Author Topic: Horizontal crankshaft play  (Read 934 times)

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AsFarAsIGet

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Reply #15 on: March 07, 2024, 09:46:10 pm
Yet again, heat provided me with satisfactory results.

The main bearings on the drive side more or less fell out by them selves when the engine half was properly heated in the oven. However, it came as a surprise to me that the outer bearing on the drive side came out towards the outside of the engine and not the inward side. Is it supposed to be this way? From the reading up I have done, I thought both bearings on the drive side would come out towards the inside of the engine half.

On the timing side the bearing didn't fall out quite as easily. Never the less, I managed to get a puller in place, after removing all of the rollers, and get the bearing out pretty smoothly as well. The only thing remaning on the timing side is to remove the inner race of the bearing from the crankpin. Opposite to the drive side, the inner race on the timing side is pretty stuck and I don't really have any good tools for the job. Might let the workshop that will help me true and balance the crank assembly help me remove the inner race as well.

New bearings have been ordered and I'll soon send an order to HM for some other parts. When all parts have arrived the process of putting everything together again is about to commence :)

Regarding the big end I have decided to replace the floating bush with a new one. That is, I won't be going for the roller big end or the forged steel conrod. I hope a new set of bearings, a forged piston and a gentle treatment will take me far enough any way, and I'm most certain it will take me As Far As I get :)

/ Ruaridh
« Last Edit: March 07, 2024, 10:27:00 pm by AsFarAsIGet »
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2002 Indian home market Bullet 500


AzCal Retred

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Reply #16 on: March 07, 2024, 10:20:19 pm
AFAICG - nice work! As a sprout I worked for an Olde Boy that had cut his teeth in the shops of the Twenties and disassembled nearly everything using a torch. Seems appropriate to the task.

Your shop looks fairly well stocked. You possess or have access to V-blocks & dial gages? Bullet Whisperer has several YouTube vids on crank truing.

Carry on - looks like you're having fun! - ACR -

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REpozer

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Reply #17 on: March 07, 2024, 11:07:38 pm
https://www.youtube.com/watch?v=qE8BMOqRJH4
 
This vid is pretty good for this.
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AzCal Retred

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Reply #18 on: March 08, 2024, 03:42:12 pm
Performance Classics Paul Henshaw aka "Bullet Whisperer"

Royal Enfield crank truing by Performance Classics.
https://www.youtube.com/watch?v=hnMfvSPo5sY

Royal Enfield Indian Bullet crank before and after repair and truing to the lowest attainable runout
https://www.youtube.com/watch?v=ghQCCi4bOb8

Royal Enfield big end issues and bottom end rebuild discussed.
https://www.youtube.com/watch?v=t1KahIE_J7o
A trifecta of Pre-Unit Bullets: a Red Deluxe 500, a Green Standard 500, and a Black ES 350.