Blue Haze - a two-stroke miscellany
- Thread starter stroker crazy
- Start date
Lots of innovation there. Hub center steering, triangulated front end, low low bars. Looks like a Suzuki Cobra top end but is that a side mounted ie rotary valve carb I see there? Not necessarily the way that drag bike design evolved but interesting to see what was tried.
hooligan998
Been Around the Block
HURCO550 said:.
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Fuggin cool as shite. Got more info on it?
stroker crazy
crazy as a fox
teazer said:
Something like that could be useful on the salt.
Crazy
haha
CarbsAndCylinders
Careful With That Axe Eugene
Went up to a memorial service for a snowmobile buddy of ours who recently passed of cancer. Many people showed up in all manner of vehicles, but this one obviously caught my eye. All original first year buffalo. Survivor barn find with somewhere around 7k miles. Not perfect, but a very neat bike!
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Amazing work. Can someone explain what he has done and why?
It looks like he took two sets of TZ250G barrels (with fat intake ports stock) and welded in a bridge in the intake and then added reed boxes and rear boost ports.
On the exhaust side he appears to have added a pair of eyebrow ports for more initial time-area and more blowdown T-A. And he's machined up some new studs to provide space for those extra ports. But the exhausts are extremely wide and those oval outlets are not stcok on those barrels. That's an interesting mod.
The reshaped front (main) transfer port was either been welded to allow sufficient bridge to the exhaust ports or has been raised and that would be unusual, so I'm guessing they were also welded.
The welding along the front lower flange and machined away water jackets are very interesting. Is he running it dry and arranging to have forced air to stop it melting on a long run? That I don't get. on an LSR bike, weight is less important that power and drag, so there's some thinking that isn't obvious. If it's to be aircooled, would it not be easier to start with an RD250 barrel or would that need even more welding and machining to work?
It looks like he took two sets of TZ250G barrels (with fat intake ports stock) and welded in a bridge in the intake and then added reed boxes and rear boost ports.
On the exhaust side he appears to have added a pair of eyebrow ports for more initial time-area and more blowdown T-A. And he's machined up some new studs to provide space for those extra ports. But the exhausts are extremely wide and those oval outlets are not stcok on those barrels. That's an interesting mod.
The reshaped front (main) transfer port was either been welded to allow sufficient bridge to the exhaust ports or has been raised and that would be unusual, so I'm guessing they were also welded.
The welding along the front lower flange and machined away water jackets are very interesting. Is he running it dry and arranging to have forced air to stop it melting on a long run? That I don't get. on an LSR bike, weight is less important that power and drag, so there's some thinking that isn't obvious. If it's to be aircooled, would it not be easier to start with an RD250 barrel or would that need even more welding and machining to work?
Short answer is yes, but how strong do they need to be? I don;t know but I am guessing that Jeff Henise will soon find out. He still has to cut or roll threads and work out what he's doing about the sleeve nuts. My guess is he won't use them but will use simple nuts on top of the head.
Those studs look more like 10 or maybe 12mm diameter so it's also possible that he moved them slight outwards at the same time as going up from stock 8mm. The cutaways look to be in odd places and direction but we can't see the ports in relation to them
Those studs look more like 10 or maybe 12mm diameter so it's also possible that he moved them slight outwards at the same time as going up from stock 8mm. The cutaways look to be in odd places and direction but we can't see the ports in relation to them
