Mr.modified's GTR Four Zero

Ah right. That's a 16hp opposed right? Pretty big lump of an engine on that tiny thing!

Actually I can't be sure what the engine now puts out. It's a 42CI engine with a mix of parts. Somewhere between 18-19.5hp should be fairly close to an honest figure. The 42CI engine I had was marked 18hp, but with the carb setup, exhaust, and parts from a couple engines, who knows.

Gas tank in it's bracket. Temporary bungee cords will get replaced by something else. Fenders will go on the rods sticking out.





Heat shielding around fuel hose where it is close to the exhaust. Bracket still needs painting.

Maybe plumb in an elbow so the fuel line is further from the exhaust?

The angle of the picture makes it look like its right up against the exhaust? Or is there some space between them?
Given a space, a simple heat shield wouldnt hurt?

Fuel line has about 3/4" clearance at least. But there may be more later if I make a couple more permanent brackets to hold it. At the moment it's just a couple of wire ties.

Zip ties arent permanent?

Some are and some aren't. Actually zip ties are seen on many professionally built race cars if you notice in pictures. Wires and things are hooked down with them. Because of course you wouldn't build a purpose built race car and waste time making fancy brackets just to hold a few wires here and there. So the zip ties on this build in some places are actually part of the look I was going for. But no, not the haphazard sideways one on the fuel line/seat brace rod.... Things have to be neat looking.

Bracket for fenders almost done. Tabs over the wheels are to hold the mud flaps.




Small tail lights will end up here, one on each side of the gas tank.

I really like that exhaust. I may need to do something similar on the CraftsmanKart

Thanks, I like the look of it. Keeps the noise cut down pretty good, I have a hole drilled through the center baffle in each muffler.

Does it have a nice deep sound?

I guess it doesn't sound too bad. Here's the test run video. I hope in spring I can get some more video.

wow thats fast

It's geared for 40mph at 4000rpm, but I have not yet checked it. It's a bit unstable at speed due to the steering not being figured out exactly right. All and all it's kinda neat though for what it is.

One plastic mud flap installed, still need to cut out a second one. Made from windshield washer fluid bottle.


Washers welded on which hold the mini tail lights.




Headlights bolted on. Once the tail lights are in, I can wire up the lights.

Tire rack painting rack in use.


Sprayed it machinery grey just like the frame and rims.


Bolted on.


Mud flaps bolted on. Black things across the top are thick plastic and keep the bolts from pulling through the mud flap. Tail lights installed but not yet wired. Bought a white kitchen trash can to cut up for fenders. Those are next.

Kitchen garbage can that will become the rear fenders. Already white plastic so it doesn't need painting.

mr.modified wrote:

Washers welded on which hold the mini tail lights.

Whats that taillight belong to in th back there?

It's a 64-65 Ford thunderbird hard top, getting it running plus a few other things. Customers car.

Tail lights wired together, jumper battery rigged up to tail lights. Rear fenders pretty much done. They aren't super straight but they're on there. Got a little snow here and got a chance to drift around the parking lot but I didn't have my video equipment on hand. If I get a chance this winter I will take it to a parking lot after a snow at night or something like that to get some footage. Likes to understeer a bit, so the best thing to do is push in the clutch and lock up the rear wheels with the brake. Steer into the turn and once the back end is slid out enough, dump the clutch back out and gas it. It has a good amount of weight on the rear wheels so it gets decent traction in the snow.

It's looking pretty sweet mr.mod! I love the contrast of the different colors, it does make it look like a rally car. How are you going to set up a switch for the brake lights? I have some ideas for one myself but would like to see what you come up with.

Thanks! Just going to run tail lights though, no brake lights this time. Would be kind of neat to have brake lights but I'm to lazy to rig them up. Plus I'd need separate lights for that

Lookin' better all the time! I really like the checker-plate on the air cleaners, it's a real nice touch. I might have to steal that idea for the air cleaner I wanna do on the MTD, haha.

Thanks, best part of aluminum is it's easy to work with. Cuts and drills easy. Nice if you can find someone with an old aluminum diamond plate pickup box that they want to get rid of.

mr.modified wrote:

Nice if you can find someone with an old aluminum diamond plate pickup box that they want to get rid of.

If I got a hold of one of those I'd probably make a whole tractor body out of diamond plate hahahaha!

Got everything put together and lights wired. Switches in the dash. Took it outside for a test run and to check how well the lights work hooked direct off the coil. Seems the tail lights fry at high rpm, must be too much voltage without a regulator? Who knows, but doesn't seem to hurt the head lights. So that's the 1st thing to fix.

As for the actual test ride... I had the front wheels toed in pretty heavy before, I thought this would help with the quick steering and jumpy handling. Turns out it makes it worse. I set toe to about zero (front wheels straight ahead) and it seems to handle a lot better that way. Steering seems a lot less quick. So that's the good news. BAD NEWS is that something chewed itself up inside the peerless 700 glass transmission... I think probably the shift keys. Had some belt drag issues where it would keep spinning with the clutch in, so a couple times I tried to knock it into 1st gear quick. Pretty sure it didn't like that. So the trans has to come back out so I can take it apart. Other than that, I think it's mostly done. Maybe add some belt guides, probably bolts that stick up through the skid plate should do it. I hope nothing serious got ruined too bad, I do have a spare 700, but hate to burn one up so fast. Hardly any use on this one at all.