Max, Comparing front brake pressure to rear brake pressure is not an apples/apples comparison. Whether front brake does 70% of the work or not, you activate the front brake with your hand, and the rear with your foot. Don't know about you, but I can play piano and guitar with my hands but not with m...

You asked if the "model a" carb was not made for two strokes. Answer, no, that's not true. While the model A carb is configured differently than all other Hodakas, there is nothing about any Mikuni that makes it inherently a four stroke or a two stroke carburetor. There are, in fact, two s...

I'm with Rich on that question. I started with an Ace 100B in 1971 and about the first modification was to change from piston port to reeds. Even if you don't get more power (which generally you will) reeds make the bike more rideable. Efficiency increases, response to throttle increases, ability to...

Bill, Here is where I will disagree completely. Torsional springiness is the verbal equivalent of spongy brakes. This is a safety issue as well as a functionality issue. Brakes should have a nearly linear response to pressure, otherwise, you will never know what your brakes will do until you wait fo...

Oil the die and rod.

It is not clear to me where the 80 Squirt injects its oil to. I see from the diagrams that there is a check valve and banjo bolt, and that the oil outlet line seems pretty short, but I can't see where the banjo bolt bolts to. Intake manifold?? If injector oil is injected into the intake stream behin...

The advantage would be slight. It is a cost/benefit question. I don't think it will cure whatever is going on. But I have never had a time when changing plug styles within the same family and heat range caused a need to retune.

It is probably my inability to relate well to bikes meant for hard surfaces . . . but will a 1/4" brake pivot rod be a bit of a "flexi-flyer" torsion rod actuating system? Ed Yes and no. Quarter inch is pretty light for a torsional load. On the other hand, the reach between levers is...

Using either a standard or iridium plug isn't a tuning choice. They are both spark plugs, and basically fungible. There are benefits to using the rare metal plug that have more to do with spark stability at high rpm due to lower voltage demands. Since you say yours runs on the high side for an iron ...

Don't know about your water bureaucracy, but ours won't pay for anything on our side of the meter unless we can prove one of their guys damaged something on our side. Which of course they never do and we couldn't prove it anyway. Good luck. Abandoning the old line is most expedient.

Matt, The more you describe the symptoms, the more I tend to doubt it is a fuel issue, simply because of the repeatability, but I wouldn't take any ideas off the table yet. It could, I suppose, be a combination of low fuel level in the bowl and frothing from high rpm vibration. But the way it just h...

Jack the 97 and 98 CDI limits revs to 12,000 RPM exactly Rich Good to know. Not that many of us spend any time at 12K, but still. That's probably at or above the engineering limit of the piston and crank assembly in stock trim anyway. Would you have any input on the rpm limitations, if any, of the ...

Point gap sounds correct, or in the range anyway. You can always change the timing to match point gap, so the gap isn't critical as long as it is wide enough to allow coil saturation, which it should be. Actually, 0.38mm is on the upper end of the spec range, so dwell time should be okay. The Wombat...

Oiled filters should never be goopy. If it isn't dirty enough yet to require washing, just wrap in paper towels and squeeze. Thoroughly. Don't know if racing points are really any different from standard, but take a look. Give each a squeeze and see if there is a difference. I would expect points fl...

I don't use spring clamps anymore on the dirt bike. I safety wire the fuel line. It's easy, it doesn't fail, it won't cut the tube unless you are using baling wire, and while having safety wire pliers is nice, it isn't required. I used needle nose pliers for years. Harbor Freight has safety wire che...

Clarence is making a valid point here. Unless you have been doing wide open throttle jetting runs, assuming the main jet is causing plug loading is only an assumption, and would not necessarily be right. It is quite possible to foul a plug without ever getting over half throttle. Search the Internet...

As for the carburetor, seeing as you are racing moto, I would opt for at least the 28mm, and would consider the 32mm if it was modified with Venturi vanes. If your bike is quick as it is, a larger carb may well be just what you need to go with the pipe, the porting, and the gearing.

Something in what you just said Matt has me wondering. You said you can back off the throttle and hit it again, and it falls off predictably at the same spot, and that this is repeatable. I would think that fuel starvation would be a bit unpredictable when riding in real time because of variables no...

I understand the thought process behind drilling out fuel fittings, but in the end, fuel will flow no faster than the most restrictive point. That would commonly be the float valve. Mikuni does make larger float valves I think, but whether they interchange with the smaller carbs I have no idea. Modi...

I thought about the pipe also, but would expect a clogged pipe to present itself more slowly rather than suddenly. Power with a clogged pipe tends to fade gradually as back pressure rises. But here the OP said the power drop is so sudden he feels like he is going to scoot up on the tank. That's pret...

Without riding it myself and running sensations through the internal database, I am going to have to guess here. I can't think of a single transmission related scenario that would produce a free-wheel sensation only at the very top of the revs. So I am assuming it isn't the transmission. My guess is...

And just because it's out there, if you have a Honda shop handy, ask for 5.5mm fuel hose. This is what Honda used back in the day, when Hodaka was still in business. I think you will find it fits the 6mm fittings just fine. It is, however, black, but if you are using a clear fuel filter, you can sti...

Trouble shooting the wiring is going to require verification of function using a multi-meter. If your headlight has an emergency switch (AC/DC) either the engine has to be running to test the headlight on AC or the switch has to be in the emergency position to test DC.

6mm fuel line would be appropriate for 6mm fittings. But the question comes down to available fuel line. If non-metric is all you can find, which do you use? 6mm = 0.236". Quarter inch fuel line should be nominally 0.25" ID. Inside dimensions may or may not match the designation of your fu...

6mm.