Muncie

Took 6 hours to fix this but its alive again. The big wave rotor on the brakes ended up been way to big so i bought a smaller one and a new carrier got choppy with the dildo saw. Second attempt at a Kimjon spec "sprotar" this time it worked i slipped tube into the new carrier and drive the 2 halves of axle in with a 8 pound sledge then welded it. This process took ages as i had the same 5mm runout again but i knew everything was driven in straight. I ended up finding the longer side was bent at the carrier i cut it bent it and welded it boom no runout! Yus.

Rough as fuck found a chair id chopped legs of ages ago for some tube for something random.... Anyway made a very rough but actually not horrible to sit on squab has a bit of foam padding.

Discovered as much fun as standing up is when the front wheel comes up you want to sit your ass down real fast, Only problem is you had a choice of the SU carby or the exhaust to sit on so i started scratching my head and remembered i still have factory airbox. Typical honda its so over engineered you can drop a bomb on it........ or a 90kg human. TLDR ? I threw the guts out few nips with grinder and it now fits and doesn't interfere with the carbs return springs, surprisingly makes a good seat. Will add some foam and a vinyl cover job done

Lay it out on the floor in an imaginary motorbike shape it'll come to you rather quick.

You'll have this ready for cert by end of this lockdown. Good shit!

Did pointless shit this morning..... got up at 5am so i don't end up sleep fucked when i start my new job on 14th. Hopefully can use this as lunch bar transport. Headlights for no real reason other than i had soldering iron plugged in and got carried away. Oh and fixed the dodgy deck that sat jacked up for ages after i welded bracket in wrong place a year ago. If i bung indicators and a tail light on and sneeze a bit im sure i can get this registered.

Did the valve lash adjustment set gaps on plugs got it all spot on. They were tight infact probably holding valves open slightly on rear cylinder, As expected its spot on now absolutely sings crisp and happy, i mowed the lawn with it today in lieu of a blat up road. I really want to throw a grumpy cam in it.....

Way of the future man. Just a pity the driveline adds up so quickly when you use these engines If i had a lathe I'd chuck a front wheel drive gearbox on it..... or a harley gearbox.

As a bonus bores look mint and have no lip no slop in pistons. Certainly sounds way happier really thumpy out the exhaust and snappy on the throttle. Still think it could benefit from electronic ignition as the rear cylinder seems to die off at a low idle it comes in and out probably a slightly sad coil. For now I'll just run a higher idle. Any geniuses know how i can make a coil on plug conversion?

Boom it runs! Took all the sharp edges out of inlet as well but overall these heads were mint! Lapping in valves took some work but did eventually come up really good. Started first pop normally takes some cranking. The part thats been attacked with the angry end was a hard edge that extended out really choking the exhaust. Once i had that opened up and smoothed out the rest of the port was actually pretty good, i opened up the port at the flange to match the exhaust and called it done.

Heads all stripped down stoked to find inlet is factory CNC ported (fuck yes) exhaust is a bit shit though, I'll tidy that up do a valve grind and put back together. Found the valve seats clearly weren't sealing well obviously has been left sitting for years and got some surface rust.

Well cant leave the house so why not rebuild and port heads on this. Its always had just enough compression to make some power but knew there was more in it.

@KimjonIm not sure if a cvt is neccessary or would actually live on this size engine they are heinously expensive! I was looking for one to fit the 1 1/8" inch shaft just the driver was nz$650 and had to come from states. A snow mobile type is more affordable and can take the power but are physically Hoooouge and need (driven side is like 10 inch) modifying to run on a lower revving non 2 stroke. For that cost i can fit 2x 18hp rated clutches and hopefully load engine up and build boost once it spools up its gonna be a party for sure!

Does a bit doesn't it? Where it is puts motor mount in center of chassis with the weight of the turbo etc it all feels pretty balanced. Still got to fit a belt drive in there, going to run a 1-1 timing belt to a jackshaft and a normal centrifugal clutch off that. Prefer the idea of getting whipped with a belt then gnawed at by a chain when something inevitably breaks. My other twin seems to lengthen chain then throw them, im sure this will do it as well hopefully a belt will smooth it out a bit.

Lots of room around non moving parts now the original wheels had chewed massive chunks out of sidewall of tyres from rubbing on bolt heads etc.

Bigs and littles. Looks a little extra stretched im experimenting with engine placement to get exhaust tucked in further.

1 down 1 to go! flipped the hub so more offset and redrilled for go kart bolt pattern. Still looks pretty good if anything looks more mental than before. Will run some go kart wide rears eventually but will stick with quad rims till its been running a while.

Could use Holley float bowl sight glasses chuck 2-3 in potentially smooth them flush with the tank could look cool and be functional

Decided to throw away almost all of the frame around engine and remake it in box section instead. Its like the frame was built by a blind furniture maker on a Friday nothing's square the welds are shit but the suspension and brackets are excellent! So I'll rescue the brackets and suspension and start again. Its a very basic shape so will take bugger all to fabricate and be nice and sturdy, when this engines doing its thing in anger it'll have as much power as a small car so i better not risk it ripping in half.

Think this will end up just in front of right rear wheel. Theres a nice empty spot there that needs filling.

Spent about an hour on this this morning. Oil pressure feed, done. Oil drain decided need to borrow a 1/4 tap to finish. Started cold side pipe to carby and played with pressurized fuel tank fittings.

Thats a Chinese knock off of the gx630 i think heaps of go fast parts available out of states engine is a Predator 670. They stick them in bloody Harley's!

mainly going blow through in case the turbo sucks i can just revert to naturally aspirated easily. Also dont want to have a hot pipe loaded with air and fuel just under my nads in case of a back fire.

Will either work or it wont cost nothing to try it fortunately. This or i need a rather expensive pump to make it work or a mess of check valves and a big float chamber.

A few people have asked how im going to fuel this..... An aircraft mechanic at work drew me up a sketch on a paper towel and i think its worth a nudge, essentially my fire extinguisher fuel tank is becoming a "rising rate fuel tank" ive got a -8 fitting on my compressor housing which will pressurize the tank and feed the fuel pump at boost pressure. The fuel pump will then add 1.5 -2psi to it keeping fuel from being blown back up the jet in the carb the float bowl will also need to be pressurized as well to make it work. Going to be Braided speedflow lines everywhere but im going for an Extreme! theme on this thing. I get the speed flow lines and fittings from the bin at work no good for the sky anymore but plenty of life in them for this kind of stuff.