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  #1  
Old 12th April 2019, 08:07 PM
Aidanm Aidanm is offline
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Motorbike: sp2, pre-inj cbr6
Default Pulling the box out of a yank!

Been meaning to put this up for a while.
Picked up this baby off a very nice guy on here last year for a great price...
Always had a soft spot for the, unusual cool yokes
With a few issues.

It's a 08 firebolt XB12R with the newer stronger spec engine.
And a 25th anniversary model for what that's worth.

Click the image to open in full size.
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  #2  
Old 12th April 2019, 08:34 PM
Aidanm Aidanm is offline
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Motorbike: sp2, pre-inj cbr6
Default Re: Pulling the box out of a yank!

[IMG]<a data-flickr-embed="true" href="https://www.flickr.com/photos/[email protected]/46678885905/in/dateposted-public/" title="IMG-1850"><img src="https://live.staticflickr.com/7882/46678885905_27e3b1afb0_c.jpg" width="800" height="600" alt="IMG-1850"></a><script async src="//embedr.flickr.com/assets/client-code.js" charset="utf-8"></script>[/IMG]
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  #3  
Old 12th April 2019, 09:35 PM
DavyH DavyH is online now
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Motorbike: Cb,Vtr,Xrv,Nt
Modifications: A few bits and pieces!
Default Re: Pulling the box out of a yank!

Link no work
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  #4  
Old 12th April 2019, 09:53 PM
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Gixxer Gixxer is offline
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Motorbike: NSU Quickly
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Default Re: Pulling the box out of a yank!

Originally Posted by DavyH
Link no work
Link work fine. Right click, open in new window/tab.

Click the image to open in full size.
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  #5  
Old 12th April 2019, 10:44 PM
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manbearpig manbearpig is offline
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Motorbike: giant mtb
Modifications: front disc brakes
Default Re: Pulling the box out of a yank!

Savage bike Aidan- manage to get it sorted?
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  #6  
Old 12th April 2019, 10:51 PM
DavyH DavyH is online now
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Motorbike: Cb,Vtr,Xrv,Nt
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Default Re: Pulling the box out of a yank!

Originally Posted by Gixxer
Link work fine. Right click, open in new window/tab.

Click the image to open in full size.
Super

Nice yoke,oil in the swingarm and fuel in the frame?
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  #7  
Old 13th April 2019, 09:37 AM
Rockster Rockster is offline
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Motorbike: CB 1300, Suzuki gn 125
Default Re: Pulling the box out of a yank!

Savage machine. You've got the newer thunderstorm motor - supposedly this sorted the oil pump problems on the previous generation bikes.
Had a Buell for a couple of years and still have fond memories of it. Loads of character but lots of "issues".
Keep an eye on the drive belt, mine snapped leaving me stranded. You can get a spring mounted tensioner which is supposed to give the belt an easier time.
Beware of leaving it idling on the sidestand as mine vibrated itself into a horizontal position. I kid you not - parked on flat ground with stand properly deployed, it just fell over!
If funds would allow i'd have another in a heartbeat. Well ware....
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  #8  
Old 13th April 2019, 07:58 PM
Aidanm Aidanm is offline
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Motorbike: sp2, pre-inj cbr6
Default Re: Pulling the box out of a yank!

Originally Posted by manbearpig
Savage bike Aidan- manage to get it sorted?
Thanks, yep she's 100% now on factors except a few cosmetics...
I'll be throwing all the details and pics here as I get time

Originally Posted by DavyH
Super

Nice yoke,oil in the swingarm and fuel in the frame?
Yep

Originally Posted by Rockster
Savage machine. You've got the newer thunderstorm motor - supposedly this sorted the oil pump problems on the previous generation bikes.
Had a Buell for a couple of years and still have fond memories of it. Loads of character but lots of "issues".
Keep an eye on the drive belt, mine snapped leaving me stranded. You can get a spring mounted tensioner which is supposed to give the belt an easier time.
Beware of leaving it idling on the sidestand as mine vibrated itself into a horizontal position. I kid you not - parked on flat ground with stand properly deployed, it just fell over!
If funds would allow i'd have another in a heartbeat. Well ware....
Yeah I witnessed that the day i picked it up, standing chatting and it slowly idled it's way off down the driveway
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  #9  
Old 13th April 2019, 08:09 PM
Aidanm Aidanm is offline
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Motorbike: sp2, pre-inj cbr6
Default Re: Pulling the box out of a yank!

First thing was to sort the shock!
Considered fancy (expensive) aftermarket, but the stock seems like a decent unit (SHOWA) so got a second hand one shipped in from the states in good nick for great money.
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  #10  
Old 13th April 2019, 08:23 PM
Aidanm Aidanm is offline
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Motorbike: sp2, pre-inj cbr6
Default Re: Pulling the box out of a yank!

Meant to say first...

When i picked it up I knew it had the following problems:
Rear shock blown.
Gearbox jumping out of third gear under power, which was gonna need a full tear down to fix.
And after a few spins I also found the fuel map was pretty bad.

Then the positives I found!
Later spec ECU which is equivalent to an EBR racing one except not preloaded with race map.
It has a Drummer SS exhaust worth a nice few quid.
K&N with an opened up airbox.
Quick throttle, although could do with being quicker again, especially compared to jap bikes.
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  #11  
Old 13th April 2019, 11:46 PM
DavyH DavyH is online now
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Motorbike: Cb,Vtr,Xrv,Nt
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Default Re: Pulling the box out of a yank!

Iíve yet to drive one properly. Iíve driven about 200 meters on one with new tyres....so not exactly conclusive it did seem fun,and I love the radical ideas with weight distribution and keeping things compact. He had a job on his hands making a Harley motor fit and work in a small chassis like that
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  #12  
Old 14th April 2019, 12:45 AM
b.c b.c is offline
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Default Re: Pulling the box out of a yank!

Nice bike, had a spin on one a while back but didn't get to buy it
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  #13  
Old 14th April 2019, 11:56 AM
Aidanm Aidanm is offline
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Motorbike: sp2, pre-inj cbr6
Default Re: Pulling the box out of a yank!

With the rear shock sorted, next thing I went at was the map.
The great thing about the Buell's is that you can remap them using several free software options.
I chose 'Tuner pro RT' which is fairly straight forward if you have some understanding of what you are doing.
There are profiles written for the software specifically for Buell's that assigns all the data so you know what you are modifying.

For a few quid I bought the necessary connector and soldered on an RS232 USB converter to talk to the bike...

Hopefully this pic works!

Click the image to open in full size.
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  #14  
Old 14th April 2019, 12:02 PM
Aidanm Aidanm is offline
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Motorbike: sp2, pre-inj cbr6
Default Re: Pulling the box out of a yank!

Seat of the pants told me that it wasn't getting enough juice at medium throttle openings as it felt starved until you really wound the throttle open, so I started enriching by extending the injector duration. The pic below shows what that looks like.
The top row is revs, and the left column is throttle opening as read from the TPS.
Then there are also scalars for engine and air temp and o2 feedback but I won't go into those.
So basically a higher number in any box is a longer injector opening for that given throttle position and rpm.

Click the image to open in full size.
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  #15  
Old 14th April 2019, 12:07 PM
Aidanm Aidanm is offline
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Motorbike: sp2, pre-inj cbr6
Default Re: Pulling the box out of a yank!

Cool fast and furious 3d view looks like this...

Click the image to open in full size.

Interestingly front and rear cylinders need different maps because of different temps of the cylinders and different characteristics due to different exhaust headers.
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  #16  
Old 14th April 2019, 12:10 PM
Aidanm Aidanm is offline
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Motorbike: sp2, pre-inj cbr6
Default Re: Pulling the box out of a yank!

Also later model ECU's have better resolution, so more columns and rows, meaning a smoother map.

With a bit of trial and error, and examining a few maps kindly donated to me from Buell forums, I got it to where it was running sweet.
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  #17  
Old 14th April 2019, 12:16 PM
Aidanm Aidanm is offline
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Motorbike: sp2, pre-inj cbr6
Default Re: Pulling the box out of a yank!

With that done it was done it was time to examine her box.

While I had my suspicions as to the issue, rather than take it all apart, examine the unknown damage and then spend ages trying round up the necessary parts from a dealer network that barely exists. I found a complete low mileage gear and shifter set in the states for great money.
Couple of weeks later this arrived, and upon inspection was everything i had hoped for.

Click the image to open in full size.
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  #18  
Old 14th April 2019, 12:21 PM
Aidanm Aidanm is offline
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Motorbike: sp2, pre-inj cbr6
Default Re: Pulling the box out of a yank!

Next was to get the motor out...

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Despite my best efforts, one of the exhaust studs snapped
Harley's are notorious for it, so that would have to be sorted too.
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  #19  
Old 15th April 2019, 07:38 AM
Rockster Rockster is offline
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415 posts since May 2011
Motorbike: CB 1300, Suzuki gn 125
Default Re: Pulling the box out of a yank!

Thats some going fair play to ya. Are you going to change the cylinder hear gaskets while you have the engine out? This was another issue on the older motor.
Also that drummer exhaust WILL drive you nuts eventually, id say its well load...
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  #20  
Old 15th April 2019, 11:36 AM
Aidanm Aidanm is offline
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Motorbike: sp2, pre-inj cbr6
Default Re: Pulling the box out of a yank!

Originally Posted by Rockster
Thats some going fair play to ya. Are you going to change the cylinder hear gaskets while you have the engine out? This was another issue on the older motor.
Also that drummer exhaust WILL drive you nuts eventually, id say its well load...
I got a complete new OEM Buell gasket and seal kit from the states.
Which ended up costing me more than the gear set

Also new shifter rod bushing which isn't included in the gasket kit, and gearbox bearings.
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