Diesel Conversion 23cc

[Highway12]

Yes, it's a velvet drive 5000 8 degree down angle 1 1/2 : 1 . I talked to Mack Boring in NJ and they sent me the torque converter and bell housing I needed. Watermen around here swear by them on their crab boats. My guess is it will need a 17 x 19 wheel.

It's taking forever to clean up the bilge. The glasswork in those old boats is a little rough to say the least, and I'm glad to get rid of all that waterlogged foam!

I'm cutting down the motor mount stringers and eliminating the boxed out section next to them, so I can add aluminum angle with backing plates bolted through the stringer for the motor mounts. The stringers were wet, but in good shape. No rotten wood.

Once I test fit the motor, I'll take it back apart and glass everything back up.

[ct9amr]

I have had both velvet drive and ZF trans.
Both great and hold up great.

If you are redoing the bilge try the bilge coat product. Worked great on my shamrock inboard.

[Highway12]

Mac Boring sells a 6' exhaust extension for the motor. The extension plus a rubber exhaust flap on the transom and you will be fine.

My boat has a 22 - 27 kt cruise and will plane out at 11 kts.

My only complaint is low speed vibration from the small diesel. I'm going to try different motor mounts to see if it helps.

[kmoose]

Sounds like a great swap but I bet you will miss the trimable drive.

[Wags23]

Mercury now has this engine and they changed the riser. I just installed it with a back pressure relief. I just ran it in my driveway..Going to drop it in Sunday.

[Wags23]

Hey Harper how did you make out with the inboard purchase?

[Keezdisease]

just bought a 23 seacraft inboard with a 350 small block can you guys tell me the performance numbers for this rig

[heynow2203]

Originally Posted by Keezdisease

just bought a 23 seacraft inboard with a 350 small block can you guys tell me the performance numbers for this rig

What's the hp rating?

[deepsushi]

as a general rule -- the gas inboards cruise 20 - 22 knots and diesel 27 -- 28 knots.