold, my EWG now sits at a 45° angle, which is now in the path of my downpipe. As many of you know, running a log manifold will require you to have a custom downpipe fabricated. This also results in the downpipes position to be very close to the alternator, which mine was millimeters away from the hot wire.

To prevent issues with heat and shorting out the car, many people have heat wrapped their downpipe, or have done an alternator relocate to the AC compressor area. I would prefer to keep my AC, so I'm looking at alternative options. I know that I could have a new downpipe fabbed up for the alternators current location. To preserve the life of the alternator, I’m making the decision to relocate the alternator in addition to allow extra space for the downpipe for heat purposes.

I've stumbled upon a few threads stating a Mazda 5 alternator will work for the relocation project which is fine, but that leaves me to determine the AC portion. While I was looking for an alternator for a Mazda 5, a fellow Mz5 owner had mentioned to me that if I wanted to keep my AC that I should look at the Mazda 3 / Mazda 5 oil pans. Apparently they have the AC Compressor bolted up to it. After some quick searches, it does indeed appear that this is possible, and I’m willing to tackle this project.

Assumption Parts List:
  • Mazda 3 2.0L Oil Pan
  • Mazda 3 2.0L Oil Pickup Tube
  • Mazda 3 AC Compressor
  • Mazda 3 AC Lines
  • Mazda 3 AC Condenser
  • Mazda 5 Alternator
  • Unknown Serpentine Belt Size
I will fill in OEM part numbers soon for reference.

mazda-pic-2_orig.png
 
Last edited:
Tomas said:
Don't you need the compressor too? and why the condenser?
Click to expand...
I need to verify if the AC lines will bolt up to the same location on the Ms3 condenser, if they do then the condenser is fine to use and the lines are all I'll need.

I've also updated OP with the part you mentioned.. forgot to list the compressor. It appears to be more of a brick shape than the Ms3's barrel shape.
 
I've got all parts ordered, was just a little over $320 for everything, that's the lowest I could find everything for. I'm awaiting all parts to be delivered before I post any model #'s of parts so that others do not start the same project and end up with incorrect parts. I've also ordered an 04-09 Mazda 3 serp belt. Hopefully that works since not too much is changing in the belt configuration for all of these parts.

Will post more updates soon!
 
matt buchanan said:
So this is the same issue with a dtp supplied dp? And is so why has he not angled the ewg to fit better?
Click to expand...
This would not be an issue with a DTP supplied downpipe. My DP was a custom fab one with the "JDM Sport" ex Mani, where the ewg was angled straight down. I'd recommend a DTP DP with purchase of a DTP ex Mani for future buyers! That way it'll save you the headache I am going through lol... I'm primarily doing this project to get the alt away from the downpipe.
 
You must log in or register to reply here.
Back
Top