When i got her she had a stock topend on and ran decent but dident rev out at all and had bad vibrations, because the bottomend were 360 modified(bored out cases for the bigger sleeve, 4 big balance holes in the crank for the 83,5mm piston and retarded ignition). This 82 is a complete former 360 racer exept the topend is missing. Get a newer one and see if that stops your death rev.Is that a CR250r mugen motor? It is the ME360 kit right? You probably still have some cracks on your intake boot. You will have better suspension than a 200xĪlso, make friends with Manbearpig as he is probably the most literate of the first gens from my experience. Take your forks off and let onformula1 do his magic on the front and rear. Leave the air box (sand and mud is your enemy). My additions as I have owned and rebuilt 2 first gens. This seal on the damper rod wears and is available from the site below. This being said, since you already have the 200x forks you don't have anything to loose by trying them other than the narrow tire which has its advantages and disadvantages. If the fork springs are too soft you can buy stiffer ones.
1981 HONDA ATC 250R PARTS INSTALL
You can actually cheat a little and install around 5/16” of AN style flat washers in the bottom of the damper rod cones to increase the suspension by an additional 5/16”. The type of valving on both is the same, therefore, so you will basically only be gaining 1” of travel by installing the 200x forks. The 81 250r has 6.7” of front suspension and the 200x has 7.7”. If the DG silencer fits both the stock pipe and the DG pipe, the PK will also. If the 200x front end offers better performance and ride quality, I'm going that route. I know the fat front tire gives this machine it's "character", but I'm not going for a restoration here.
I have a 200x front end already laying around so I wouldn't have to go find one. I would assume that will work with a dg pipe or the bassani listed?Īs for the front tire, I do like the looks of a big kenda front max on these r's. It has a pk racing silencer on currently. Sorry my pictures don't include a picture of the silencer. If it isn’t, you can still buy the DG pipe. If it is, then you saved yourself $200.00. It will give you a noticeable increase in power which might be enough for you. Another option is to buy the DG silencer, I think it fits the stock pipe and the DG pipe so you can try it on your stock pipe. You could buy that pipe and buy an aluminum silencer and adapt it, this would be very cool. The Bassani below is a real vintage cone pipe, and my guess is that the guy would take $200.00, however, it has a heavy steel silencer but who cares. If you buy a $200.00 DG pipe, you still need to buy a $110.00 DG silencer. you will need to use an 81/82 caliper mount for any caliper you choose. It doesnt really matter what it is, it will flow better than stock and will weigh half as much. be patient and watch ebay for an old unidentified pipe and silencer setup to pop up. F元50 intake boots are hens teeth.Įxhaust isnt that tough to find. be wary of cracked, repaired, or super stiff boots. If you dont want to try to hunt one of those down, you can find an 81-84 250R boot and heat it up and stretch it to fit the larger carb. Makes swapping boots for bigger carbs easy. I have switched over to vintage aftermarket intakes that have interchangeable Mikuni snowmobile boots for any size carb. Intake boots can be a little tough to find.
1981 HONDA ATC 250R PARTS UPGRADE
decent upgrade is a 30MM Keihin round slide from 83/84R (30MM) and a better upgrade are the 34 Keihin PE (round slide) or PJ (oval or "flat" slide) from 85 & 86 250R respectively.
its what gives the gen 1 250R (81&82) its character.Īs far as carb setup, somewhere around 34MM is where you want to be unless you've got some wicked porting and are drag racing or running Ashtabula. If any of this sounds wrong or there are better options, please share. Won't be able to afford a vintage good one I'm sure.
1981 HONDA ATC 250R PARTS FREE
Uni filter with outerwear, ditch stock airbox, build a free flowing replacement unit. I have old lawn boy 2 strokes, chainsaws, and trimmers so I'm not completely 2 stroke illiterate, however 250r specific advice is what I'm after.įor my build here is what I'm thinking for bolt on go fast parts:Ĩ5 250r keihin PE 34mm carb or something similar. This will be my first 2 stroke trike so I welcome any and all advice. Yes I know it won't touch a liquid 250r, I don't have the money for one of those. Just a fun ridder to take on some dunes, trail riding, and snow. It doesn't need to handle massive jumps or be the ultimate racer. I want to build a solid ridder with some extra "go" to it over stock. Intake boot is shot, choke on carb is busted and held on with wire. Good compression, tranny went through all the gears. 3-4 years ago had top end rebuild, <10 hours run time, then sat in the shed.
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