1234 v 1464 on older SAN hull

[obd666]

I "think" the progression is from 644 right to 1464. I'm not sure there is anything in between, but I would check with Delta and ACME in addition to the PN brain.

i think you actually have a couple options between the 644 and the 1464, the 856 and the 1236. the 1236 is supposedly a little less aggressive than the 1464 ... im wondering if the 856 might be the best compromise of low end grab and top speed? i am about to order one and cant make up my mind which to try

[obd666]

IN that case you may have the factory prop which is a 536. That's what my '03 had from the factory and yeah they are weak sauce for any real weight.

am pretty sure that is whats still on mine and ur right, it has to go ...

[core-rider]

Here are the different props they offer and their info. For some reason ACME doesn't show the 536 on their site anymore. I guess they stopped producing it. The numbers I put for it are just a guess. I do know you can go with a little bit larger diameter prop on the pere-2002 SAN because the prop shaft sat a little lower from the hull. I think they can run up to a 14 maybe even 14.5. 13.5 is as big as 2002 and later SAN can run safely.

As you can see the only difference between the 1464 & 1236 is cup. I think the added cup will give you just a bit more top end... enough to notice, I'm not sure. If you're running that little a pitch you shouldn't really be concerned with top end anyway.

I would like to try a hybrid of the 856 & 1464... 13.5 diameter and 15.5 pitch. I think that would be a good compromise of low end and top end. The added diameter would give you some of the low end you lost by dropping pitch. The closets prop to that is the 1248 - 13.50 16.000 0.105 cup 4 1 1/8" RH
I think that is too much of a loos in pitch though.

1464 - 13.50 14.250 0.105 cup 4 1 1/8" RH

1236 - 13.50 14.250 0.150 cup 4 1 1/8" RH

856 - 13.25 15.500 0.060 cup 4 1 1/8" RH

644 - 13.25 16.000 0.105 cup 4 1 1/8" RH

536 - ? 13.25 16.50 0.0105 cup 1 1 1/8 RH

[Kmayotte]

Here's what Jason from wakeprops.com said when I asked about the 1464 after adding replacing hard tanks with 750 and a integrated bow sac. I'm thinking he forgot I had an 04 because the diameter on the 1234 seems too big.

"As far as props go, the 1464 is a popular choice with our Nautique customers, but based on the amount of weight you're running, I think you would be happier with the 1234. It's a slightly larger diameter, which is going to give you better holeshot and speed holding, without increasing the engine RPMs a significant amount."

Thoughts on this...?

[core-rider]

I'm surprised the 1234 even fits. My '03 only has about 3/4" between the prop and hull and that's with the 13.5 diameter, your prop has to be really close.

[Kmayotte]

I'm surprised the 1234 even fits. My '03 only has about 3/4" between the prop and hull and that's with the 13.5 diameter, your prop has to be really close.

I didn't buy it. I didn't think it would fit either.

I'm not sure this thread has helped me make a decisions either. haha.

[seth]

Yeah Im really surprised that the 1234 is being recommended as well. My 1236 has less than an inch of clearance if I remember correctly and was told 13.5 was the biggest to go. I dont think you can go wrong with either the 1236 or 1464. I got the 1236 because when talking to either Acme or Delta (cant remember who) they explained that the cup on the 1236 may grip the water better causing less slip and in turn better fuel economy. I have no problem getting on plane with 3500lbs.

[BrearlyMason]

I have an '06 SAN so my prop rotates the opposite direction, but I use the ACME 1579 and the ACME 1631 and both pull like freight trains! I like the 1579 better though.

ACME 1579
Diameter: 13.5"
Pitch: 14.25"
Cup: .105
Rotation: Left Hand
Shaft: 1 1/8"

ACME 1631
Diameter: 13.5"
Pitch: 14.25"
Cup: .150
Rotation: Left Hand
Shaft: 1 1/8"

The only difference is the "Cup". Whatever "Cup" does it seems like the 1579 pulls harder and gets better gas mileage while at our local lake where we mostly wakeboard without a lot cruising or other "travel". At Lake Powell it seems like the other prop is more efficient, but we do a lot more "traveling" around at Powell and less actual boarding.

[ers906]

I need to look carefully at my boat to see if there is any damage from the prop wash from my 1234. Has anyone noted actually noted damage?

[Chexi]

Eric, measure the distance as well. There was a difference introduced at some point of the model years. 2002 and earlier might have more clearance.

[obd666]

The only difference is the "Cup". Whatever "Cup" does it seems like the 1579 pulls harder and gets better gas mileage while at our local lake where we mostly wakeboard without a lot cruising or other "travel". At Lake Powell it seems like the other prop is more efficient, but we do a lot more "traveling" around at Powell and less actual boarding.

per acme, more cup is akin to more pitch ... so, more cup equals more top end and i would suppose a little less low end grab

[crobi2]

Yeah Im really surprised that the 1234 is being recommended as well. My 1236 has less than an inch of clearance if I remember correctly and was told 13.5 was the biggest to go. I dont think you can go wrong with either the 1236 or 1464. I got the 1236 because when talking to either Acme or Delta (cant remember who) they explained that the cup on the 1236 may grip the water better causing less slip and in turn better fuel economy. I have no problem getting on plane with 3500lbs.

Seth, will your boat still go fast enough to pull a slalom skier if you had to? I have a 2000 SAN with the GT-40 and the prop that is on there is struggling with the 2500# I run (have to send everyone up into the nose to get on plane). I need to pitch down, but I have to pull the occasional slalom skier (my wife - so there's no gettin out of it!!!) and I was looking at the 1236 precisely because of the extra cup. How many RPMs are you running at approx. 36 mph unloaded? Thanks!

[OKWAKEBDR]

I have to pull the occassional water skiier also. With my 1236, I'd say approximately 4500 RPM for 36 mph. I am at 6,000 feet of altitude though. I had an 856 that i hit on a stump and replaced with the 1236. The 856 is probably running slightly lower RPM at that speed, but not much.

[seth]

Im not really sure, I never pull slalom skiers. I would have to tow them off my tower because I took out my ski pylon for my ballast pumps! I never even go over 30. I think I am somewhere around 4000rpms at 30mph.

[crobi2]

Thanks Okwakebdr and Seth!

Does anyone else have RPM/mph info on the acme 1236? Anybody pull slalom skiers with this prop?