Thread: Airconditioning on 4bd1 Isuzu LR

You can do either I have been told. A bolt on to the existing one would be easier. I asked a local isuzu wrecker who had them.

Peter.

I found a suitable bolt on one at the local wrecker - can't remember what it came off, as it was about twelve years ago, but went to the wrecker armed with a tracing of the tapped holes in the pulley and had no trouble finding one.

My compressor is on a home made bracket to line up with this pulley above the alternator. When making a bracket for this engine it needs to be very strong and rigid to cope with the vibration.

John

naff that bolt on pully of and spent the time looking for a genuine double pully...

you dont want to know what happens when the shear loading of the compressor cutting in at full RPM loosens then shears said bolts....

I havent seen it happen on an aircon pully but I have seen it happen on a genset with a compressor bolted off the crank...

Luckily that was air cooled and the pully only fractured the fuel tank.

My 4BD1-T came from an Isuzu truck and was factory fitted with air. The drive pulley bolts to the front of the normal crankshaft pulley and the bracket for the compressor bolts to the lower left side of the engine block.

The compressor and bracket are not mounted at the moment, but if you like I can take some pics of the bracket and drive pulley.

Yep the bolt on pulley from an Isuzu wrecker is fine as long as you use quality grade 8 bolts to secure it. You wont shear it off turning the compressor on & off.

I used a factory mounting kit from the wreckers and it fit snugly into a classic Range Rover engine bay. Just make sure you get rid of the plastic idler pulley with the non changeable bearing, and replace it with the steel unit with the changeable bearing. Repco sell them no worries.

Justin

Thanks for everyones input, will take myself to an Isuzu wreckers and look for the pulley and bracket for compressor.

What air compressor fits onto the bracket or can I use the Defender air compressor unit and feed it into an underdash unit from a defender wreck.
Thanks again......David

Originally Posted by defenderbilby

Thanks for everyones input, will take myself to an Isuzu wreckers and look for the pulley and bracket for compressor.

What air compressor fits onto the bracket or can I use the Defender air compressor unit and feed it into an underdash unit from a defender wreck.
Thanks again......David

For wreckers, try http://www.nationaltruckspares.com.au/

Mine had a Sanden style compressor - probably a Nippondenso, but I would have to go and check.

Originally Posted by defenderbilby

Thanks for everyones input, will take myself to an Isuzu wreckers and look for the pulley and bracket for compressor.

What air compressor fits onto the bracket or can I use the Defender air compressor unit and feed it into an underdash unit from a defender wreck.
Thanks again......David

Give Peter from Range Parts a call on 02 9896 2355, he had genuine Defender air con kits for sale for around the $600 mark from memory. I am sure it included all the in car bits you need????

Tell him Justin told about them.