Spec. for screw of bypass on carburetor Stromberg CD 175

[Jergus]

Hi,

first, my name is Jergus and i drive a TR6 1974 here in Berlin / Germany. I'm currently cleaning my carbs, manifold and so on... Unfortunately one of the screws which are holding the bypass on the carbs body is broken, i had to remove it with the extractor. I searched hard but i couldn't find the specification for the screw to order me some new ones. Unfortunately the german supplier companies do not offer these screws.

Can somebody help me please?

Best Regards

Jergus

[John L]

Does this help?   http://zenithcarb.co.uk/cd-bypass-valves/bypass-valve-18537.html

[jr2]

It is a special screw.

Screw: B18821 http://zenithcarb.co.uk/screw-22495.html

Washer: B19371 http://zenithcarb.co.uk/shakeproof-washer-17247.html

 

[John Morrison]

Jergus,

I looked this evening for this screw on some old carb. bits and peices, I have the valve and the screw, but it is not the one you photographed.

I removed three fine threaded bolts and washers, not the screw you show, which looks like a self tapping type.

Were all the screws you removed the same? I think it possible these are replacements thatmight have been forced home sometime previously.

I have sent you a PM, (Personal message) with my email address, (Click on the envelope in the top righthand corner) please reply and I will send you photographs of what I removed.

John.

[ed_h]

I have seen both the tapping screw that Jergus shows, and a machine screw in that location.

From a 74 TR6:

 

From a 69 GT6:

Edited March 19, 2021 by ed_h

[John Morrison]

Ah mine is clearly of the second type in your photo.

John.