Hi Eric,
I see that at least one reply to your message mentioned my name, so I
figured I'd chime in. Granted, I'm probablt three weeks too late, but
better late then never.
Regarding end-float - it's better to be be a little "tight" than too loose.
I'd mix and match a pair of .005 over thrust washers with a pair of STD
TW's and hope that I was in the .006 range. As you may know, the catalogues
list a .0025 over thrust washer, but nobody has been able to sell them for
a long time.
Frankly, .0075 os probably okay.
If you are totally neurotic about getting a desired end-float, it is
possible to _carefully_ remove some material from the thrust washer(s)
using a piece of extremely fine wet-or-dry sandpaper and _oil_ on a piece
of glass to get a fine, even "cut". But this sort of procedure represents
the extreme.
Others may comment about "pinning" the TW's. This is a good idea, but only
if you really crank the engine a lot and run at very high RPM's. Otherwise,
it's overkill.
But otherwise, I'd say that .0075 was most likely OK.
Regarding the "positioning" of the rods, don't worry about it. If your
crank was "cut" properly, the radius transition to the journal surface
should provide the necessary control that you are looking for. Also note
that the sides of the rods are machined smooth - this is allow them to run
up to the "webs" without causing any problems.
Finally, regarding Loctite on the main journals, for a street motor
application, you probably do not need Loctite. If you run the motor at very
high RPM's, then you might want to consider it. You also mentioned
lock-washers. These were only used on TR250's and very early TR6. All TR6
motors after the transition used a slightly shorter main cap bolt and no
lock washer. I do not have a dimension for you, but I know this to be the
case and I also read something recently about this... I think there might
have been a factory technical bulletin on this subject. That being said,
I've never seen a TR6 motor with the lock washers on the main journal cap
bolts. To get the proper torque, you should lightly oil the bolts when you
insert them, this will assure a valid torque setting to the bolts.
Good Luck!
rml
TR6's
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