Hole in outdrive

06Rinker270

Hello everyone, noticed this hole when prepping outdrive.  What should I use to fill and should I be worried about water intrusion?

thank you in advance.  

J3ff

pretty sure that's normal on some drives.. 

The Main Exchange

Is that the hole for the speedo?

aero3113

That’s the water intake for your speedometer, water pressure works the gauge on the dash.

zaverin1

Lmao!
yes that’s a speedo pickup hole
if you had a real hole it be leaking gear lube 

06Rinker270

I have never seen that before.  Then why do I have a pitot tube? 

aero3113

It’s possible your drive isn’t being used for the speedo and someone installed the pitot. When you get a chance look at your drive and compare to the pic below. This tube is at the top back of the lower unit. Pressure from the hole sends pressure up the tube to the gauge.

aero3113

If the tube is missing or just not connected, water will spray out the hole on top.

reneechris14

30psi should be 30mph. Shot it with a little air and the speedo will jump. I have to clean mine out every fall.

Ian

A twist of a drill bit 1/8 or less in your fingers tends to clear some build up too.

aero3113

What I think he is saying is he has a white pitot tube mounted to the transom that runs his speedo. Cleaning out the hole won’t do anything for him.

Dream_Inn

Either way, that is hole is definitely normal.  No need, nor should you, do anything to it.

zaverin1

Or the lower was replaced with newer model but he originally had a transom pickup
or the reverse situation 

06Rinker270

I will look today @aero3113!  Guessing if I trim up I can see that?  

Ha, I was freaking a bit when I saw it.  It must have been so clogged and painted over I never saw it as I sand and paint the drive every spring.  

Think I can get it reconnected?  Pitot tube does not work great either.  Just replaced it last spring as well.  

Thanks everyone!

06Rinker270

reneechris14 said:

30psi should be 30mph. Shot it with a little air and the speedo will jump. I have to clean mine out every fall.

How do you clean yours out?  Just clear the hole or the whole tube?

aero3113

Yes, with the drive up you will see that. Also along with the tube connector shown in the picture above, there is a male end that is installed on the drive side. Both pieces are available online if needed.

Glassguy54

Its supposed to be there. Mine was clogged and I had absolutely zero success trying to unclog, so my speedo never registered.

aero3113

@Glassguy54 , check out this quick video. Maybe it could help you out?

https://youtu.be/QEL4THMZlZA

Ian

As I suggested try a small drill bit, twist gently with your fingers. Have someone watch the speed and blow some air into it.

06Rinker270

thanks @aero3113 and @icoultha.  I need to investigate to where the pitot tube runs to.  Does it go straight to speedometer or connect with old tube that went to the drive.

reneechris14

I remove my drives every winter. But it can be cleaned out while on the boat. Raise the drive all the way up remove the tube by moving the tab to the right and wiggle up on the tube. I take a 10 inch piece of wire(actually from and old sending unit) slide it down the hole and spin with my fingers and same in the front hole then shot it with a little compressed air. The tube comes though the transom just above the yoke there is a quick disconnect there. From there is usually a strait shot to  the gauge. I assume this is where they tapped in to yours.

06Rinker270

VERY much appreciated.