Solex carby threads

[Defender Mike]

Here is a curly one for the serious series one master! Who knows what type of thread is used in the solex carby's bolts. No guessing its not whitworth, metric or any known gas type thread. I don't know and neither does my mate Graeme who has rebuilt several Series 1s and carbys. We think it may be some type of French gas thread. We cant get a tap or die to suit although some are very close. Anyone who can answer this correctly is entitled to a free beer from me next time I am in your town. LOL

[JDNSW]

I don't know, but I would guess probably BA.

John

[back_in]

a little idea that works
if the thread is stripped on any of the 4 bolts holding the pump block on
very carefully drill 2 or so m.m. into the counter sunk in the out side block.
you will pick up the thread it is tapped well passed the bolt thread lenght
the thread I beleive is BA
cheers
Ian

[Defender Mike]

Well I ran the ba theory past my mate and its close but definitely not ba he has ba taps & dies and they bind up and take off metal. Its a mystery and we would love to get the correct tap and die set. The free beer is still open !
Mike

[Dinty]

I also thought the screws were 3BA, I miked them this morning and they are way under the given size for 3BA, cheers Dennis

[wrinklearthur]

I have put this diagram up before from another site, but does show all the parts.

Are the screws you require, shown as three of item number 1?
I have matched these screws from some of my old radio junk.



Parts supplied may not always conform exactly to illustration
Enquiry Form

Illus Description
No

1 Float chamber cover screw x3
2 Washer x3
3 Choke tube
4 Correction jet
5 Emulsion tube
6 Pilot air bleed
7 Air jet
8 Fibre washer
9 Petrol jet
10 Starter assembly (10-15,17-20)
11 Starter body
12 Starter lever
13 Starter cable locking screw
14 Distance washer
15 Nut
16 Starter fixing screw
17 Starter cable casing locking screw 61 Spindle fibre washer
18 Starter valve locating ball 62 Spindle
19 Retaining plug 63 Mechanical pump return spring
20 Spring 64 Mechanical pump body
21 Choke tube fixing screw 65 Depression pump return spring
22 Pilot jet 66 Depression pump assembly
23 Pump jet 67 Membrane spindle nut
24 Pump non-return valve gauze 68 Membrane spindle
25 Pump non-return valve 69 Depression economy valve
26 Throttle chamber gasket 70 Depression pump body
27 Throttle 71 Gasket
28 Throttle stop screw 72 Economy jet
29 Throttle stop screw lock nut 73 Floatchamber
30 Throttle spindle tab washer 74 Pump injector assembly gasket
31 Throttle lever 75 Pump injector assembly
32 Throttle abutment plate 76 Pump injector assembly screw
33 Spring for 34 77 Float
34 Slow running adjustment screw 78 Float toggle spindle
35 Throttle disc screw x2 79 Float toggle
36 Throttle spindle 80 Needle valve
37 Flange gasket 81 Needle valve washer
38 Throttle body fixing screw washer x4 82 Floatchamber cover gasket
39 Throttle body 83 Floatchamber cover
40 Pump control rod washer 84 Banjo union washer
41 Split pin 85 Banjo union
42 Pump control rod 86 Filter gauze
43 Ignition union olive 87 Banjo bolt washer
44 Volume control screw 88 Banjo bolt
45 Ignition union
46 Pump control rod spring
47 Pump control rod spherical washer
48 Pump intermediate lever
49 Main jet holder washer
50 Main jet
51 Main jet holder
52 Pump fixing screw
53 Pump assembly (54-70)
54 Screw
55 Cover
56 Membrane assembly (57-62)
57 spindle nut
58 Support plate (outer)
59 Support plate
60 Pump membrane
61 Spindle fibre washer
62 Spindle
63 Mechanical pump return spring
64 Mechanical pump body
65 Depression pump return spring
66 Depression pump assembly
67 Membrane spindle nut
68 Membrane spindle
69 Depression economy valve
70 Depression pump body
71 Gasket
72 Economy jet
73 Floatchamber
74 Pump injector assembly gasket
75 Pump injector assembly
76 Pump injector assembly screw
77 Float
78 Float toggle spindle
79 Float toggle
80 Needle valve
81 Needle valve washer
82 Float chamber cover gasket
83 Float chamber cover
84 Banjo union washer
85 Banjo union
86 Filter gauze
87 Banjo bolt washer
88 Banjo bolt

Most parts are available separately. Repair kits, service kits and gasket packs are also available, please state carburettor reference number (stamped on floatchamber cover) or make and model of car, any questions please contact us at.

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e-mail :sales@gowerandlee.co.uk

Tel/Fax +44 (0)1923 247300
.

[wrinklearthur]

Ref; FOR PORSCHE: 61610093400, 616 100 934 00 - READY TO SHIP - (SCREW FOR SOLEX 32 PBI)


SCREW FOR SOLEX 32 PBI
R61610093400 - Replacement/Accessory



.
Price: $1.64
Description
Number 82 in drawing.


Fits (Click to view section):
356 1950-59
356 1960-64


Notes:
356 1950-64 with Solex 32 Carburetors

Exploded Diagrams (Click to view additional fitment info)
356 1950-59 - Engine
356 1950-59 - Engine
356 1960-65 - Engine
911 1965-69 - Engine
911 1965-69 - Engine
912 1965-69 - Engine
912 1965-69 - Engine

[wrinklearthur]

http://oacdp.org/pdfs/solex.pdf
.

[101 Ron]

I think you will find threads are UNF..........but in smaller sizes they are expressed as 10-28 ......10- 24 .......8-24 or similar.
I do know if you find a LPG repairer they will have spare new screws left over from American Impco and century brand gas convertor overhaul kits and those screws tend to fit the top of many carbies.
I do mobile plant repairs on site and tend to find my carby screws etc from old gas convertors sitting around the workshop.
Taps can be purchased for the smaller UNF/UNC system threads

[B.S.F.]

The ones on my Solex 32PBI S1, and 40PAIO S2 are off the shelf M6x1 (6mm/1mm pitch). .W.