*@!!*%^&@#!! water pump

[richards47deluxe]

so i changed the water pump out today. put everything back together and it started leaking at top where pump meets the block. Any ideas?? cleaned all surfaces, glued gasket to water pump, applies a thin film of silicone between pump and block, put silicone on bolts and still leaks. used air to blow off water and it is definitely between block and water pump. so what's the scoop??

[Greenbomb]

Is there any way the bolts are bottoming out before they get tight enough?

[jd52cranbrook]

I see you did seal the bolts, my bad.

I believe there are two types of backing plate for these. One has a hole for a by-pass I believe. If it is different from your original you may have to swap plates.

Edited October 11, 2010 by jd52cranbrook

[richards47deluxe]

Good thought on the bypass hole. with the cap off, there should be no pressure but i did notice a steady stream of water. gonna pull tomorrow morning and compare. wondering if i can get another gasket local.

[jd52cranbrook]

If not, I think you can put some sealant on there and let it get tacky or a bit rubbery before you tighten the plate bolts up snug.

[richards47deluxe]

thanks JD. will try that.

[jd52cranbrook]

YW,, did you hook up with Vargas Upholstery?

[richards47deluxe]

I did JD. He was going on vacation. I gave him my number and he was going to call when he got back. Thanks for the lead.

[oldcarlover]

Definetely use sealant on bolts but not on back of pump or on block. If you glue the gasket to the back of pump and let set, you should be ok.

Also don't overtighten.

[richards47deluxe]

I think what i did was tighten the middle bolt first then the 2 end ones. re-did the installation now there is a very small leak from one of the backing plate bolts. going to drain some water, back out that bolt. apply some silicone and hopefully that will stop it. At least now I can remove the radiator and water pump blindfolded now.

[Tom Skinner]

Richard.

There is a Gasket between the backing Plate and Pump that needs gasket sealant also - do both sides - then bolt it to the pump. Then butter up the gasket between the Pump and Block and then bolt to the Block.

That Backing Plate needs Gasket Sealer on the Gasket between it and the Pump. I first put a Water Pump on a Flat Head back in the mid 70's and didn't seal that "inbetween" Gasket and then learned it must be done also.

Good Luck! You can make your own gaskets from a roll of Water Pump Gasket Material with Sicsors and a Hole Punch real easy.

Tom

[richards47deluxe]

Thanks Tom. Stock sales just went up on gasket materials!!

by low sell high......

[mackster]

Thanks Tom. Stock sales just went up on gasket materials!!

by low sell high......

this made me laugh stock tips on the forum. priceless! hows that pump coming along?

[richards47deluxe]

pump is fine. now i need an intake and exhaust gasket set. any ideas where i can buy local, before i go loco looking for them??

Edited October 14, 2010 by richards47deluxe
left out word

[richards47deluxe]

Thanks alot!!! made my day.