More emissions help needed for a '71 Stag. Especially crank case venting

[sujitroy]

I'm trying to figure out my emissions system for my LE2305 LBW '71 Stag.


I have one carbon canister with three top ports. (I'm coming to the conclusion that this was stock - others's have two canisters with 2 ports)

1 port goes to fuel tank,
1 port goes to crank case ventilation and to carb breathers
1 port goes to carb float vent valves


For the port that goes to the crank case vent. do you have a restrictor in the path?

I see a similar set up for TR6s , there is a restrictor in pipe to the crank case.

For UK Stags, does the crank case vent into the carbs only?



Sujit


LE2305 LBW

[STypeR]

Hi Sujit, I forgot to mention to you last time that the PC does list some more detail on the various Evaporative Loss Control Systems and how they are connected to the fuel tank on pages 5-13, 5-14 and 5-15 of which you may already know. I doesn't list the smaller early style canister with the 3 top ports, which sounds like what you have, which doesn't mean it didn't exist ..
Page 02-45 lists the early 'European' breather set up with just the crankcase ventilation only and page 02-46 lists the later European set up which has the addition that lets the carbs breath to the fuel tank as well. Neither had the canister. I assume 'European' must cover the 'home' UK market as well and probably no European market got the canister. No restrictor shows here either.
So the restrictor listed for the emission carb Stag for both canisters is in the line that vents to the fuel tank. There were various fuel tanks as well all designed for the various carbs and the emission systems.
You have the canister so you would have some emission equipment in the boot and vents on the fuel tank as well. Unless you want to block it all up..
PM me if you need more info. John

[sujitroy]

John,
Im getting close but will have some more questions.
Sujit

[elvimto]

Sujit my car is 1971 mk 1 hope you can see in this picture the canister has two the big one goes from the canister to a four way fitting one to the valve cover then two to the carbs. Of hand can't remember where the other goes but I think back to the tank in the boot the triangular one tucked up in the corner.
Stuart