I'm looking for an ac belt tensioner for a dealer installed unit on a 72 240z. Does anyone have/or know where I can find one? If someone can post a picture of theirs that would help me a lot. Thanks.

Is your's mounted in front of the valve cover, compressor on passenger's side firewall by the fuel pump? usually a York brand. Here's a "kinda" picture. It's the very top pulley. I'm at work now so I can't get one of my other '72's which is mounted on the drivers side of the motor. I'll put you up those later today if someone hasn't already.

here's something with Napa part numbers, http://www.classiczcars.com/forums/engine-drivetrain-s30/20142-c-idler-pulley-rebuild.html

and google.com, https://www.google.com/search?q=240z+a/c+pulley&rlz=1C1SNNT_enUS361US361&espv=2&source=lnms&tbm=isch&sa=X&ei=rAG8U7K2O-a48gHf4YEI&ved=0CAgQ_AUoAw&biw=1093&bih=508#imgdii=_

Here's those pictures but I forgot that I'd taken the belt and pulley of the other car so I've taken one of a 280's pulley. I boxed all my Z parts up this past weekend and put them in storage but I'm pretty sure the 280's close enough to the 240's set up. The last one is my 280 with no belt, silver. First 3 are the York set up, the pulley is under the top radiator hose where it connects to the thermostat housing.

Well the pictures shifted, the drivers side compressor on the 280 has no belt, the rest are the one on the passenger's side fire wall.

One last thing, the top mounted pulley is adjusted by 1 big nut looking thing. The lower mounted pulley is adjusted with a threaded rod going through the mount.

Edited July 8, 201410 yr by siteunseen

Is your's mounted in front of the valve cover, compressor on passenger's side firewall by the fuel pump? usually a York brand. Here's a "kinda" picture. It's the very top pulley. I'm at work now so I can't get one of my other '72's which is mounted on the drivers side of the motor. I'll put you up those later today if someone hasn't already.

here's something with Napa part numbers, http://www.classiczcars.com/forums/engine-drivetrain-s30/20142-c-idler-pulley-rebuild.html

and google.com, https://www.google.com/search?q=240z+a/c+pulley&rlz=1C1SNNT_enUS361US361&espv=2&source=lnms&tbm=isch&sa=X&ei=rAG8U7K2O-a48gHf4YEI&ved=0CAgQ_AUoAw&biw=1093&bih=508#imgdii=_

Here's those pictures but I forgot that I'd taken the belt and pulley of the other car so I've taken one of a 280's pulley. I boxed all my Z parts up this past weekend and put them in storage but I'm pretty sure the 280's close enough to the 240's set up. The last one is my 280 with no belt, silver. First 3 are the York set up, the pulley is under the top radiator hose where it connects to the thermostat housing.

Well the pictures shifted, the drivers side compressor on the 280 has no belt, the rest are the one on the passenger's side fire wall.

One last thing, the top mounted pulley is adjusted by 1 big nut looking thing. The lower mounted pulley is adjusted with a threaded rod going through the mount.

Do you have a part # for the York brand by any chance? The compressor is located on the passengers side like the 1st picture. The bracket is there but the whole pulley set up is missing.

It has a info plate on the compressor I can get a picture of, the pulley I can get you the measurements later today. It's probably close to that Napa one in that link.

I measured and converted to mm the size of the pulley, it's close to the Napa one so I think that would work. I would have to remove mine to get the bearing hole size and I'm sorry but I'm not doing that, that thing's in a tight spot. The fan and the top radiator hose would have to come off. Anyway here's what I have, width 13/16's= 20.6 mm, overall outside diameter 3 11/16=93.6625mm. Napa one is 19mm by 94mm.

It looks like there is just a pulley in the 1st and 2nd pictures. No? So there is no tensioner on the 240 like on the 280 and its just a pulley bolted to a bracket?

Is your's mounted in front of the valve cover, compressor on passenger's side firewall by the fuel pump? usually a York brand. Here's a "kinda" picture. It's the very top pulley. I'm at work now so I can't get one of my other '72's which is mounted on the drivers side of the motor. I'll put you up those later today if someone hasn't already.

here's something with Napa part numbers, http://www.classiczcars.com/forums/engine-drivetrain-s30/20142-c-idler-pulley-rebuild.html

and google.com, https://www.google.com/search?q=240z+a/c+pulley&rlz=1C1SNNT_enUS361US361&espv=2&source=lnms&tbm=isch&sa=X&ei=rAG8U7K2O-a48gHf4YEI&ved=0CAgQ_AUoAw&biw=1093&bih=508#imgdii=_

Here's those pictures but I forgot that I'd taken the belt and pulley of the other car so I've taken one of a 280's pulley. I boxed all my Z parts up this past weekend and put them in storage but I'm pretty sure the 280's close enough to the 240's set up. The last one is my 280 with no belt, silver. First 3 are the York set up, the pulley is under the top radiator hose where it connects to the thermostat housing.

Well the pictures shifted, the drivers side compressor on the 280 has no belt, the rest are the one on the passenger's side fire wall.

One last thing, the top mounted pulley is adjusted by 1 big nut looking thing. The lower mounted pulley is adjusted with a threaded rod going through the mount.

Edited July 13, 201410 yr by Rif

It looks like there is just a pulley in the 1st and 2nd pictures. No? So there is no tensioner on the 240 like on the 280 and its just a pulley bolted to a bracket?

That's exactly right. 240 adjustment is by turning the backside bolt, it's big; Crescent wrench, the 280 has the vertical bolt for adjusting tension, 12mm I think but it could be a 14mm.

240 top mounted pulley

280 lower drivers side