The XB4R build begins...

[wolfo68]

because my xb9 is stuck in 2nd gear lol

 

[jetlee]

You don't have to weld anything, it's slightly elongating the holes where the mount mounts to the head.

It's the only way to get the XB head to mount in a Blast frame. So far, no one that has done the swap has had any issues with their modified mounts.

 

[buellxb9rs]

well, still waiting for a few parts and waiting on a lighting tail swap. I put the plastics and everything on to see what it would look like. I sat on the bike and man, this thing is light. I know there is about 20-30 lbs of stuff still not on the bike but even after all of that it will still be really light.

 

[ezblast]

Looks cool, always thought the S tail would look better also - This would be XBBlast #7 that I know of, yeah - you think more would be made. There is a 20lb loss of weight just in switching frames and swing-arm and sub-frames, not counting lighter exhaust, no need for oil cooler, 1 less cyl./piston/head, etc. - 16 front and back would be formula, but no one does that because then front end customization comes in and starts to equal the price of the stock XB set up - I may do that - I have all the parts, just trying to find the time.
EZ

 

[ezblast]

Wolfe - that can be fixed - without splitting cases - just almost - lol
EZ

 

[squidbuellie]

i'm back, and it looks like ill be giving you a call tomorrow....
im curious to see what your going to do for the rear head motor mount.

 

[ezblast]

Skip it?
EZ

 

[buellxb9rs]

I mounted it, just as if the rear cylinder isn't there do its bolted through the the rear mount to the throttle body mount. I will take a picture to show it.

 

[ezblast]

Quick - call an ambulance - the thread is dying! - pics?
EZ

 

[buellxb9rs]

Sorry, I am just waiting for parts now, I haven't done anything with the bike in almost a week.

 

[buellxb9rs]

Okay, it's been awhile guys. A small update right now. Bike is wired, went to start engine fuel pump made a crazy noise, bike turned over, made a loud bang and I smelled something burning. I found the the problem is in the wiring harness. Sometimes the pump will come on, if not you can wiggle the pumps wires at the harness an it will work till you try to crank it... Ugh... No time to pull the harness and find the problem...

 

[loose1]

Did you change out the blast cam timing cup for a xb one?
Matt

 

[fireinxb]

I hate to be "that guy", but why? This looks like a ton of work to build a bike way slower than even an XB.. which is already somewhat sluggish compared to normal standards nowdays.

It IS ******' cool, but what do you have in mind? Max MPG?

 

[buellxb9rs]

I changed out to an xb cup and cam sensor.

And in response to fireinxb: this bike will have more power than a standar blast, look better, weight less, handle better and can easily be upgraded to a big bore and or turbo of I wanted. It's not that I don't have an xb already but this is nicer than a blast.

 

[ezblast]

Blast doesn't need an oil cooler - especially with a half quart extra capacity - a waste of weight - ditch it - lol
EZ

 

[konarider94]

any progress on this?

 

[theMelvster6]

put the turbo right where the other cylinder would have been. Looks cool Man!! I always wonder how much fab/modification it would take to put a blast motor into an xb chassis. It seems for the most part it bolts right up! I dig it!

 

[buellxb9rs]

I'm still tracking down a wiring harness short. The pump will sometimes come on if you wiggle the wires. I'm about to just buy yet another harness.

This reminds me of the Ducati a guy turned from a v-twin to a single an put the turbo where the back cylinder was an it made more power that before with 2 cylinders.

 

[grimmlock]

So did you put your blast engine into the xb9 or did you fit the headlight on your blast? Because I would really want to know if it is possible to fit a headlights fairing from an firebolt, lighteningbolt, or just somethin better looking. And if it is would like to know how to do it

 

[snrusnak]

Very cool build, I just skimmed through this thread.

Gotta ask though.....if you're going to build a xb chassis why not use the big engine and get more power? 1 cylinder can't weigh THAT much can it?

JMO without really doing a lot of research on this...