Honda-SOHC

buger I would have piggy backed your order ken to half the postage if it helped, as I think thats the way to go on 'Mejima'

I've asked Mark if the postage is the same for 2 modules, will let you know when he replies, postage is bloody expensive from the states at the moment, $47 for mine alone. I am buying a blade fuse box as well though.

Just measured my 550F2 Nippon Seiki apertures Al and I can confirm they are 14mm.

The Dyna system as noted by Hondaman uses an additional 1 amp.

Read all Hondamans points at the bottom and you can see the benefits.

One advantage he doesn't state is that you retain the original coils, some systems don't and you always get members on here asking about Ohms for coils etc. The Dyna coils for instance aren't known for being the best.

Quote from: Oddjob on January 10, 2022, 02:52:58 AM

Are you saying the Nippon Seiki gauges use a different size bulb holder Al?

Most of the gauges/consoles that I have measured have 12mm lamp holder sockets. If there are other gauges that have 14mm sockets, please let me know.

I'll measure my Nippon Seiki gauges Al (for the 550F2) and let you know.

The easiest and to me, the best way to lap a valve is to use a tap wrench, the chuck type. Fit the valve with paste attached and grab the exposed stem with the chuck. You can then pull against the valve whilst oscillating the valve at the same time, far better than spinning the valve. You can vary the amount of pressure depending on how bad the surface is. You can check the condition of the face by lowering the valve as far as the chuck allows and inspecting the face. One of the better things about this method is that when you think you have a seal leave the chuck attached, fill the port with petrol whilst pulling on the valve, if it leaks past the valve head you can easily spot it, if it doesn't you have a decent seal without having to fit the springs etc. Of course you check the seal when the springs are attached using the same petrol method. Even a very small leakage can be seen by the petrol just misting through.

I had to do 24 valves on a CBX head one time and this method was the one I used. The sucker method is exactly that, for suckers. Believe me, this method really works.

Example of a chuck type tap wrench, make sure the jaws are big enough to take the stem diameter but at the same time make sure the chuck with fit down the valve spring hole.

https://www.ebay.co.uk/itm/393855967252?hash=item5bb3a52014:g:RYoAAOSwQeNh2Y1d

The very best tap wrench is the Snap On as it has a spanner fitment, saves you trying to grip the wrench with your fingers to get it tight enough.

https://buy.wesco.com/Tools-and-Installation/Drilling-Tapping-and-Milling-Tools/Tapping-Tools/Tap-Wrenches/SNAP-ON-TOOLS/Tap-Wrench-1-4-1-2-in-Tap-High-Carbon-Steel/TD50/p/78582828061-1

You could buy a normal one like the first link and grind some flats onto the chuck I suppose.

Quote from: Oddjob on January 05, 2022, 12:18:07 AM

You look ever so familiar Al, you ever worked in the North West?

Hi Oddjob

No you must have me mixed up with someone else

Best wishes Al


Sent from my iPhone using Tapatalk

Maybe you have a double, they reckon everyone does. My missus reckons I look like Jasper Carrot for some reason, never see it myself. George Clooney yes.

I think he's asking if anyone can see if it's open, as it may be shut by Covid etc or it may have closed for good.