Drilling and tapping stage 2 jet

[sonic-jdm]

guys ive got a spare carb witch ive stripped down and would like to drill and tap the second stage for a AC jet to fit (for future use)

what is the thread type/size on the AC jet?? would just like to find out before i get my tap&die set. is the thread on the AC a unusal type? or a common one?

cheers Mark

[rs250nut]

Has your tap set not got a set of thread gauges with it?

[James5]

guys ive got a spare carb witch ive stripped down and would like to drill and tap the second stage for a AC jet to fit (for future use)

what is the thread type/size on the AC jet?? would just like to find out before i get my tap&die set. is the thread on the AC a unusal type? or a common one?

cheers Mark

Hi Mark,

I have done this previously on a few carbs with good results and some where it just hasn't sealed enough,

Of the top of my head I am thinking its either M4 x .7 or M5 x .7 spring to mind the drill bits needs to be .5 smaller than the tap.(cheers for the reminder russ)
Failing that take an a/c jet down to a good tool supply and see if they can match the thread.


Couple of pics attached

[Arrows]

Can i ask what benefit this would give.

[James5]

Can i ask what benefit this would give.

The only real benefit is if you have a carb which has had the 2nd stage drilled out to large there is no way of going back (standard 2nd stage jet is fixed / non removable), basically the carb body is scrap if you drill and tap the 2nd stage this brings the carb body back to being usable and gives you more of a option to change the jet sizes when tuning.

[sonic-jdm]

Cheers james that was fast only just sent you the PM

[Russ B]

Its M4 x 0.7, thats what I used when I made a set of spare jets.

[Russ B]

James, nice edit from 1.5 to 0.7, after you read my post?

I've just uploaded a drawing of the Main & Air Corrector / Enrichment Jet in case anyone wants to make some or get some made.

https://www.rtoc.org/files/Technical%...20Jet/jets.pdf

Ooh forgot to add , drill size for M4 is 3.3

[sonic-jdm]

Cheers Russ B and for the drawings

ill get a few of these made up from my old work

[Arrows]

The only real benefit is if you have a carb which has had the 2nd stage drilled out to large there is no way of going back (standard 2nd stage jet is fixed / non removable), basically the carb body is scrap if you drill and tap the 2nd stage this brings the carb body back to being usable and gives you more of a option to change the jet sizes when tuning.

So what benefit does adjusting the 2nd stage add?

[James5]

So what benefit does adjusting the 2nd stage add?

Check out the articles section there is a good diy guide on the solex 32dis and also a description as to what jet does what.

If you need a hand let me know tour profile says you are west Sussex based? Wherabouts are you matey I am in Horsham

[James5]

James, nice edit from 1.5 to 0.7, after you read my post?

I like to think so cheers fir the reminder though

[sonic-jdm]

All Done
was abit fidly as had to drill slight bigger hole on top to allow clearance for the top part or the AC to fit right in

cheers for your help guys

[James5]

All Done
was abit fidly as had to drill slight bigger hole on top to allow clearance for the top part or the AC to fit right in

cheers for your help guys

Yeah had to the same on all mine aswell matey as you say the top part of the ac is non threaded

[Arrows]

Check out the articles section there is a good diy guide on the solex 32dis and also a description as to what jet does what.

If you need a hand let me know tour profile says you are west Sussex based? Wherabouts are you matey I am in Horsham

I am near worthing not far from you in fact.

[James5]

I am near worthing not far from you in fact.

If you ever need a hand with the 5 drop me a pm matey always willing to help

[Arrows]

If you ever need a hand with the 5 drop me a pm matey always willing to help

You may regret that

[Mart]

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