8ba water pump bolt sizes?

[Flat-Foot]

Can anyone tell me the bolt sizes for water pumps on an 8ba? I am using 8rt pumps. I found the sizes for the 59ab but I believe they are different.

Trying to avoid having to order a bolt kit and pay shipping.

THANKS!

 

[19Fordy]

The water pump to cylinder head hex bolts for the 1951 Mercury are 3/8-16 x 1 1/16
and 3/8-16 x 1 7/8. It's the same block as the 8BA so I would think the bolts are the same. Use a stainless bolt and stainless washer for the bolt that goes inside the water pump and do not over tighten. I don't know if you can buy bolts exactly that length, but you can always cut a longer bolt shorter as needed. The Merc Manual says to torque the factory steel bolts to 23-28 foot pounds. I tighten the stainless steel bolts just so they are very snug without forcing them. Use Anti_Seize Compound on all the bolts.

 

[G.M.]

Measure the depth of the threaded hole. If I recall the 59A bolts are 7/8" long, people buy 1" bolts and sometimes they bottom out in the hole and don't squeeze the gasket and leak. The parts book usually gives the bolts size and length. G.M.

 

[Flat-Foot]

Thanks for the responses guys. I appreciate it. I figured I will try and source them locally before paying shipping

 

[V8COOPMAN]

Jim Pullen...Do you possibly have a better picture of that FAN SUPPORT thingie, and a couple of details, maybe? Looks like maybe something you dreamed-up that may work on a '36 I know of with an 8BA. DD