How can i tell if i have a one to one tranny?

[1987skinautique2001]

I have a 1987 ski nautique 2001 and in the next few months i want to get a four blade prop.How can i tell if i have a one to one tranny,so i know what prop to order.With the ballast i have in there and the people, i have to floor the boat to get it up and out of the whole.So im trying to see what prop to go with so i can use less fuel and be easier on the engine and drive train.I did a search and could find what i was looking for.Thanks for the help.

[M3Fan]

RE: How can i tell if i have a one to one tranny?

You can tell because your boat is made before the 1989 model, when they released the redux trans.

[1987skinautique2001]

haha,well that was easy enough.thanks for the help

[Separator]

Thats way too easy...

Make a large easy to see line mark on the shaft coupling at the transmission then have someone drive the boat down the lake at 3500 RPM's and while they drive you count the revolutions of the shaft. If the shaft turns 3500 revolutions like the engine is then it s a 1-1 trans.

ONLY kidding....Although this is what a 1-1 trans does.

Yes the 1-1 Borg Warner Trans was used up to the start of the 1989 model year.

[slob02]

The engines with a 1:1 are set at an angle.

[Rick]

I think more important than the tranny is the prop you now have. It should be stamped on the prop either between 2 blades or on the end under the nut. If you need more hole shot and can live with a little less top speed I would suggest going down a couple of inches of pitch. I'll bet you are running a 13X13X1" You could try a 13X11 or 13X10. I happen to have a 14X10 3 blade you could try. If you like it keep it for $100.00 Let me know

[882001]

i have an acme 542 its a 13x11.5 i would recommend it to everyone with a 2001!

[1987skinautique2001]

Thats way too easy...

Make a large easy to see line mark on the shaft coupling at the transmission then have someone drive the boat down the lake at 3500 RPM's and while they drive you count the revolutions of the shaft. If the shaft turns 3500 revolutions like the engine is then it s a 1-1 trans.

ONLY kidding....Although this is what a 1-1 trans does.

Yes the 1-1 Borg Warner Trans was used up to the start of the 1989 model year.

Haha,I tried that and lost count.(kidding)

Yeah im just looking for a good prop that will get the boat up and out of the water nice and quick with all the people and ballast.I thought the four blade props were the best for this.But then again i dont know what im talking about.If anyone could make some recomendations with prop brand, have at it.I would be willing to buy used aswell.And rick thanks for the offer,but i think i want a four blade prop,like i said i may not HAVE to have a four blade i just thought they were better.thanks for the help

[Bremsen]

Listen to 882001. Do a search on the acme 542, its the prop to have in the SN2001.

[1987skinautique2001]

Ok,well i did a little searching and it seems there is alot of people that like that acme.I even read some guys went from a fourblade to this three blade acme.Were is the best place to order the acme 542.And should i go with the 13x11.5 as said above.Also,just to be sure its a right hand prop with a one inch shaft.Thanls for all the help i really do appreciate it PDT_003

[nch20skier]

You should try dicount inboard marine as well as the larger watersports dealers such as overtons and barts

[Bremsen]

There used to be a discount/GB setup through pn.com I think, so you might want to check the classified section. The cheapest I've found on the web was boarditup.com.

[Separator]

Yeah im just looking for a good prop that will get the boat up and out of the water nice and quick with all the people and ballast.I thought the four blade props were the best for this.But then again i dont know what im talking about.If anyone could make some recomendations with prop brand, have at it.I would be willing to buy used aswell.And rick thanks for the offer,but i think i want a four blade prop,like i said i may not HAVE to have a four blade i just thought they were better.thanks for the help

OJ Force 13x13 Force Four blade works great from what my freinds say on their 85-88 SN's. Stay away from a larger diameter 3 blade prop as the 4 blade will perform much better and smoother out of the hole.

[Onthewater]

it is delta prop that is giving 10% off for the planet nautique discount. i will be ordering a 540 from them in the next few weeks.

www.deltaprop.com

code = PNACME06

[TRBenj]

it is delta prop that is giving 10% off for the planet nautique discount. i will be ordering a 540 from them in the next few weeks.

www.deltaprop.com

code = PNACME06

Actually, I think its only a 5% discount, but its still the best price out there. Worked out to be $302.10 for an Acme 612 (regularly $318). Shipping is free on orders over $100 :grin: