JRSC-AC dummy pulley available?
I have a JRSC m45 on my 95 Miata with AC and power steering. I want to remove the AC system to lighten the car. (90% of the time Miata is used for track days) I want to replace the AC with a dummy pulley. Is there such a thing? Thanks! Rod
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I'm not following why you think you need a "dummy pulley." Just remove the system and get a shorter belt.
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A friend had a 99 but his did not have AC. He cracked the head, 2x. I thought routing of the belt around the AC pulley would take some of the stress away? Maybe not?
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Power steering pump should go away if you are doing even 50% track days. I ditched the power steering and kept the A/C.
If you think it puts different stress on the brackets to have the A/C pulling on the belt in addition to the PS you are wrong. And the PS mounts to the block and not the head anyway. I just removed the bracket. Your buddy must have been overtightening the crap out of the belt tension. It just needs to be tight enough to not slip under a little bit of drag. The A/C drags more than the PS so it can be less tight without the A/C anyway. EDIT: For the PS removal I used a shorter belt and used a pair of washers between the compressor and the bracket to adjust tension. It was no big deal. |
Originally Posted by carazy
(Post 831065)
A friend had a 99 but his did not have AC. He cracked the head, 2x. I thought routing of the belt around the AC pulley would take some of the stress away? Maybe not?
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I think the head he is referring to is the blower head, not the cylinder head. I could see you cracking that if you went all angry monkey on the belt tension. IIRC the MP45s are really not supported all that well...
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i have two m45 supercharger dummy pulleys for A/C and P/S... PM me.
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