16 replies to this topic

[TerrA LX]

As Quages has kindly pointed out there are two holden V8 pumps, Pre 80's and post 80's, the later being slightly bigger to house the larger bearing for the thermo clutch fan.

Edited by TerrA LX, 12 February 2012 - 08:07 AM.

[76lxhatch]

The difference between the short and long is about 16-17mm so hopefully that's the actual difference you have. Otherwise it could be the wrong crank pulley or a combination of the two.

[Bernie]

Calvin .Off to the wreckers ,Take the hub with you .There are numerous driven pulleys that have different depths .Measure what you need and track one down ,Are you going to run a fan off it?If so go for a smaller diameter pulley .It will give you more fan speed .It will help your air flow at idle or low speeds which is handy .Will need to change the belt as well if you go that way.

Other option is to use a steering wheel puller and pull the water pump boss out until it lines up correctly .Just make sure that the driven hub and fan (if your using one )still locates on the shaft spigot as this helps keep the assembly central .

Bernie

Edited by Bernie, 13 February 2012 - 08:05 AM.

[Dr Terry]

To my eyes, the pump looks to be the correct length housing. The newer 'Blue Motor 'Jumbo Pump' will be much too long to overcome your problem.

The lower pulley also looks correct, so your issue could be one of 2 things.

1. The hub on the pump shaft has been pushed on too far (use a puller to bring it back).
2. The harmonic balancer is not all the way onto the crankshaft.

Going by the line-up of the alternator pulley, I would guess at fault no. 1

Dr Terry

[TerrA LX]

And the problem was?

[REDA9X]

I had these dramas 15 years ago with my SS. It kept pulling the guts out of the pumps once you gave it a decent rev. It turned out I was stupidly just buying cheap shit pumps and they didn't line up with the belts. During the process I bought 2 genuines Holden pumps, one with the smaller bearing and one with the larger bearings they fitted to the blue motors. The spacing was identical as I fitted both and only decided to go to the larger bearing after I fitted the large clutch fan. I ended up removing that later and fitting twin thermo fans.
The difference between the cheap shit brand and the holden brand was around 1/78 inch spacing, and for a while I fixed the problem by making a simple spacer up to go under the pulley. I still have it in the shed somewhere saw it the other day.

[a9x868]

I had these dramas 15 years ago with my SS. It kept pulling the guts out of the pumps once you gave it a decent rev. It turned out I was stupidly just buying cheap shit pumps and they didn't line up with the belts. During the process I bought 2 genuines Holden pumps, one with the smaller bearing and one with the larger bearings they fitted to the blue motors. The spacing was identical as I fitted both and only decided to go to the larger bearing after I fitted the large clutch fan. I ended up removing that later and fitting twin thermo fans.
The difference between the cheap shit brand and the holden brand was around 1/78 inch spacing, and for a while I fixed the problem by making a simple spacer up to go under the pulley. I still have it in the shed somewhere saw it the other day.

gee red what else have you got in that shed of yours?
you must have a fuc@#& huge shed?

[hanra]

Think twice about the Gilmer Drive..