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Lotus and Strombergs

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Phil73

Phil73

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Posted this over on the Lotus forum but it doesn't seem very active...

I have a 1973 TR6 and I'm looking for replacement parts for the carbs on my car. All TR6s came with Stromberg CD 175 carbs and the vast majority (including mine) had adjustable metering needles. My understanding is that the earlier CD 175s had non-adjustable metering needles.

I found someone selling a pair of CD 175 carbs "off of a 70's Lotus" but that's about all he/she knows. I need the carbs I purchase to have have adjustable metering needles like the carbs that I have today because one of the parts I need is the metering needle adjuster as well as the air valve it fits into.

Anyone know if I'm safe to buy CD 175 carbs "off of a 70's Lotus" or is there a chance they will be the old-style non-adjustable carbs?
 
Answered on Lotus forum. Have faith! It's not very active 'cos there's not many Lotus, but those of us so blessed keep a weather eye out for posts.
 
How about a little update on what you found and whether or not it was correctable on your 73 carbs, Phil ?.. At least over at the other place.
 
PB, I gave a detailed explanation of what I found and would love to have your feedback. In short, I found that the barrel in the air valve is somehow not symmetrical...seems impossible but, there it is.
 
Easiest way to tell is if the top of the piston has 2 slots in it. They are for the adjusting tool. Non adjustable needles don't need them...
 
Good point! Hadn't thought of that. I'll have the guy take the damper out and look to see if the 2 slots are there.
 
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