Venturi

The Just Engines’ J’EN Venturi.

Sized similarly to the chart used by P.A.M.P.A.

Hundreds of users Worldwide.

Seen here on a ASP S15.

Notes:
Based on the old O.S. Needle Valve assembly, it can be adjusted and wound in or out of the Venturi body – which changes the effective venturi area and therefore allows your setup to be ‘tuned’ without further drilling or filing!

‘Dork’ tube – a piece of silicon tube, can be added very easily to top of Venturi, which helps stop dirt getting into the venturi (and engine) in the event of a crash (note indent machined in body to accept the tie wrap).

Standard size options:

Engine	a	b	c	d	e
ASP .12 – .15 and .21	4.5	14	9	15	8
ASP S15	4.5	14	10	15	9
ASP .28	4.5	14	12	15	9
Leo .25 – .46 ASPS25	5	16	13	20	10
JEN .37 – .47	5	16	13	20	9
Irvine .39	5	16	15	20	9
ASP and Irvine .40 – .53	5	16	13.5	20	9
Irvine .40 – .46 III	5	16	16	20	9
Irvine .53 MK1	6	16	16	20	9
ASP .60 – .91	6	16	15	20	10
JEN .57	6	16	13	20	9
.60 – .75, JEN .91	6	16	15	20	9