Oh boy,..... Now I'm confused,.....
I read Ghg's post to say, he's going to a taller geared drive, with the smaller motor,....
Maybe I missed the boat here,.....
Ghg, What motor do you have,..??..??
Ghg, Which drive do you intend to run,..??..??
Ayuh,.... Then you'll need to drop some prop pitch,.....
Donno how much though, depends on which ratio the drive is,.....
What prop pitch were you running on the I-4, when it had the proper ratio,..??
Hopefully, you'll be able to find a prop small enough,.....
No,...... Pull the drain plugs, probe the holes with a pick to knock any crud outa the way, then when drained, put the drain plugs back in,....
Also, remove the bottom of the big hose, to drain any water hidden in the circulating water pump,....
Ayuh,...... Welcome Aboard,.... The housings should be the same,....
The gear ratios will be different though,.....
The I-4 should be 1,98:1,....
The I-6 could be 1.84:1, or 1.65:1,......
Ayuh,...... That's where you want to prop for,.......
650/ 700 rpms at idle, in gear, in the water,.......
To 4800 rpms Wot, in the water, trimmed out, haulin'n' azz,.....
Ayuh,...... What manual is that,..??
The 1.32:1 ratio was only offered for a short time, with the 351 Ford Windsor motors,....
The original 302s ran the 1.50:1 ratio,....
Ayuh,...... Have you cross-checked the tach against a known good shop tach,..?? yer numbers don't sound right,.....
That motor should be happiest at 4400/ 4800 rpms @ Wot,.....
And, yer not gonna find a 13" prop,..... 15" is as small as they go from an I/O,.....
Ayuh,...... Yer picture is abit lacking clarity, but I like the back of the hull at, or close to the back of the trailer, which best I can tell, would mean also shortening the bunks,....
Ayuh,....... Welcome Aboard,........ I'd sooner think, you have a leak in the carb float bowl, as gas can not flow uphill past the needle seat to get back to the tank,......
Rebuild yer carb, paying close attention to any welch plugs in the float bowl,.....
