My Atc 90 project

[Al_Brokenwing]

I have just recently become the proud owner of a 77 ATC 90. A friend of mine gave it to me as a gift after I saw a 250r at a atv poker derby and wouldn't stop talking about how much I wanted one. A 250r it is not but free it is. Well not exactly free, the gifter and 2 other buddies delivered it and drank me out of beer. Still good deal in my books. She ain't much to look at. It was bought new by my buddies cousin and got parked in the early 80's after he crashed into something with it and never fixed it. It spent 20 some years in a shed until my buddy spotted it this fall and brought it to me. The handle bars were bent, the tank dented, headlight busted, taillight busted, seat trashed and the tires were rotten. Other than that it is in great shape. LOL. To my surprise it started and ran by just adding fuel and 4 pulls of the rope.

[old-yellow]

Looks like it just needs a little work are the front forks bent to?

[old-yellow]

Does it run good? anyways nice score!

[Al_Brokenwing]

The forks are straight, bonus! I bought handlebars and a carb boot on ebay for $35 delivered. I also picked up 2 rear tires for $45 each at a local parts store last week. It starts and idles smooth. I have riden it around my yard a bit but it won't rev up all the way under load. Maybe it needs a carb dip even though it looked perfectly clean.

[Vealmonkey]

Try running some carb or fuel injector cleaner in the fuel tank. Just dump in a whole bottle in a whole tank of gas. It should help some. Parts aren't too bad to get for those. A tank can be expensive unless you are not picky you could use a plastic reproduction fuel tank. They are around $100 bucks and it solves any rust problems you might have which can be bad with the old atc90 tanks. Make sure you run an inline fuel filter just in case of any rust. You can pick up some hop up parts like cams, exhausts better air filters. A good and cheap hop up is to find an atc110 carb and intake and run that. It will help pep it up some. Make sure front and rear wheel and axle bearing are in good shape. Make sure your chain isn't all rusted up. If it is, wd40 or some other rust product real well and keep it well lubed will help alot. The clutch properly adjusted and the timing and valve setting will go along way to help the trike run nice also. You may want to buy a set of points and condenser and keep them handy for future use as well as a couple spark plugs. The trike probably could use a nice oil change and you may want to clean the screen inside the right side engine cover. A good honda shop manual is handy. You should be able to download one off line somewhere pretty cheap and maybe even free. Seatcovers are pretty inexpensive and can look nice recovered depending on what kind of shape the foam is in. The rear femders are a jard abs plastic and they are painted and the plastic underneath is white. If you want to hot rod the trike you can find big bore pistons and as long as you have a nice machine shop around, it's not real hard to put in a larger piston. You should have alot of fun with your 90. I have a couple hot rodded and they can be a real blast. Keep an eye on your frame right behind where the handlebars. That seems to be the area where those frames break the most and just remember that the frame is 30 years old and stamped steel so it might be a little metal fatigued. Be careful if you jump the trike alot. Make sure to get a nice helmet too. Have fun and keep of posted on what you do to your trike. More pictures are always welcome. People enjoy the old 90s just as much as they do the 250rs. Welcome to the site by the way.

[Al_Brokenwing]

Thanks for the tips Vealmonkey. The fuel tank was really clean and I hope a local body shop can fix the dent. Where would a guy find good set of points and a condensor (cheap)? This wheeler is going to be for touring around my farm yard and using as a pitbike. The carb and intake sound like a easy upgrade. This bike brings a smile to my face every time I ride it even though I have 750cc 4 wheeler that totally blows this thing away for performance.

[Vealmonkey]

You can still get the originals from honda if you have to have original or just about any dirt bike dealer should be able to get you aftermarket points and condenser or try ebay. And I hope your 750 quad is faster than an atc90! If not, I'd get rid of that quad. LOL The 90 is not a performance trike by a longshot, but you can do alot to them. They were the original atc racing trikes. Big bore kits, stroker kits, different frames, Bigger intake and carbs, crazy racing pipes, fiberglass fenders and tanks, radical cams and numerous other mods including running on alcohol made the old atc90s fly. People modded cb750 pistons to fit the atc90s. Cb750 intake valves too. They were hotrodded to the point that they were little hand grenades. Imagine something that would do around 55mph or faster and had no rear suspension!!! After 1981 or so, you could even get suspension frames for them so they had full suspension front and rear. It just depended upon how crazy you could afford to get. The early racers had really big nads to race these things around and it was an amazing sight if you ever saw them run. A real handful to ride at speed. But incredibly fun.

[Al_Brokenwing]

Here is a picture of my 2 year old after getting his first 3 wheeler ride. As you can see I have it running and the handlebars on. Next I'm looking for a seat and the lights.

[chris200x]

That's the first time I've seen an atc90 with ape hangers! neat little ride you got there!!!

[Al_Brokenwing]

Those bars do look a bit chopper don't they. I think I'll try and find some cheap MX style ones. I don't
like how they turn back at the grips. I want something that comes a out little staighter. But, they work for now.
LOL