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by nevhunter
Thu Sep 03, 2020 12:40 am
Forum: Ariel Talk
Topic: Recommended torque settings for Iron VB head
Replies: 22
Views: 803

Re: Recommended torque settings for Iron VB head

The AJS sidevalves of the period you mention had compressible RING head gaskets just the same as the OHV's. Copper and asbestos and NO bolts .Just a bridge bearing on a single point and was redesigned in 1928 to use 4 bolts but still with the whole valves and all coming off. This made the exhaust se...
by nevhunter
Tue Sep 01, 2020 6:53 am
Forum: Ariel Talk
Topic: Recommended torque settings for Iron VB head
Replies: 22
Views: 803

Re: Recommended torque settings for Iron VB head

I'm not recommending having no head gasket for the sidevalves but you can often get home with none if both surfaces are dead flat and you spray both surfaces with aluminium engine paint evenly and let it dry. With a gasket once it lets go you have a fairly large gap and lots of heat in one place to ...
by nevhunter
Mon Aug 31, 2020 6:34 am
Forum: Ariel Talk
Topic: Recommended torque settings for Iron VB head
Replies: 22
Views: 803

Re: Recommended torque settings for Iron VB head

Iron head OHV VH or VG and the 350's always used lapping . Never had any problem unlike many other things I've owned over the years. As far as tension, the 26 tpi fine thread means less TORQUE needed. It's 3/8 and would think 45 Ft Lbs is enough. You never need to retighten(Unlike like the rocker bo...
by nevhunter
Mon Aug 31, 2020 2:25 am
Forum: W/NG Technical
Topic: New Restoration -
Replies: 6
Views: 953

Re: New Restoration -

Looks as if there's a crack there. Nev
by nevhunter
Mon Aug 31, 2020 2:22 am
Forum: Ariel Talk
Topic: KICK START JAMMING
Replies: 26
Views: 1942

Re: KICK START JAMMING

If you have a new quadrant I would not alter the 1/2 tooth. It's there for a purpose as long as it's a faithful replica or a genuine new one. You can check the action with the outer cover off. IF it catches right at the beginning of meshing it's one thing. If it jambs down your bushes in the two cas...
by nevhunter
Mon Aug 31, 2020 2:09 am
Forum: Four stroke
Topic: 1955 Huntmaster questions
Replies: 35
Views: 914

Re: 1955 Huntmaster questions

Force tension on the rear chain and see how much the front chain changes. This indicates wear in the gearbox sleeve gear or the large ball bearing race (less likely) That bike requires the highest quality chain. Not split rollers. Chain stretch or wear will give irregular feel of up and down . Nev
by nevhunter
Sun Aug 30, 2020 3:51 am
Forum: Four stroke
Topic: 1955 Huntmaster questions
Replies: 35
Views: 914

Re: 1955 Huntmaster questions

The primary chain may need a little tightening. Check it when fully hot. The iron Qualcast brake works OK till you get it real hot so long as it's running true and adjusted properly Have the wheel off the ground to check it properly . Sometimes a bit of lining material has to be removed from the tra...
by nevhunter
Sun Aug 30, 2020 1:50 am
Forum: Four stroke
Topic: MK1 Valve guide seals
Replies: 11
Views: 539

Re: MK1 Valve guide seals

As long as there's room for it when the valve is fully open. Fitting with the head still on requires the piston be at TDC and plenty of air pressure applied through the plug hole with a reliable fitting. I'd only do the inlets unless you have the technique fully mastered. You'd also have to block th...
by nevhunter
Sat Aug 29, 2020 2:21 pm
Forum: Ariel Talk
Topic: Engine rebuild - W/NG
Replies: 43
Views: 2003

Re: Engine rebuild - W/NG

Yes. the original is pretty "how's your father." One tiny tack of weld if you are lucky .Nev
by nevhunter
Sat Aug 29, 2020 12:57 am
Forum: Four stroke
Topic: MK1 Valve guide seals
Replies: 11
Views: 539

Re: MK1 Valve guide seals

I think that would work fine. If i recall correctly a thin formed stepped washer went on first on top of the springs then the "O" ring dropped in and the colletts and normal retainer went above it. Nev

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