'83 Honda ATC 300R

[TtownJoeShow]

Hey, i just bought a Big bore kit for my trike!! But it sounds like it could use rings and maybe a piston. The guy i bought it off of, said that theres a jetski piston that fits and mayb a skidoo...does anyone know much about this? its not in my possesion yet but will b in about a month!

Any help would b awsome!
Thanks!

[BigGreenMachine]

Kawasaki JS550 piston is the one that fits if I remember right. Blazerone or someone posted the part number for it a while back. Search it.

[TtownJoeShow]

hmm have done some searches but not much info :(

[84Rips]

ok well your options are slim yes there may be an option to run a snowmo or ski piston but im not familiar with it. The most common option (what I did) Is deck your cylinder 4mm and trim your sleeve and run a 330 bigbore piston for a trx250r. I've also heard of running a fl350 piston but I wan't to say by the time your runnning pistons that big your sleeves about out of life. I've heard wossner will still make pistons for the hondaline kit but youd have to call. It will be pricey but be worth it. An unmolested 300r kit will fetch a bigger penny then mine will and might run better as well. The way I see it you pretty much have a 4mm stroker compared to the ones modded for a trx piston.. Hope that helps a bit :cool:

[scooterroo]

wow, this thread is from 2006 and just getting an answer tonight? holy cow, clean off them cobwebs, breakout with the swiffer!! hahahaha

[kasey200x]

lol how do you guys catch that stuff? I never think to look at the dates of the threads on top of the page. And a question about this thread, wouldn't a new piston and rings come in the new big bore kit he got? lol

[sbjones73]

most of the hondaline 300 jugs and heads are just that, jugs and heads now. it is very hard to find a complete kit with piston and rings.

wossner would be a good way or the 330 trx piston with cut down jug works great also.

good luck !!!!!!!!

[84 r]

i lucked out and found a nos 300 piston

[crev]

I found some 76mm though 78mm at racerstoystore.com

[hawaiirider]

i lucked out and found a nos 300 piston

your lucky!! i sold my 300r just because i knew itd be a hassle when it needed rings, that and the 85 250r was still faster....

[Madman Racing]

Everyone swears by the 3rd gens being faster and better handlers. I have both second and a 3rd gen and the ergonomics on the 3rd gen are crap compared to the second gen. With a little modification my 84 will hang with the 3rd gens all day long on a mx track. I have 2 300r motors as well and never had a hassle getting piston /rings. Long live the air cooled

[DohcBikes]

Everyone swears by the 3rd gens being faster and better handlers. I have both second and a 3rd gen and the ergonomics on the 3rd gen are crap compared to the second gen. With a little modification my 84 will hang with the 3rd gens all day long on a mx track. Sooooooo...... tell us again how you have to modify the 2nd gen to keep up with the 3rd gen. I really like that story.

[Madman Racing]

I figured this would happen. No fantasy land here on the east coast. Never said I'd BEAT a 3rd gen, I can Hang with a stock 3rd gen all day long where high gear is rarely used.As for what I've done there Duhick bikes. I have only a pipe ,86 carb,spacer,and new reeds.and a 38 rear sprocket on 18's. Couldn't tell you anything about what size bore because i haven't needed to tear it down yet since I bought this one (if it ain't broke, don't fix it)Don't get me wrong I love my 85 r but it doesn't fit taller riders as well as my 84 .Just my opinion since I've only been riding and building air cooled R's since 87.

[nicker71]

I figured this would happen. No fantasy land here on the east coast. Never said I'd BEAT a 3rd gen, I can Hang with a stock 3rd gen all day long where high gear is rarely used.As for what I've done there Duhick bikes. I have only a pipe ,86 carb,spacer,and new reeds.and a 38 rear sprocket on 18's. Couldn't tell you anything about what size bore because i haven't needed to tear it down yet since I bought this one (if it ain't broke, don't fix it)Don't get me wrong I love my 85 r but it doesn't fit taller riders as well as my 84 .Just my opinion since I've only been riding and building air cooled R's since 87.


Yep, Madman racing is right. A Aircooled with few simple mods are just as quick as the LC, just don't have anywhere near the top speed. I out accelerate the many LC R's off the line at the track all the time. These aircooled R's can really move quite well.

[DohcBikes]

Yep, Madman racing is right. A Aircooled with few simple mods are just as quick as the LC, just don't have anywhere near the top speed. I out accelerate the many LC R's off the line at the track all the time. These aircooled R's can really move quite well.Sooooooo...... tell us again how you have to modify the 2nd gen to keep up with the 3rd gen. I really like that story.

[nicker71]

Sooooooo...... tell us again how you have to modify the 2nd gen to keep up with the 3rd gen. I really like that story.

Really simple, just put a 34mm carb or larger, v force reeds, and full exhaust system. Run a open airbox lid and have it jetted correctly and boom!! Now your able to run with the LC
Add some good port work, cut head and flywheel and even better.
Running stock gearing

[DohcBikes]

Ahhhh boy. Tough crowd here today huh?

The world speed record for a machine with a 50cc engine is 145 miles per hour.

A suzuki hayabusa has nearly the same drag coefficient as a HUMVEE.



34mm carb or larger, v force reeds, and full exhaust system. Run a(n) open airbox lid and have it jetted correctly and boom!! Now you(')r(e) finally able to run with the stock LC

Fixed it.

[nicker71]

Good for you, that you fixed my typo's.
Get a life, douche bag!



Ahhhh boy. Tough crowd here today huh?

The world speed record for a machine with a 50cc engine is 145 miles per hour.

A suzuki hayabusa has nearly the same drag coefficient as a HUMVEE.



Fixed it.

[heusser85]

Hands down 85/86 250r is BETTER then 83/84 250r. I still like both

[atc300r]

Hartley Dunlap (1upfront) on the trike sites smokes them all on his 83 atc 300r.banshees,450s ,stock or modded liquid rs.

[El Camexican]

Someone pleeeeease say something about a Tecate VS 250R so we can enjoy the bantering's of Barnett on this 10 year old thread!!!:Bounce

[El Camexican]

♪Barn, Barn he's our man!♪
♪If he cant make this about a Tecate no one can! ♪

[DohcBikes]

Good for you, that you fixed my typo's.
Get a life, douche bag!........................./´¯/)
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[DohcBikes]

The world speed record for a machine with a 50cc engine is 145 miles per hour.

A suzuki hayabusa has nearly the same drag coefficient as a HUMVEE.These are facts that should have illustrated a point. I seriously can't even talk to some of you people.

[Madman Racing]

It's obvious "Glamy" and "Duh-Hick" are frigging Einstein's in the trike world even though they probably were still capping in their diapers or not even born when their precious 3rd gen was new. That's what I hate about 3 wheeler world. Everybody is a technical genius. I was just simply stating my experiences I've had with my 250r s that I've had over the past 30+ years. Little Einstein's go take your precious 3rd gens and go play in your sandbox. ...

[Madman Racing]

Feel free to bash away, correct my posts,and make cute middle fingers,you definitely are pros at that. I'll keep on keeping it real for the good fellow trike brothers and sisters who enjoy it for what it's really all about. ..FUN!

[El Camexican]

It's true, Glamy's as old as dirt... wheels magazine:lol:

DOHC just likes to argue and Barnett just likes Tecates and I just like to read this sh*t and laugh like hell.

In the end all trikes rock, even the bad ones:Bounce

[Madman Racing]

Glamy Glamy he's our man! Go Glamy!!! He's so cool. No lying here. Been riding as long as you . You're welcome to come see how much of a Little boy i am and,lying on my air cooled.

[Madman Racing]

P.s.I love the little pointless poems. Soo cute.

[DohcBikes]

There's a big difference between an argument and a lesson. This one is obviously too complicated for some to comprehend.

[Madman Racing]

Im Not from that generation.I was warned about 3ww being full of "know it all Dickheads"Guess i shoud of listened."Glamy " such a cute name for a tough veteran trike rider... You keep heckling everyone with your buddy dohc like the two old guys in the balcony on the Muppet show,hiding behind your cute Lil computer names . I'll be out this season on the track ,keeping it real for all the real trike riders who love air cooled...

[DohcBikes]

hiding behind your cute Lil computer names Lots of people here have my address and phone number already. For those that don't:

Damon Gifford
SouthCycle
5030 S. 16th
Ste. #4
Lincoln Ne 68512
402-405-4096

Stop by ANY TIME.

[El Camexican]

I'll be out this season on the track ,keeping it real for all the real trike riders who love air cooled...

"Keeping it real" I love that phrase ever since I saw Chris use it.

https://www.youtube.com/watch?v=LVdvd8EHMDo

[El Camexican]

The world speed record for a machine with a 50cc engine is 145 miles per hour.A suzuki hayabusa has nearly the same drag coefficient as a HUMVEE.


These are facts that should have illustrated a point. I seriously can't even talk to some of you people.



There's a big difference between an argument and a lesson. This one is obviously too complicated for some to comprehend.

Ok, slow down and give us a chance. I've been trying to figure this out all weekend, but I'm still stumped.:wondering

I can't figure out if the answer to lowering the drag coefficient is to put the Busa engine in the Hummer, or the Hummer engine in the Busa. The only thing I am sure of is that I need to sleeve down my Tri-Z big time if I want it to go 145mph :D

[nicker71]

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That 's really cute, but you're still a douche bag

[shovelryder]

If someone cant take the heat, they should get out of the kitchen.....And put this 5 year old thread to rest.

[conbon]

Wow, this was an interesting thread to read...

Came across it after a search on Google, "oh boy, 3 whole pages of people discussing alternative piston options for 300r top ends, awesome!" Turns out it was half a page of useful information then two and a half pages of "veterans" and "teachers", also known as "smart ass 3rd gen riders" blatantly bashing air cooled. Wow, glad to see this forum promotes a healthy image of all trikes and isn't selective, oh wait...

Thank you madman racing and nicker71 for the useful information you have provided!

-Connor