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Posts: 238
Location: Rhinelander | Lone Star.....sure will.
But there is a chance the gearing was/is changed in the lower unit with the racing type lower unit on the boat. My results may or may not help anyone but will post what we find. |
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Posts: 477
Location: Iowa | Understand that. Will be interesting to see. |
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Posts: 176
Location: Tomahawk, WI | I think there is a mistake, i just installed my new Rev 4 23 pitch, i could barely get out of the hole, motor wanted to quit, too much prop to turn, only could get 4800-5000 rpm's wot. When i tested Sleds prop i failed to look at the stampings on the prop, i now believe he has a 21 pitch. Sled is going to physically check his for me this afternoon. Sorry for any misinformation, when i get this figured out i will let you guys know. |
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Location: Contrarian Island | you believed something Sled said? don't you know he's full of bs!! jk Sledster
tho ? i'm surprised it didn't turn it actually...a buddy has a 4 blade 25 pitch Solas...(i physically saw it stamped 25) on a 150 suzi on a 692..he turns it just fine...pushes his 48 on avg..
23 pitch 4 blade shouldn't be all that bad for your rig...? you have a 175 opti right? hmmmm the plot thickens! I'll be testing a custom tempest 23 pitch on mine this weekend..be interesting to see if / how the 175 suzi turns it....
Edited by BNelson 7/27/2012 11:05 AM
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Posts: 176
Location: Tomahawk, WI | Ya, not Sleds fault...HAhahah. I should have checked the stampings myself before i purchased. I could actually turn it, but i had to work the throttle, when up on plane it went like a raped ape but i could only get about 5000 rpm's out of her. It was hot and muggy last night so that has a little to do with it also. |
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Posts: 238
Location: Rhinelander | My gears must be changed in my 175efi.
I can spin a 23p Trophy up to 5900 but hole shot still sucks.
Did anyone ever try a 23p trophy and what rpm's are they hitting?
Edited by Hodag Hunter 7/27/2012 11:07 AM
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Posts: 238
Location: Rhinelander | My Rev 23p isn't in yet..... picking up the 21p again to try tomorrow.
Talking with my bud (owns a big boat dealership) said if my gears were changed the prop shaft would probably be larger. (he never saw my boat)
I will have both hub kits with me this weekend. Pantlegger if you want to try the 21p sat or sun get a hold of me. We can meet somewhere maybe sled has time too.
My weekend is filling fast with fishing appointments, bear baiting and projects from the wife. |
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Location: Contrarian Island | different motor/gearing I know but I ran a 23 pitch customized Tempest Plus on my 175 suzi and it overrevved at top end..great holeshot/mid range but not enough prop....beeper warning came on and it shut the motor down...I think a 25 p tempest plus would be about right and probably be the next one to play with if anyone has one they aren't using lemme kno!
Edited by BNelson 7/27/2012 11:08 AM
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Posts: 238
Location: Rhinelander | your suzi four stroke I thought would have lower gears...... |
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Location: Contrarian Island | we can spin 16" diameter props on our suzis... this tempest was a 14...so it makes sense....will try a 25P tempest plus sometime as it might be a great top end prop. |
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Posts: 176
Location: Tomahawk, WI | Hodag, i dont need to try any other prop, just waiting for sled to let me know if his is a 21 pitch for sure, thanks anyway. I have a 23 pitch Trophy small hub with a large hub aluminum ring and open exhaust ports that actually works pretty good on mine, you are welcome to try it if you want.
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Posts: 238
Location: Rhinelander | How is the 23p trophy out of the hole? What is the wot and max rpms you can get with that prop?
Edited by Hodag Hunter 7/27/2012 11:30 AM
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Posts: 176
Location: Tomahawk, WI | It was good until i installed the large bore ring, now the boat noses up like a bass boat than at the optimum rpm's it slams down to the water and than hold on, great mid range. i can turn that prop to 5900 rpm's also. Without the bore ring, if i remember, the hole shot was great. I believe with the bore ring i wasnt getting enough exhaust over the prop to get more rpm's to shoot me out of the hole. Maybe with your gearing the bore ring may help you. Did the trophy you tried have a large hub? or is it a small hub? |
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Posts: 5874
| PANTLEGGER - 7/27/2012 9:35 AM
I think there is a mistake, i just installed my new Rev 4 23 pitch, i could barely get out of the hole, motor wanted to quit, too much prop to turn, only could get 4800-5000 rpm's wot. When i tested Sleds prop i failed to look at the stampings on the prop, i now believe he has a 21 pitch. Sled is going to physically check his for me this afternoon. Sorry for any misinformation, when i get this figured out i will let you guys know.
What vent plugs do you have in?
I don't see a 6-700 RPM difference from a 23 to a 21? Although you do lose a lot of HP in the real hot and muggy air. Could explain a couple hundred. Als |
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Posts: 176
Location: Tomahawk, WI | Shep, vent holes are plugged solid, i know i could get a better hole shot with them out, but the prop i borrowed from Sled also had solid vent plugs in. |
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Posts: 110
Location: NEW LENOX IL | BNelson - 7/27/2012 11:07 AM
different motor/gearing I know but I ran a 23 pitch customized Tempest Plus on my 175 suzi and it overrevved at top end..great holeshot/mid range but not enough prop....beeper warning came on and it shut the motor down...I think a 25 p tempest plus would be about right and probably be the next one to play with if anyone has one they aren't using lemme kno!
The problem was due to your visor catching too much wind ,therefore changing the angle of attack of the hull causing the prop to ventilate . :0)
That's too bad Brad , I was hoping you would see at least 55 .One of my buddies has a 25"fury but not sure how long I can get it for if at all . |
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Posts: 5874
| PANTLEGGER - 7/27/2012 1:02 PM
Shep, vent holes are plugged solid, i know i could get a better hole shot with them out, but the prop i borrowed from Sled also had solid vent plugs in.
Those vent pluggs need to be opened up. Either medium or large. That's a big prop to start turning. I'm pretty sure I had medium plugs on my 200 Opti.
Try taking two out opposite from each other. That should allow the prop to cavitate enough to get the power band up on the hole shot. |
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Posts: 238
Location: Rhinelander | I tried the 21p Rev 4....shame on me for fishing such "small lakes" but haven't had time to take it to a large lake to really stretch her out with out running out of lake water.
This is what I know so far, the hole shot is better than the 23p trophy and mid range is neck snapping on the 21p. That alone has convinced me to keep it.
What is the WOT and rpms? don't know yet. The last few lakes I was on only give me about 400-500 yards before I need to power down. I can hit upper 40 mph's but need to slow down because of boat traffic and neck down areas. Screwing around with the hyd jack plate is lengthing the test time also.....still searching for the best hole shot height and adjustment at speed.
Darn bear baiting and great fishing on a few of these smaller lakes is not giving me enough daylight to "waste" time testing a prop. |
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Posts: 42
| my 98 690vs with a 175hp mercury efi has a 4 blade 23p custom prop from dah, think it is a trophy will pull 58 to 64mph gps at 5600max rpm pending on temp outside with two guys, gear and 1/2 tank to 3/4 tank of gas works the best, also have a 9.9 four stroke kicker on back. If props are even a question I would call dah props, they are the best I have found.
Edited by glog 8/7/2012 5:59 PM
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Posts: 238
Location: Rhinelander | Glog, I see a re-power in the near future and at that time I do plan on going with a custom prop with dah. Not fond of the chance of shelling out big bucks for a prop that may not be compatable with the new motor.
Until then I will probably stick with the rev-4 21p on my Merc 175 efi.
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| you can buy my 175 suzuki so i can get a 175 pro xs! ; ) |
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Posts: 110
Location: NEW LENOX IL | glog - 8/7/2012 3:51 PM
my 98 690vs with a 175hp mercury efi has a 4 blade 23p custom prop from dah, think it is a mercury trophy will pull 58 to 64mph gps at 5600max rpm pending on temp outside with two guys, gear and 1/2 tank to 3/4 tank of gas works the best, also have a 9.9 four stroke kicker on back. If props are even a question I would call dah props, they are the best I have found.
That's flyin ... Wow |
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Posts: 42
| why do you see a re-power soon, is your compression going bad? These 175 merc efi's from the research I have done are suppose to be one of the best motors merc has made, back in the day! |
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Posts: 42
| Took reef hawg out when I first bought it and he coudnt believe it either, said it halls the mail! You would think that with that much speed that hole shot would suck but it doesnt. This is why I recommend dah props.
Edited by glog 8/7/2012 5:00 PM
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Posts: 477
Location: Iowa | Anyone have more updates this year? I am having trouble finding different props to test yet, so am going to find a Rev 4 and just go with it, unless some of you have changed props with better results Thanks guys. |
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Posts: 477
Location: Iowa | Ordered a 20 pitch rev 4. Filled up the tank and tested it tonight. Jumps out much better than the High 5, no slipping because of the full tank of fuel up front. The High 5 had a tendency to blow out with full fuel, just not enough to hold the front up right, unless it was about half empty. Full trim tonight had me about 5450rpms and hit 51mph once. Otherwise it was just under 51 most of the time. Very nice ride and bite. A 19 pitch would probably be ok yet, but I'm very happy with this one. |
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Posts: 1901
Location: MN | I'll have to try that prop. Pretty happy with the hole shot and top end with the hi 5 on ours, but would love to eliminate the porpoise when the tank is over half full. What did that prop cost?
Edited by Propster 8/1/2013 9:43 PM
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Posts: 477
Location: Iowa | Boat was solid at all speeds and trims, no porpoising any more. PropGods.com. in Florida had it drop shipped from Mercury for me out of Wisconsin. $515 to my door and it was here in 2 days. EBay was $535 and up. Local dealer was going cut me a deal and let me have one for $650! Ken at propgods is great to deal with and knows his stuff. If you talk to him, tell him you heard about him on here. Maybe he will put an ad here too. My high 5 is now for sale. I have no reason to keep it around now.
Edited by Lone Stone 8/1/2013 9:13 PM
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Posts: 379
Location: Thief River Falls MN | I run a 20 p Rev 4 on a 620 with a a 250 Verado Pro Four and cannot break this prop loose. Great all around performance. Not apples to apples comparison, but the Rev 4 is a great pop when mounted high on a heavy boat.
Edited by toddb 8/3/2013 10:45 AM
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