wanted chev 216 20thou under main bearings

[Mike K]

Originally Posted by jim sewell

The 216 engine that was used in the chev blitz was made in Canada from 1937 to 1945 and this can be identified by having a single hole from the waterpump to the block and having dome top pistons .

This same engine was produced in the USA from 1937 until 1940/41

In 1940/41 the engine underwent a change in the USA and came out with two holes going from the water pump to the block and flat top pistons plus other internal engine changes , this engine was produced until 1947.

Australia in 1942 received from the USA a considerable number of chev trucks Model M 160'' W/base for war support ( in Aust we call them Lend/Lease trucks ) .
It is possible over the years that these engines have become transplanted in blitz's or vice versa and this make ordering engine parts a bit tricky , when ordering parts on line from the USA keep in mind that blitz engines are the 1937 to 1940/41 engine .
Jim S.

Yes on all of that Jim. And , on the 216, the push rod length and lifters changed at 1940 - push rods are shorter than 1939.

Another difference from 41 on, and this applies to the local GMH assembled 216 engines : the valve spring caps changed - from memory this affects the valve stem length. I've got a GMH notation somewhere , explaining it.
Mike

[jim sewell]

Andrew
In an earlier post I listed std bearings from Nasco , here are the .020'' u/s

Front 3847200 37/47
F/Int 3847201
R/Int 3847202
Rear 3847204 40/47

Repco would have 020 tacked onto the existing number .
If you come across other brands of bearings I maybe able to cross referance.

And , on the 216, the push rod length and lifters changed at 1940 - push rods are shorter than 1939.
Mike
The push rod part number for the 1940 chev is the same part number as the Blitz so these must be 1940 engines in blitz's, this push rod went from 1940 to 1952.
On the 235 chev motors ( 1946/52 ) fitted to Maple Leaf and 15 series spash feed , these push rods were about 3 mm longer and this is an easy way to tell if you have a 216 or a 235.
GMC have similar crankshaft journal sizes but differ in the locating tang / dowel arrangement.
Regards
Jim S

[Mike K]

Just some more info .

Around ten years back, my local REPCO store ( Warragul ), still had 216 Chevy ring sets listed as available from their then current catalogue. When informed of this at their counter , I was somewhat surprised as they had, by that time, got out of supplying parts for older vehicles.

The other well known source of Chev bits, Col Bradford of Cheltenham, Melbourne, has closed and retired. He was always good for just about anything.
Mike

[Mike K]

I found the 1941 supplement in the 1940 GMH issued manual .The supplement also has info on the WO split rims .The front cover states :

Third edition
reproduced for the use by
THE AUSTRALIAN COMMONWEALTH MILITARY FORCES


QUOTE

The 1941 engine , with the exception of several improvements, remains the same as the 1940 engine. These changes are briefly , the addition of an inlet valve spring cap cover, improved timing gear lubrication, and revised machining of the inside of the flywheel to prevent lubricant geting onto the clutch plate.

The inlet valve stem is changed above the valve spring to make provision for the use of an inlet valve spring cap cover , umbrella type.

The 1941 intake valves can be identified by the number "41" stamped on the head . The stem is shorter to allow for the fitting of the umbrella and is not hardened. The valve, therefore , can be used in 1940 engines , providing the umbrella is also used

END OF QUOTE

Mike

[jim sewell]

Thanks for the info mike , interesting .
There is a good supply of .040'' o/size rings here in the West if anyone is requiring them for the 216 .
Regards
Jim S.

[aj.lec]

I contacted Ross Prince today
He didnt have what i needed
He has semi finished bearings at arout 010 under
Nothing near 020 under
Still no reply from any of the US companies

[jim sewell]

Try "Kanter Auto Products " USA.
They list them , but you would need to state the u/size required.
Regards
Jim S.