110 racer

[TrikerR]

im in the process of building a little racer to compete in a local championship for minibikes...up to 150cc, so ive decided to use whats at hand, it should be fun.
anyway my 110 needs a new top end put in i was just wondering whats the largest the 110 jug can be bored out to. i know you in USA would think it strange to do this to a 110 but my reasons are

i want something custom
and that larger trikes are few and far between here in aus, when they do come up they are expensive

and what modifications would i have to do for this setup to work.i know bigger jets, but what size. anyway im going to give it a port and polish and put a new exhuast on it. ive already got some front suspension and am just needing some tripple trees,would anyone know how much they would cost to have made.and also what twist throttle could i use, and whats a good set of handlebars to go on here

anyway cheers guys

[bigred110]

Good luck with your project.

If you can try to find a 125 and you'll have 15 more cc's then the 110. If I remeber correctly the biggest piston I could find is 2mm over and that make it about 115cc I believe. Unless you find a big bore kit.
Another option would be a 90cc, because I think they still make a big bore kit from them, not sure though.

Cobra make a exhaust from them.

[thefox]

The biggest top end that will bolt on would be from a honda 125m. There are a few aftermarket twist throttels out there, ones for a quad will work. As for jetting that is done last. There isn't a set # for the main jet because you would have changed so many things (top end, air filter, exhaust). The only way would be to run a few plug checks and then swap out a new jet and test again, or get a dial a jet (probably the easiest way).

[OldSchoolin86]

There is a 125m cylinder on ebay.
http://cgi.ebay.com/ebaymotors/ws/eB...category=43977

[Curtis-Tecate3]

I am 99% sure that the 125M cylinder will not work. I remember GreenHuman and maybe even Howdy responding to this same type of question by a different poster. I think that 118cc is as big as you can go with the stock sleeve(Although I dont see any 90 or 110 pistons listed anymore in the Wiseco catalog). Powroll and other 4 stroke specialists can stroke your crankshaft to go up to your 150cc limit if that is your goal. We aren't talking cheap here though.

Curtis.

[hondatrikesrule22]

I am in the process of building a 110 racer also. It isn't weird to mod a 110. Anyway, with the right combination of boring and stroking, you can reach 180cc if you wanted to. For increasing ccs, stroking is the way to go. You will notice a difference. Greenhuman said that a Honda cb 200 twin piston will work in the 110. It is only .5mm larger than the 110 piston, but it raises the compression greatly, thus more power.

If you want something totally radical, Get a xr 70 frame, and plastics, and buy my racing swingarm that was made for 110s with suspension. Then get some tripple clamps made.


As for the motor, there is a ton of things you can do to it. Here is a list...

Exhaust
Remove airbox and use a clamp on filter
Stoking the crank
CB 200 twin piston
Vented valve caps
Bigger carb.
Re-jet
Lightened valves
DID cam chain
port and polish
a 69' SL 90 cam

And the list goes on and on. These mods will give a 185s a run for its money.

For handlebars, I am running a set of 1980 110 handlebars. What year is your 110? Because on the earlier ones, the handlebar clamps were close together, and not just any set of bars will work. I am going to race circle track anyway,so I don't need a set of moto-x bars. It also helps keep the "sleeper" look.

[TrikerR]

yea well mines a 1981 model. whats the cb200 twin piston, and im in oz so who would stroke the crank for me

[MTS]

hey hondatrikesrule..would the cb piston bore into a atc 90 sleve..and if not dose anyone know if a 110 cylender would fit on a 90 crank and bottem case??

[TrikerR]

and what is stroking. would these wheel spacers work on the 110 http://cgi.ebay.com/ebaymotors/ws/eB...category=43983

[mywifeknowseverything]

A friend of mine owns a Bike shop....He has about 6 or 7 ATC 70's with the 110 motor in them....However, they are now I think 145's....Not sure what all he did to them but they just flat Scream....

[TrikerR]

ohhhh why didnt australians get into triking. it not fair. is anybody sure that the 125 head wont fit on the 110. if its not a direct fit what modifacations would i have to do to make it fit.

[Howdy]

I am 99% sure that the 125M cylinder will not work. I remember GreenHuman and maybe even Howdy responding to this same type of question by a different poster. I think that 118cc is as big as you can go with the stock sleeve(Although I dont see any 90 or 110 pistons listed anymore in the Wiseco catalog). Powroll and other 4 stroke specialists can stroke your crankshaft to go up to your 150cc limit if that is your goal. We aren't talking cheap here though.

Curtis.

Curtis is correct, a few of us have tested this before and know the 125m top end will not bolt up to a 110 or 90 bottom end.

Howdy

[TrikerR]

would a automotive engineer be able to stroke my crank. and would i be able to bore the 110 out to 125

[TrikerR]

does anyone know the specs on a set of 1981 250r tripple trees. ie overall width, steering stem size, fork tube holes size.

[hondatrikesrule22]

Hond_atc-The cb200 twin is a motorcycle I think. Its 2 cylinders, so that means that each piston is 100cc. It is slightly bigger than the stock 110 piston, but raises your compression. It will give you more power than boring it out.

MyTrikeSucks-First off, love your name! LOL I am not sure about the the piston fitting in the 90. You may have to get a bigger sleeve. Ask "greenhuman" . He built up all kinds of 110s. He had a ATC 310. lol He should be able to tell you anything you want to know.

Hond_atc-www.powroll.com Go to the tech section,and it will be a page titled "What the heck is a stroker".Give them a call. They would be able to make your crank a stroker. It would give you more power than just boring it out.