Lets talk lifters!
Postmaster
Joined: Sep 2016
Posts: 3,941
Likes: 240
From: Texas
Laughing Gas
Joined: Jul 2011
Posts: 836
Likes: 213
Welding precision components has always scared the daylights out of me due to the fact that as soon as you place a puddle of weld on a piece of steel two things happen:
1. Expansion at that point
2. The structure of that steel changes.
As it cools the weld now starts to shrink, things move and more than likely the camshaft is a different steel/hardness than the gear is. More often than not there will be tiny cracks in the weld. You can almost guarantee that any alignment/concentricity will change/most likely be worse.
Much better off to utilize a retaining compound. It would be even better if a small band could be machined/ground into the gear such as .250 wide and .003 deep to give the retaining compound a spot to hold.
Rob
1. Expansion at that point
2. The structure of that steel changes.
As it cools the weld now starts to shrink, things move and more than likely the camshaft is a different steel/hardness than the gear is. More often than not there will be tiny cracks in the weld. You can almost guarantee that any alignment/concentricity will change/most likely be worse.
Much better off to utilize a retaining compound. It would be even better if a small band could be machined/ground into the gear such as .250 wide and .003 deep to give the retaining compound a spot to hold.
Rob
Hotshot
Joined: Dec 2014
Posts: 17,835
Likes: 3,124
From: Jersey Shore
I was trying not to get wordy, but Rob has this covered.
If you look as the ID of the gear it’s been induction hardened. You can weld hardened metal, but you’ve lost all control over the metal crystals. It’s never somewhere I can to go in a shop environment.
This is the brochure on their retaining compounds.
http://dm.henkel-dam.com/is/content/...DesignGuidepdf
Hey Rob.
If you look as the ID of the gear it’s been induction hardened. You can weld hardened metal, but you’ve lost all control over the metal crystals. It’s never somewhere I can to go in a shop environment.
This is the brochure on their retaining compounds.
http://dm.henkel-dam.com/is/content/...DesignGuidepdf
Hey Rob.
Thread
Thread Starter
Forum
Replies
Last Post
zerfetzen
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
5
May 19, 2012 08:11 AM
HonestEngine302
1973 - 1979 F-100 & Larger F-Series Trucks
8
Apr 24, 2011 03:20 PM
freemanrebel
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
2
Oct 26, 2004 06:26 PM
jmackie
Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460)
9
Jul 14, 2003 07:30 PM
