Steve,
Unless you are sure the new small-end bolts were substantially better
quality steel than the originals (when they were new), I'd toss them and buy
four more. I've seen two blocks with large holes in them as a result of
broken wrist-pin bolts. 10 ft. lbs. may not sound a lot but it is about 40%
more than the specified torque in this particular application!
As for the split washer affecting the torque reading, I've always believed
the factory took them into account when they arrived at the specified
figures. (But I do always use Grade 8 lockwashers.)
And, no, Loctite isn't necessary, IMNSHO....
Lawrie
British Sportscar Center
----- Original Message -----
From: "steve devine" <stevedevine@rcn.com>
To: "Lawrie Alexander" <Lawrie@britcars.com>; <mgs@autox.team.net>
Sent: Monday, December 08, 2003 5:31 PM
Subject: MGA 1622 rebuild (continued) small connecting rod split pin torque
settings.
> All
> Question from last time:
>
> Im hoping theres someone
out
> there that has the specs for the crankshaft tolerences for a1622 mga
motor.
> I was pawing through my manual and it does not provide the thrustwasher
> clearences.
>
> Ok, thrust washers came into today and crank is in the
motor.
> a combination of standard
> and .005 gave me .003 tolerence. Thankyou everyone for help with correct
> clearence numbers on my last question.
>
> The new question: The split pin small end connecting
> rod torque tolerence is 25lbs
> according to the manual. I confused the gudgeon or lower rod end bearing
> tolerance and made the split pin 35lbs.
> Does anyone think I have caused a reason to be concerned
> for reliability for over tightening by 10lbs of torque? The small end
> conncting rod split pin bolt were brand new and made of better qualiy then
> the originals.
>
> The other question I have is do most of you engine
> rebuilders for this vintage engine recommend loctite for these
applications
> on split pin and gudgeon pin to keep the bolts from coming out.
>
> There was a new split washer on the small end
connecting
> rods and mainbearing caps but Im wondering if its throwing my torque
wrench
> readings out of spec when tightening.
>
> I apologize for seeming so anal about all of this, Im
just
> trying to do the best job I can so
> I dont turn this block into a boat anchor.
>
> Im sure a lot of you more experienced engine guys dont
> mind helping out a guy trying to improve my skill level. Anyway thanks
again
> any help is appreciated.
>
> Steve D
> BAMG
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