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September 29th, 2008

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Q & A: Twin Cam crank measurements

Saturday March 30th, 2002
Q & A, MGA, MGB, MGC, MG T-Type, Midget
Hi John:

As requested, this is a quick reminder to ask you to please take the
measurements on the Twin Cam crank presently for sale on ebay:

Steve! Remind me again in case your request ends up where some of my
"memories" go -- I'll try to do that tomorrow for you. You know, Lyle
York
knew a guy who made an MGB 5 main twin cam using all Twin Cam parts but
added that nose on the crank.

I have been in contact with this person, he being Bill Spohn form the
northwest US; Washington, maybe? Anyway, he did build up such an engine,
with a 5-main MGB block and cross-drilled / nitrided crank, and the
balance
being Twin Cam. Bill wanted a large capacity and strong crank for racing
purposes. Since I'm building a street engine, and since I wanted an
original appearance, Bill recommended that I find a 1622 block and crank.
I
found a nice set, it passed the magnaflux test, so I'm now accumulating
the
Twin Cam bits and saving for the machine work in a few years.

Well, thanks in advance for taking the measurements.

Regards,
Steve Johnson

From the rear side of the front main bearing:

First Diameter (the main bearing)
Ends 1.520 from rear
2.000 diameter

Second Diameter
Ends 3.174 from rear
1.749 diameter

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