Intake for 312 interceptor (HELP)

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   Hey guys,

I need some help, Two questions.

1)I'm looking to convert my 312 intake from the two carter side draft carbs to regular 4-barrel intake and single carb. I'm not having much luck with the old carters and going to something i can actually work with and hopefully increase performance and relliability! Where can i find,and what do you suggest as far as intake and carb. combo for the 312 interceptor

2)Also I need to replace the drive shaft, Its bent, and also need to replace the prop. I'm using a 12RH15 needs replaced with an aftermarket maybe? Where is a good place to find drive shaft and what size prop should i use for this size boat and motor(63 classic 17 foot used mostly for skiing and tubing) Right now at 3500rpm's i'm running 35mph.I want to be able to pull more than one skiier at a time but dont want to give up speed, can i do this or am i asking to much?

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67nautique312 Members Profile Send Private Message Find Members Posts Add to Buddy List Gold Member Joined: June-23-2004 Location: United States Status: Offline Points: 883	Post Options Post Reply Quote 67nautique312 Report Post Thanks(0) Quote Reply Topic: Intake for 312 interceptor (HELP) Posted: February-16-2005 at 11:11am
	Hey guys, I need some help, Two questions. 1)I'm looking to convert my 312 intake from the two carter side draft carbs to regular 4-barrel intake and single carb. I'm not having much luck with the old carters and going to something i can actually work with and hopefully increase performance and relliability! Where can i find,and what do you suggest as far as intake and carb. combo for the 312 interceptor 2)Also I need to replace the drive shaft, Its bent, and also need to replace the prop. I'm using a 12RH15 needs replaced with an aftermarket maybe? Where is a good place to find drive shaft and what size prop should i use for this size boat and motor(63 classic 17 foot used mostly for skiing and tubing) Right now at 3500rpm's i'm running 35mph.I want to be able to pull more than one skiier at a time but dont want to give up speed, can i do this or am i asking to much?
	1963 Classic (handed down to my daughter) 67 Riviera 68 barracuda 1971 Ski Nautique Promo 86 Silver Nautique 1995 Ski Nautique

66polyhead Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: December-20-2003 Location: United States Status: Offline Points: 171	Post Options Post Reply Quote 66polyhead Report Post Thanks(0) Quote Reply Posted: February-16-2005 at 10:55pm
	Check this out! 312 intake Shafting and Props
	KY Wildcat

67nautique312 Members Profile Send Private Message Find Members Posts Add to Buddy List Gold Member Joined: June-23-2004 Location: United States Status: Offline Points: 883	Post Options Post Reply Quote 67nautique312 Report Post Thanks(0) Quote Reply Posted: February-17-2005 at 10:30am
	Thanks for the info 66!!!
	1963 Classic (handed down to my daughter) 67 Riviera 68 barracuda 1971 Ski Nautique Promo 86 Silver Nautique 1995 Ski Nautique

66polyhead Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: December-20-2003 Location: United States Status: Offline Points: 171	Post Options Post Reply Quote 66polyhead Report Post Thanks(0) Quote Reply Posted: February-17-2005 at 10:22pm
	The 12 X 15 is my favorite prop. I use three, 12 X 12, 12 X 13, and 12 X 15. With the 15 I top out at 52 mph. The poly won't take much over 5200 RPM. I acquired a new 14 X 17 austral prop, that was an experience. It took forever just to get to 35 MPH, but I probobly could of gone 70! I've noticed on mine the MPH's stay really close to the RPM's. Glenwood marine has some really cool nostalgic stuff, you can visit at glenwoodmarine.net. The K-500 Monel shafts are $7.00 per inch for 1" dia. and the stainless shafts start at $87.50 for the 48" X 1". Also there is a $25.00 machining charge on the Monel shafts.
	KY Wildcat

Intake for 312 interceptor (HELP)

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