Flathead Guru's...Question on installing the crankshaft sleeve

[eicke]

For the Guru's........which direction do you install this sleeve? I should have paid attention when I removed it. Notice the offset in the spiral. Installing it either direction will pull oil back into the engine. Try'd that. Was going with a one piece seal and didn't like the sloppiness of the fit on the crankshaft. Decided to go old school and use the rope seal. BTW, 1950 8BA.









DSC_0396.jpg

[eicke]

Not 100% on this but I believe the top on this pic goes IN towards the crankshaft/slingert.

[eicke]

Anyone?

[51 MERC-CT]

This is a bushing off of an unmolested/never rebuilt engine that shows the seal fully engaged with the spirals towards the front, not towards the crankshaft.

[eicke]

This pic is from DIYFORD (H & H's Mike Herman doing the rebuild)

[eicke]

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And another from DYIFORD.com...……..(a little tough to see)

[flatheadmurre]

That spiral is there to pull the oil back into the engine...no good if it stops in the middle of the rope seal...
Take a look at the early sheeves that has it built in if in doubt.
So spiral goes in towards gear.

[19Fordy]

If the crank turns CW, doesn't the bushing have to be installed like 51MERC-CT shows so as to "spiral" the oil back towards the engine?

[flatheadmurre]

Originally Posted by 19Fordy

If the crank turns CW, doesn't the bushing have to be installed like 51MERC-CT shows so as to "spiral" the oil back towards the engine?

Spiral dont care which way its installed...same as a bolt it´s either right or left hand...no matter if your turning the bolt or the nut...

[eicke]

Originally Posted by flatheadmurre

Spiral dont care which way its installed...same as a bolt it´s either right or left hand...no matter if your turning the bolt or the nut...

Yep....tried that. Either way the spiral would pull it back into the engine.

[eicke]

Originally Posted by flatheadmurre

That spiral is there to pull the oil back into the engine...no good if it stops in the middle of the rope seal...
Take a look at the early sheeves that has it built in if in doubt.
So spiral goes in towards gear.

I kinda agree, Mike Herman built 100's if not thousands of flatheads and putting on a sleeve backwards would be a rookie mistake which is possible but not likely.

[Tony, NY]

I used a Speedi-Sleeve with the one piece seal.

[deuce_roadster]

Put your thumbnail in the groove, view it from one end and turn it the way the crank shaft goes (Clockwise when viewed from the front) Which way does your thumbnail move? This will tell you what you want to know without looking at any pictures.

[flatjack9]

In the picture in #1 post, the top side goes against the crank gear,

[eicke]

Originally Posted by flatjack9

In the picture in #1 post, the top side goes against the crank gear,

Thanks, That's the way I installed it. I've rebuilt quite a few motor and it's usually the little things that stump me.