water pump bypass tube

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water pump bypass tube

Post  doughbro on July 22nd 2017, 7:18 pm

I am in the final stages of my 460 build. The water pump that I bought does not have the tube for the bypass in the pump, just a hole for it. The only fitting that I could find for it is 5/8" diameter. The hole is about .585, the tube is .625. Before I crack the new pump trying to drive the tube into it, any ideas on how to proceed?

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Re: water pump bypass tube

Post  rmcomprandy on July 22nd 2017, 8:00 pm

doughbro wrote:I am in the final stages of my 460 build. The water pump that I bought does not have the tube for the bypass in the pump, just a hole for it. The only fitting that I could find for it is 5/8" diameter. The hole is about .585, the tube is .625. Before I crack the new pump trying to drive the tube into it, any ideas on how to proceed?

Sounds as if that hole was supposed to be tapped to a 3/8 NPT pipe thread but, somehow that operation was deleted along the line.

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water pump bypass tube

Post  doughbro on July 22nd 2017, 10:10 pm

Hmmm. I think that they are usually pressed in, but your idea might be the answer. The dimensions are close enough to try threading the hole, even if they aren't perfect threads, some pipe sealer will fix that. Thanks for your suggestion.

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Re: water pump bypass tube

Post  jasonf on July 23rd 2017, 9:42 am

doughbro wrote:Hmmm. I think that they are usually pressed in, but your idea might be the answer. The dimensions are close enough to try threading the hole, even if they aren't perfect threads, some pipe sealer will fix that.  Thanks for your suggestion.

Some of the aftermarket ones are threaded.
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water pump bypass tube

Post  doughbro on July 24th 2017, 10:40 am

3/8" pipe tap worked like a charm. Thank you for the help.

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