Odds & Ends Forum

Please Sign In or Register to Search

Assistance needed with Stromberg Carb.

Posted by rmouse 
rmouse Avatar
Roger Mousley
Salt Lake City, USA   usa
1969 Triumph GT6+ (MkII) "Litte Blue"

I recently acquired a 1969 GT6 that has a 2.5 liter motor and Stromberg 175CD carbs, the carbs have two adjustment knobs on the bottom, can anyone tell me what each knob adjusts and a base setting for my car?
Images added for clarification
Thanks in advance



Edited 1 time(s). Last edit at 2011-08-02 12:35 PM by rmouse.

Attachments:
Stromberg pics 001.jpg (31.4 KB) –
Stromberg pics 001.jpg

Stromberg pics 004.jpg (39.8 KB) –
Please Sign In or Register to view this photo
britsnspits Avatar
Michael Stoliker
Bethlehem, PA, USA   usa
1976 Triumph Spitfire 1500 "The Phoenix"
1978 Triumph Spitfire 1500 "Lucky"

Roger,

You may want to repost this in the Spitfire GT6 forum. This forum is for old Triumphs that don't fit in other categories.

As to the adjuster on the bottom of the Stromberg carb, there isn't any. The slotted brass thing underneath is part of the main jet assembly that pokes through the bottom of the float bowl. There may be an idle air corrector screw on the side of the carb body, but all mixture adjustment is done with a special tool down through the top damper.

Mike
William Hooper
1972 Triumph GT6 - Mobile, AL, USA   usa

Nice, those are the pre-CDSE Strombergs.

The adjusters on the bottom are for adjusting the mixture, via altering the position of the jet. Easier setup than the later emissions-compliant CDSE Strombergs, which adjusted with a tool inserted through the top of the dashpot.
. You can hide this ad & support the site by upgrading to a Gold Membership ~ click here for more info
Randall Y
Confusion, Los Angeles, USA   usa

The bottommost hex (with the screwdriver slot in it) is the jet adjustment. Turning it in leans the mixture across the entire range (but is normally adjusted at idle).

The upper hex locks the jet bushing in place and shouldn't be touched unless you want to re-center the jet to the needle.

Here's a couple of pages I scanned from the manual. Sorry there isn't more, my scanner decided to quit.

https://docs.google.com/file/d/0B2H2NJt34OffRVo1MlNKRm9sUlU/edit?usp=sharing



Randall
56 TR3 TS13571L daily driver
71 Stag LE1473L awaiting engine rebuild
7? Stag awaiting gearbox rebuild
. You can hide this ad & support the site by upgrading to a Gold Membership ~ click here for more info

To add your reply, or post your own questions

Members Sign In   or   Create an Account

Registration is FREE and takes less than a minute!

Having trouble posting or changing forum settings?
Check the Forum Help File (FAQ) or contact the webmaster.


Join The Club

Sign in to ask questions, share photos, and access all website features

TRExp Menu

What's New

Membership

Forums ->

The Pub

Buy, Sell & Trade

Vendor Market

Spitfire & GT6

TR6 & TR250

TR7 & TR8

TR4 & TR5

TR2 & TR3

Herald & Vitesse

Stag, 2500 & 2000

Triumph Pre-War

Odds & Ends

List Archives

Motorsports

Meetup

Forum Search

Random Topic

Latest Posts

Live Chat

Calendar

Journals

Tech Library

Car Registry

Cars For Sale

Model Info

Directory

Member Map

TRExp Store

Search Site

Advertising Info

Smartphone quick link
trexp.mobi

Adjust Text Size

Larger Smaller
Reset Save