The Triumph Dolomite Club - Discussion Forum

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PostPosted: Tue Nov 21, 2017 11:19 pm 
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Next task for me is to refit the rest of the brake lines, which involves the run along the front chassis leg (which was replaced years ago). It doesn't have holes for the brake pipe clips in it though, so I need to drill them. The clip I have here is 1/4" round the base of the bit that goes in the hole - do I need a 1/4" bit or can I use a metric equivalent (I guess 6 or 6.5mm) without it falling out?


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PostPosted: Tue Nov 21, 2017 11:34 pm 
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Quote:
Next task for me is to refit the rest of the brake lines, which involves the run along the front chassis leg (which was replaced years ago). It doesn't have holes for the brake pipe clips in it though, so I need to drill them. The clip I have here is 1/4" round the base of the bit that goes in the hole - do I need a 1/4" bit or can I use a metric equivalent (I guess 6 or 6.5mm) without it falling out?
Just do a test hole on something else.

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Triumph Dolomite Sprint,RNK 957W

Built 26/6/1980 (one of the last built), Auto, Porcelain White - Genuine Mileage 52,820 (warranted).

Only 3 previous owners, (2 within the same family).

Supplied by Lavender Hill Garage Ltd, Enfield, London, by garage owner Jimmy Metcalfe on 30th September 1980 to Geoffery Robinson, Enfield.

Club Membership No: 2017092


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PostPosted: Wed Nov 22, 2017 12:23 am 
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The clip hole on these is pretty critical on size, if it's even a tiny bit too big, the clip won't stay in place! Since 6mm is slightly OVER 1/4" even that might be a bridge too far! As Murdo said, you can try by experiment on a spare bit of steel and if that doesn't work, fork out for a 1/4" drill bit, i'm sure they are still available!

Steve

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'73 2 door Toledo with Vauxhall Carlton 2.0 8v engine (The Carledo)
'78 Sprint Auto with Vauxhall Omega 2.2 16v engine (The Dolomega)
'72 Triumph 1500FWD in Slate Grey, Now with RWD and Carledo powertrain!

Maverick Triumph, Servicing, Repairs, Electrical, Recomissioning, MOT prep, Trackerjack brake fitting service.
Apprentice served Triumph Specialist for 50 years. PM for more info or quotes.


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PostPosted: Wed Nov 22, 2017 8:18 am 
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Or buy some new clips, I bought some from Robsport (numpty9 on ebay but 'phone was easy) and where I couldn't re-use the old ones I found I had to drill the hole with a larger drill bit, as Steve says the size is that critical. The new ones are black plastic, the old ones were white. And I bought way more than the number needed as spares, and used them!


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 Post subject: No, no….
PostPosted: Wed Nov 22, 2017 1:41 pm 
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Since 6mm is slightly OVER 1/4" even that might be a bridge too far!
There are 25.4mm in one inch, so 1/4" = 6.35mm


Ian.

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PostPosted: Wed Nov 22, 2017 2:11 pm 
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Controversial but why not buy an imperial drill bit? They aren't difficult to find.

Alternatively have you considered using something like a small P clip which can be attached using a self tapper?

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1961 Chevrolet Corvair Greenbrier Sportswagon
1980 Dolomite Sprint project using brand new shell
2009 Mazda MX5 2.0 Sport
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 Post subject: Re: No, no….
PostPosted: Wed Nov 22, 2017 9:01 pm 
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Quote:
Quote:
Since 6mm is slightly OVER 1/4" even that might be a bridge too far!
There are 25.4mm in one inch, so 1/4" = 6.35mm


Ian.
My bad Ian, I was remembering my clutch pipe conversion on the Carledo where I put the 6mm pipe into an imperial union for the master cylinder and got it the wrong way round, I had to drill the 1/4" union to take a 6mm pipe which is what made me think it was that way round.

Steve

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'73 2 door Toledo with Vauxhall Carlton 2.0 8v engine (The Carledo)
'78 Sprint Auto with Vauxhall Omega 2.2 16v engine (The Dolomega)
'72 Triumph 1500FWD in Slate Grey, Now with RWD and Carledo powertrain!

Maverick Triumph, Servicing, Repairs, Electrical, Recomissioning, MOT prep, Trackerjack brake fitting service.
Apprentice served Triumph Specialist for 50 years. PM for more info or quotes.


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PostPosted: Thu Nov 23, 2017 10:47 pm 
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Quote:
Quote:
Next task for me is to refit the rest of the brake lines, which involves the run along the front chassis leg (which was replaced years ago). It doesn't have holes for the brake pipe clips in it though, so I need to drill them. The clip I have here is 1/4" round the base of the bit that goes in the hole - do I need a 1/4" bit or can I use a metric equivalent (I guess 6 or 6.5mm) without it falling out?
Just do a test hole on something else.
That would make sense, wouldn't it? #-o

:mrgreen:


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