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Best crank shaft

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Best crank shaft #1
chris Chris Roop (RIP) Pendleton, OR, USA Sign in to contact	Topic Creator (OP) Mar 31, 2015 10:23 PM Top Contributor Joined 25 years ago 43,805 Posts

In order from best to worst, how would you rank the various styles of stock crankshafts?

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Re: Best crank shaft #2
spikemichael Michael Caputo Canton, IL, USA Sign in to contact 1973 MG MGB "Freebie" 1973 MG MGB 1974 MG MGB "Spike" 1976 MG MGB "Cecil" & more	Mar 31, 2015 10:40 PM Top Contributor Joined 14 years ago 19,079 Posts

New billet Crank - 10
Undamaged - 9
can be turned -7
pretzel -1

Michael J. Caputo
'79, '77, '76, '74.5 (rubber dual SU), and '73 owner. Extensive experience in 12v Audio System design and installation. Vendor of Regalia and Promotional Products since 1993. Supplier of Accessories to MOSS. Forum Member since 2009; with a warped sense of humor since birth. Publisher of the annual MGB & GT Calendar, mailed worldwide.

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Re: Best crank shaft #3
wrightgcbuilder Dan Wright North Platte, NE, USA Sign in to contact	Mar 31, 2015 10:44 PM Joined 14 years ago 3,086 Posts

It seems I asked the same type of question quite some time ago.

I believe the answers I got, were:

For the performance guys, flat sided forged.

For a smooth running street engine, bell shaped cast.

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Re: Best crank shaft #4
Rod H. Amity, OR, USA Sign in to contact 1964 MG MGB 1968 MG MGB GT	Mar 31, 2015 11:21 PM Top Contributor Joined 20 years ago 32,181 Posts

Chris, here's a thread from over in the motorsports forum that may not answer specifically, but is a great thread.

http://www.mgexp.com/phorum/read.php?41,728400

Friends talking around a fire is the history of mankind.

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Re: Best crank shaft #5
Speedracer Hap Waldrop Taylors, SC, USA Sign in to contact 1967 MG MGB Racecar "The Biscuit"	Apr 1, 2015 05:03 AM Top Contributor Joined 18 years ago 43,703 Posts

Chris for a street engine, the answer I would give you, is any of the three 5 main cranks work fine. I guess racers would tell you then middle year "flat side" steel crank is their favorite, I kinda agree with this, it has the worse counter throw design, but that design does allow for the most material to be removed in lightening job, not really a concern for a street engine. The later cast crank gets the least love, but is the best design of the bunch, if it were a steel crank like the two earlier cranks, it would be the favorite of the racers.

Hap Waldrop
Acme Speed Shop
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