I have two Hardin Marine swirl away sea strainers I used on my natural asperated engines. I'm adding whipple chargers and wondering if I need to add an additional strainer for the whipple intercoolers?

Most likely the strainers will be a good enough water supply but you might want to consider 2 stage sea pumps. I'm not sure how much water the intercoolers need but I wouldn't want to take any water away from cooling the engines. Just my 2cts.

I agree with the 2 stage pump idea .

2 stage pumps BIG Daddy and some of these ...

http://www.cpperformance.com/p-14570...ote-mount.aspx

When by boat was rigged it has strainers for engines and another strainer for the intercoolers. The boat has water pickups on the bottom of the boat.

I would stick with the single stage pump unless you have a larger pickup. If you are using a bravo drive to supply the engine, then a 2 stage pump isn't really going to help.
I use a transom mounted pick up and force feed the intercooler. You should run a seperate intercooler strainer. I really like the sand strainers from Hardin.

This one.
http://www.cpperformance.com/p-14571...ead-mount.aspx

Eddie

I'm with Eddie. Why take away any water from cooling the motor??? When you add a blower, you increase cylinder temps and need all the cooling you can get, the cooler the better. Add an offshore pickup and run a separate strainer.

Eddie, what size are the fittings on that Hardin unit? It looks slick.

Thanks.

It is a very nice piece. It has one 1" npt inlet and (2) 3/4" NPT oulets. It also has an 1/8" port for a pressure gauge.
Eddie