A quick carb question........

[Bobbieslandy]

Hi,

How would i know if i had waxstats? i believe they're on the bottom of the carbs but i'm not really sure what i'm looking for. If i have got them would it pay to modify the carbs to non waxstats?

Thanks!

Rob.

[FI Spyder]

Only if they aren't working. I believe there was some info on how to do it with a penny on the Spitfire Magazine website although it may have been else were.


TR7 Spider - 1978 Spitfire - 1976 Spitfire - 1988 Tercel 4X4 - Kali on Integra - 1991 Integra - Yellow TCT

[Wayne S]

Waxstat jets are big silver things that self adjust the mixture as the engine warms up. Unfortunately these are made of a coil of thermolastic (?) wire and eventually stop working messing up your mix all the time.

These are standard fitment to TR7s so its likely you will have them. I would reccomend converting them to the earlier red coloured TR4 style fixed jet for reliability. Also remove the sticking poppet valves in the throttle butterfiles and replace with solid butterflies , again from the TR4. Andy Turner sells the kit cheaply at http://www.su-carbs.co.uk/

Here's a picture:

<b>Fixed jets on the left. Waxstat on the right.</b>




<b>Also here you can see the poppet valve in the butterfly on the left and the conversion to solid butterfly on the right:</b>



<b>Red 4.0 Litre V8 DHC Grinnall (with huuuuuge arches...!)</b>

[Bobbieslandy]

Superb, thanks for that. It's one of the many things to do before spring.

Rob.