Alpha 1 shift plate for 3 liter (140)

Fishermark

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Oct 19, 2003
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5,617
My project boat I am currently working on: 1985 Wellcraft with a 140 Mercruiser and Alpha 1.

I decided to replace the manifold as the old one was "iffy" at best. The one on the engine was an aftermarket - made by Aqua Power. I decided to go with Quicksilver as it was not much more expensive. (By the way - I strongly recommend this for anyone looking to do the same. I am not always a big fan of sticking with OEM... but in this case it was WELL worth it. In addition to the manifold, it came will all the studs, bolts, nuts, etc. The good graphite gaskets. Plus, it came with a new stainless steel fuel line from the pump to the carb. I didn't expect that!).

Here's my problem. I went to install the shift plate and notice I cannot install it the way it had been installed. On the "old" setup, it was simply installed on the manifold using the studs / bolts holding on the manifold. On the new manifold there are some extra bosses in the way. The holes on the plate do not seem to match up in any way to the bosses and the bosses are in the way to use the manifold bolts.

Did I get the wrong manifold? Is there another way / place to install the shift plate? Thoughts?

Here's the old setup:
DSCF1497_zpsdf791f15.jpg


2014-03-24094003_zps34201052.jpg



Here's the new manifold:

2014-03-16165546_zps3c99da4d.jpg
 
Last edited:

Bondo

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Apr 17, 2002
Messages
71,112
Re: Alpha 1 shift plate for 3 liter (140)

Ayuh,.... You could probably use 2 of the 3 bolts to hold it,...

If the other boss is in the way, grind it off,...

Otherwise, build yerself a bracket to use whatever bolts ya got that are close to where ya wanta be,...
 

Fishermark

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Joined
Oct 19, 2003
Messages
5,617
Re: Alpha 1 shift plate for 3 liter (140)

Thanks for the reply! Yeah... I will probably end up cutting off the boss that is in the way. I also considered getting a stainless steel plate and mounting it to the three bosses, then I can mount the shift plate to that.
 
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