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Old 09-26-2011, 08:12 PM   #481
blaine.hale OP
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I have a boyer
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Old 09-26-2011, 08:15 PM   #482
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Old 09-26-2011, 08:16 PM   #483
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I've done several restorations mostly scooters , every time I finish one I swear I'll never do another .
Some how no matter what there is always one more thing ,and then another and another and
another etc etc . It takes a lot of patience which I often run out of , good job and try to stay patient .

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Old 09-27-2011, 07:39 AM   #484
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Quote:
Originally Posted by bgoodsoil View Post
I feel like I'm venturing into your realm of expertise Brad.
That's a good thing, I think?
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Old 09-27-2011, 07:46 AM   #485
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Originally Posted by blaine.hale View Post
I feel like I'm venturing into your realm of expertise Brad.
That's a good thing, I think?
Don't Buy From Brad!

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Old 09-27-2011, 09:45 AM   #486
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I hear you aren't supposed to ride with Brad either.
What does one do with Brad?
But I digress.
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Old 09-27-2011, 10:26 AM   #487
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I hear you aren't supposed to ride with Brad either. What does one do with Brad?
Just keep your eye on him ... from a safe distance of course.

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Old 09-27-2011, 03:35 PM   #488
blaine.hale OP
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Ya'll should stop by tonight! I'm going to drill that cam and some how pull the bolt from the crank ;)
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Old 09-27-2011, 04:13 PM   #489
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...and some how pull the bolt from the crank ;)
I vote thread it IN a little bit. It should get all loose and wiggly when you thread it in a little. Straighten it out and carefully thread it OUT.
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Old 09-27-2011, 06:30 PM   #490
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Just finished the drilling and tapping of the cam. I don't think it came out PERFECT but we'll see when I crank it.
The crank bolt was stubborn. Turns out it wasn't boogering the threads, it was off the actual crank and was just bent so much that it was wedged against the rotor. Popped the rotor right off and cut the bolt head off and it slid right on out.
If I could find my spare rotor bolt, I could crank this girl tonight!
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Old 09-27-2011, 06:46 PM   #491
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Quote:
Originally Posted by blaine.hale View Post
Just finished the drilling and tapping of the cam. I don't think it came out PERFECT but we'll see when I crank it.
The crank bolt was stubborn. Turns out it wasn't boogering the threads, it was off the actual crank and was just bent so much that it was wedged against the rotor. Popped the rotor right off and cut the bolt head off and it slid right on out.
If I could find my spare rotor bolt, I could crank this girl tonight!
I have several Rotor Bolts on the shelf ...

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Old 09-27-2011, 07:13 PM   #492
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Originally Posted by Beater View Post
I have several Rotor Bolts on the shelf ...

I've scoured my entire house. I'll be texting you!
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Old 09-27-2011, 07:29 PM   #493
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Ya'll should stop by tonight! I'm going to drill that cam and some how pull the bolt from the crank ;)
Crap! I wish I had seen this earlier.

Quote:
I feel like I'm venturing into your realm of expertise Brad.
That's a good thing, I think?
You may get a Reckless Wreching charge for cam screwing According to MaxBMW that ticket'll cost you $257.77 plus bearings.
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Old 09-28-2011, 10:02 PM   #494
blaine.hale OP
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The r90 is back up and running again.
It's running strong with the exception that it backfires pretty bad on deceleration.
Beater and I think it could be something to do with the newly drilled/tapped hole in the cam and the bolt be slightly off.
That sounds right, but the magnet plate for the boyer rotates off the cam so it shouldn't be going in an irregular shape though the bolt may be causing it to wobble ever so slightly?
The bolt head is slightly off when the engine is running and the cam is spinning...so I know it's not PERFECTLY centered.
Maybe it's just a bad ignition period and I should test out points to see if I get the same results?
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Old 09-28-2011, 10:19 PM   #495
bgoodsoil
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Beater and I think it could be something to do with the newly drilled/tapped hole in the cam and the bolt be slightly off.
I could see that. Let's say the wobble on that points plate causes you to fire too late and you don't burn all the fuel. When your sparkplug's mounted all the way at one end of the cylinder that'd be easy, hence all that dual-plugging. Anyways, so that unburnt fuel goes into the exhaust pipe and blows up. Hey, loud pipes save lives right? :ymca It's your bike so you'd know better than anyone--does it pull as hard as before? If you're not burning all your fuel I'd think you'd notice. Your bike should be fully advanced by, what, 4,000 rpm? Maybe it has something to do with the timing going off during the advance?

Or say screw the timing and turn your idle mixture up. Maybe it's fuel-related despite the fact that you're having ignition issues. It doesn't take long to turn a screw and rule that out.

If this is a result of an off-center hole I think A-Dubb's got your answer--a crank mounted ignition. As it happens, we haven't had a good inmate review of the Enduralast ignition.

On the other hand, Backfire isn't such a bad nickname
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