Correct Size Weber Jets For Euro Rallye

[Dar_Reynolds 1 2 Cars]

Can anyone tell me what size jets I should have in my Twin 40's on a Euro Rallye? Standard 1.3 set up

 

I think the ones in mine are too large :/

 

Thanks

 

Darren

[Wallby 39]

There are a few different jet sizes that came in different years, the ones I know of are;

 

Idle 58F9 or 62F21 (Im running 65F8 which works well)

Main jet 138 or 145

F68 Emulsion tube

190 Air corrector

 

What does yours have in now?

[Dar_Reynolds 1 2 Cars]

​Sorry for the delay in replying and thanks for the info

​

​I've got 60f21 Idle 142 Mains 190 Air

​

​I've discovered that 2 'O' rings had perished on the idle jets, replaced these and it was better but still not great under 3500rpm

I have now also found that one of the accelerator pump jets isn't working, hoping to get it all back together on Friday when I'm also hoping (fingers crossed) to at last have it UK registered

[Dar_Reynolds 1 2 Cars]

One more thing :/

The Hungarian guy I bought the car from, told me it isn't set up to run unleaded, I'm wondering if he thought this as it was running so badly (therefor using lead replacement

additive).

Any thoughts on if I need to carry on with the additive?

[aldworth33 45 1 Cars]

Just get the timing set up properly to run unleaded 95ron, my old man's 205 had to get the ignition timing adjusted back in the day to run unleaded when lrp was being phased out

[Wallby 39]

Make sure the pump jets are adjusted the same on the long screw underneath, otherwise you'll get them spraying at different times.

[205Rallee 59]

Having had my TU24 from the times of leaded petrol until now, I've always run on leaded and now Super Unleaded, the very few times I've run it on normal unleaded have been emergencies when I couldn't get super and it runs like a pig. It only runs well on Shell V Power or Tesco Momentum.

 

Best bet is to get it to a rolling road.