homemade gen 3 setup

Magnum PD · Sep 22, 2014

Might be hard to find.

JD3020 · Oct 5, 2014

Anything ever come of this? I've had a couple IH res's and a gear for years, then last winter i bought a Haldex pump. Come to find out the center hole on the gear is considerably larger than the pump shaft so i threw it all off to the side. I need to get it up and going.

Magnum PD · Oct 5, 2014

The gear hole should be smaller than the pump's shaft. ??

JD3020 · Oct 5, 2014

Thats what i thought as well, which makes me wonder if there were different gears/pumps offered from IH. I'll have to see if i have a pic of it somewhere.

Magnum PD · Oct 5, 2014

The pump is 3/4" I think and gear was 1/2". If my memory serves me right.

JD3020 · Oct 5, 2014

Pump is 3/4", can't find my gear but i wanna say it was 7/8".

Powerstroker7.3 · Oct 6, 2014

What do you have to do to modify the gear to fit the larger pump shaft

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DZL JIM · Oct 6, 2014

Powerstroker7.3 said:
What do you have to do to modify the gear to fit the larger pump shaft

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Machine ID, broach keyway, drill/tap set screws(s) to hold it to the pump shaft.

Powerstroker7.3 · Oct 6, 2014

Can that be done by anybody or are special tools and skills needed to do it

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DZL JIM · Oct 6, 2014

Powerstroker7.3 said:
Can that be done by anybody or are special tools and skills needed to do it

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Like anything else that depends on if you want it to last, or if you want to try and save a few pennies and rig it together.

Personally, I have had my machinist do it because it's cheaper in the end (not cheap to buy correct Broach for the keyway, and reamer for the shaft dia) and he can have it done before I can figure out how to set it up to get start.

B.A.D Performance · Oct 6, 2014

Yes have a machine shop modify your gear. Luckily im a machinist by trade and I did it my self. Machined it for a press fit. Broached for the larger key way and drilled and tapped for 1/8 in. Set screw. Then I had hard lines bent up at the hydraulic shop. Its amazing how simple it was to do and how cheap. I located all my parts in 3 days and got 400 bucks in the entire setup. That even includes a new resivoir gasket

Powerstroker7.3 · Oct 6, 2014

I have seen some people say they have used rubber hydraulic hose instead metal lines. Do you
Think these would work as well and would they be cost effective cause you would need some high pressure line

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B.A.D Performance · Oct 7, 2014

I would use hard lines. The radius is really tight. My hydraulic shop suggested hard lines. They were cheap

DZL JIM · Oct 7, 2014

B.A.D Performance said:
Yes have a machine shop modify your gear. Luckily im a machinist by trade and I did it my self. Machined it for a press fit. Broached for the larger key way and drilled and tapped for 1/8 in. Set screw. Then I had hard lines bent up at the hydraulic shop. Its amazing how simple it was to do and how cheap. I located all my parts in 3 days and got 400 bucks in the entire setup. That even includes a new resivoir gasket

Do you run a check valve?
Any idle issues or coming to idle from hard, high RPM pull?