ACME 430
Printed From: CorrectCraftFan.com
Category: Buy and Sell
Forum Name: Boat Parts For Sale
Forum Discription: Parts for sale only
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=30518
Printed Date: May-06-2024 at 11:26pm
Topic: ACME 430
Posted By: Hollywood
Subject: ACME 430
Date Posted: July-01-2013 at 2:45pm
| Perfect shape. $300 shipped to cont. 48. I will take pics. |
Replies:
Posted By: bhectus
Date Posted: July-01-2013 at 4:17pm
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Of the prop, not of yourself. ------------- '02 Ski Nautique 196 w/ 5.7 Apex bowtie - Sold '87 Barefoot - sold '97 Super Sport Nautique - originally custom built for Walt Meloon '97 Ski Nautique '83 SN 2001 |
Posted By: 65 'cuda
Date Posted: July-01-2013 at 4:43pm
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Can I try before I buy? Bring it to Tennessee. I'll give you a call. Regards Gary ------------- Gary http://www.correctcraftfan.com/diaries/details.asp?ID=941" rel="nofollow - 1965 Barracuda SS |
Posted By: Hollywood
Date Posted: July-01-2013 at 4:59pm
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Saw your call. I will bring it to TN. ------------- |
Posted By: 65 'cuda
Date Posted: July-01-2013 at 5:28pm
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I'm not sure the 73 has enough motor to spin it. I would not want to hold up a sale for you. If you still have it in a few weeks, bring it. Regards Gary ------------- Gary http://www.correctcraftfan.com/diaries/details.asp?ID=941" rel="nofollow - 1965 Barracuda SS |
Posted By: TRBenj
Date Posted: July-01-2013 at 5:30pm
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Gary, how many RPM are you pulling the 540? ------------- |
Posted By: 65 'cuda
Date Posted: July-01-2013 at 5:43pm
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It spun a 540 to 5050-5100. It spins its current 13x13 OJ four blade to the same. The acme was 49 plus mph. The OJ is 48 plus. The fastest prop was the 13 x 13 federal at 50 plus 5100 rpm plus, all GPS. ------------- Gary http://www.correctcraftfan.com/diaries/details.asp?ID=941" rel="nofollow - 1965 Barracuda SS |
Posted By: TRBenj
Date Posted: July-01-2013 at 5:56pm
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I would think that P-headed 351w would be mighty happy spinning in the 5000-5200rpm range... my guess is that it will be tough to beat the 540! The 430 may cut your RPM by as many as 600... and holeshot will suffer as well. The boats that seem to pull that prop well are a bit beyond the 1hp/ci mark (Alan's '81, Hotboat's Martinique, etc) or something with more cubes- Eddie has a 431 (LH version) on his 383. I also like the 430 as a pulling prop on our BFN. So, I dont think it will be the hot ticket for you- but I'd love to see the data nonetheless! ------------- |
Posted By: 65 'cuda
Date Posted: July-01-2013 at 6:16pm
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If it will be that much of a rpm drop then I would not be interested. ------------- Gary http://www.correctcraftfan.com/diaries/details.asp?ID=941" rel="nofollow - 1965 Barracuda SS |
Posted By: TRBenj
Date Posted: July-01-2013 at 6:22pm
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My guess is that 300-400rpm is more typical for a 1" change in pitch... but http://www.correctcraftfan.com/forum/forum_posts.asp?TID=19839&title=new-acme-430-prop-report" rel="nofollow - Alan saw a 500rpm difference between his cupped 540 and the 430. Though, he was probably flexing the 540 a good bit at those higher RPM. I wish I had a datapoint for you to compare the 430 and 540, but the tach only goes to 6k. ------------- |
Posted By: hotboat
Date Posted: July-02-2013 at 7:07am
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If you get to try that let us know how it goes, I'd like to see that comparison as well.tuff one to call without trying ------------- Brian |
Posted By: 62 wood
Date Posted: August-30-2013 at 12:47am
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Gary, Did you ever try the 430? / Results? ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1117&sort=&pagenum=6" rel="nofollow - 64 American Skier 62 Classic.. 73 Ski Nautique |
Posted By: 65 'cuda
Date Posted: August-30-2013 at 9:45am
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Did not try it. ------------- Gary http://www.correctcraftfan.com/diaries/details.asp?ID=941" rel="nofollow - 1965 Barracuda SS |
Posted By: Hollywood
Date Posted: August-30-2013 at 10:13am
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Sold to a 90 BFN owner. ------------- |
Posted By: phatsat67
Date Posted: August-30-2013 at 10:13am
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Get it Steve. Edit: I posted that the same time as HW. ha. ------------- |
Posted By: tullfooter
Date Posted: August-30-2013 at 11:24am
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Got it. I hope to put it on the boat tonight. I will let you know the results. I will have to bust out my GPS. My speedo only goes up to 50, and it's pegged with the stock prop that's on the boat. I hope to install my Stargazer GPS soon. Just have not had the time. ------------- Play hard, life's not a trial run. '85 BFN '90 BFN White Lake, Michigan |
Posted By: phatsat67
Date Posted: August-30-2013 at 1:18pm
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What type of R's is it turning WOT right now Steve? ------------- |
Posted By: 62 wood
Date Posted: August-30-2013 at 2:04pm
Acme 540 .... 5,000 rpm (FUN Prop! Wild!!! really don't like 5g tho) OJ 13x13 .... 4,600 rpm (prop has bad vibration) thinking of re-pitching, maybe 14? Ellis 13x14 .. 4,200 rpm (predictable, very smoooooth) all props ran in the 46-48 mph range. I definitely like the 4200-4600 rpm range for everyday cruising... ....got any "hidden weapons" on your shelf?  . ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1117&sort=&pagenum=6" rel="nofollow - 64 American Skier 62 Classic.. 73 Ski Nautique |
phatsat67 wrote:Posted By: phatsat67
Date Posted: August-30-2013 at 2:13pm
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Ha I meant The BFN Steve Steve ;). Put the 208 on it? Turns my boat about 4350 WOT at 43.5 ish gps mph. ------------- |
Posted By: 62 wood
Date Posted: August-30-2013 at 2:16pm
tooo many Steves.  ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1117&sort=&pagenum=6" rel="nofollow - 64 American Skier 62 Classic.. 73 Ski Nautique |
Posted By: tullfooter
Date Posted: September-16-2013 at 9:52am
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Hollywood Finally got to try the 430. Very nice!  I was feeling a little vibration with the stock prop that was on the boat. The 430 ran perfectly smooth. The holeshot is much better. Top end seemed a little quicker, though I had no GPS to get an accurate speed. The speedo was pinned over the 50 mark. Sorry, I didn't check the RPMs at WOT. Will do that next weekend. Thanks again. Steve ------------- Play hard, life's not a trial run. '85 BFN '90 BFN White Lake, Michigan |
Posted By: 62 wood
Date Posted: September-16-2013 at 10:23am
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Please keep us posted... interested in MPH / RPM's. What prop was on the boat before?? ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1117&sort=&pagenum=6" rel="nofollow - 64 American Skier 62 Classic.. 73 Ski Nautique |
Posted By: TRBenj
Date Posted: September-16-2013 at 10:32am
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Steve, theres not much youre going to be able to learn from how a 430 runs on Steve's boat. The hull and powerplant are just too different from yours to draw any meaningful comparisons. In my experience, the 430 overturns by just a tad on a BFN, so my guess is that 50-52mph would be in the 4800-5000rpm range. Talking Acmes, the difference of 1" pitch (all else being equal) is approx 300-400rpm. So, if youre really turning that 540 nearly 5k, then the 430 should back it down to ~4600. Im not convinced the boat will perform better with a larger prop on it, and Im not convinced it will be "easier" on the powertrain to lower the RPM (larger prop = larger load) but if you just want to cut the revs some, then the 430 will certainly do that. |
Posted By: phatsat67
Date Posted: September-16-2013 at 10:48am
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When my boat spins higher RPM with the 540 it does everything with much less effort IE cruising mid range and wot. Even though the 208 was butter smooth on it it sounded like it was working its guts out compared to the engine noise running the 540. Chevys like that little extra Zing anyways! This many Steves is starting to remind me of Multiplicity. ------------- |
Posted By: 62 wood
Date Posted: September-16-2013 at 11:49am
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Hey guys, Its been kind of a "screwy" summer, haven't had the boat out a lot. For kicks, I have been messing around with some of the other props I have. I only ran the 540 at GL and a couple hours on the river one evening. I absolutely loved the "wildness" of the thing at all RPM's. Would love to get some more time on the prop. Will probably throw it back on next time we go out. In my mind, I wish I could bring the r's down 4 or 500, but probably not the end of the world spinning 5G either. I need to get a "real gps" (hmmmm, Christmas is coming :)and run MPH comparisons at different RPM's of each prop. Probably be next summer before that happens tho. . ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1117&sort=&pagenum=6" rel="nofollow - 64 American Skier 62 Classic.. 73 Ski Nautique |
Posted By: TRBenj
Date Posted: September-16-2013 at 11:57am
I know you keep hinting at this... but Im curious what your motivation is. Are you looking for a more relaxing experience (lower RPM for a given speed) for cruising purposes? Trying to increase fuel economy? The former is a legitimate reason to consider a larger prop like the 430. The latter may be as well- but you'd have to test it. (I suspect that lower revs may not always equal better economy.) On the other hand, if your intention is to improve performance or reliability, then your line of thinking may be backwards. You can pick up Garmin etrex units for pretty cheap on ebay! |
Posted By: 62 wood
Date Posted: September-16-2013 at 12:20pm
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Tim, Running the Ellis 13-14, the boat has been very easy on fuel. In the little running on the 540, it's hard to say what will happen there....really don't expect a big difference. The majority of our running is cruising... As much fun as the 540 is, I know I'm going to be running hammer down more often.  Fuel economy is important, but I am more concerned about over revving this "tired old" SBC. That's where I keep wondering about a bit more pitch. Doubt we will get out much more this year, but I will probably start running the 540 as my "every day" prop for a while and go from there. . ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1117&sort=&pagenum=6" rel="nofollow - 64 American Skier 62 Classic.. 73 Ski Nautique |
Posted By: TRBenj
Date Posted: September-16-2013 at 12:33pm
This is where I think your logic is mixed up, Steve. It will be much easier on the engine (and trans) to run a smaller prop, even with the slightly increased revs. Bigger prop = bigger load = higher cylinder pressures and temperatures. If you want to go easy on it, keep a smaller prop on there! The revs we're talking about (5k and below) are very tame. Surely those piston speeds arent a concern for a big bad Chevy! |
Posted By: Riley
Date Posted: September-16-2013 at 12:40pm
| Is the max rpm set by the hp/torque curves? The older GM 5.7 marine engines had a redline of 4k and the newer ones 5k. My brother's Century which has a 1977 engine is 4k. It doesn't seem it would be good for the engine to run it up to 5k |
Posted By: phatsat67
Date Posted: September-16-2013 at 1:05pm
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Bruce, Steve's Chevy is a hot little 270 hp Thermo Electron so it probably makes max power around 4600 RPM and sounds nice and happy up at that 5k number. If I remember Steve doesn't that decal have some stuff with max WOT rpm and cruising rpm and such? Yes the max rpm is set by the spec of the engine. If it falls on its face no reason to spin it higher but in Steve's case that thing screams almost 50 mph at 5k. ------------- |
Posted By: Riley
Date Posted: September-16-2013 at 1:16pm
Then it sounds like that 540 the right prop for it and any problem he has with gas usage has more to do with his inability to stay out of the 4 barrel.  That mirror you sold David is great. It's like watching a big screen HD TV. |
Posted By: 65 'cuda
Date Posted: September-16-2013 at 1:16pm
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How often are you actually going to turn it 5000 rpms? We barefoot the 73 every time it is in the water, and the boat has not been WFO in two years, (at least while I'm driving it, and I don't suspect anyone else has put it to the throttle stop either). My footing partner likes to long line at 43-44 mph. so we're turning 4500 rpm. Do you lug your manual transmission cars up the hills? Remember what the detonation knock sounds like when you do? I'm not sure I could discern that sound in the boat at wide open. When I tested props I remember how efficient the cruising performance of the 540 was, in the mid 20's to the low 30's the mph's were above the rpms. I would pay attention to the rpms and the speed at the cruising speed you like, I'll bet the difference is not as great as you think. Slightly over propping will cause a bigger penalty in fuel consumption when loaded, (skiing, speed runs, etc.) ------------- Gary http://www.correctcraftfan.com/diaries/details.asp?ID=941" rel="nofollow - 1965 Barracuda SS |
Posted By: GottaSki
Date Posted: September-16-2013 at 1:38pm
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I concur, higher rpm higher vacuum condition could be better for economy and as your remarked, damn fun too. wouldn't worry about it fragging, chevies like to spin. ------------- "There is nothing, absolutely nothing, half so much worthwhile as messing around with boats...simply messing." River Rat to Mole |
Posted By: phatsat67
Date Posted: September-16-2013 at 1:51pm
That they do. Which mirror Bruce? I seem to have a problem keeping my secondaries closed too ;). Although with the 540 its almost possible to pull me 38 footing and stay out of the secondaries. I think they start to tip in just a tiny bit at foot speed. ------------- |
Posted By: 62 wood
Date Posted: September-16-2013 at 4:56pm
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[QUOTE=65 'cuda] How often are you actually going to turn it 5000 rpms? ..... and the boat has not been WFO in two years, [QUOTE] Two years? Really!? I probably make one or two WOT every time out. (btw, WFO??) I haven't done anymore engine tuning since on the trailer before GL. Probably wouldn't hurt to throw the vacuum gauge on her to check things out. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1117&sort=&pagenum=6" rel="nofollow - 64 American Skier 62 Classic.. 73 Ski Nautique |
Posted By: phatsat67
Date Posted: September-16-2013 at 5:12pm
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Wide F***ing Open Steve haha.. I'm not sure I have never taken mine out and not done a WOT run just because I can. Maybe not a top end WOT run but you gotta make it point down to hear some Ford music. ------------- |
Posted By: 62 wood
Date Posted: September-16-2013 at 5:25pm
WFO I'm with you... WOT, maybe 30 seconds or so...just because you can. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1117&sort=&pagenum=6" rel="nofollow - 64 American Skier 62 Classic.. 73 Ski Nautique |
Posted By: phatsat67
Date Posted: September-16-2013 at 5:35pm
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I stuff the thing down a lot more now than I did pre 540 days. I was getting back to putting around with the 208 on it but I got the 540 back on and now it's hot rod city ha. Need to get the gps back on it again and tweak the timing so see if I can find another MPH. ------------- |