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Mustang Chat Room / Re: Inertia seatbelts for a 66 mustang fastback
« Last post by rp1966 on Today at 05:32:52 PM »
Yep. Any sort of modification now requires you to undertake all these other safety modifications. Bullshit inertia seatbelts in the back is just one example. There are many others.
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Tech Torque Pre 1973 / Re: Ignition Upgrade
« Last post by Shep69 on Today at 02:23:15 PM »
:agree: Ice installed on mine and no issues, best customer service out there.

Thanks Booah
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Tech Torque Pre 1973 / Re: Ignition Upgrade
« Last post by Shep69 on Today at 02:21:39 PM »
Shep,
I'm going to give Michael at ICE Ignition a plug, I was working with Haltech on supplying me something different on my engine build. Michael came up with a 8 + 1 camshaft sensor, LS1 individual coils to go along with my Haltech ECU.
This may not should you but his other products will!
Cheers Phil.

Thanks Phil
4
Cars For Sale By Private Sellers / Re: Selling my 69 Cobra Jet
« Last post by Darren Dorcich on Today at 01:56:35 PM »
15x7 front with 245/60r15
15x8 rear with 255/60r15
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Tech Torque Pre 1973 / Re: Brake Combination Valve Operation
« Last post by SMH00N on Today at 11:38:40 AM »
Try this from the Ford repair manual
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Tech Torque Pre 1973 / Re: Brake Combination Valve Operation
« Last post by SMH00N on Today at 10:58:10 AM »
Some sites with good brake tech without Fake News are Mustang Steve and West Coast Classic Cougar. WSCC has a lot of brake stuff including the OEM stuff.
Also hit up 69stang.com as all they are are 69 and 70 models with a lot of intel there.

I have 2 prop valves here surplus to requirement if you wanted to buy one.
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Tech Torque Pre 1973 / Re: Brake Combination Valve Operation
« Last post by mk1_oz on Today at 10:57:02 AM »
The printed picture is definitely a different valve as it has a metering valve on the front circuit.

My diff pressure valve is already centred as I have made up a tool to keep it there (see OP).

I might just be a parts changer and buy another CV to see what that one does in the car.

Thanks for all the interest and input

Hello SMHOON - the same small Ford Mk1!  Other pictures of the 60's CV show the rear inlet as the top and the rear outlet on the bottom which is what I have done.  Your pictures shows it the other way around.  I need to investigate this more....
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I'll pm you ron hoffman's contact details. He's in the mustang club and has done many repairs, assemblies, conversions etc. He's also won silver concourse etc for his own car.
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Tech Torque Pre 1973 / Re: Brake Combination Valve Operation
« Last post by SMH00N on Today at 10:55:00 AM »
Actually, now I read the original post, he's already done that:
I machined up a fitting to hold the brake pressure differential valve in the centre

MK1, from my experience with brakes I ditched the OEM proportioning valve. I put an XB Falcon master cylinder on the OEM booster (you need to elongate the master mount holes and adjust the booster pushrod) and went with a universal brake proportioning valve.
This gives you direct porting off the MC to the front brakes and the ability to reduce the rears locking up.

Everything I did with brakes, from OEM MC, prop valve, lines, etc gave me locked rear brakes even on gentle application.

With this set up I have a good pedal, progressive brake modulation and no rear locking (possibly as a result of reducing rear brake pressure but the Rego inspection people like it) along with the benefit of being able to pull the booster and MC as one unit due to smaller size.

This doesn't fix your issue with no fluid but if the Prop valve you have is aftermarket you are possibly looking at a bad valve?

The attached pic is how a prop valve should be fitted in a '70. It runs horizontal, not vertical and is different to a '69; but I think the rear brake lines are reversed. And the second pic shows another version with the rear inlet and outlet in what I think are the correct positions.


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Tech Torque Pre 1973 / Re: Brake Combination Valve Operation
« Last post by AussiePhil on Today at 10:45:56 AM »
Your drawn diagram (well drawn as it is) appears to make no sense to me as far as the proportioning valve goes.

The idea of the proportioning valve is to stop the rears locking under emergency application. Your diagram suggests that a hard application would force the valve back (assisted by the spring no less) forcing the port open and the rears would lock up - but it matches this diagram I found online:


It suggests that your routing of the front lines isn't exactly as per design, but that may not make any difference.

I'd like to read the rest of the paragraphs following the bottom of the photo where it's cut off!

Hi all, I don't think this is the same brake valve, this one has centering springs on the shuttle!
Cheers Phil
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