Moss Motors, Ltd

I have a 74 TR6 with Stroms on it but have been told to throw them away as they are useless, what is the groups opinion of this?

 Also, with regards to going with TUBE suspension in the rear, any thought on this?

 

thanks

 

Ted

Just my opinion, but I don't think the Strombergs are "useless" but perhaps not as fine tuneable as the SUs. Both carbs use similar designs and are similar in function, but the SU has a longer travel for the needle control than the Stromberg and probably a bit better fuel mixture regulation across the rpm range. You should be able to get good performance with the Strombergs and unless you're racing where every last bit is of value I doubt if you'd notice much difference. Perhaps MotorBill will chime in, he has a lot more experience in these areas than I.

---

'73 Midget (V6)
'59 MGA (I6) under construction

"There is a fine line between a hobby and mental illness"

Chime!...

We've put on the SU conversion with TR6s and it's great. The car runs sweeter and is easier to tune. In general, I prefer SUs to Strombergs anyway, for the same reasons as BillY.

---

Motorbill
From Lola to Land Rover, If it's British and has wheels, it's likely I've bloodied me knuckles thereupon

I wish that I had SU's on my TR6, but I've spent a lot of time getting familiar with the ZS. There are a few things that make the ZS less desirable in my view. First, I would say that the inability to change the mixture while the engine is running is the thing I miss the most. Second, it seems to me that SU's handle heat better. I think that may be due to the location of the float chambers. Third and fourth, are the emission control additions of the temperature compensator and the Throttle Bypass Valves.

 I really don't have that much problem with the "mini choke" known as the temperature compensator as I have mine adjusted to stay open in all but the most fridged weather. But the Throttle Bypass Valve, at least on my engine, needs to be functional in order to prevent a certain amount of exhaust poping during engine over-run. I know that some people have disabled this feature, but I found that I needed it and if the diaphram that surrounds the actual valve gets less than flexible due to age or it is not properly adjusted you will probably get some effect on your idle speed.

 The SU's function just fine w/o  #'s 3 and 4.

 That's the way I see it and I've learned to live with the ZS thru maintenance but the reaction to ambient temperatures above 85F is something that I am still experimenting with. I added a heat shield which did improve starting a hot engine and recently I removed the radiator shroud and the carbon cannister, both of which were blocking air from the grill opening reaching the carbs and manifolds.

It's getting hot enough down here right now to see if things have improved. If it is not significant ....Skinner Union HS6 !