M38 Heat Riser Issue

MarkR1951M38 · Posted: Mon Mar 27, 2017 7:09 am Post subject: M38 Heat Riser Issue

Hey all,
While attempting to install (missing) a heat riser spring limiter, I twisted off the bolt head of the mount bolt. I drilled it out and then attempted to "easy out" it...and #@$%@ if I didn't break the easy out in the hole. See pic.

My question, is what is the worst case scenario if I do not hook up the heat riser? just let the flapper flap or tie the weight one way or another. I wish not to have to purchase new entire intake and exhaust manifolds. The one I have is welded together. Also, living in the south, I don't plan to drive it in the cold months.

Mark R

4x4M38 · Posted: Mon Mar 27, 2017 7:20 am Post subject:

You can try heating the broken portion to red with a very small flame
and allow to cool to take the temper out. Then drill with progressively
larger bits until you begin to approach the manifold hole wall.

I think you will have difficulty without a functioning heat riser.
_________________
Brian
1950 M38
MC11481
http://www.willysmjeeps.com/v2/modules.php?set_albumName=album372&op=modload&name=gallery&file=index&include=view_album.php

wesk · Posted: Mon Mar 27, 2017 8:21 am Post subject:

I do not understand why the arse that invented them ever called them "Easy" outs. I do not use them. Any rate the best choice at this point is the trip to a machinist.

In the illustration above that broken fastener needed to be drilled out a bit further so the larger diameter section of the easy out would have been deeper engaged. You should have only half of what is remaining od the bolt thickness in that photo.

The risk in allowing the flapper to bounce around is engine damage and / or loss of power.
_________________
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php

MarkR1951M38 · Posted: Tue Mar 28, 2017 7:53 am Post subject:

Thanks guys...I may try to use the broken easyout and bolt remains to spot weld the spring bracket to the manifold to get it installed. then at a later date when the rebuild is complete and I come across some extra cash, I'll replace the two manifolds. I'll spend my money now on the much needed missing parts...gas tank, alternator, starter, oil filter assy, radiator, etc.

4x4M38 · Posted: Tue Mar 28, 2017 8:26 am Post subject:

I don't think at this point you need contemplating new manifolds.

You are a ways yet from having to wave the white flag on this problem.
_________________
Brian
1950 M38
MC11481
http://www.willysmjeeps.com/v2/modules.php?set_albumName=album372&op=modload&name=gallery&file=index&include=view_album.php

wesk · Posted: Tue Mar 28, 2017 8:38 am Post subject:

$20 or $30 spent at the machinist now will have you finished with the manifold project and able to move on without coming back to it.
_________________
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php

MarkR1951M38 · Posted: Tue Mar 28, 2017 9:27 am Post subject:

You have a good point there Wes, thanks for the brain jar Very Happy

oilleaker1 · Posted: Tue Mar 28, 2017 1:09 pm Post subject:

I hope you realize that you've caused pain for the rest of us with that photo. Crying or Very sad

At least you can carry to the machine shop and get it pulled out. John

4x4M38 · Posted: Tue Mar 28, 2017 2:30 pm Post subject:

Yah,
That gave me a flashback to when I put a prybar through my parking
brake drum to help break the companion flange nut loose.

I still wake up in a cold sweat thinking about it..

Needless to say among the items I had to replace rebuilding my transfer
was a brake drum.

Shocked

_________________
Brian
1950 M38
MC11481
http://www.willysmjeeps.com/v2/modules.php?set_albumName=album372&op=modload&name=gallery&file=index&include=view_album.php


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