Viva HB

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Re: Viva HB

Postby wolf » Thu Jan 13, 2011 1:35 am

Cunifer is fine, as it's a monel type alloy (Cu-Ni) with much better properties. I was worried you were using soft copper tubing.
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Re: Viva HB

Postby pbottomley » Thu Jan 13, 2011 1:30 pm

Thats stuff is a lot better than copper, easlier to bend and twist by hand without it kinking as well... :D Ive used it a lot on all my Vivas when replacing brake line and fuel line, it polishes up well and looks more brass like than copper.
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Re: Viva HB

Postby yoeddynz » Sat Jan 15, 2011 12:52 am

Here in NZ copper is not allowed any more except on trailers. But the cunifer alloy type that scott is using is fine.

Personally I see no problem with copper so long as it is the proper rated stuff- ie it will have a max pressure printed on it. And it must be secured well so vibrations wont affect it.

I just did my Viva with steel tubing (bundy tube) for the first time and it was much easier than I thought although it did kill my aged cheap flaring tool. So I bought a new tool that is designed with steel in mind and it was easy. Very satisfying. But we dont have road salt in NZ (and I live in a very dry climate) so rust wont be an issue. I would never fit steel in the UK unless my car was a summer only queen (which I dont agree with). I think most Euro cars use cunifer now?
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Re: Viva HB

Postby lambaj » Sat Jan 15, 2011 3:19 am

Copper brake pipe has been available in the Uk for many years. The correct pipe is a 3/16th inch OD with a thick wall giving about a 1/16" ID. This is plenty strong enough to handle brake system hydraulic pressures. yoeddynz is correct about ensuring suitable support for the tube as copper does work harden.
I have heard a few stories of brake failures when people have used 3/16th OD copper tube used for pumbing etc, this is thin wall and can fail.
Kunifer pipe is good, i've used both copper and kunifer types with no issues in 25 years of home made brake pipes......A good flare is of course essential ands it is well worth practicing a few flares if you are not familiar with the process before comitting to your final pipes.

Keep it safe...... 8)
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Re: Viva HB

Postby opelscott22 » Thu Jan 27, 2011 6:39 pm

Nearly there now, made some heater pipes from jet engine oil pipes (dont tell work...), next on the list is the exhaust.
When I made the manifold downpipe I made it go under the gearbox mount but it sits too low to the ground so Ill have to mod it to go over the mount and see how tight I can get it to the body.

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Re: Viva HB

Postby viva les vegas » Thu Jan 27, 2011 6:51 pm

Don't tell work what? I didn't hear anything :wink: That's looking really good. Where'd you get the radiator? Was it an off the shelf one, or did you have to get it custom made? The one I got last year cost me the best part of £100, and it's only standard fitment, but need something bigger and better for the 305, when it goes in
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Re: Viva HB

Postby opelscott22 » Thu Jan 27, 2011 7:06 pm

The radiator is from Alimax, its for a mk1 escort. its the big tank version to give a bit more capacity. I cant remember how much it was, wasnt cheap though...

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Re: Viva HB

Postby hbpeter » Fri Jan 28, 2011 12:41 pm

That looks totally amazing! You sir are a genius. Arnt you worried about sucking small animals ans children into those trumpets? :respekt:

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Re: Viva HB

Postby opelscott22 » Sun Jan 30, 2011 5:38 pm

i managed to get another bottle of Argon yesterday so I got on with the exhaust today. I wasnt happy with the downpipe fromn the manifold as it was a bit low to the floor so I cut it off and started again. I made it go over the gearbox for a bit more ground clearance.
The more TIG I do the better Im getting at it, typical, nearly finished!!

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Re: Viva HB

Postby yoeddynz » Tue Feb 01, 2011 8:27 pm

:shock: Wow Scott- that looks great. Should I say Great scott?.. or Great scott Scott?...

...anyway- My tig skills are crap- one day though I will invest in a nice wee welder as and practice practice because it opens up so much more nice neat ways about building things. Things like sexy manifolds. And sexy bike frames. Where do you work- building jet engines? explains the great work you do.

Your radiator fan switch is mounted at the top of rad - I was told by local radiator firm to mount my switch at the bottom as that is where the proper reading should be taken? most modern cars have them at the bottom but I have noticed a few after market rads putting them at the top? What temp does that one switch 'on' at?
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