A few pictures of my dismantled R26 engine

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c.d.iesel
Posts: 359
Joined: Wed Aug 08, 2007 4:52 pm

motor fix

Post by c.d.iesel »

what's the story with that DELORTO carburetor ?

somone looking for S=P=E=E=D= might explain
some about all that wear?

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VBMWMO#5514- '64 R27 15K #383851 - '86 R65 22K #6128390 - Retired m/c road racer (1971-2000) - Former M-Benz Star Tech 19 years, BMW auto master tech, BMW bike cert tech 27 years. Now retired to Hillsboro, NH.

808Airhead
Posts: 1016
Joined: Wed Aug 05, 2009 9:06 pm

A few pictures of my dismantled R26 engine

Post by 808Airhead »

That is what happens when trying to rev it to 11k!!!
Thomas M.
R69s - R60/2 - R67/2 - R51/3

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eblen6882
Posts: 39
Joined: Fri Oct 27, 2006 3:00 am

A few pictures of my dismantled R26 engine

Post by eblen6882 »

The engine with the Del Orto carb had the spun crank. It's number matches the number on my frame. This bike used to do some sort of racing out of Fort Worth, Texas. It was owned by Cowtown Cycles when my Dad bought it. Did you notice the reversed shift lever?

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The top end on that engine if bored out, according to my mechanic, would leave "a stack of washers."

The engine with the trashed piston was in the bike. I'm not sure what happened to it. The bike was stored for 20 years or so and ran OK when it entered storage. At least I have one engine that can be rebuilt.
Sharon

1959 BMW R26, 2007 BMW R1200RT, 2007 Suzuki 650 DR and 2012 Yamaha Super Tenere

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eblen6882
Posts: 39
Joined: Fri Oct 27, 2006 3:00 am

A few pictures of my dismantled R26 engine

Post by eblen6882 »

The transmission.

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I asked Ron to take a look at the transmission because it didn't seem to be shifting correctly.

He had a hard time getting the transmission cover off. The bearings were corroded above the oil level, apparently from sitting for so long. He also found a broken clutch push rod.

He said the gears had a small amount of pitting, but should be fine for this bike.

Here's a shot of the bike on the lift, partially dismantled.

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Last Friday, parts started traveling; crank to the rebuilder, paintable parts to the painter. Cast parts sent out for soda blasting, certain chrome parts to the chrome shop and wheels out to be straightened to be rebuilt with new spokes.

I didn't stop in to visit last week-end, but I plan to stop by to see how things are going later this week.
Sharon

1959 BMW R26, 2007 BMW R1200RT, 2007 Suzuki 650 DR and 2012 Yamaha Super Tenere

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c.d.iesel
Posts: 359
Joined: Wed Aug 08, 2007 4:52 pm

A fAVOR TO ASK while the bike is apart on the bench?

Post by c.d.iesel »

I have a favor to ask for another poster ( kronos ) who
is looking for a GOOD well exposed photo
up under your steering head - the frame area showing
the metal tab pointing down for the coil and horn mounting-
see his thread for the discussion - while your
tank is off and the motor out of the way -
you may provide a much needed answer -
Thanks, c.d.

http://vintagebmw.org/forums/viewtopic.php?t=1406

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and thanks to US4736 fo the use of his
restoration photo - great job!!
Image[/img]
VBMWMO#5514- '64 R27 15K #383851 - '86 R65 22K #6128390 - Retired m/c road racer (1971-2000) - Former M-Benz Star Tech 19 years, BMW auto master tech, BMW bike cert tech 27 years. Now retired to Hillsboro, NH.

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eblen6882
Posts: 39
Joined: Fri Oct 27, 2006 3:00 am

A few pictures of my dismantled R26 engine

Post by eblen6882 »

c.d.: The coil on the R26 is mounted on the generator. My repair manual for R26 and R27 has two different pictures of the generator assembly, one for each bike. I was going to snap a picture from the book, but the battery in my camera is dead. Its charging.
Sharon

1959 BMW R26, 2007 BMW R1200RT, 2007 Suzuki 650 DR and 2012 Yamaha Super Tenere

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VBMWMO
Posts: 1322
Joined: Sun Aug 23, 2009 7:49 pm

A few pictures of my dismantled R26 engine

Post by VBMWMO »

I had my local independent shop mechanic take down my engine to check it out and rebuild as needed. I have the engine with numbers to match my frame:

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The idea was to take down the engine in the bike

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And rebuild using the matching numbers case. It turned out the crank has spun in the case, causing significant damage that my mechanic said couldn't be repaired. Sorry no pics, I'll take some later.

When he took down the engine in the bike, this is what he found:

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The connecting rod bearings are worn

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Valve seats worn:

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Valve guides worn:

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More later. . .
Dedicated to the Preservation of Classic and Antique BMW Motorcycles.

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