Both would help, I am going to finish my testing and probably keep it the way it is. I am concerned about fuel mileage as well as horsepower.

Mike

No, it is not, I soldered the Hodie wiring harness on right at the Suzuki coils.

Mike Perrett

I believe 1969-70 had points, I used somewhere in the early 70's, anywhere between 1972 and 1975, could be even later. Look on e-bay and see If they look like the Hodie mag coils, that is what I did.

Scott, they look identical to the Hodaka coils.

Ed, This conversion was just like the one I did on my 175. The article is in a past issue of the Resonator Revisited, with the exception of the battery, I used a Motobatt MB2.5U (replaces a YB2.5). It will fit into the Hodaka battery boot, except it protrudes about 1/4" out from the end of the ...

I installed the conical drums on my son's Wombat trials bike and 98 Rat, both with 30mm forks.

Mike Perrett

If anyone is contemplating using early 70's Suzuki TS 250 mag coils in their 250SL, here is what I found. As for the TS250 ignition mag coil, the timing will be advanced a lot if you use the factory stator/case marks. I had to move the stator completely counter clockwise to bring the timing close to...

Scott, I can install a boost port in the 250 if the engine needs it, does not take a rocket scientist to do that.

Mike

Paul, As I stated, I never had a 250 before so therefore with the addition of a Suzuki TM 250 cylinder head, an unknown (maybe off a YZ 125) expansion chamber, FMF silencer and Baldwin air filter, I really don't know what to expect. Running a 170 main jet, seems a bit low, but was running very rich ...

Thanks Darrell, this 250 will do that, so will the 175. The 175 has a boost port which must make the difference in performance. Back in 1975 I had a Suzuki TS 250 that would top out at 70mph.
Mike

Is anyone riding both the 175 and 250 on a regular basis, on the road? I am in the process of setting up my 250SL for highway use. As of right now, the 175 seems to run better, especially with the fact that it has always had a serious power increase in the upper RPM scale, if one wanted more power. ...

What is the age requirement for this class, 75+ ?

Mike

Someone was looking for timing information for their 250 ED. Using a dial depth indicator and a degree wheel, the specs. for a 13 degree advance is .097 BTDC. 15 degree would be .127 BTDC.
Mike Perrett

Were there any revised ignition timing specs for the 250 SL/ED since they were introduced? I have the owners manual specs. I need to mark the flywheel/case for timing reasons and not go by the factory "align the stator/case marks". The reason for this is that I replace the stock mag coils ...

I installed one on my CW from a model 94, Wombat. Not sure about a model 97 or 98.

Mike Perrett

Harry told me the same thing. Ed, could you get detailed on the custom stinger and modern spark arrestor arrangement?

Mike Perrett

Bill, where do you get the BMW parts? I have a R75/6 I am interested in restoring.
Mike Perrett

The CW and Squirt tanks also have large filler holes.

Mike

Before I work on a wheel, I place the wheel (brake side down) on a flat surface. I then measure the distance from the flat surface to the edge of the rim and record that. Next I measure the distance from the brake drum to the out diameter of the rim and record that. When lacing up the wheel, you can...

Lousy cylinder head (one notch thicker than a pancake) and too lean oil mixture.

Mike Perrett

Yes, the Toads, 03 and 175SL limiter.

I have been working on a 1978 XT500 Yamaha for future vintage road racing. The lighting coil has two leads, one DC and one AC. I am assuming that coil was a more costly than a AC only coil found on Hodakas. Anyway, I believe it is a efficient way of power the lights and battery off of one unit. The ...

Has anyone done a test procedure on these regulators to see if they are good before being used?

Mike Perrett

Don't be afraid to do crankshaft alignment on your lathe.

Mike Perrett

Yes the brass hammer and also using a wedge or a C-clamp will get them in line, but sometimes it takes time. I just spend a lot of hours on a Yamaha SR500 crankshaft. I thought I was going to wear out the floor between the lathe and the work bench (where the adjustment were made). I pressed together...