wanted for TR6 again....

[pfenlon]

Have stripped the engine now, and off to the engine man tomorrow for some light work and cleaning.

 

I am amazed to find the crank journals identical to the tolerances in the manual. all are also still round.

 

and bore wear is evident nowhere!!! the top measurement being the same as the bottom one on every cylinder.

 

Guessing the mileage is correct at 70K but it says something for the quality of the engines.

 

My distributor is missing the small spring that retains the knurled wheel, which is also missing.

 

If someone has a damaged dizzy that could help me out, please let me know, willing to pay of course.

 

Dizzy is Lucas 42306A 40-69 but I think the knurled wheel and spring are the same in every one?

 

 

 

 

 

 

[Guest ntc]

If your engine man does not replace the pistons and hone the block it will burn oil.

[Mark69]

Hi Pete,

If you get no luck on here you could always try Martin @ (Distributor Doctor)

[pfenlon]

If your engine man does not replace the pistons and hone the block it will burn oil.

Why would I want to replace the pistons?

 

Bores are standard??

 

Neil you are always the same, making statements, without a reason.

 

Its assistance I want, not enigmas.

 

Mark thank you, I will call Martin as you suggest.

[KiwiTR6]

Why would I want to replace the pistons?

 

Bores are standard??

 

Neil you are always the same, making statements, without a reason.

 

Its assistance I want, not enigmas.

 

Mark thank you, I will call Martin as you suggest.

 

Pete,

 

As a relative newcomer to the world of the TR6 I have to say that despite Neil's sometimes cryptic responses, I have found him to be extremely helpful with a wealth of knowledge about this vehicle which this forum would be all the poorer for if he chose not to participate. What's more, there were comments made very recently by both Stan and Stuart that were every bit as vague as any I've seen to date, so Neil is not the only one with a dry sense of humour.

 

Personally, it's not just the information resource that draws me to this forum (there are plenty of others to choose from), but the informal, friendly and helpful nature of the participants and the variance in their opinions that keeps me coming back several times every day!

 

Regards

Gavin

NZ

[astontr6]

Why would I want to replace the pistons?

 

Bores are standard??

 

Neil you are always the same, making statements, without a reason.

 

Its assistance I want, not enigmas.

 

Mark thank you, I will call Martin as you suggest.

TR OE pistons are known to fail after years of service this is what happen to my engine after 43 years of service and 96K. I was told this even 10 years ago by a well known TR engine builder. There was very little wear on the crank and in fact very little wear any where else even the cam followers were not pitted? There was very little wear in my bores they would have cleaned up on -.010" but that size of piston has not been available for years! The cam shaft cast iron block bearings were not worn which apparently was very unusual etc. But my engine was very poorly balanced which I had corrected and the fly wheel lighten which has made an unbelievable difference on tick over and smoothness of running and pick up I can honestly say that it has never run so well even when new.. The only other area where I was on borrowed time were the core plugs all were rusted but 2 of them were very nearly rusted through.

 

Bruce.

 

Bruce.

[DaveN]

@Bruce

 

<But my engine was very poorly balanced which I had corrected and the fly wheel lighten which has made an unbelievable difference on tick over and smoothness of running and pick up I can honestly say that it has never run so well even when new.. <

 

Mine gets a bit harsh when it gets to the top end of the red line. Where did you get your flywheel lightened?

Sounds like a something to do one afternoon.

[astontr6]

@Bruce

 

<But my engine was very poorly balanced which I had corrected and the fly wheel lighten which has made an unbelievable difference on tick over and smoothness of running and pick up I can honestly say that it has never run so well even when new.. <

 

Mine gets a bit harsh when it gets to the top end of the red line. Where did you get your flywheel lightened?

Sounds like a something to do one afternoon.

Howards in Slough on the Wexham road, they did a lot of work for Chris Whitor in his racing days! They did all my engine work: boring, grinding, valve guides, valves. As far as balancing goes pistons, all within 1gm, con rods these were miles out balance, apparently they always are! Crankshaft, flywheel lighten/balanced including bits on the front end, as an assembly!

 

Bruce.

[DaveN]

Cheers Bruce

 

Didn't realise they were still in business. Might go take a look!

 

Dave

[pfenlon]

TR OE pistons are known to fail after years of service this is what happen to my engine after 43 years of service and 96K. I was told this even 10 years ago by a well known TR engine builder. There was very little wear on the crank and in fact very little wear any where else even the cam followers were not pitted? There was very little wear in my bores they would have cleaned up on -.010" but that size of piston has not been available for years! The cam shaft cast iron block bearings were not worn which apparently was very unusual etc. But my engine was very poorly balanced which I had corrected and the fly wheel lighten which has made an unbelievable difference on tick over and smoothness of running and pick up I can honestly say that it has never run so well even when new.. The only other area where I was on borrowed time were the core plugs all were rusted but 2 of them were very nearly rusted through.

 

Bruce.

 

Bruce.

I thought that cranks were balanced at the factory??

 

is this not so?

 

And how much weight did you remove from the flywheel.

[astontr6]

I thought that cranks were balanced at the factory??

 

is this not so?

 

And how much weight did you remove from the flywheel.

Yes they were but Triumph ones not very well, another undisclosed fact in TR circles?. The equipment now used is much more advanced. A couple of years ago Practical Classics did an article on a rebuild of a 2.5 PI engine and they found the same things as me! But they also had to line bore the camshaft bearings and put in Spitfire shells,as they were well out of tolerance.. That engine was much more worn than mine. Metal removal from the flywheel was based upon Chris Whitor's drawing based upon what came be removed from the outer circumference area. Originally based upon David Vizard book , of tuning Triumphs over 1300cc As defined by weight I do not know. I will see if I can find out?

 

Bruce.