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Farmall 400 sleave (deck stamping)

H

Husker44A

Well-known Member
Ok guys I've finally had the chance to look on the block deck for the stamping someone mentioned on my last post. Looking from the front to back.
1=D
2=D
3=E
4=D
These lettered are stamped on the CARB SIDE of sleaves.
So, now what ? obvisouly the sleaves are different BUT WHAT'S the DIFFERENCE ? Thanks guys for the help.
 
IMHO, they selectively fitted parts at the factory, to close tolerances, for the day, and that's what those markings related to.
 
The markings are the size of the bore for selective fit of sleeves when the engines were manufactured. No two bores or no two sleeves are exactly the same and when they have a box full of sleeves they could select the best fitting ones. Not going to find any sleeves for sale coded for those numbers as it was just for original assembly. IH tried to selective fit for some service sleeves in some engines like the 806 but gave it up very shortly as it just was not practical. I always try all sleeves in all bores to get the best fit. It is always a compromise up to a point. You have to do this at room temp so if you are going to freeze the sleeves for installation do the selective fitting and mark them before you do that. I personally always pull a sleeve in place except the loose fit ones that push in by hand.
 
Higher the letter past A the slightly bigger the block bore was. Unless you get a sleeve that came out a bigger OD than usual now. Thinwall sleeves will go easy in that block.
 
(quoted from post at 04:39:25 08/24/14) Higher the letter past A the slightly bigger the block bore was. Unless you get a sleeve that came out a bigger OD than usual now. Thinwall sleeves will go easy in that block.
Click to expand...

But will the thin-wall sleeves be a good fit once they are in? Or should a guy use some loc-tite?
 
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