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PostPosted: Mon Nov 18, 2019 10:18 pm 
On the street
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Joined: Sun Dec 18, 2016 6:15 pm
Posts: 28
Location: Northern British Columbia
Country: Canada
Bikes owned: 72 GT750, 74 GT750, 75 T500, 76T500, 09 DR650
What wisdom is out there on bolting up the engine cases on a rebuilt engine? I'm re-assembling my GT750J with rebuilt, shined, cleaned components and newly plated engine bolts. All tapped holes have been chased. Everything has been cleaned. All vapor blast grubles carefully removed

    does anyone still use lockwashers? The old ones were limp and flattened after 50 years. With the really good thread lockers that we have now (like Locktite 243-blue) what is the point of lock washers?
    re-assemble with bolts dry?
    Locktite 243 or no?
    copperlube or no?


PostPosted: Tue Nov 19, 2019 7:32 am 
Moto GP
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Joined: Mon Dec 13, 2010 4:32 pm
Posts: 3489
Location: southwestern Pennsylvania
Country: USA
Bikes owned: 69 T350 thru 75 GT750
I use new JIS bolts & nuts, and new washers & lock washers. All zinc plated. Mostly from McMaster-Carr & BoltDepot. Plus a few odd sizes from Suzuki.

Plus a zinc-plated crankcase cover screw kit from RimFire. The RimFire link wasn’t working this morning, so I don’t know what is going on there.

Some Suzuki bolts, washers & lock washers are spiffier looking. So I use them where they are noticeable, like on the triple tree & the ram-air cover.

When they were new, I don’t think the original Suzuki lock washers were as stiff as modern lock washers. T250/T350/GT250 carbs are spigot mounted. I’ve found that modern lock washers require way too much load to compress when using them on those carbs. Suzuki has superseded the lock washers they sold back in the day with modern versions. I’ve tried new Suzuki lock washers & they have the same problem.

BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

GT750 2x75
GT550 72 project & 75
GT380 72
T500 73 project
T350 69, 71 & 72 project
T250 72
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE

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