Model-A Crankshaft Conversion Machinist

[BRENT in 10-uh-C]

I have a customer's project in that has an OHV engine with a Model-A crankshaft conversion that appears to have never been finished on the front end. The Rods & Mains have been completed, but the nose of the crankshaft was not machined for T pulleys, etc. Is there any shops that still do the A cranks conversions that would be willing to finish this crank for us?

[Henry K. Lee]

Brent,

I have done about 40 each of them over the years, just need your crank, gear, woodruff key.

4two38three75seven09

Hank

[BRENT in 10-uh-C]

Good enuf. By chance are you coming to Luray where I don't need to crate this thing??

[Henry K. Lee]

No as I am writing new chapters in my life.

[ewdysar]

I was just getting ready for a similar question. Brent asked about the T pulley in his first post.

My new C crank block already has the timing gear installed.

Timing gears on A crank

Crank in block

With no hole for a “T” pulley for a wide belt. My ‘27 runabout with a Rajo and A crank, the pulley is for a V-belt. Do most A crank T engines use a regular A crank pulley like this?

‘27 runabout, front of engine

[Henry K. Lee]

I always drill mine to accommodate a T pulley. Normally I build my own set of pulleys to either a 4L or 3L size depending on accessories.

Hank

[Les Schubert]

To cover up the remains of the woodruff key I use a “SPEEDI SLEEVE”! They are available at better bearing suppliers.