[TR] Update on TR3A from 2 weeks ago

[Alex]

Hi Randall,
First off.....I gave bad info on the proud........3 were .006" and 1 was 
.0055.

Reassembled and checked compression. No change.........

Pulled exhaust valve in the cylinder in question and the one next to it and 
both looked the same.

Rechecked flatness of head and deck with a straight edge and feeler gauges 
and could not  get a .001" feeler under the straight edge.

Looking like rings at this point.

Did determine that the engine has 86mm pistons.... with the following info 
on the top of the pistons.....

BOTT-OC45     RA5228    STD.

Any info on these pistons as far as 3 or 4 ring pistons?

Alex

----- Original Message ----- 
From: "Randall" <TR3driver at ca.rr.com>
To: "'*Triumphs List'" <triumphs at autox.team.net>
Sent: Sunday, December 11, 2011 11:41 AM
Subject: Re: [TR] Update on TR3A from 2 weeks ago


>>   4.. The sleeves showed a gap to the block from anywhere
>> between .000"
>
> IMO that will never hold, at least not for very long.
>
>>   6.. The # 3 cylinder with the 55-60 lbs compression showed
>> that the intake
>> valve was wet....with gas/oil. Took this one out and
>> inspected the seat.
>> Perfectly clean.
>
> What about the exhaust valve?  The intake being wet likely just indicates
> that the cylinder wasn't running last time you started the engine.  But my
> guess would be a broken ring or piston land.
>
> -- Randall