Help with a measurement

[rockfla]

Anyone have a 21 stud water outlet gasket you could give me two quick measurements off of so I can get two blank off plates cut?? I need bolt center to bolt center And width and height measurement’s. Thanks In advance!!

[36rgtop]

Originally Posted by rockfla

Anyone have a 21 stud water outlet gasket you could give me two quick measurements off of so I can get two blank off plates cut?? I need bolt center to bolt center And width and height measurement’s. Thanks In advance!!

Early or late 21 stud ?

[JM 35 Sedan]

Originally Posted by rockfla

Anyone have a 21 stud water outlet gasket you could give me two quick measurements off of so I can get two blank off plates cut?? I need bolt center to bolt center And width and height measurement’s. Thanks In advance!!

For which year/model 21 stud engine?

[rockfla]

Originally Posted by 36rgtop

Early or late 21 stud ?

Originally Posted by JM 35 Sedan

For which year/model 21 stud engine?

Both, I am making Blank off plates for pressure testing SO I would need both!!! If possible!! Thanks!!!

[Flathead Fever]

We used to make gaskets at work. Just lay it over the piece and take the round end of a small ballpeen hammer and tap over the bolt holes and it cuts them out like a hole punch. Same with the impeller hole and around the outside edge. That's how we kept equipment in service when there were no gaskets available. You can even use Gasgacinch to hold the gasket in place, it will let you peel it off when you're done.

[Zeke3]

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You are asking about the dimensions for the water inlets on the early 21 stud engine aren't you? I am sorry, I can't help with those dimensions. My 1937 21 stud engine has water pumps on the front, so the block off plate would have to be the shape of a water pump gasket without the big holes for the water inlet and the impeller.

[rockfla]

Originally Posted by Zeke3

You are asking about the dimensions for the water inlets on the early 21 stud engine aren't you? I am sorry, I can't help with those dimensions. My 1937 21 stud engine has water pumps on the front, so the block off plate would have to be the shape of a water pump gasket without the big holes for the water inlet and the impeller.

Zeke3
Correct, BUT would like the BOTH early and late so I will have both blocks covered as I need it for 32,35 & 37 personally and will be covered for any friend who needs to use them in the future. And correct NO large center hole, just the bolt centers and a relative OD to cover the hole and bolt circle

[Mart]

37 (if late) would be the same as 59A if it helps at all.

[DavidG]

Robert,


For '32-'36 block-off plates picture an elongated diamond shape 2 1/2" wide by 4" tall with the two holes for the 3/8" bolts 2 7/8" apart on center. Post '36 block openings are larger, but I've not one handy to measure; sorry.

[rockfla]

Originally Posted by DavidG

Robert,


For '32-'36 block-off plates picture an elongated diamond shape 2 1/2" wide by 4" tall with the two holes for the 3/8" bolts 2 7/8" apart on center. Post '36 block openings are are larger, but I've not one handy to measure; sorry.

Thank you very much David, that is exactly what I was looking for, now for the 37 block???

[DavidG]

Robert,


In case you do not get a better answer, here's a scan of a '37 + water pump gasket. The large opening hole is 2 7/8" in diameter. The two 3/8" bolt holes nearly, but not quite, opposite one another are 4 7/8" apart on center.

[KiWinUS]

Robert you could use the factory block offs for the 37 blocks. I have extras if you need a set.

[Terry,OH]

I also have an extra pair of block off plates.

[rockfla]

Originally Posted by KiWinUS

Robert you could use the factory block offs for the 37 blocks. I have extras if you need a set.

Originally Posted by Terry,OH

I also have an extra pair of block off plates.

That would be great to have, I will take a set from one of you guys......PM me a let me know what you want for your set. Thanks a million!!!


I WILL BE AT THE EASTERN NATIONAL IF Either of you are going, I can meet you!!!!

[Zeke3]

In case you still want the dimensions, here is a drawing based on a gasket. The extra width is needed at the bottom to cover a small water hole.

[rockfla]

Originally Posted by Zeke3

In case you still want the dimensions, here is a drawing based on a gasket. The extra width is needed at the bottom to cover a small water hole.

Thank you Zeke3, I saved it at well...good to have just in case!!!!