Just fit it higher up and tighten down the set screw. However, it can be pushed in and installed higher up in the piston.
#STROMBERG 175 CD 2 MANUAL INSTALL#
The rebuild instructions tell you to install the needle so the shoulder is even with the piston.
#STROMBERG 175 CD 2 MANUAL SERIES#
The needle valve in a Series 2 is fixed and not adjustable. It seemed like the engine was just not getting enough fuel at low idle speeds and there is no adjustment for this. Lately, after my engine rebuild, I was tired of pulling out the choke all the time at stop signs. Warming Up: Same thing, if it's not well up to temperature, pull out the choke!
I pull up to a stop sign and I need to pull the choke out a little to keep it idling well. I have also had more problems at colder temperatures and when the car is just warming up.Ĭolder temperatures: A cool spring or fall day, I can drive for 30 miles on the highway and my water temperature will be on the low side of the temp gauge.
Removing the butterfly valves sends the fuel mixture straight thru the manifold and into the engine helping to eliminate the flat spot hesitation it had. These valves send the fuel mixture around the heated manifold during “lower idle speeds” heating up the fuel mixture for better exhaust emissions. Years ago I removed the inner rear butterfly valves inside the intake manifold. And it’s pretty simple, there isn't much you can do wrong. Get a couple rebuild kits and do a Google search or YouTube and have at it. It’s not that difficult but its too much to put in a one-page newsletter. I’ve had my E-type 39 years now so I have rebuilt them a few times. The first thing to do, if you haven't already, is rebuild your old Carbs. (I also had an Automatic Transmission so that made it even worse) My biggest complaint about my Series 2 E-type was the lack of pickup at a dead start, the hesitation the Strombergs had. Then along came the Series 3, with twice as many carbs and cylinders!
The Series 2 E-type was never going to out run or out perform the Series 1 E-type. To start with, you have realize that the Series 2 E-type had pollution controls on the carb the earlier versions did not have to contend with. Stromberg Carburetors, some people have no problem with them, some people just plain hate them. If going this route I'd plan on excavating the leak balancing screws to correct matters as needed. Swapping out the pistons will likely alter the behavior at idle, typically producing an incurable miss and/or wobbly drop to idle.
via a screw which is buried under a plug of epoxy. As to different needle sizes, I've never had a problem with interchange among various TR6 models, so long as the engine hadn't been modified.īe careful with that - the pistons are in fact matched to the bodies in that the " leak " is adjusted at the time of mfr. Given how common ZS's were, its very easy to get the parts, as even in the states the vast majority of ZS's were adjustable. Unlike SU's, the piston/diaghram is not matched to the dome so interchangeable among different carbs isn't a problem. If you do happen to have a set of the original non-adjustable carbs on your 250, its easy enough to swap in a piston and needle from a later set of Strombergs with adjustable needle. Very interesting, I plan to check if they are over rich with a colourtune and go from there, awaiting new choke cable and a couple of vacuum pipe fittings. carbs or different needles to the Strombergs. Due to the fixed taper of those needles the tuneability is limited, so some have fitted S.U. Later ones were adjustable via raising or lowering the needles. In the day, 100K miles was something to crow about and TR250s often went well beyond that before needing engine overhauls ( as did plenty of Federal TR6s - 250K or more ).Īll the emissions Strombergs were set up for their respective engines and would work perfectly when new. What they do well is keep the mixture right on a correct original engine, allowing them to pile on miles and miles. Consequently they won't serve with different cams having longer duration. Original TR250 carburetors are not adjustable per se you could increase richness by raising the float levels or by stretching the springs but that's about it.
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