zinks

[jmayton]

"Where are zinks
on Perkins 4..108?

[WanderingStar]

On my 4-107 there are none in the engine. There is one in the transmission and one in the exhaust raw water injection elbow. Check the heat exchanger.

[PorFin]

If you've got a Bowman heat exchanger/exhaust manifold combo (it's on the port side of the engine, as opposed to the front mounted heat exchanger on early models of the 4.108M) then there is no zinc. According to the Bowman folks, the nibral alloys used in the case/stack mean that a zinc is not needed.

There's a tempting looking hex headed suspect on the outboard aft end of the Bowman -- DON'T pull that unless you want to change the coolant in your closed circuit. Need I say how I found this out?