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Colour tune spark plug

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chance_favours

Post subject: Colour tune spark plug

Posted: Sun Jul 26, 2009 3:53 pm

848cc

Joined: Sat Jul 18, 2009 4:16 pm
Posts: 11
Location: Townsville, QLD

Has anyone ever used a colour tune spark plug ? It's a unique test spark plug with a glass top that takes the guess work out of carburettor tuning.

Pros / cons ?

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Mike_Byron

Post subject:

Posted: Sun Jul 26, 2009 4:37 pm

1275cc

Joined: Mon Sep 19, 2005 4:57 pm
Posts: 3635
Location: Gulgong

Yeah a few of us have it. Its pretty good but really only good for setting the setting at idle when you have an SU.

The profile of the needle is what really determines the ultimate correct needle for the engine all the way through its rev range. Great for a standard engine though.

Mike

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sgc

Post subject:

Posted: Sun Jul 26, 2009 5:53 pm

This space for rent

Joined: Thu Feb 08, 2007 12:40 pm
Posts: 5455
Location: Melbourne

As Mike says, the Colourtune won't help you select the right needle but if you have the right one, it's a great way to set the idle mixture (which is all you can set on an SU anyway).

It's pretty much invaluable if you have twin carbs, as it allows you to get both carbs to exactly the same mixture with no fuss.

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Simon

The adventures of an owner builder in the Tallarook Ranges

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BBY755

Post subject:

Posted: Sun Jul 26, 2009 6:24 pm

1098cc

Joined: Wed Aug 06, 2008 10:14 am
Posts: 1370
Location: Sydney

There is a whole topic with pics on this thing - think I can find the bugger again?????

Just reading yesterday...where is it now???

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Cooper S Mk2
Cooper S Mk1
ex Cooper S Mk2, various Morris 1100s, 1300s, 1500s, Leyland Sherpa!

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mini maxx

Post subject:

Posted: Sun Jul 26, 2009 6:50 pm

How thoroughly outragious, a glass spark plug thingy...i gotta get one so all my friends can go oooooohhhhhhh aaaaaahhhhhh :lol:

Thats right up there with see throo dizzy caps :lol:

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drmini in aust

Post subject:

Posted: Sun Jul 26, 2009 6:52 pm

religious status

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39757
Location: near Baulkham Hills, NSW

mini maxx wrote:

How thoroughly outragious, a glass spark plug thingy...i gotta get one so all my friends can go oooooohhhhhhh aaaaaahhhhhh :lol:

Thats right up there with see throo dizzy caps :lol:

Unlike a see thru dizzy cap, this is not designed to be run under power. That will melt the bugger... :lol:

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:

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mini maxx

Post subject:

Posted: Sun Jul 26, 2009 7:10 pm

Yeah but my mates will go oooooohhhhh aaaaaahhhhhh any way cos they aint too smart :lol:

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simon k

Post subject:

Posted: Sun Jul 26, 2009 7:41 pm

Yay For Hay!

Joined: Wed Sep 08, 2004 9:27 pm
Posts: 15912
Location: Wodonga - Vic/NSW border

http://www.ausmini.com/forums/viewtopic ... ht=gunsons

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BBY755

Post subject:

Posted: Sun Jul 26, 2009 8:03 pm

1098cc

Joined: Wed Aug 06, 2008 10:14 am
Posts: 1370
Location: Sydney

Thanks!

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Cooper S Mk2
Cooper S Mk1
ex Cooper S Mk2, various Morris 1100s, 1300s, 1500s, Leyland Sherpa!

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mini maxx

Post subject:

Posted: Sun Jul 26, 2009 9:32 pm

SOOOO COOOOL

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