Broken Crankcase 2002 Bonneville - Page 3 - Triumph Forum: Triumph Rat Motorcycle Forums
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post #21 of 91 (permalink) Old 03-06-2012, 10:31 PM
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By the time you buy a new cover and have the case repaired...I'd find an 865 and swap out. In the process you gain a little cubes.
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post #22 of 91 (permalink) Old 03-07-2012, 02:35 PM
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I really wouldn't mess with welding the crankcase.

"If you will it Dude, it is no dream"

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post #23 of 91 (permalink) Old 03-07-2012, 03:48 PM
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Originally Posted by ScramblerKidd View Post
By the time you buy a new cover and have the case repaired...I'd find an 865 and swap out. In the process you gain a little cubes.
And swap the 790 cams into it... then you have the best of both (OEM) worlds!

I know it seems like a lot of expense... but overall, buying a clean, low mileage used engine from Pinwall is the best option... the freight can be a bit of a bugger... but you get an easy swap out fix and can "buy back" years and miles by buying a newer, lower mileage engine than is in there now...
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post #24 of 91 (permalink) Old 05-11-2012, 03:59 PM Thread Starter
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Problem resolved

Today I fixed the problem with a pin through the shaft that fits the starter gear. I got a used clutch cover from Pinwall for $60. I still drilled the cover 1/4 inch. The drilled hole in the crankcase is about 3/8 inch. I've started the bike a dozen times and it sounds strong.

Thanks, very much, everyone for the help.

Regards,
Bonavent
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post #25 of 91 (permalink) Old 05-11-2012, 09:38 PM Thread Starter
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Thanks Max

Thanks Max. Your PM file is full.
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post #26 of 91 (permalink) Old 05-12-2012, 10:13 AM
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Kudos for getting it fixed
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post #27 of 91 (permalink) Old 05-12-2012, 05:15 PM
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Good deal hope it last for you man.

Why do I feel young on my bike
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post #28 of 91 (permalink) Old 11-09-2012, 04:18 PM
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Mine has broken too... it's the only thing that made me reluctant to buy a twin in the first place (apart from the coils, and igniter, which have all had to be replaced).

I'm planning to attempt to fix it with the drill bit mod tomorrow.

98 Thunderbird, 03 Speed Master
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post #29 of 91 (permalink) Old 06-16-2015, 08:53 PM
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Red face

Hey, I have a cracked piece in same place as the gentleman in this string. Fell on right side but starter gearshaft area on left is what's cracked. Looking at replacement engines on eBay for my 2005 Speedmaster for around 1500-1700. One is from Pinwheel. If you're saying you've not had problems with them, that's very heartening. I'm going to give them a try. Thanks!

Attaching pictures that were just taken from my 2005 Speedy with 39,000 miles. Actually laid it over (not going very fast) on RIGHT side, but then when I tried to start, it seemed like a starter issue, and lo and behold the same type of break as the other pics on here. I'm interested in getting a Pinwheel replacement engine, but then again -- wonder if the same thing could happen??
Attached Thumbnails
Click image for larger version

Name:	Speedmaster case crack.jpg
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ID:	271386   Click image for larger version

Name:	Speedmaster cracked piece.jpg
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Size:	29.0 KB
ID:	271394  

05 Speedy / Kuryakyn Iso Grips / RivCo risers / AI removed / snorkel removed / stock pipes drilled out through 2 layers / bottom of air box drilled out.
"I haven't a particle of confidence in a man who has no redeeming petty vices." - Mark Twain

Last edited by Mettlehed76; 06-16-2015 at 09:09 PM. Reason: adding attachments
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post #30 of 91 (permalink) Old 06-16-2015, 10:17 PM
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Quote:
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-- wonder if the same thing could happen??
It could unless you install this preventive item, TTP's "safe start" reinforcing piece:

http://www.triumphtwinpower.com/ttp-safe-start.php
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