Allison Jack Plate

[71V153]

Well, got the new toy mounted today. Thanks again Don! Find out how she performs tomorrow.

Anybody had experience with one on a 15 Baja? Total of 4 1/2" setback.

Raised the motor 1/2". Propshaft's now bout 5" below the keel. Good place to start?

How soon til I need LWP?

[Ted Stryker]

Its still pretty deep... Make sure you have a trustworthy h2o pressure gauge.. Incrementally bring the engine up until you begin to see erratic pressure readings (sucking air), then lower back down incrementally until the pick-ups are pulling in no air.. If you want that highest setting then you can plug the top one or two intake holes, or then go to a nosecone and keep going up..

It may start to slip when coming out of the hole, over revving a bit till the bow lays over and then it will hook-up and move on just fine

[frederick55]

You should be able to come up till the top of the lower unit barrel is even with the keel.

[71V153]

I dunno Fred. Not sure how much I wanna raise it before adding a low water pickup. If you lay a straight edge on the bottom I've already got the top two intake holes exposed?

[outasite]

Water rises as it exits the rear of the hull.Looks like you have a couple inches at least.

[71V153]

Water rises as it exits the rear of the hull.Looks like you have a couple inches at least.Went up another inch. We'll see what happens.

[Revolution141]

With the current gearcase/pickups you could easily run it 1 - 1 1/2" below plank (center of prop shaft to running plank).
Looks way, way deep at the moment!

[Mr. Demeanor]

Time to get a LWP on that thing and let her eat. I think a lot of your handling issues will clear up when you get it set up better.

[71V153]

Thanks guys. Ya I know it needs to come up. Bob's cone is on the list. Anyplace cheaper to get one than buying direct? They want a lil under $200.

[Mr. Demeanor]

I think I saw one sitting at Rich Junkers shop. Thinks its a TH Marine nosecone. Give him a call. He might make you a deal if you have him weld it.

[71V153]

'Preciate the heads up Chris. But think I'm gonna hold out for a Bob's.

In the mean time I went diggin through Ernie's junk pile and came up with this:

Figgered a pressure gauge'd be a good idea. Idles at 3 psi on muffs. Is that okay/accurate? Ain't stuck it in the water yet?

[Ted Stryker]

3lbs is plenty on the hose.. Don't rev it up hard on the muffs though..

[roadkill636]

In post #1 it looks like the bottom of the jackplate os sticking out from the transom a bit....???

If ya dont want to go with a lwp mite think of cilling in the top 2 holes and opening up the bottom ones and feathering the water into them..
My 2 cents

[71V153]

Thanks for confirming that Ted. Also been told I oughta get 10 - 12 psi at idle with it in the water. And 20 mebbe 25 at a slow cruise. Do you concur?

[71V153]

In post #1 it looks like the bottom of the jackplate os sticking out from the transom a bit....???

If ya dont want to go with a lwp mite think of cilling in the top 2 holes and opening up the bottom ones and feathering the water into them..
My 2 centsNot sure what you mean RK. It's flush against the transom?

Gonna go with lwp soon's possible. Just ain't got enough jingle right now ...

[roadkill636]

Its probly just the way the light hits it but i thought it looked as if the bottom of the jackplate is sticking out away from the transom here where i circled in black.

That thing sure sounds good in the vidio. Had one a while back and it was so dependable and reliable and ........ started good with a pull rope when i ran the radio too long and draind the battery dead.

[71V153]

Its probly just the way the light hits it but i thought it looked as if the bottom of the jackplate is sticking out away from the transom here where i circled in black.What you're seeing is a 1/4" alum plate between the transom & jack. Had it laying around and stuck it on to get a lil more setback.

Ya I love these motors. Yup I've pull started em before. Not for the faint of heart.

[71V153]

Okay got the gauge plumbed. Too tight through the wire bundle so I drilled a hole and ran it through a rubber grommet.

Assume teeing it into the base of the pee tube is acceptable?

[Quinten]

You gotta tee it in before the thermostats. The pee tube has virtually 0 pressure.

[71V153]

Got tired of sucking salt spray into the cowl from the stupidly placed vents in the pan so I roughed em up'n plugged em with JB weld.

Drilled a few holes under the handle of the cover to let a lil more air in?

[71V153]

You gotta tee it in before the thermostats. The pee tube has virtually 0 pressure.Hmm ... Whoops!

Thanks Q.