[TR] Engine stand

[DAVID MASSEY]

 The math says:The cross sectional area of a 5/16 bolt is 0.076 sq in.  But the tensile strength of a grade 5 bolt is in the range of 100,000 PSI which means a 5/16 bolt will pull apart at about 7,700 lbs.  Lifting a 600 lb engine with four bolts good for 7,000 lbs leaves a pretty generous safety margin.
 
Dave 

 
 
-----Original Message-----
From: GLEMON <GLEMON at neb.rr.com>
To: 'Bob Nogueira' <nogera at hotmail.com>; 'Triumphs list' <Triumphs at autox.team.net>
Sent: Wed, Oct 24, 2018 9:00 pm
Subject: Re: [TR] Engine stand

Don't let these guys make you feel bad about asking the question, freaks me out too.  If you look at the factory manual for a Healey big six they pull it out with a special tool on the valve cover studs, which are not very substantial.  
I have decided intellectually the 5/16" bolts are not something I need to worry about, but it still looks like a lot of weight held on by some little sticks to me.
However, a big six will tilt a small three point engine stand pretty easily if a wheel catches on some kitty litter when you try to push it.
Greg LemonTR250

-----------------------------------------From: "Bob Nogueira" 

 To: "Triumphs list"
Cc: 
Sent: Tuesday October 23 2018 2:15:26PM
Subject: [TR] Engine stand

 I’m about to rebuild my TR 4 engine. I’ve done it three times in the past so there’s not much I’m worried about. The one thing that freaks me out is suspending the engine on the engine stand by four 5/16 inch bolts. Every time I see it sitting there I freak out that the bolts are going to snap and the engine is going to come crashing down.
 Two things I’ve done to relieve my paranoia is add a cross beam on the front so it has four wheels not the original three and keep a two by four between the front of the engine and the leg to carry the weight of the suspended engine.
 Two questions, am I being paranoid and should I use grade 5 or grade 8 bolts to fasten the engine to the stand?
 
 Thanks for any advise.
 
 Bob Nogueira 
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