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21 stud main bearing help and questions I'm a new member here, my handle is hotrodjay. This is my 1st post. I have a 37 21 stud flathead v8 (pumps in block). I pulled the pan to clean out the quart of sludge (been sitting for decades). Uppon doing so i pulled the rear main cap because i noticed there was no oil slinger seal in it. The block does have the upper seal obove the crank. Nothing in the rear main cap. I did notice a "68" hand stamp on the cap; I think is 1936 only? Is there no slinger seal for this cap or do i have the wrong one??? I have pictures but how do I post them...lol
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Re: 21 stud main bearing help and questions Question #2, how do I post pics? I've tried to no avail
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Re: 21 stud main bearing help and questions On the picture issue it is most like the size is to large. They need to be in the 500K range or less. Click on Go Advanced and then click on paper clip logo and open the manage attachments window. There is a key near the bottom of the widow that like the size limits for different formats.
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Re: 21 stud main bearing help and questions I know thid post needs pics, I only have an android phone...no internet here at home. I'll try and post them at work on the pc. How do I turn a jpeg into a url...hmmm, I'm a mechanical guy and not so tech savy.
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Re: 21 stud main bearing help and questions Can't answer that one, I use jpeg format to post.
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Re: 21 stud main bearing help and questions Thankyou JSeery
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Re: 21 stud main bearing help and questions I've uploaded pics two times...what gives? They won't show???
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Re: 21 stud main bearing help and questions Getting pissed at this point. I've uploaded pics twice and seemed successfull but wont post ��
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Re: 21 stud main bearing help and questions What you need to do is resize the pics BEFORE you try to upload them.
And if your 37 its the same as the 36 crank,which I think it is,(but Ive been wrong before) I dont think there is a seal in the cap,I have a 36 on my eng stand ,and have just fitted the crank and rods,there is only the half round alloy bit in the block and nothing in the cap. Lawrie |
Re: 21 stud main bearing help and questions 37 block will have the die cast slinger pieces- both upper and lower.
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Re: 21 stud main bearing help and questions Quote:
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Re: 21 stud main bearing help and questions 1 Attachment(s)
It will just have the two halves . The 68 stamped I would guess is it's the Prefix to the bearings needed . 68 - 6331
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Re: 21 stud main bearing help and questions The 37-41 lower slinger seal that is "supposed" to fit my rear main cap does not. That's why I wrote thus post. Therefore, what cap is on my engine? That's my question. I know how it's supposed to go...it just doesn't "go".
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Re: 21 stud main bearing help and questions Is it a possibility that when they say lower slinger seal, the lower is for the "upper" block portion and the upper seal fits the "lower" main cap? The "lower" seal fits the cap correct? I can't resize my pics on an Android phone as far as i know. I have no computer here.
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Re: 21 stud main bearing help and questions Maybe I have things backwards, Is the lower seal for block and the upper seal is for the main cap? I just assumed the lower seal is for the cap so that's what I got.
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Re: 21 stud main bearing help and questions 1 Attachment(s)
Rear main cap on my 1937 21 stud
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Re: 21 stud main bearing help and questions 1 Attachment(s)
37 main cap top view
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Re: 21 stud main bearing help and questions 1 Attachment(s)
Rear main cap on my 37 21 stud
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Re: 21 stud main bearing help and questions 1 Attachment(s)
This is the "lower" rear slinger seal I bought for my rear main cap. Says it fits 37-41 engines. It doesn't fit the main cap in the previous pictures that's in my 37 flathead.
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Re: 21 stud main bearing help and questions I just downloaded all your photos Jay and was starting to upload them! Looks like you figured it out, LOL
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Re: 21 stud main bearing help and questions 1 Attachment(s)
37-41 lower rear main seal out of the package.
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Re: 21 stud main bearing help and questions 1 Attachment(s)
Side view of the lower rear main slinger seal for 37-41 flathead.
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Re: 21 stud main bearing help and questions Ok so I figured out how to posts pictures finally...my error. Here they are...what do you y'all think?
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Re: 21 stud main bearing help and questions I did...lol, thanks for your patience.
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Re: 21 stud main bearing help and questions What do I have here?...lol
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Re: 21 stud main bearing help and questions Late 36 early 37? Does my rear main cap differ from a 37? Do I have a 36 cap on my 37?
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Re: 21 stud main bearing help and questions While y'all are trying to help me I figured I'd brows some other posts and see if I can help someone else to return the favor😉
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Re: 21 stud main bearing help and questions A little suprised no one mentioned you are missing a piece of pipe on the cap...
The idee is to get the oilreturn below the oillevel of the engine to prevent blowby going out the rear mainseal. Looks like you have a mix of a single and double singer seals. |
Re: 21 stud main bearing help and questions I know about the drain pipe, ford canceled that in early 35 due ti the crank case ventilation system. Question is does this particular main cap have a lower seal or not? If my engine is a late 36/early 37...maybe there is no seal. Is there a seal for this cap or not? Ready to install the pan but need a definite answer. Again...there was no drain pipe from 37-41. None from 41-48. Does my main cap fit a slinger seal or not? Maybe my 37 is an earlier model where a lower slinger seal didn't exist like the 36. Guess I have an early 37...36 had no seal at the main cap. I'll put it back together the way it was.
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Re: 21 stud main bearing help and questions Your rear cap certainly resembles the type found on a 36 engine. Every 37 engine I've seen has the insert that you picture elsewhere. Thing is with these old Fords, nothing is ever totally black and white....it would appear that at least one [yours] 37 engine was produced with the earlier style rear cap. No worries, use it as is in conjunction with the inserted upper die cast piece in t5he block. It'll work....and, you don't need the oil return pipe the above poster alludes to. That item was discontinued in 1935.
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Re: 21 stud main bearing help and questions Mate, you're a faster typist than me! My answer is the definitive answer you seek, and you are correct! Bolt it up and run it! Good luck, Brian
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Re: 21 stud main bearing help and questions Drain pipe ended in early 35. Crankcase ventilation ended the need for a drain back pipe off the main cap. Also due to a better oil pump aswell. The question is does my main cap fit a lower seal or is it a 36 cap where it didn't exist yet? 37 was the 1st year for the lower seal. Maybe I have an early 37? Late 36? Does someone have a pic of a 37 main cap I can compare mine to?
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Re: 21 stud main bearing help and questions The answer is your cap is the same style as in a 36 which does not have a separate insert as does a 'normal' 37 cap.
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Re: 21 stud main bearing help and questions Brian, do you have a picture?
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Re: 21 stud main bearing help and questions That's what I was thinking, need confirmation. Also you can see my 37 running realy good on fb. Look up hotridjay...at the end of the video i forgot to turn the ignition on...lol. I was excited...haha
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Re: 21 stud main bearing help and questions Thankyou Brian, helping me confirm my theory..lol. I know 36-38 was a compilation of parts. Henry didn't wast anything...lol. check out my fb. Look up hotrodjay to see this engine running. I deleted the video from my phone. You can see it on my fb. Putting it back together the way it was, thanks everyone!!!
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Re: 21 stud main bearing help and questions 2 Attachment(s)
37 rear cap
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