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by nevhunter
Tue Aug 11, 2020 1:51 am
Forum: Ariel Talk
Topic: Engine rebuild - W/NG
Replies: 28
Views: 657

Re: Engine rebuild - W/NG

They usually break off as the weld is just a tack. You can't use a normal type seal as the gearbox has to be able to be adjusted back and forward Check for the spacer 2'' long between the rear engine plates on the long stud for the footrests. IF it's missing the plates will be distorted. Note the fi...
by nevhunter
Mon Aug 10, 2020 3:01 am
Forum: Ariel Talk
Topic: KH update.
Replies: 7
Views: 167

Re: KH update.

I think you will find it quite a nice bike in a lot of ways. They are very easy to start due long kicker and being a 500 twin with auto advance. I have a similar with Anstey rear end but I've not ridden it far and noticed it wasn't really good balance as far as the motor was concerned, so I will do ...
by nevhunter
Fri Aug 07, 2020 3:25 am
Forum: Ariel Talk
Topic: Engine rebuild - W/NG
Replies: 28
Views: 657

Re: Engine rebuild - W/NG

It's the heart of the engine. I see a lot of them not done well. That's why I do ALL my own and a few others . Some "wheels" are pretty SAD in the tapers. Some are real good and can set up with a straight edge..IF you know someone who you can trust get it done by them. You have a BIKE that...
by nevhunter
Wed Aug 05, 2020 4:43 am
Forum: Ariel Talk
Topic: Engine rebuild - W/NG
Replies: 28
Views: 657

Re: Engine rebuild - W/NG

With the B/E play, looks like you need a full rebuild. Sometimes the timing side ball bearing main goes first. Nev
by nevhunter
Tue Aug 04, 2020 12:22 am
Forum: Ariel Talk
Topic: Engine rebuild - W/NG
Replies: 28
Views: 657

Re: Engine rebuild - W/NG

Carefully drill that hole a bit deeper and tap a little more thread and make a slightly longer bolt for it. Use a drill press so you don't damage the existing threads AT ALL. Dirt (and carbon) in these blind holes causes a lot of splitting of the bosses one sees with these heads. Nev
by nevhunter
Sat Aug 01, 2020 1:12 pm
Forum: Four stroke
Topic: Oil Leaks - Singles
Replies: 27
Views: 654

Re: Oil Leaks - Singles

High pressure is just loading the pump and may actually reduce the total flow. There's no pressure registered from the normal Big end feed nor should there be. From my experience and reported racers of the period, increasing the oil flow causes oil leaks, a hotter running motor and less power. The e...
by nevhunter
Sat Aug 01, 2020 1:29 am
Forum: Four stroke
Topic: Oil Leaks - Singles
Replies: 27
Views: 654

Re: Oil Leaks - Singles

. Keith your initial problem seems to be the oily Magdyno.. You need a seal that runs direct on the drive shaft or you just get oil into the magneto. I have at times used LEATHER. Punch a neat good fit on the shaft hole and make it about 1.5 inches OD and glue to the mag cover face with contact ceme...
by nevhunter
Sat Aug 01, 2020 12:44 am
Forum: Four stroke
Topic: VH crankcase joint
Replies: 9
Views: 346

Re: VH crankcase joint

The thickness of the lip can vary depending on the casting inner dimensions. I've just recently rejected a case similarly damaged. You could weld it and remachine CAREFULLY but most likely it will distort enough to be a problem when you weld a fair distance along the edge.. IF you choose to hollow d...
by nevhunter
Fri Jul 31, 2020 9:47 am
Forum: Main Chat Forum
Topic: Identify a ariel
Replies: 32
Views: 1549

Re: Identify a ariel

Most of them have a "qualcast' iron drum of similar design but smaller than the usual front girder fork brake but I understand SOME W/NGs had a steel drum fitted. They all had a speedo drive from the front wheel. Both with a rather small 1/2 inch axle. Nev
by nevhunter
Fri Jul 31, 2020 9:33 am
Forum: Four stroke
Topic: Oil Leaks - Singles
Replies: 27
Views: 654

Re: Oil Leaks - Singles

Any engine needs ADEQUATE breathing. The SV configuration of cylinder is noted for distorting the bore near the exhaust valve due obvious uneven heating due high port temps. This is not a brand thing. it was a common problem with the high output 750 flat trackers in the USA. Extra blowby is experien...

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