7100 on JD 4440 August 23, 2012 02:07AM
Can a guy make hole in block bigger while in tractor to put a p7100 on a 40 series crank driven oil pump block?
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Re: 7100 on JD 4440 August 23, 2012 03:44AM
Yes you can I had my block bored this spring. I know a JD4850 block is 3.750" and I bored my block to 4.200" Hope this helps Brandon
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Re: 7100 on JD 4440 August 23, 2012 04:26AM
How did u do it?
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Re: 7100 on JD 4440 August 23, 2012 05:25AM
Took the bare block and had the mechine shop mechine bore it!
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Re: 7100 on JD 4440 August 23, 2012 05:35AM
Sure wasnt in the tractor then like i asked.
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Re: 7100 on JD 4440 August 23, 2012 06:58AM
My bad did not read that part!
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Re: 7100 on JD 4440 August 23, 2012 07:11AM
Just have the pump shop machine the front hub of the pump down to the same diminsions of an a pump. The o-ring that seals will no longer work just use silicone instead. This is what I did becouse my engine was together also. And the cost was $150.00. It works great.
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Re: 7100 on JD 4440 August 23, 2012 12:37PM
That sure would be a lot easier. How long have you ran this way ? Is there much machined off ? Thanks
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Re: 7100 on JD 4440 August 23, 2012 03:10PM
u cant have a 7100 pump machined down to an A pump size. U can only machine it down to a 3000 p pump
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Re: 7100 on JD 4440 August 24, 2012 09:45AM
My bad our pump is a p-3000 not a 7100. Is there a differance in the hub from a p-3000 to a 7100.
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Re: 7100 on JD 4440 August 24, 2012 02:36PM
actually, no. A true P3000 uses the larger pilot diameter, and 30MM cam like a P7100. Standard old P pumps like on an 8640 ETC are not P3000's technically. People have started referring to all the standard P pumps as 3000 to differentiate them from the 7100, & 8500.
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