transmission swap PCM 40A with new 80A

My PCM 40A needs a rebuild, quote was for rebuild was almost as much as new 80A model.
Any one know of any issues swapping transmissions? It is supposed to be a swap out.
According to skidim. I have 1995 Sport Nautique - direct drive. ONly change I see is that my engine will now sit level. - hoping no shaft length changes, etc Thanks for the help !!

here is details

TRANSMISSION KIT, PCM 80A 1.23:1
New PCM 80A transmission kit replaces PCM 40A 1.23:1 ratio. Kit includes new damper plate, 12" transmission cooler and lines. Same dimensions as the original PCM 40A with 9 degree downangle output coupler. The 80A fluid pump is not reversible and will only work with a left hand (standard) rotation engine.

According to Skidims description the lengths are the same so there should be no need to change shafts.
Also if you did have the 1.23:1 in there before the motor should have sat close to level to begin with there should be no change there either.

And yes, the PCM 40A transmission is the 1.23:1.

Mine was still labeled as PCM40a when I swapped it, then they changed it to the 80a model...

Same set up, engine sit almost level, and yes the output flange has a down angle.
In my case It was same model replacement and required no modification. I used same shaft and plate.
For the 80A look like the kit comes with the proper plate, and seems it will let you use the same shaft.
Probably you should ask Skidim to confirm If shaft need to be replaced.

michaelwlaster wrote: I will say since replacing the trans.ission I noticed the boat takes longer to plane and longer to hit top speed. I guess I would expect a newer transmission to operate better, but it is a different transmission technically.

They're both the same 1.23 ish to 1 ratio, so if you're missing acceleration and speed, I think I'd be looking at the engine and not thinking the new transmission is the problem unless maybe you swapped props at the same time to a different pitch and/or diameter

And then it would be the props fault

Maybe a plug wire got knocked off or a plug got broken during the work.

Along with the throttle cable, I'd be checking the wires and the plugs as an easy starting point

Can I ask how many h0urs you guys got out of the 40A before failure?
I always thought the transmission in a direct drive was pretty much a lifetime part unless it was ruined by something.

My first BW unit went 1,500 hours in our 1978 Nautique. I did put clutch plates in it but only because I broke them using reverse as a brake in a panic stop. Former Jet Boat driving made me think reverse would help stop faster, it did not, but it did break my clutch plates. This was 25 years ago.
I only replaced gaskets and the clutch plates, same bearings went the full 1,500 + hours.
Sounds like the 40A does not last as long as the old units, I think we called the BW unit a Velvet Drive?

8122pbrainard wrote: FFImarine wrote: I got a great deal on a boat load of clutch kits and seal and gasket kits for a 40 series so We can rebuild your 40 series for $1,200 while supplies last. Good to know since Eric always commented on how expensive the PCM parts are having to get them from PCM only. Sort of like Walters "special" bearings only available from Walters!

I remember a long time ago how you had a special distaste for the Substandard engineering of the Walters V-drive.

SCove wrote: Hi - just came across this while searching, and wondering if this $1,200 price is still good? I can pull it and send it out in the next week or two if so. Thanks!

FFI marine who has the $1,200 price (Joe) hasn't been logged on since Feb 5th.

You should probably click on the link below and give him a call

link

Maybe he'll answer the phone

Thanks! Will do. Planning to pull it tomorrow and once I have it out and ready, will contact you.