Valve Covers & Points Cover (2020)

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olympus

olympus

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Most of the photos showing peoples builds always seem to show smooth/polished surfaced valve & points covers..
Mine on the other hand are finned.
I don't intend changing them...but I'd be interested to know
1. Are these correct for the Commando
2. If they are correct, When did they stop using the finned style
3. If they are correct why do I see so few on here
Valve Covers & Points Cover (2020)
Valve Covers & Points Cover (2020)
 
The originals were not finned. Smooth aluminum that can be highly polished if desired.
 
I believe Dunstall marketed them back in the day, and possibly others too. I have both valve and points covers, though my points cover is way less 'pedestrian friendly' than yours, Malcolm!
 
www.ebay.co.uk

DUNSTALL NORTON COMMANDO 750 850 NOS FINNED POINT COVER /VB35/ | eBay

Inventory is updated daily.
www.ebay.co.uk
£135.46 :D

Often copied
www.eurojamb.com

Dunstall Norton Finned Points Ignition Cover w/Bolts SET 750 850 Commando

So lovely. Should fit all Norton Commando. These covers are CNC machined from billet, bead-blasted for a sand-cast look, then fins polished to high luster. Includes stainless hardware shown, with longer cover screws than standard. Bolts right on. Bling it up!
www.eurojamb.com www.eurojamb.com
www.eurojamb.com

Norton 'Dunstall' Finned Valve Cover SET 650 750 850 Commando Atlas N15

So lovely, near ringers for what Dunstall supplied, back in the day. Should fit all Norton twin, to my knowledge. These covers are CNC machined from billet, bead-blasted for a sand-cast look, then fins polished to high luster. And they fit current production gaskets MUCH better than the OEM...
www.eurojamb.com www.eurojamb.com
 
EstuaryBoy said:
I believe Dunstall marketed them back in the day, and possibly others too. I have both valve and points covers, though my points cover is way less 'pedestrian friendly' than yours, Malcolm!
Click to expand...
They must be for the US market then as they drive on the wrong side of road:D:eek:...let the onslaught commence!!
 
L.A.B. said:
www.ebay.co.uk

DUNSTALL NORTON COMMANDO 750 850 NOS FINNED POINT COVER /VB35/ | eBay

Inventory is updated daily.
www.ebay.co.uk
£135.46 :D

Often copied
www.eurojamb.com

Dunstall Norton Finned Points Ignition Cover w/Bolts SET 750 850 Commando

So lovely. Should fit all Norton Commando. These covers are CNC machined from billet, bead-blasted for a sand-cast look, then fins polished to high luster. Includes stainless hardware shown, with longer cover screws than standard. Bolts right on. Bling it up!
www.eurojamb.com www.eurojamb.com
www.eurojamb.com

Norton 'Dunstall' Finned Valve Cover SET 650 750 850 Commando Atlas N15

So lovely, near ringers for what Dunstall supplied, back in the day. Should fit all Norton twin, to my knowledge. These covers are CNC machined from billet, bead-blasted for a sand-cast look, then fins polished to high luster. And they fit current production gaskets MUCH better than the OEM...
www.eurojamb.com www.eurojamb.com
Click to expand...
There not cheap....
 
Webco in the US also made them. For the Triumph they made a point cover and a rocker feed that were finned also ( I have on my '68 TR6R). I like the look but very expensive now - worth some good $$$$.
 
From a functional perspective, I've found they make loosening /tightening the rocker cover nuts a PITA.
Prefer the stock ones.
 
baz said:
Is this to keep the trispark inition cool?
Click to expand...

Maybe but it likely to be more use keeping the bike looking cool :cool:

It would keep the Trispark cool if there was a gap at the front to let air in and one at the rear to let it out.

Boyer did this with the MK1 that had the electronics in the timing cover

Valve Covers & Points Cover (2020)


Valve Covers & Points Cover (2020)


Before then giving up and putting the electronics in a box to be mounted remotely.
 
kommando said:
Maybe but it likely to be more use keeping the bike looking cool :cool:

It would keep the Trispark cool if there was a gap at the front to let air in and one at the rear to let it out.

Valve Covers & Points Cover (2020)


Valve Covers & Points Cover (2020)
Click to expand...
Unfortunately the rain as well...:oops:
 
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