The only engines I've used for stunt have been the Merco 35, Enya 45 model 6001, ST G51 stunt, OS 40 and 46VF's, Irvine 40RLS, Stalker 61 and Enya 61 CXLRS. All have been run on zero nitro, generally give one flick starts and I find needling is quite easy. YMMV but I'd bet the 46LA will work just as well on zero nitro.