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  What is traditional center-center distance for twins?

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Author Topic:   What is traditional center-center distance for twins?
SuburbanBoy posted 03-20-2002 01:25 PM ET (US)   Profile for SuburbanBoy   Send Email to SuburbanBoy  
What is the traditional center to center distance for twin outboards? Honda mentioned that some of the new high horsepower 4 cycle engines will not properly fit on a traditional twin engine transom. What is the opinion of those running twins? Is there a sacred distance?


Dick posted 03-20-2002 03:17 PM ET (US)     Profile for Dick  Send Email to Dick     
With hydraulic steering the Teleflex tech reference lists 26" minimum and 36" maximum for the old style tie bar and 26" minimum and no maximum for the new style tie bar. Those are engine center measurments.
reelescape1 posted 03-20-2002 06:32 PM ET (US)     Profile for reelescape1  Send Email to reelescape1     
My '90 22' OR has a sticker that says "This boat is equipped with hydraulic steering. Dual engines must be set up on 29 3/4" centers."
lhg posted 03-20-2002 07:04 PM ET (US)     Profile for lhg    
The 29 3/4" is also used on the 18, 20 & 25 Outrages, and is related to hull deadrise.

The most commonly used dimension, all boats, is 27", which is what I have used on my Armstrong bracket. The minimum 26" dimension makes it difficult to work on the engines when you have to get into the middle space, particularly with 90 degree "V" block engines. Whaler drive models use 28".

There actually is quite a bit of flexibility on this dimension, and long as you use correct engine mounting height. I wish I had used a narrower dimension on my 18 Outrage for my "skinny" in-line sixes.

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