Rotax 650 Engine Rebuild (BMW) - Page 4

CollinsB · 12-26-2012, 08:44 AM

Great report! Thanks for taking the time to post up and share!

ericsbr · 12-26-2012, 10:42 AM

Quote:

Originally Posted by 20Fingers

Its going to be my first long trip destination when the snow clears this spring, have to come out n see you and my old beast! It's amazing that she was till running with the broken piston! BMW quality! Happy to know that you don't have a bottom end issue as we thought, upper end rebuilds should be a bit easier but then again, were did the broken bits end up??? Cheers, and look forward to seeing more as you go! MC aka 20Fingers

Hey MC,

glad to have you tuned in! we're having a blast with the bike rebuild. it'll be back in top shape for spring, maybe we'll head over your way for the first adventure ride!

Eric

Kiwi Tinkerer · 12-26-2012, 12:42 PM

Hey, you've gone this far. You could go with one of the long stroke cranks and/or big bore barrel. I think you can go out to 850cc and near on 80hp using both. yes, I know it defeats the whole purpose of the bike; moderate power and good economy. I'll see if i can find the link.
This engine is used in the bombardier DS650 quad bike. So there are a number of hot up options.

Kiwi Tinkerer · 12-26-2012, 01:04 PM

I googled ds650 performance.
Oh, and it is Can-Am ds650. (By bombardier)

These guys do piston kits, gaskets etc: http://www.ctracing.com/ds6501.htm
Ah, here is the 800cc kit. ( I was nearly right): http://www.omwracing.com/engines_rotaxds650.htm

You'd have to figure out the injection and timing. But would be a fun project.
There are plenty more to choose from . Might be a good place to look for gaskets.

Anyway, just FYI.

divimon2000 · 12-27-2012, 06:27 AM

Thanks for posting that info, someone may be interested. We're going stock for cost and reliability. I personally love the gas mileage and reliability of the factory set up.

Hope those parts come in soon!

divimon2000 · 12-27-2012, 06:32 AM

20 Fingers, excellent info. Its nice to have a post that is well rounded; now most of the "T"'s are crossed and "i"'s dotted for the next poor SOB! Looks like you made out just dandy. WHat a bike. Yes, come here or we'll plan our first adv via maine to NB, etc. I'm still riding here (not today).

20Fingers · 12-31-2012, 12:14 PM

I have TONS of camping space and you can have access to a kitchen n potty (of course)...it's a heck of a place to call home and near perfect for a few (20+ eveb) bikes to stop over...anytime! Just give me some lead time to we can prepare!

Cheers
20Fingers

ericsbr · 01-06-2013, 01:45 PM

Box-0-Parts!

Several OEM BMW engine parts arrived yesterday. A few are still backordered.

ericsbr · 01-06-2013, 02:50 PM

New water pump seals from Rotax!

Cal · 01-06-2013, 03:31 PM

Quote:

Originally Posted by ericsbr

New water pump seals from Rotax!

Can you post where you bought the WP seals please. They appear to be of a different material than the ones from the dealer?

ericsbr · 01-06-2013, 04:08 PM

Quote:

Originally Posted by Cal

Can you post where you bought the WP seals please. They appear to be of a different material than the ones from the dealer?

I got these from a rotax dealer since BMW only sells a WP kit which includes a shaft and impeller (mine were OK). The guy told me these were the new design rotax W/P seals, part number 230195. (old number 230196). http://www.crg-america.com/kart-part...20(FR%20DD2%20...

They are used in a rotax racing kart engine (FR125). it has the same water pump design as the f650.

#35 in this picture- http://www.crg-america.com/kart-part...-54%2049%204x1

Cal · 01-06-2013, 07:23 PM

Quote:

Originally Posted by ericsbr

I got these from a rotax dealer since BMW only sells a WP kit which includes a shaft and impeller (mine were OK). The guy told me these were the new design rotax W/P seals, part number 230195. (old number 230196). http://www.crg-america.com/kart-part...20(FR%20DD2%20...

They are used in a rotax racing kart engine (FR125). it has the same water pump design as the f650.

#35 in this picture- http://www.crg-america.com/kart-part...-54%2049%204x1

I had seen that site before but was not in the market at that time for seals. I am one of the ones with a wonderful seal eating machine!!

..... although I changed the clutch side cover 24000kms ago and it seems to be only a drop or so after sitting for awhile which now seems normal. Before the side cover change I went through 4 water pump kits all under warranty, the 5th kit is when we changed the cover and another shaft and seal. I was long past warranty but BMW covered it under their goodwill program.
I'll pick up a set of these seals for my travell spares, Thanks

FolkGirl · 01-14-2013, 08:06 AM

Just tuning in from the virtual ADV couch. Nice bike, Eric! I am partial to that color

Steve, saw your Dakar in traffic over the weekend in B-Town! Mine is snowbound in the backyard shed

divimon2000 · 01-14-2013, 03:17 PM

Quote:

Originally Posted by FolkGirl

Just tuning in from the virtual ADV couch. Nice bike, Eric! I am partial to that color

Steve, saw your Dakar in traffic over the weekend in B-Town! Mine is snowbound in the backyard shed

Bout time! Let me know if you want to come over for the "put it back together days" coming up early Feb.

Yeah, riding in town Sunday was like a major training class in dodging the other guy, what a mess. But it was fun!
At Co-op:

Is it OK to park in "Bike" stalls?

So far I have more riding days in this winter than my buddy with his snowmobile. I think I can win by a longshot.

FolkGirl · 01-15-2013, 06:47 AM

Yeah, love to watch/help that go back together. Keep me posted.

12-26-2012, 08:44 AM	#46
CollinsB Studly Adventurer Joined: Aug 2003 Location: Orange Co., CA. Oddometer: 824	Great report! Thanks for taking the time to post up and share! __________________ Brian BMW 1200GS ADV Husqvarna TE510 Aprilia RXV 550 Kaw Brute Force V750

12-26-2012, 12:42 PM	#48
Kiwi Tinkerer Ross Joined: Sep 2007 Location: Wellington, New Zealand Oddometer: 266	850? Hey, you've gone this far. You could go with one of the long stroke cranks and/or big bore barrel. I think you can go out to 850cc and near on 80hp using both. yes, I know it defeats the whole purpose of the bike; moderate power and good economy. I'll see if i can find the link. This engine is used in the bombardier DS650 quad bike. So there are a number of hot up options.

12-26-2012, 01:04 PM	#49
Kiwi Tinkerer Ross Joined: Sep 2007 Location: Wellington, New Zealand Oddometer: 266	Here you go I googled ds650 performance. Oh, and it is Can-Am ds650. (By bombardier) These guys do piston kits, gaskets etc: http://www.ctracing.com/ds6501.htm Ah, here is the 800cc kit. ( I was nearly right): http://www.omwracing.com/engines_rotaxds650.htm You'd have to figure out the injection and timing. But would be a fun project. There are plenty more to choose from . Might be a good place to look for gaskets. Anyway, just FYI.

12-27-2012, 06:27 AM	#50
divimon2000 ^OP Gnarly Adventurer Joined: Apr 2011 Location: Lake Champlain, Vermont Oddometer: 410	Thanks for posting that info, someone may be interested. We're going stock for cost and reliability. I personally love the gas mileage and reliability of the factory set up. Hope those parts come in soon! __________________ F650 GS 2001 F650 GS DAKAR 2002 at least one should be running

12-27-2012, 06:32 AM	#51
divimon2000 ^OP Gnarly Adventurer Joined: Apr 2011 Location: Lake Champlain, Vermont Oddometer: 410	20 Fingers, excellent info. Its nice to have a post that is well rounded; now most of the "T"'s are crossed and "i"'s dotted for the next poor SOB! Looks like you made out just dandy. WHat a bike. Yes, come here or we'll plan our first adv via maine to NB, etc. I'm still riding here (not today). __________________ F650 GS 2001 F650 GS DAKAR 2002 at least one should be running

12-31-2012, 12:14 PM	#52
20Fingers RabidF650GS Joined: May 2011 Location: Riding Maine 365 Oddometer: 21	Me there, or you guys over here... I have TONS of camping space and you can have access to a kitchen n potty (of course)...it's a heck of a place to call home and near perfect for a few (20+ eveb) bikes to stop over...anytime! Just give me some lead time to we can prepare! Cheers 20Fingers __________________ Per aspera ad astra... www.rabidpixels.org F650GS 2012 Special Edition nearly farkled and always looking for new ideas!

01-06-2013, 01:45 PM	#53
ericsbr Adventurer Joined: Jun 2012 Location: NY Oddometer: 22	Box-0-Parts! Several OEM BMW engine parts arrived yesterday. A few are still backordered. ericsbr screwed with this post 01-06-2013 at 02:56 PM

01-06-2013, 02:50 PM	#54
ericsbr Adventurer Joined: Jun 2012 Location: NY Oddometer: 22	New water pump seals from Rotax!

01-14-2013, 08:06 AM	#58
FolkGirl Guitar Slinger Joined: Aug 2008 Location: Vermont Oddometer: 108	Just tuning in from the virtual ADV couch. Nice bike, Eric! I am partial to that color Steve, saw your Dakar in traffic over the weekend in B-Town! Mine is snowbound in the backyard shed __________________ takin' the long way home http://advrider.com/forums/showthread.php?t=782103

01-15-2013, 06:47 AM	#60
FolkGirl Guitar Slinger Joined: Aug 2008 Location: Vermont Oddometer: 108	Yeah, love to watch/help that go back together. Keep me posted. __________________ takin' the long way home http://advrider.com/forums/showthread.php?t=782103

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: .
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode