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1
AC Weller Engine / Re: Spark plugs
« Last post by Robin A Woolmer on October 19, 2019, 14:12:14 »
You will clearly have improved performance when it is reassembled, hope all will go well.

Robin
2
AC Weller Engine / Re: Spark plugs
« Last post by mmouss on October 19, 2019, 09:17:42 »
Yes Robin, the water jacket is in very good condition and I do not think I will have to remove the head studs as the top face seems correct.
Even if it is not original, I will keep this block and fit it with new liners & pistons.

I checked and cleaned the cylinder head and noticed the ports castings were very rough from new, so I spent some time smoothing and adjusting them with the manifolds.
Also noticed the gas holes in the intake gaskets between manifolds and head were protruding 2 or 3 mm all round into the ports, which seems far from optimum in terms of efficiency!!!
 
3
I'll contact both Joe and Simon and include this thread as it may help in this quest!
Awesome help guys, I will let you know what transpires with Moto-Lita
4
If You mount a "Cobra barrel boss" to your Ford column and column covers you will have:
1. the steering wheel more far away from the switches
2. a gap between boss and switch covers
3. no cancelation function because the cancelation rib on a Ford boss is spaced on a bigger diameter(~104mm) then the Cobra boss has on its bottom end. Bottom end OD and top OD for the Cobra boss are more or less the same as the AC cover ~ 84mm


If You want to keep the Ford switch gear and covers and as well the distance between steering wheel and stalks than You could:

- Buy a Ford RS steering wheel boss like this: https://www.ebay.com/itm/Ford-RS-steering-wheel-hub-H84-SX-3K699-AA/303272334583?epid=4027154596&hash=item469c7094f7:g:-rgAAOSw4VpcFrKy
- have a Moto lita steering wheel (closed rim center or splitted) fabricated with the Ford RS or Nardi hole circle which is 6x74mm with M6 screws
- check with Moto Lita if the Ford spaced M6 hex socket countersunk head screws/heads will be covered by the original steering wheel badge which has a OD of 84mm

Be aware that the original OEM Cobra steering wheels and bosses have not equally spaced holes, they have a PCD of 62mm on a diagonal line (1 o'clock to 7 o'clock holes) and will not fit to a "normal" equally spaced PCD at standard hubs even if they have the required hole circle diameter.

Below You will see what I described above.

   
5
Joe Kaluza is the Director of Engineering at Moto Lita - might be the better contact if you need some work done that is non-standard. Contact e-mail is joe (at symbol) moto-lita.co.uk
6
Great information
Maybe I can call Simon at MotoLita and have the sierra center hole made in the MKIII boss?
Then I can shave it down so it can reach then bam, done...  :)
7
Cobra (Thames Ditton) Forum / Re: indicator self cancelling assembly
« Last post by rsk289 on October 17, 2019, 22:03:47 »
Gerry Hawkridge can supply stainless steel tanks.  His indicator switches are higher-quality VW ones (not the cheap repros), as shown in Dan's pictures.  I don't think he has any with the early switchgear shown - I've never seen one of these.
On UK-market cars, the fragile horn switch Dan refers to operates the horns through a Lucas 6RA relay.

Roger

That didn't come out quite right - what I meant was that the switches Gerry sells are better quality VW ones rather than cheap repros.  They are not the AC-supplied ones Dan mentions.

Roger
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I used both, the Nardi has the same diameter as the Moto Lita 6 bolt, just the bolt hole circle is different.

 There is an adapter on the market to use the Nardi on the 9 bolt Moto Lita boss.. That adapter can be made on a lathe with the required bolt hole circle used on the targeted steering wheel.
Mark III steering wheels ( if not the Splitter rim version) can be ordered via Moto Lita UK with custom made, individual pitch circle.

update:
The pic shows the Nardi with the adapter to fit the Ford column cover and switch beside the Moto Lita Cobra split rim version.
That kind of adapter you need to do for the conversion, painted in matt black it will work in the Ford environment.

First, decide on the steering wheel design,  split rim or closed.

https://www.moto-lita.co.uk/steering-wheels/?filters=639
9
Cobra (Thames Ditton) Forum / Re: indicator self cancelling assembly
« Last post by rr64 on October 17, 2019, 15:27:45 »
Gerry Hawkridge can supply stainless steel tanks.  His indicator switches are higher-quality VW ones (not the cheap repros), as shown in Dan's pictures.  I don't think he has any with the early switchgear shown - I've never seen one of these.
On UK-market cars, the fragile horn switch Dan refers to operates the horns through a Lucas 6RA relay.

Roger

The Hella® 51/51 assemblies shown in Darrell's images (the original switch for CSX2295) and mine with the adapter collar (original to a friend’s CSX25xx chassis) are ones AC Cars installed during the chassis builds day one.

VW® new cars wise there were multiple versions of assembly line and service switches marked as complying with SAE and European standards in different time frames.  I have had VW assembly line versions marked as meeting 1962, 1963, or 1964 SAE standards.

Since 1983, in my hunts and purchases of most versions of VW production, service, and aftermarket switches the only switch that mates perfectly with the collar adapter AC Cars came up with is the Hella one. Wiring gauges, color codes, and lengths are not the same either.  I have used new SWF® brand replacements on three cars and wished their wires were longer. On two cars I modified the switch body to slip fit over the AC Cars adapter collar. For the last car I repaired I bought a universal one fits all adapter collar from Nick Acton. The broken switch on the car was a used VW assembly that had been forced over the adapter and collar. The marks on the parts indicated that a big hammer was used to drive everything together. After a considerable time trying to remove the switch I resorted to removing the entire steering column and taking it to the work bench. It took a large hammer to beat the offending non-stock switch off. It wasn’t an original and the stalk was broken so finishing its destruction was not a concern. I did have to do some metal work on the steering column because it had been slightly crushed when the VW switch was driven on.

When all AC factory pieces are used assembly is simple, easy, quick, and the wires are sufficiently long to comfortably mate up with the main loom behind the dash fascia.

Maybe 9 of 10 the Hella 51/51 AC Cars production switches I have come across in these decades of hunting were damaged ones removed from American market Cobras CSX2201 and later and early 427 Cobras.  Over the decades I have talked with quite a few people that removed their original Hella assembly because they thought it was not working, tossed it in the trash, and replaced it with either a used VW switch or a new SWF replacement only to find out that they still had not solved their problem.  (A similar situation often happened with the tail lamp relays, i.e. remove, discard, and replace only to still have a problem.)

Some of the VW or aftermarket switches have raised text on the outside of their main die casting.  This raised text is a dead giveaway that the switch is not a production one for a Cobra.  This text can easily be detected in use.  Some owners and restorers will sand away this text carefully and repaint the switch to make it more authentic looking.

Dan
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Cobra (Thames Ditton) Forum / Re: indicator self cancelling assembly
« Last post by rsk289 on October 16, 2019, 23:03:10 »
Gerry Hawkridge can supply stainless steel tanks.  His indicator switches are higher-quality VW ones (not the cheap repros), as shown in Dan's pictures.  I don't think he has any with the early switchgear shown - I've never seen one of these.
On UK-market cars, the fragile horn switch Dan refers to operates the horns through a Lucas 6RA relay.

Roger
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