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by nevhunter
Sat Jun 25, 2011 1:16 pm
Forum: Four stroke
Topic: Valve adjusters on singles
Replies: 10
Views: 1894

Vincent, Valve stem caps. I have been making my own but would prefer a qualitycontrolled product, if I can source it. Thanks Nev
by nevhunter
Sat Jun 25, 2011 3:34 am
Forum: Four stroke
Topic: Valve adjusters on singles
Replies: 10
Views: 1894

Think I tried them years ago. Don't have any running on my stuff now. Think the main problem was that they can't be wound up far enough if the valve is worn into the seat, or other wise a bit long. Can you guys get good reliable caps?. I would like to be sure that they are good material. Nev
by nevhunter
Fri Jun 24, 2011 3:16 am
Forum: Four stroke
Topic: improving VB performance
Replies: 19
Views: 5669

I have built some fast Ford flatheads but a while back. and I fiddle with Harley flatheads and Pocket valves as well Ok, Enlarge the inlet valve, use the better cam, and play with the inlet port length. A dome piston would help, ( ALA the Hudson Terraplane and Ford mercury ". Does the later all...
by nevhunter
Thu Jun 23, 2011 12:01 pm
Forum: Four stroke
Topic: improving VB performance
Replies: 19
Views: 5669

Please, Don't be offended by what I am going to say . Side valve engines have a couple of problems if you want to get power out of them. There is a lot of heat around the exhaust port area and a lot of resultant distortion. This causes a lot of blow-by. Also the combustion chamber shape is far from ...
by nevhunter
Tue Jun 21, 2011 12:47 am
Forum: Four stroke
Topic: Draining a BAP gearbox
Replies: 4
Views: 1195

Once again I follow Dave but have to say again that I am not an expert. The grease can go pretty hard. I don't reallly like putting Kero etc in it as you don't know what you are stirring up. If the bike has been in constant use, I would be inclined to add a fair bit of OIL( overfill), and give it a ...
by nevhunter
Thu Jun 16, 2011 12:37 pm
Forum: Ariel Talk
Topic: ENGINE
Replies: 7
Views: 2196

Bikes to original specs are the go and have more value generally. If you want to, you can always return it to original as parts don't have to be altered at all. I don't even add any extra chrome or aluminium polishing than original, on my bikes if I can help it. . The Military W/NG has sand cast fin...
by nevhunter
Thu Jun 16, 2011 12:11 pm
Forum: Four stroke
Topic: 1928 piston
Replies: 4
Views: 926

that number is a Polson ( Australian made. LX means low expansion). Do those pistons run the 1"" gudgeon same as the '30 models. Nev
by nevhunter
Thu Jun 16, 2011 2:13 am
Forum: Main Chat Forum
Topic: Think an Ariel is expensive?
Replies: 2
Views: 915

Broughs would have to be one of the most collectable bikes about, because amongst other things they were never mass produced. Even the "funny" models are valuable because of the name. Some other brands might have a "better" model as the brough was made from a lot of "bought ...
by nevhunter
Tue Jun 14, 2011 9:43 am
Forum: Ariel Talk
Topic: ENGINE
Replies: 7
Views: 2196

Tom, everything can be fitted on that Ariel. You could turn it into a 500. Parts interchangeability is almost total. If you are going for originality hang out for the right parts. If you want something to ride, and want more grunt, you can put VH flywheels ( the earlier ones are the best) and even a...
by nevhunter
Mon Jun 13, 2011 2:50 am
Forum: Four stroke
Topic: oil leakage timing case / magneto
Replies: 21
Views: 5641

I'm not calling myself an expert, but alll engines "breathe' when they are running,.They harder they run the more they breathe. This is caused by blowby past the pistons, so pressure will build up in the crankcase if the outlet restricts the flow of gas. Some people bolt a dummy plate on the he...

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