Chris:
So long as you have a 5 main engine, all you need to know is
full floating or press fit. The early pistons are full floating and the
pin slides into the bushed connecting rod. Circlips in the piston hold
the pin in place. On the late connecting rods the pin is pressed into
the rod and the piston has no circlip groove. You can convert the later
rods to full floating by machining the small end to accept a pin bush.
The full floating pistons seemed to give a longer life, but that might
be folklore.
Kelvin.
-----Original Message-----
From: Chris Chandler [mailto:spawn@net-link.net]
Sent: Tuesday, December 15, 1998 1:57 PM
To: MG List
Subject: Pistons
Hello All!
I'm having the engine in my '72 B rebuilt, and I've come across a
snag...
I need to order pistons (+.020), but I'm not sure which kind! The
engine ID plate was apparently ripped off long before I got the car, and
it never occurred to me I might need it. (DOH!)
Is there any way to tell which engine I have without the ID plate? It's
not even certain at all that the engine is even original to the car...
I'm going to have the machinist look at the pins and let me know if
they're press fit or floating, and I know it's a five main engine. Are
there any other things to look for? Length of piston? Anything else?
Thanks a bunch!
--
Chris
'72 B Roadster (Too many pieces to count)
'70 B Roadster "The Ghost"
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