linuxman51
volvo spaz
I can't think of a creative intro here, so I'll just jump in to the facts and ideas.
This project started with the procurement of a honda clone 13hp engine for cheap, and need to do something fun with it.. while searching for a suitable (read: any) frame, I stumbled across someone selling a used twister 150 with a locked up engine. After some discussion (all polite) I came home with this hog:
(I'm not in the picture, these are just accomplices in crime)
we got it running, but it smoked. A lot.
It also didn't have a useable airfilter, so I set about fabricating something, and ended up with this monstrosity. I'm a bit ashamed of what it took to get it on there, but all of that is just temporary, so, macht nichts.
the ever increasing cloud of smoke it trailed had me concerned about the plans going forward, namely:
fuel injection followed by turbocharging, so I figured a quick (lol) rebuild would smooth things out. to cut down on the initial development costs, I've kept it stock for now (in case something doesn't work correctly with the timing control and I melt it down hah). Depending on how it turns out, it will get stroked, punched out, big valves, and a hot cam.
Anyway, even in its dilapidated state, it can still do work
but I digress.. Parts were ordered, assumptions were made, plans were set in motion.
This stuff got here friday
NCY variator kit (with all the gee whiz other stuff, better clutch, etc), "rebuild kit" consisting of cylinder, piston, rings, clips, wristpin, gaskets, assembled head, oil filters (they're so cute and small). Sufficient, I thought, to solve the smoke problems that I attributed to a trashed piston.
Turns out I was only partially correct..
off came the engine
disasembly began
and when I got the jug off finally, I thought I was home free. Piston was indeed completely worn out
and kinda... difficult to along the pin-axis.
As it turns out, the wrist pin seized to the rod, and no amount of profanity, begging, heat, penetrating oil, 12 ton press, c-clamp, etc would get it to even budge. Me and my faithful assistant (the guy in the top pic with the beer) shattered the piston trying. I may give it another go tonight after work now that it's just the wrist pin and I can put something under the little end of the rod, but even then I'm a little concerned about the overall condition of things at this point.
So I went ahead and ordered a new stock crank (fighting the urge to stroke it.. man that was tough. if the parts were a little cheaper it would have been a lost cause
), crankcase seals, flywheel puller tool and something else related to the process. Hopefully the goods will be here weds so I can put it back together weds night.
I've not *yet* determined how I'll go about triggering the megasquirt, but it's still a work in progress. main concern right now really is the electrical system, since i'm not entirely sure it's up to the task. As easy as the thing is to take apart, I suspect I'll be doing the engine in and out shuffle several times whilst getting this stuff right.
Oh, and cursory turbo pics:
it's so tiny compared to the stuff I use on my cars. haven't completely figured out where I'm going to put it yet.
As for the engine that started this whole thing.. we found an old carter frame with a Tav2 converter setup on it (single seater) hooked up to a 5hp briggs, the power to weight ratio should be outrageous, we'll need to put a different seat on there (more along the lines of a shifter-kart/racing seat), but first I've gotta figure out what's missing from the converter setup and get it re-built correctly.
This project started with the procurement of a honda clone 13hp engine for cheap, and need to do something fun with it.. while searching for a suitable (read: any) frame, I stumbled across someone selling a used twister 150 with a locked up engine. After some discussion (all polite) I came home with this hog:
(I'm not in the picture, these are just accomplices in crime)
we got it running, but it smoked. A lot.
It also didn't have a useable airfilter, so I set about fabricating something, and ended up with this monstrosity. I'm a bit ashamed of what it took to get it on there, but all of that is just temporary, so, macht nichts.
the ever increasing cloud of smoke it trailed had me concerned about the plans going forward, namely:
fuel injection followed by turbocharging, so I figured a quick (lol) rebuild would smooth things out. to cut down on the initial development costs, I've kept it stock for now (in case something doesn't work correctly with the timing control and I melt it down hah). Depending on how it turns out, it will get stroked, punched out, big valves, and a hot cam.
Anyway, even in its dilapidated state, it can still do work
but I digress.. Parts were ordered, assumptions were made, plans were set in motion.
This stuff got here friday
NCY variator kit (with all the gee whiz other stuff, better clutch, etc), "rebuild kit" consisting of cylinder, piston, rings, clips, wristpin, gaskets, assembled head, oil filters (they're so cute and small). Sufficient, I thought, to solve the smoke problems that I attributed to a trashed piston.
Turns out I was only partially correct..
off came the engine
disasembly began
and when I got the jug off finally, I thought I was home free. Piston was indeed completely worn out
and kinda... difficult to along the pin-axis.
As it turns out, the wrist pin seized to the rod, and no amount of profanity, begging, heat, penetrating oil, 12 ton press, c-clamp, etc would get it to even budge. Me and my faithful assistant (the guy in the top pic with the beer) shattered the piston trying. I may give it another go tonight after work now that it's just the wrist pin and I can put something under the little end of the rod, but even then I'm a little concerned about the overall condition of things at this point.
So I went ahead and ordered a new stock crank (fighting the urge to stroke it.. man that was tough. if the parts were a little cheaper it would have been a lost cause
), crankcase seals, flywheel puller tool and something else related to the process. Hopefully the goods will be here weds so I can put it back together weds night.I've not *yet* determined how I'll go about triggering the megasquirt, but it's still a work in progress. main concern right now really is the electrical system, since i'm not entirely sure it's up to the task. As easy as the thing is to take apart, I suspect I'll be doing the engine in and out shuffle several times whilst getting this stuff right.
Oh, and cursory turbo pics:
it's so tiny compared to the stuff I use on my cars. haven't completely figured out where I'm going to put it yet.
As for the engine that started this whole thing.. we found an old carter frame with a Tav2 converter setup on it (single seater) hooked up to a 5hp briggs, the power to weight ratio should be outrageous, we'll need to put a different seat on there (more along the lines of a shifter-kart/racing seat), but first I've gotta figure out what's missing from the converter setup and get it re-built correctly.
