| Author |
Message |
    
Diablobrian
| | Posted on Friday, September 23, 2005 - 06:33 pm: | 
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Hello, I just got done talking to Jerry Galagan at Hal's.
It turns out my 'bolt is a rare breed of duck indeed.
He says my bike was built prior to the introduction of the xb12. They built their own in the interim....My bike.
They made the spacers etc. to put an X1 crank (3.8125 stroke) in my 9r. making it into a 1250.
It has been a while, but he said that he thought they had done quite a bit of porting work as well.
I also have a programmable ecm in my bike. These tests were done with a K&N filter, and a Jardine pipe. everything else basically stock.
the quality of the image isn't great since it was faxed to me.
I know this does not have A/F ratios (because no map is THAT good), or rpms but I will be dyno testing again in the not too distant future so bear with me.
max HP 99.79, max torque 86.86
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Diablobrian
| | Posted on Friday, December 16, 2005 - 09:09 pm: |
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I found another dyno sheet for my bike that has the a/f ratio on it. This is still an older one, 99.31 max rwhp, 87.27 torque
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Diablobrian
| | Posted on Monday, January 16, 2006 - 04:35 pm: |
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Here are the build sheets delivered with the bike.
I have higher resolution images if any one is interested. |
Treadmarks
| | Posted on Tuesday, October 16, 2007 - 12:45 pm: |
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Pretty cool setup Brian.
I just did my Uly with the 1250 and NRHS stage 1 head porting with the map from Al/Terry from American Sport Bike. The micron and open air round it out really well. Watch out for those surprise wheelies! |
Alex
| | Posted on Wednesday, October 17, 2007 - 02:38 am: |
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Brian,
can You explain to me why You call it a stroker engine and why it has 1250cc?
I imagine You call it a stroker as it has more stroke than a stock XB9. But it still has the same stroke as an XB12 which makes it a 1200cc engine as long as You use stock cylinders.
Or is it that You use 1250 big bore cylinders?
Regards
Alex |
Diablobrian
| | Posted on Wednesday, October 17, 2007 - 04:56 pm: |
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My motor was built by Hal's before the release of the XB12.
They modified an X1 crank to get the longer stroke, and also did a small over-bore, but retained the high dome style pistons.
I termed it the way I did (as a stroker) not to mislead anyone about it being a longer stroke than a 12, but because
I didn't want to label it as an 03 XB12 and have 10 people post about the XB12 not coming out until 04 etc.
Terry G at Hal's has all of the details on what was done to the motor internally. I talked him a few about it, and got
an over-view of what exactly was done to my new prize posession. I then posted this thread shortly after we talked.
The guys at Hal's Performance advantage are top notch and I'm sure they'd have no problem talking about what they
did. They remember my bike, it seems that it was a labor of love when they built it. I'm guessing that they had a
lot more into it than they got for it. It was built so that they could show off a bit (It's hard to demo a pure race bike) 
They also seemed happy to see it still on the road when I started going to homecoming in 06. The guy that bought it
from them put VERY few miles on it while he had it, (more in love with the idea of riding than actually doing it) and
when it disappeared completely they feared it had died at the hands of an un-worthy rider.
The bike itself was an object of lust for a lot of people while it sat in the showroom apparently, my friend Steve_Mackay
claims to have spent a lot of time fantasizing about my bike back when I was un-aware it existed.
Maybe this homecoming Steve will finally get a chance to ride it . The pre-flight is always interesting on my bike
because there is no shift lever any more, but that's another story. |
Sweatmark
| | Posted on Thursday, October 18, 2007 - 12:15 pm: |
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Diablo-
Great info & thanks for telling the story. Yeah, your bike's definitely one of a kind, even more so with your personalized electroshift setup!
"Bore & stroke" - classic hot rod karma. Can't wait 'til my little XB9 grows up into a 1250 too. |
Sweatmark
| | Posted on Thursday, October 18, 2007 - 09:49 pm: |
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Brian-
Forgot to ask, any idea of the compression ratio for your Hal's 1250 setup? Those RWHP and torque numbers are exactly what I'd like to see with a 1250 build.
In my case it'll be an XB12 crank plus one of the 3-9/16 big bore kits. If possible, I'd like to keep the XB heads stock to keep costs down. |
Diablobrian
| | Posted on Friday, October 19, 2007 - 12:26 am: |
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11.43:1 is the cr that Terry quoted me. 93 octane is what I run. I only use 91 in emergencies to avoid problems with
detonation/pinging.
If you look at the "build sheets" you'll see that they did a Serdi valve job on my heads, as well as porting. Do not
underestimate the value of quality head work, especially if you intend to use different cams. The XB heads aren't bad
stock, but there is certainly room for improvement.
Your motor is essentially an air pump and HP is limited by how much air you can into and out of the cylinders.
I'd bet you could get a really good deal on head work through Halpa.com, or cyclerama (Wes is very good) you
don't want to cut a corner when you've already got the motor out of the bike and apart. Hopefully it isn't something
that happens to you on a routine basis! |
Sweatmark
| | Posted on Friday, October 19, 2007 - 11:50 am: |
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That 11.43 CR would seem to fit the dyno results. Guess I'll make due with less power using lower CR, in order to keep octane requirement lower... fear of future crap-gas.
Yep, no questions that good flow work has its value. A modest budget will keep my motor build simple: just the bore & stroke mods, my own wrenching, plus the tuning time and necessary tuning electronics. Maybe a future phase of engine mods will address headwork + cams. |
Diablobrian
| | Posted on Friday, October 19, 2007 - 04:46 pm: |
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Be sure to check the clearance and set squish when you assemble the motor! I'd assume you've done a similar tear
down before, even so it doesn't hurt to have a reminder.
I know how much satisfaction I get out of wrenching on my own bikes, so I can see where you're coming from on that,
and I also understand being on a limited budget.
Don't be afraid to ask for pointers from the pros here on badweb (and ignore the wannabes) about engine mods, they
are usually more than willing to help out a badwebber in need of advice. A "simple bolt-on kit" sounds less involved
than what it is when it comes time to do the work. Be prepared to install and remove the heads multiple times
when determining how thick your gaskets need to be and if you need to have the piston valve pockets relieved. |
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2003 xb9r (stroker) Jardine, race ecm