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I think I have a problem with one of the conrods - HELP

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McCabe-Thiele (Ted):
This morning I fitted the two crank case halves and it all went well - all torqued up fitted the primary gear shaft etc.
After fitting the shaft in the primary drive all went together ok.

I held up the timing chain and rotated the crank all seemed okay - I checked the conrods for free movement and number two just seems a bit tight occasionaly compared to the other three that would flick left & right as I expected.

I added some extra oil it seemed to help but at the top of its travel I can feel (or imagine) a slight tight spot.
With the conrod at the bottom of its stroke the rod will move easily to the left & right if you get my meaning - not quite the case when its near the top of its travel?

When I plastigauged the conrods the clearance were the same on all four rods - with each rotation of the crank the issue seems to have improved.

Do I need to seperate the case again & examine number 2 con rod bearings ?

Nurse Julie:
Did you rotate the con rods on the crank before you fitted the crant Ted to test for any tight spots?

400 Cafe Racer:
Hi Ted,

As a matter of interest, what readings did you get with your Plastigauge on the Con rods and the Main bearings.

Thanks

Dennis

McCabe-Thiele (Ted):

--- Quote from: Nurse Julie on June 02, 2021, 03:30:46 PM ---Did you rotate the con rods on the crank before you fitted the crant Ted to test for any tight spots?

--- End quote ---
No I didn't - clearly I should have done.

McCabe-Thiele (Ted):

--- Quote from: 400 Cafe Racer on June 02, 2021, 05:16:54 PM ---Hi Ted,

As a matter of interest, what readings did you get with your Plastigauge on the Con rods and the Main bearings.

Thanks

Dennis

--- End quote ---
All four were 0.0010 thou or 25 microns. All four fitted with Green shells.
 Ted

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