Props for 6 Bangers

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   I pulled the prop off my Mustang today and it's the smallest inboard prop I've ever seen.  It's a Federal 12x8 cupped.  It was originally a 12x10, but has been restamped.

Wondering what anyone else is running on their 6's?

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Riley Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: January-19-2004 Location: Portland, ME Status: Offline Points: 7948	Post Options Post Reply Quote Riley Report Post Thanks(0) Quote Reply Topic: Props for 6 Bangers Posted: May-10-2008 at 9:36pm
	I pulled the prop off my Mustang today and it's the smallest inboard prop I've ever seen. It's a Federal 12x8 cupped. It was originally a 12x10, but has been restamped. Wondering what anyone else is running on their 6's?

8122pbrainard Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040	Post Options Post Reply Quote 8122pbrainard Report Post Thanks(0) Quote Reply Posted: May-10-2008 at 10:04pm
	Bruce, You've got me beat on my Atom. It's a 11 X 12. I'd have to say that the cup was added and the pitch reduced on the original. Very common when everyone was finding out the benefits of cupping.
	54 Atom 77 Tique 64 X55 Dunphy Keep it original, Pete <

62 wood Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: February-19-2005 Location: NW IL Status: Offline Points: 4527	Post Options Post Reply Quote 62 wood Report Post Thanks(0) Quote Reply Posted: May-11-2008 at 1:42am
	Bruce, My 64 six banger had a 12-12 on it when I got her.. I tried a 12-13 I already had and liked it.. lost a little hole shot (like it really matters ). My wife could even tell "something had changed" at cruise speed.
	64 American Skier 62 Classic.. 73 Ski Nautique

greatrumpet Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: August-07-2007 Location: United States Status: Offline Points: 30	Post Options Post Reply Quote greatrumpet Report Post Thanks(0) Quote Reply Posted: May-11-2008 at 1:52am
	My gray 4-90, is turning a 11-11 prop, very nice hole shot with it

Riley Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: January-19-2004 Location: Portland, ME Status: Offline Points: 7948	Post Options Post Reply Quote Riley Report Post Thanks(0) Quote Reply Posted: May-11-2008 at 2:59pm
	Steve, if you've ever opened it up, what rpms do you get with each prop? I've read that engine will go 4400, which seems high to me.

Fasteddie Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: October-07-2007 Location: United States Status: Offline Points: 23	Post Options Post Reply Quote Fasteddie Report Post Thanks(0) Quote Reply Posted: May-26-2008 at 11:55am
	I've had my 63 American Skier out for the second time. Overall I'm very pleased with the performance of the 100 hp six. I was also wondering about the prop, the max rpm is about 3300. The top end straight line performance is good but it seems to bog down and slow in tight turns and at idle 600 rpm the boat still creates a wake. I looked at the prop for pitch and diameter but all I can find are a series of other numbers, 188L, 74467, 7811, 550 and 335. Just wondering if I should change props for better overall performance. Thanks

8122pbrainard Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040	Post Options Post Reply Quote 8122pbrainard Report Post Thanks(0) Quote Reply Posted: May-26-2008 at 5:37pm
	Ed, A prop shop will be able to match the prop against their pitch blocks to tell what it is. Are you sure it's the prop? The engine is ok? Tuned?
	54 Atom 77 Tique 64 X55 Dunphy Keep it original, Pete <

Fasteddie Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: October-07-2007 Location: United States Status: Offline Points: 23	Post Options Post Reply Quote Fasteddie Report Post Thanks(0) Quote Reply Posted: May-27-2008 at 12:00pm
	The engine runs great, I gave it a complete tune over the winter plugs, wires, cap rotor coil and carb rebuild. Thanks for the suggestion, I'll take the prop in and have it measured.

Props for 6 Bangers

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