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Twin engine firing LH or RH

BELGA

New member
I have a sea ray 330 1996, Mercruiser 7.4 EFI direct drives, port side engine wound't start , seems to have firing problem, are the to engines RH or e LH or one and one, any one is familiar with this ? Thank You
Sorry, they are V drives
 
Ayuh,.... By 1996, Merc had done away with counter-rotatin' motors,.....

It's now done with the transmissions,.....
 
I have a sea ray 330 1996, Mercruiser 7.4 EFI direct drives, port side engine wound't start , seems to have firing problem, are the to engines RH or e LH or one and one, any one is familiar with this ? Thank You
Sorry, they are V drives

I think that Bill is correct, of which would mean that both engines are Std LH Rotation.

Rotation is determined as though viewing from the flywheel. In other words, a Std LH Roation engine's flywheel would rotate CCW when viewed from that end.

If viewed from the front, each engine's crankshaft would rotate CW.

 
Thank you, need to start alover , mecanik tought it was a RH motor and hooked up RH, now pump waterpump blocked
Find a different mechanic..... seriously!

plug wires go clockwise on the dist 1,8,4,3,6,5,7,2
The distributor will rotate CW regardless of engine rotation.
The above firing order is correct for a STD LH engine.
It will be reversed for a REV RH engine, still beginning with #1..... as in > 1 2 7 5 6 3 4 8 ..... and again, in the CW direction.



Re-Cap

Rotation is determined as though viewing from the flywheel.
In other words, a Std LH Rotation engine's flywheel would rotate CCW when viewed from that end.

If viewed from the front, the crankshaft would rotate CW.
 
Find a different mechanic..... seriously!


The distributor will rotate CW regardless of engine rotation.
The above firing order is correct for a STD LH engine.
It will be reversed for a REV RH engine, still beginning with #1..... as in > 1 2 7 5 6 3 4 8 ..... and again, in the CW direction.


So, but because its a 1996, it wil be a standerd one
 
Find a different mechanic..... seriously!


The distributor will rotate CW regardless of engine rotation.
The above firing order is correct for a STD LH engine.
It will be reversed for a REV RH engine, still beginning with #1..... as in > 1 2 7 5 6 3 4 8 ..... and again, in the CW direction.


So, but because its a 1996, it wil be a standerd one

At some point Mercs (with twins) went with Std LH Rotation engines (both Port and Starboard), and with what is referred to as an “opposite of engine rotation” transmission.

Which way do they spin with the starter motors????
 
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