I'm building Van's RV-9 and the kit provided manifold pressure line from the c/p side of the fire wall to the sending unit is a clear plastic tube about 1/16" ID. The inlet of the Dynon sending unit is about 3/32" ID. Can I place an adapter at the Dyon unit and make the transition from 1/16" to 3/32" there or do I need to have a continuous diameter from the engine port all the way to the sending unit?
EMS Manifold Pressure Mod.
- Thread starter fbush
- Start date
mmarien
Murray M.
I don't think the size much matters - so I'm told.
Some of the posts here talk about putting in a pin hole to steady the fluctuations. I used 1/4" outside diameter copper tubing to get past the engine and 1/4" inside diameter plastic from there without any problems. The copper pipe comes right off the intake manifold (1.25"). It's measuring the pressure not the flow so I'm thinking it shouldn't matter what size pipe is used.
Some of the posts here talk about putting in a pin hole to steady the fluctuations. I used 1/4" outside diameter copper tubing to get past the engine and 1/4" inside diameter plastic from there without any problems. The copper pipe comes right off the intake manifold (1.25"). It's measuring the pressure not the flow so I'm thinking it shouldn't matter what size pipe is used.
- Joined
- Mar 23, 2005
- Messages
- 13,226
Continuous diameter isn't primarily important, and as mmarien says, some folks find they need to artificially restrict the MAP line to damp fluctuations in the actual manifold pressure that the EMS can't smooth itself.