I have some but I'm not ready to part with them just yet. They're pretty simple. I am willing to trace some onto paper, add some proper dimensions in the margins and mail that to you for nothing if you feel like making your own.

 

Yep take Scotts drawing by a piece of 3/16 cold rolled steel flat bar 3 inches wide. Hacksaw file and a drill and your set. Black marker the face leave the reed plates on and tap on the plate to transfer centers for the screw heads. Use a 1/4 inch driill and pop in releifs for the screw heads bolt them down and forget they are there.

 

Good idea shewie, whack up a PDF of them.

 

Sorry, I'm afraid I don't know how to generate a pdf file with my phone so a pic will have to do:

Sorry, it's a bit crude but the info is there. Mine are made from 1/4" aluminum for what it's worth.

Edit: you'll notice that opposing corners share the same radius - the smaller is 1/4" (6.35mm), the larger is 7/16" (.11.1mm)
The mounting horns are about 10.5mm (0.415") across with the hole sized at a little over 1/4". It looks like the machinist used a size G (.261", 6.65mm)) bit, but I imagine a 1/4" would work.

If anyone wants something else measured let me know.

 

I used 3/16 aluminum plate and made paper gaskets. The aluminum is easier to work with and still strong enough.

 

Thanks shewie, couple of questions.
what depth would the relief holes be for valve bolts?
Do the mounting holes have a specific radius on the lug to the main plate area to match the existing mating surface profile on motor?

If I get time I will model this up and create a cad sheet at scale and come back with it.

 

To be honest, I haven't even tried mounting them yet, but eyeballing the existing setup suggests that the profile of the plates matches the housing. I can't say how deep the relief he's need to be but I bet Brian can.

 

Here you go pete,why make your own unless your bored Honda CBR1100 CBR 1100 Blackbird Emissions Plate AIS Smog Pair Block OFF KIT | eBay

 

Here you go pete,why make your own unless your bored Honda CBR1100 CBR 1100 Blackbird Emissions Plate AIS Smog Pair Block OFF KIT | eBay

US mail postal rates suck, how can they justify that.:huh::idunno: This a better kit, I think this may be a member? Pair Valve Eliminator Smog Block OFF Plates Honda CBR 1100 XX Blackbird | eBay

 

Kev,
Those were the dubious ones that people waited weeks for and got the wrong ones. There is a better mob on eBay, but I think I might have a crack at making my own. Kinda like that, and making the 3d cad for it too. Also there is a forum member who has a few he got made up in Germany, might wait till he gets home in a month or two. So, a few options.

 

Kev,
Those were the dubious ones that people waited weeks for and got the wrong ones. There is a better mob on eBay, but I think I might have a crack at making my own.

Didn't realise there were some dud sets floating around pete,If you need a hand with the cutting out i could do it for you in our truck workshop,just holler,cheers kev

 

And the holes are exactly midway across plate?

 

Yep, that's what the "C" was to indicate.

 

Thanks Kev, should be ok. Bulk blu yep they were the better ones I think.
I wonder if that little nick 1/2 way along the side is important.

 

Relief just deep enough to get a full diameter on the drill bit if I remember correctly.

 

Ah, thank you yoda.

 

I think the little relief cut at the halfway point is to follow the profile of the ports. I don't believe it affects anything other than esthetics, though. The plates I have were commissioned by Lou (lois on this board) and there are quite a number of them installed with no problems that I'm aware of.
He probably saved a bit on the machine cost by leaving that edge straight.

 

I have made up a drawing but will wait to see proof of fitment and also the position and depth of rebating required for the valve screw relief. After that is done, I will post it up.

 

Ok, after a lot of fiddling around with measuring the mount horns I've revised those figures a bit: 10.5mm across and proud, 5.25mm radius. Wall thickness averages at 2mm. Machining inconsistencies have it slightly more in some areas and slightly less in others.
That's about the best I cans manage with my ham-fisted caliper abilities.

 

Wall thickness?

 

The thickness of the material that comprises the mounting horns that the bolts go through.

 

Shewie, sorry for the quality, but does this seem correct to you?

And the corners:

 

He probably meant width of the mounting horn as marked underneath. Also I think it is 2mm instead of 0.2mm. Correct me please if I'm wrong.

 

Yep, sounds reasonable and lines up with existing dimensions.

 

Something appears to be wrong with the smaller radius.

Just went back over my figures and found a conversion error. The smaller radius is indeed 1/4", making it 6.35mm, not 8.5mm. My bad.
Everything else looks good.

 

I bought a box of different BB bits and pieces on ebay and I found 4 PAIR Valve blocking plates. As Im only gonna use 2, I can sell another 2 for £15 with free postage in UK. Anyone interested?