water pickups
#21
Platinum Member
![](https://www.offshoreonly.com/forums/images/icons/platinum_member_star.gif)
![Default](/forums/images/icons/icon1.gif)
You would still have to close them holes from your existing pick-up's, otherwise there is really no point in putting the through hulls or the transome pic-ups on there.
What are you running for power ?
Cougarman
What are you running for power ?
Cougarman
#22
Registered
Thread Starter
Join Date: Feb 2004
Location: babylon
Posts: 24
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
572 ci. nateral aspirated. with all the goodies, dart iron eagles,je forged pistons,oliver rods, callies crank. except i have litle baby camshafts wich will be changed to a hydrolic roller that matches the aplication..
#24
Registered
Thread Starter
Join Date: Feb 2004
Location: babylon
Posts: 24
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
i have Konrad 540's. il be istalling gps so dont know acurate speed yet. should run 74 with my 610 hp moters. after i change my cams, rods and springs i should be close to 710 hp each.
#26
Gold Member
![](https://www.offshoreonly.com/forums/images/icons/gold_member_star.gif)
![Default](/forums/images/icons/icon1.gif)
The best route...would be to pull the motors for access to the center stringer at the transom, which is where you need install the new transom mounted water pick-up(s). They are available as a double or two singles. A ball valve installed first, as they come through the transom, then your first piece of double clamped 1 1/4" wire-wound hose. This hose can go directly to your engines water pump, if your water pick-ups are screened. If not, they need to go to sea-strainers first. The ball valves need to be able to be opened & closed, so you need to fabricate a stainless rod push/pull to accomplish this. The forward thru-hull locations were easy & inexpensive to install when the boat was new from the factory & are neanderthal by todays standards. They aireate the slipstream to the props, create drag, and can be damaged by hitting debris or marina cradles, trailers or straps. Have a qualified structural glass person, using absolutely no fillers of any kind, take care of your old thru-hull holes.
#27
Registered
![Default](/forums/images/icons/icon1.gif)
A friend of mine has a 377 scarab. 1981 I think. He went from a pair of 550HP 496CI running about 66, to 650HP 540's, and only gained about 3 more MPH to about 68-69. He removed the stock clamshell pickups on the bottom, and installed the transom mounted ones, and had the bottom blueprinted. Now the boat run 75 ish, and handles/rides nicer he says.