Another distraction from the P5B - 1969 Triumph MK1 2000

[joffa]

What better way to delay putting the P5B Coupe back together than to get another classic that needs pretty much the same work - enter the 1969 Triumph Mk 2000.  Have been looking for a nice, rust free Mk1 for years and years so couldn't resist this one.  Was going to convert this to 2.5PI spec but the 2000 is a great engine and it is all so original so will probably leave it it as it is.

Bought it running but roughly and since Jan have done a heap of work culminating in it getting over the pits so is now registered.  It hadn't been driven for many years, not sure exactly but last time it was registered was 10 years ago.  Things started of pretty slow but a blown core plug - of course it had to be the one at the back of the block that you can't get without taking the engine out, has meant the engine is out and getting a quick re-fresh before getting it back in and driving.  Engine is all original and in surprisingly good condition so spent today slipping in new mains, thrust washers and giving the cylinders a hone.  Next up with be to get the new rings on and fit the piston, new seals and get it back into the car.
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[joffa]

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[joffa]

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Getting the engine out of these from the top is quite tricky.  A load leveler is mandatory to tilt back to clear cross member.  Great simple little engine.

[joffa]

   
Mains were worn and made an audible knocking - didn't have time for proper sizing and machining so used new standards.  Never used a honing machine before but lots of reading and the results turned out well.

[djm16]

Did you use a bottle brush hone?

[joffa]

No used one of these - couldn't find one of the bottle brush ones.  This one worked well with only 20 seconds or so of grinding on the electric drill and the job was done.  Like a lot of the special tools I end up buying - used it for 3 minutes and now it will sit there for years before I use it again.  

[enigmas]

Joffa I had one of these engines (during my 20s) in my MG Magnette during one incarnation. At some point it started making horrible groaning noises although the engine ran very well. Upon investigation I was told that Triumph 2000 6 cyl engines ran the camshaft directly in the cast iron of the block, ie., there are no cam bearings for the journals to run in. It was cheaper to replace the engine than to repair it.

Jun 15, 2021 13:39:55 GMT djm16 said:

Did you use a bottle brush hone?

Flex-hones or Ball-hones are a great tool for adding a perfect 45° cross hatch pattern to viable/glazed cylinders. They're obviously not a tool/device used to straighten or reclaim an out of round or bell-mouthed cylinder. A stone hone is more suited for that type of task...if you're careful. The flex hone follows the contour of the cylinder adding a crosshatch and removing virtually negligible material.



PS. If you reside in OZ it's much cheaper to buy a flex hone directly from the USA than it is locally.