[TR] 71 GT6 (TR-6, TR250 similar?) gulp valve (PCV system) - too much vacuum

[Randall]

I think you want what is commonly called the PCV (Positive Crankcase
Ventilation) valve.  A gulp valve is something else.

TRF sells a repair kit for the PCV valve that they say is suitable for GT6 2
& 3 for only about $15.  RFK1075

-- Randall 
56 TR3 TS13571L once and future daily driver
71 Stag LE1473 - awaiting engine rebuild
71-2-3 Stag - awaiting gearbox rebuild