Carb jet change

[UKPhilTR7]

Currently I have Waxstat Type jets on my SU’s, which I know have disks of wax in them and which I thought were the better type to have. Due to their age and the fact that I do not know if they are the original, I was thinking of replacing them for a new set of Waxstat Type jets. However, recently on ebay I have seen an add offering a “Triumph-TR7-etc-HS6-Carburettor-JET-CONVERSION-KIT” where is says “Get rid of those old waxstat's !”. I was always under the impression that the waxstat's were the later ones, but were prone to having the wax go.

Are the waxstat's type jets the older version and is it worth changing them to the main jet options? Also if you have waxstat's fitted can you change them to the main jets?

Also in the Rimmer catalogue it says

Main Jet - Rear - for Carbs AUD634

Main Jet - Rear Waxstat Type - for Carbs FZX1242

How can I find out what my carbs are?

[Hasbeen]

Change back to the good old fashioned ones Phil.

Those Waxstat things are yet another "pollution" control attempt that did nothing good, & everything bad.

Why these greenies want to starve out flora of the CO2 fertiliser it needs to help it supply our food I'm damned if I know.

Hasbeen

[UKPhilTR7]

Thanks for the reply Hasbeen. When I take them off to do the spindles, I will look at changing the jets too. I am all up for anything that will let my girl run a little bit better

[Stag76]

The 'WaxStat' is a small wax pellet that expands and contracts slightly (if at all) with heat changes, resulting in a
slight leaning of the mixture, bringing great joy to Greenies, and an end to Global Warming.
It is located in the bottom of the jet holder that extends below the carby.
I've never noticed any change in running that can be attributed to the WaxStat jets.

It can be removed by un-picking the metal tabs that locate it, and replaced by an AU $2 coin, which doesn't expand
and contract.

Alternatively, you can replace the waxstat type jet holder with a normal one (better).

[Beans]

... I will look at changing the jets too ...

Make sure you get the correct kit, including new linkage rods for the choke operation ...

[UKPhilTR7]

I have heard that you can change the disk of wax with a $2 coin. I think though for £70 all in I might just have the new kit.

Make sure you get the correct kit, including new linkage rods for the choke operation ...

I was hoping that there was just one kit for the HS6. Is there more?

[Beans]

For the last set of SU's I had rebuilt (by a friend) we used Southern Carburetters for the parts.
You'll need at least a service kit for twin SU's plus two link conversion kits (LH + RH)
https://sites.create-cdn.net/sitefiles/0/7/9/7960/HS_type_carburetter.pdf

[sonscar]

Change the jets,it is possible that they wear oval at the top due to the action of the sprung needles,Steve.

[UKPhilTR7]

Was just looking at your photo Beans and was wondering if you have a photo of the other end of the 's shaped metal that comes out the bottom of the jet. I am not sure where itit's goes.

[sonscar]

It replaces the existing bit that connects to the old jet and goes to the same place on the choke operating cam.Much adjustment was required to this when I fitted mine to ensure reliable operation of the choke/jet.Steve.

[dursleyman]

Not a very good picture but does this help?

[UKPhilTR7]

Thanks guys that is a help.