Water pump questions

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funkaholik
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Water pump questions

Post by funkaholik » Thu May 16, 2019 8:21 am

I looked in the tech wiki, but couldn't find these answers, so...

Late style R16 water pumps are freaking expensive. Mine is so corroded from sitting 20 years that I don't think its rebuildable. The outlets are literally crumbling away.

I notice that H20 water pumps are around $30. Are there any models of H20 pumps that will work on a late R16 with the spacer? Is there a reason not to use them?

Next issue: the 2 studs in the front of the block that the pump & spacer slide onto are so corroded that they are falling apart. One is M10 and the other is M8. Is there a source for a replacement for these? Stainless would be awesome!

Thanks for any advice / info.
Erik Miller
Concord, CA
1970 Datsun SPL311-29945, owned since '94
1970 Datsun SPL311-29524, rusty parts car
1967 Mustang, 428, 5 speed
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Linda
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Re: Water pump questions

Post by Linda » Thu May 16, 2019 8:54 am

Metric Specialties, check website, has all metric fasteners. Various references to it in the archives.
Linda
68 1600
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Tech Wiki->Parts->Parts Interchange
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funkaholik
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Re: Water pump questions

Post by funkaholik » Thu May 16, 2019 9:47 am

Thanks, Linda!
Erik Miller
Concord, CA
1970 Datsun SPL311-29945, owned since '94
1970 Datsun SPL311-29524, rusty parts car
1967 Mustang, 428, 5 speed
1969 Camaro convertible, 327, auto
1981 VW Rabbit Truck, 1.6 turbo diesel
...Oh, and a daily driver.

greydog
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Re: Water pump questions

Post by greydog » Thu May 16, 2019 9:56 am

McMaster Carr is a good source for all sorts of fasteners (and a whole lot of other stuff too).
Dan
.68 SRL311 aka "Skortch". On the road again.
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JT68
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Re: Water pump questions

Post by JT68 » Thu May 16, 2019 10:22 am

I think you will find the H20 pump is incorrect in almost every way. Fan, pulley, belt offset everything. Ebay and some vendors will sell you a pump that only creates problems. The 68-70 pump is more expensive because it actually fits! You will want new studs. that is a good plan.
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Re: Water pump questions

Post by JT68 » Thu May 16, 2019 1:36 pm

We actually rebuild them in house - the core is not a big deal. PM or email, I'm sure we can fix you up.
JT/LT
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tjp
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Re: Water pump questions

Post by tjp » Thu May 16, 2019 8:54 pm

Make sure you use a crap load of anti-seize when you install your new studs. I believe coating them completely is recommended. Someone please correct me if this is inaccurate.
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mraitch
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Re: Water pump questions

Post by mraitch » Thu May 16, 2019 8:59 pm

+1 oi the coating - especially since one stud goes straight into water channel. Same with thermo housing - many have been destroyed.

I remember on Linda's 1600 some years ago, when we had to destroy the pump to get it off. Impact drivers, compressded air chisels. Not a pretty sight.
Peter Harrison
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Re: Water pump questions

Post by JT68 » Fri May 17, 2019 6:40 am

tjp wrote:
Thu May 16, 2019 8:54 pm
Make sure you use a crap load of anti-seize when you install your new studs. I believe coating them completely is recommended. Someone please correct me if this is inaccurate.
+2 Anti-seize is your friend, it helps tremendously the next time around. Also good on the little 6mm screws on the back of the pumps-a very thin coat is all you need.
JT/LT
Datsunrestorationproducts.com
The very finest parts for your 311!