A/C and power steering delete

[cblake4657]

I am putting a 2007 4.2L in a 1968 Chevy Sportvan. I do not need power steering or AC. It looks like it is pretty easy to delete the AC but I can't find any info on belt routing and tensioning to delete both AC and power steering.
Any info would be appreciated.

 

[TollKeeper]

Its going to come down to positioning. If you are using the OE style alternator, in its current location, your problem comes from the idler puller below the alternator. It now needs to be a tensioner, and its not notched in the back for that, and it doesnt give the water pump a lot of belt time traction.

From what I can see, it would be better to move the alternator to the AC compressor location, as that would give the most contact to all pulleys (Water pump, crank, alternator), while keeping all the pulleys turning in the correct way, and to figure out a way to mount a tensioner where the current idler pulley is.

It would then be the shape of a triangle, crank and alternator on the bottom, with the water pump being above them, centered.

 

[cblake4657]

I am short on space where the PS pump is.
I see Nivlac57 on YouTube is running without a PS pump... but he has not replied.

 

[TollKeeper]

What I suggested above does take out the PS pump. You will just have the crank, alternator, and water pump, with a Tensioner inbetween the alternator and water pump

 

[KEEBZ489]

Inline 6 Accessory drive brackets - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Inline 6 Accessory drive brackets The 1967 - 1972 Chevrolet & GMC Pickups Message Board

67-72chevytrucks.com

 

[gmcman]

Another option, why not leave everything in place and just remove the hoses? Maybe run a hose from the PS pump outlet to the return nipple. The A/C pulley will simply freewheel.

 

[Mooseman]

There is an A/C delete belt. @KEEBZ489 recently mentioned that he had a short A/C bypass belt. Maybe he'll post the part number?

 

[KEEBZ489]

to bypass the ac and idler pulley you need a 6K695 belt , but deleting the power steering is the problem

 

[KEEBZ489]

going to have to fabricate something far as i can tell to catch the belt in the power steering area. is it a space thing in the '68 ?

Chevy Six Cylinder Mounting Brackets

Chevy Six Cylinder Air Conditioning Compressor & Alternator Mounting Brackets

www.alangrovecomponents.com

 

[JayArr]

So when you delete the AC compressor you stop using that idler as well and you route the belt from the alternator directly to the fan pulley?

I'm not planning to do this but thought it might be a good idea to carry a belt that would allow this on the side of the road in case my compressor seized up.

For the OPs question: could you make a plate that bolts on in place of the PS pump and put an idler on it? You'd have to find a custom belt length but the space behind the plate where the pump was would be freed up and the idler wouldn't have to move.

 

[KEEBZ489]

I'm not planning to do this but thought it might be a good idea to carry a belt that would allow this on the side of the road in case my compressor seized up.

yeah , you bypass both

ITS AN EXCELLENT IDEA my bearing failed last year driving to work and i needed to get home, so i bypassed the compressor. i changed the pulley bearing and it lasted all summer , but just failed again , luckily i had the short belt on hand and wasnt stuck. ( if you do lose your belt from shredding , make sure nothing is behind the crank pulley !!!!! like me it will deamage the seal and youll be even worse off )

 

[cblake4657]

Good idea JayArr. I can make a bracket to hold an idler pulley, move it inward for clearance.
I don't have room for the power steering pump.

 

[TollKeeper]

Wouldnt this also work with a tensioner modification?

 

[JayArr]

That spins the fan in the opposite direction.

 

[Mektek]

Also not enough contact around the water pump. It takes a lot of power to spin both the fan and pump.

 

[TollKeeper]

That spins the fan in the opposite direction.

I think your incorrect, but if I am mistaken, than this solves that...


Or like my original idea of relocating the Alternator to the AC location with a tensioner relocation.

 

[KEEBZ489]

the water pump is a smooth pulley and does spin the other way, going over the top in your blue diagram would damage the belt grove i think.

the lower red would most likely work of the fab work can be done easy enough to move the alternator down.

i think moving the idler to the steering pump area is the best , but will need to measure for the correct belt