Im a newby to the gas model boat scene so forgive me if this is a bit of a stupid question:blush: .I bought a walbro water pump (w-10) and I know that the vac feed has to be taken off either the cranckcase or the inlet manifold, however the brass nipple supplied with the pump has an inner diameter of 3/16, a thread lenght of 6/16 and a tread diameter of 6/16. The hose itself has an inner diameter of 2/8. The cranckcase of my engine cant be more than 1/8 thick and wont a hose of that diameter rob a awful lot of vacum from the engine? Any ideas?:?

Brandon.

Use standard 10-32 brass fittings and 1/8" I.D. tubing for plumbing the pump. The pump isn't specifically designed for RC boats, so it comes with different hardware if you don't get it from RC suppliers. Check with Warehouse Hobbies for all the plumbing parts you will need. www.whobbies.com