cutting in a jet tunnel

[red450r]

Im in the process of doing my own tunnel in my 1652 g3, could someone give me a little insight on the measurements?
ive got the print from outboard jets but what it calls for lands right in the middle of two of the ribs. also i have noticed that the g3 factory tunnels are square versus the outboard jet print that calls for a 45 degree on the sides. Thanks, Ethan

 

[Ranchero50]

I would try an do the 45's as it'll help the jet draw clean water in hard turns.

 

[red450r]

Ok, I was thinking that because they are the only ones I've ever seen squared off

 

[smackdaddy53]

I built mine off Alwelds tunnel.
Others

Alwelds

Mine

 

[red450r]

How deep is yours smack?

 

[red450r]

Buddy of mine had a g3 that he paid someone to do its 3in

 

[smackdaddy53]

How deep is yours smack?

2 3/4"

 

[red450r]

Do y'all think that 14" funneling into 11" with a length of 18" will be enough?

 

[JL8Jeff]

I have the Lowe 1652 tunnel and it seems to work really well in the turns. I'm not sure of the dimensions but I can measure when I get home if you want.

 

[red450r]

Yeah I'd really appreciate yhat

 

[red450r]

I finished up about 10 last night.

 

[smackdaddy53]

Looks good man! How long is the whole tunnel?

 

[JL8Jeff]

I took some quick measurements last night before putting the boat in for the season. The tunnel is 12" wide on the top side and 15" wide on the bottom. It's only 2" tall at the tallest point in the back. I can't find the length measurement, I thought I wrote it down.

 

[red450r]

The whole thing is 24. 18" into the boat is what outboard jets calls for. I'm putting everything back together tonight. I'm building a center console so it'll be a week or so before I get to try it out

 

[red450r]

The whole thing is 24. 18" into the boat is what outboard jets calls for. I'm putting everything back together tonight. I'm building a center console so it'll be a week or so before I get to try it out

 

[smackdaddy53]

Looks great bud

 

[red450r]

How high do I need to set the motor? As far up on the tunnel as I can?

 

[smackdaddy53]

How high do I need to set the motor? As far up on the tunnel as I can?

The same as you would with a non tunnel hull. Leading edge of foot a little above the lip of the tunnel with the motor tucked all the way in but you will have to play with it to get it set right. Jusf what I picked up along the way.

 

[red450r]

The tunnel sticks out over top of the foot. I've got it as far up as I can I'll try it and see how it does

 

[RiverBottomOutdoors]

This is what mine looks like with the motor trimmed all the way down.