User Tag List

Page 2 of 10 FirstFirst 1 2 3 4 5 6 7 8 9 10 LastLast
Results 16 to 30 of 142
  1. #16
    Join Date
    Apr 2001
    Location
    Lake Coochiching, Ontario
    Posts
    7,710
    Thanks (Given)
    23
    Thanks (Received)
    269
    Likes (Given)
    472
    Likes (Received)
    1542
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)
    2000 hours would be the rest of my boating life,so if the rebuild was stupid expensive it would be on the next owner.

    But I am hoping my two strokes outlive me

  2. Likes Brad Zastrow, 22R, Forkin' Crazy liked this post
  3. #17
    Join Date
    Oct 2005
    Location
    savannah,ga
    Posts
    1,182
    Thanks (Given)
    270
    Thanks (Received)
    82
    Likes (Given)
    817
    Likes (Received)
    484
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by David View Post
    2000 hours would be the rest of my boating life,so if the rebuild was stupid expensive it would be on the next owner.

    But I am hoping my two strokes outlive me
    I'm with you!

  4. #18
    Join Date
    Mar 2008
    Location
    South Africa
    Posts
    575
    Thanks (Given)
    0
    Thanks (Received)
    7
    Likes (Given)
    0
    Likes (Received)
    30
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Mercury warranties the Sea Pro range to commercial users for 2000 hrs or 2 yrs, at least here they do.
    So they must be expecting well over that.
    There was a 50 4 stroke a good few years ago that ran over 10 000 hrs on the Okavango delta

  5. Likes scott reierson liked this post
  6. #19
    Join Date
    Sep 2005
    Location
    SOCAL, the land of 75* and sunny!
    Posts
    2,248
    Thanks (Given)
    221
    Thanks (Received)
    98
    Likes (Given)
    641
    Likes (Received)
    506
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Brad Zastrow View Post
    There are cars that spin 8000 rpm that do not need rebuilding every 100 hours. Motorcycles that spin 12k plus that run for a long time. I have blown at least eight 2.5 racing motors that were not drags, just 260's and 280's. I love the 300x but might be tempted to go with the new engines.
    You have to account for the fact that the naysayers of these engines will on one hand tell you how unreliable they are, then say that they're based off of 20 year old auto tech... Which seems to be pretty damned reliable. The more applicable question may be service (ie, valve adjustment, etc) moreso than rebuild. These motors are pretty badass.

  7. Likes Speed Jr. liked this post
  8. #20
    Join Date
    Feb 2007
    Location
    lily lake WI
    Posts
    3,205
    Thanks (Given)
    8
    Thanks (Received)
    57
    Likes (Given)
    1560
    Likes (Received)
    342
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Brad Zastrow View Post
    There are cars that spin 8000 rpm that do not need rebuilding every 100 hours. Motorcycles that spin 12k plus that run for a long time. I have blown at least eight 2.5 racing motors that were not drags, just 260's and 280's. I love the 300x but might be tempted to go with the new engines.
    Brad you also have to realize that the crap oil that was sold to you and the fact the fiberglass crap from you fuel tank going into your 2.5's had alot to do will it look at my 2001 2.5 280 over 375 hours still Virgin it will be rebuilt this year but still going look at Fast John Lentzkow his 28' skater has 1998 280's race version with 300 hours both are finally getting rebuilt and when he took me for a ride 2 years ago he was wot for a very long stretch on the Mississippi between 15-20 miles we still hit 115 not bad and some old paid for obsolete motors it is all how you care of things and if it was built on a Wednesday lol I went for a ride early last summer a Triton bass boat had a new 300R on it the lower end torque was stronger than his 250xs mid was about the same the new 300r had 5 miles per hour more top end he said gas was very close but when I saw him in the fall he had a new 250 xs back on it I asked him why go back 2 prop shaft failures in under 150 hours mercury covered one not the second and he lost both props that cost him alot of money his propshaft was on a ridiculous backorder date so he sold the 300r for more than what he paid for it as is and found a brand new 250xs if I were you try it Brad you can Afford it see if they are better 🤷*♂️ if not bolt your 300x back on

  9. Likes JBS, Forkin' Crazy liked this post
  10. #21
    Join Date
    Apr 2001
    Location
    Illinois
    Posts
    1,560
    Thanks (Given)
    10
    Thanks (Received)
    77
    Likes (Given)
    141
    Likes (Received)
    588
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    The new 300R and 450r come with new design one-piece propshaft. Supposed to cure the failures.

  11. #22
    Join Date
    Jun 2001
    Location
    Crosslake, MN
    Posts
    1,992
    Thanks (Given)
    39
    Thanks (Received)
    69
    Likes (Given)
    464
    Likes (Received)
    522
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Brad Zastrow View Post
    The new 300R and 450r come with new design one-piece propshaft. Supposed to cure the failures.
    R you kicking around triple 300R’s or twin 450’s ?

    MDS

  12. #23
    Join Date
    Nov 2019
    Location
    MI
    Posts
    230
    Thanks (Given)
    0
    Thanks (Received)
    15
    Likes (Given)
    2
    Likes (Received)
    144
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Speed Jr. View Post
    With what some people are willing to pay for used 300x and 300xs motors, why not upgrade to new stuff....There's a reason why there is an uptick of people who are upgrading. Lock it in now cause they aren't getting any cheaper and the value of the dollar isn't getting stronger. Twin 450s or Triple 300Rs would be slick Brad.

    A 300R is what, 36k if you can find one? (and they aren't getting any cheaper)

    A 300X or 300XS is 10k to 15k?

    I bought 300XS for my Progression because the "upgrade" to a 4 stroke is a bit ridiculous.
    2023 Progression 22 w/ 2015 Mercury 300XS. 2018 Kawasaki Ultra LX. 1969 Hustler Wildcat. Gone but not forgotten: 1991 POS GW Invader. 1976 Donzi Hornet II. 1994 Formula 232 LS. 2001 Regal 2660. 1990 Formula 206 LS. 1992 Checkmate Pulse 186 w/ 2003 Mercury 200 EFI. Random assortment of jet skis.

  13. #24
    Join Date
    Sep 2005
    Location
    Bristol, WI
    Posts
    2,978
    Thanks (Given)
    24
    Thanks (Received)
    104
    Likes (Given)
    760
    Likes (Received)
    592
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Pulse186 View Post
    A 300R is what, 36k if you can find one? (and they aren't getting any cheaper)

    A 300X or 300XS is 10k to 15k?

    I bought 300XS for my Progression because the "upgrade" to a 4 stroke is a bit ridiculous.
    Well **** if I was buying a brand new boat I for sure would want the newest technology available for 15k more. They are 25-32k depending on the versions or who you buy from. It's worth the wait. My dad waited for 10 months for his, im still waiting on mine. I plan on doing a lot of boating. I boated over 200hrs last year, hopefully more this year. $ per hour over the next 5 years, the price difference is nothing. I got rid of my 10 year old technology old school motors. I like new tech, new data systems, cleaner rigging options, more torque, speed, oh and a warranty. Brad is a smart guy, hes been in other cats with the new V8s on them. It's only a matter time before he upgrades.

    Jr.
    Last edited by Speed Jr.; 01-21-2022 at 11:29 PM.
    Larry Gempp Jr.

    Proud HydroStream Powertour Member

    Lots of past boats - 2024 22 Liberator - 450R


  14. Likes Greg G, JasonRS, John S liked this post
  15. #25
    Join Date
    Feb 2004
    Location
    Palm City Fla
    Posts
    7,194
    Thanks (Given)
    0
    Thanks (Received)
    830
    Likes (Given)
    0
    Likes (Received)
    6489
    Mentioned
    13 Post(s)
    Tagged
    1 Thread(s)
    [QUOTE=Brad Zastrow;3326954]
    Quote Originally Posted by Chaz View Post
    So if they command $398.00 for a small hand full of O-rings for a Pro/Max intake. (BTW- I forgive you for not getting back to me on how you .. well you know)

    I have no clue as to what you are saying here. You forgive me for what?
    I thought two things :

    #1) That you had older "twin pancake" Pro/Max powerheads.

    #2) That you were going to get back to me about why it's better to use Merc O-rings to refurbish the laser type injection @ $390.00 a copy ($1170.00) instead of spending $10.00 @ Palm City hydraulics ... for the same thing.
    I even sent you a few groupies to help .. nuttin but crickets

    I "axed" back on the first page about part numbers, prices and availability for the "porky's" .. more crickets. Hope no one needs to fix one if that's how it is ..

    So they had a guy (many) that has broken a prop shaft, they replaced it with another bad one that also broke. Now they came up with a fix .. and they won't fix the guys motors that they put another bad one in. Or even getting around to having enough in stock to "sell" those guys one. Sweet deal
    Price and part # on one of those ... anyone

    Those NIC 2.5's were race only motors. Merc offered no replacement sleeves for those motors .. Must have been throw away blocks in their eyes .. and anyone that used them to joy ride needed to have some on the boat, some in the garage and a few @ U.S.Chrome.

    Lets round it off to 330 HP for a good, 2.5L, 300x and a 4.6L porkchop.

    2.5 = 132 HP / liter .. "mini-brute".

    300x = 110 HP / liter .. 100 per liter is considered average, so a touch above.

    Porky = 71 HP / liter ... Comatose, but for those that wanna taxi-cab, great fit.

    Ray Charles can see that an uninterrupted bore will last longer than one with a bunch of holes in it. That's just common sense.

    2.5L has a 2.300" wide exhaust port ..



    3.0L is only .030" wider @ ..



    Which is gonna be harder on rings ...????

    If it's worth $30,000.00+ to get a new motor with a (as proven) marginal warranty, be one of the cool kids be whisper quiet be above having to smell Klotz oil then maybe buying three porky's might be the thing for you ..

    Chaz = rememberin , when you could buy a house for $90,000.00

  16. Likes Forkin' Crazy, David liked this post
  17. #26
    Join Date
    Apr 2001
    Location
    Illinois
    Posts
    1,560
    Thanks (Given)
    10
    Thanks (Received)
    77
    Likes (Given)
    141
    Likes (Received)
    588
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Those so called 4.6L porkys as you call them weigh only few pounds more than a 300X with 40% more torque use 87 octane and better fuel economy. The world moves forward. I love the 300X but I am very impressed with 4.6L Mercs. So are many of the boat manufacturers. Almost all new boats sales under 35' are with outboards now. That is why the demand has outstripped supply. Add in supply chain shortages (every industry) makes for a perfect storm.

    You forgot to do the math on the 400R, 2.6 Liter 400HP 153hp per liter. The 4.6 450hp is seriously detuned and has been tested at much, much higher hp. I assume the lower unit is what is holding them back from releasing a big fire breathing monster.
    Last edited by Brad Zastrow; 01-22-2022 at 11:47 AM.

  18. Likes Speed Jr., CUDA liked this post
  19. #27
    Join Date
    Oct 2001
    Location
    NE Louisiana
    Posts
    23,506
    Thanks (Given)
    290
    Thanks (Received)
    1200
    Likes (Given)
    18390
    Likes (Received)
    14420
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Brad Zastrow View Post
    Wondering how many hours before rebuilding on the new 300R, 400R or 450R? Having been disgusted in the past with the 2.5 racing series blowing up and rebuilds at 100 hours. I am really happy with my 300X engines as they appear to run about 1000 hours from what I can find out. What does everyone expect or witnessed with the new Mercury four strokes? Any idea on cost to rebuild?
    Isn't that why they call them racing motors? So are you REALLY racing them or just running them until their tongues are hanging out?

    LOL!!! You talked about cars and their high RPMs.. So how long do they stay at peak RPM? Like in a boat?

    I love the Merc 2.5 "race" motors. I have seen 280s live well longer than I expected.

    Go buy some new 4 strokes and let us know.

  20. Likes Stoker boy, mrcrsr liked this post
  21. #28
    Join Date
    Sep 2005
    Location
    Bristol, WI
    Posts
    2,978
    Thanks (Given)
    24
    Thanks (Received)
    104
    Likes (Given)
    760
    Likes (Received)
    592
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Lots of haters on here Brad. The "nothing will ever be better than the 2.5 crowd" always chimes in on on big block or new stuff. I live down the road from a drag strip. This is kinda like the guy in the Dodge Neon who ****s on the guy with the Dodge Viper. The "well his engine is 2x 3x bigger" arguement. Lol. Everyone knows the 2.5 is a poor option for big heavy boats. Brad had triple 280s on his rig. What a pain. Went to 3L' s, they were better. The 4.6L will be much better as they have on ALL the big cats. The expectations of longevity is much higher today than it was 25 years ago. It just bothers some people that others get with the times. There is a reason why there were no 120-130+ mph 6 seater 32-42ft cats cruising around with plush interior and sound systems bumping back then. They didn't have the motors to do it. Just funny the Neon guys would all have Vipers.....if they could afford them. Let's just be honest here......Sounds like 2000+ hours BZ.

    Now the haters in can continue.....

    Jr.
    Larry Gempp Jr.

    Proud HydroStream Powertour Member

    Lots of past boats - 2024 22 Liberator - 450R


  22. #29
    Join Date
    Jan 2006
    Location
    Pompano Beach, FL
    Posts
    831
    Thanks (Given)
    31
    Thanks (Received)
    46
    Likes (Given)
    128
    Likes (Received)
    477
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Brad, having made the switch I can tell you after running and loving the 300x motors I had in the end going with the 400r’s was worth it. I miss the sound of the 2 strokes along with the acceleration but in the end picked up a solid 8-10mph running with a load and fuel mileage is much better with the 400r’s. I averaged 1.5mpg with a best of about 1.75mpg at WOT with the 300x. 400r’s are 2.25mpg with a best of 2.5-2.75mpg or so.
    I do not miss the smoke and cost of 2 stroke oil. I personally have not heard of many broken shafts with 300r’s however there has been more failures with the 400r’s and for the 450’s. Most guys today running tunes on the 400’s making 465-485hp. That IMO is what is causing failures along with someone not throttling the boat and just letting it bang the limiter. In todays time all parts are scarce and hard to get. Mercury is no exception. The one piece shafts have broken some as well but not as often. I agree with Chaz and would not even consider the 300r’s. They will be slower and the torque is only better at low RPM. A properly set 300x will out run them for sure. My old set up was 4-5mph faster on top end than other 308’s that have 300r’s. The 300r’s were faster the 300xs’s though. The best motors for the money IMO are the 400r’s. They don’t break, turn a lot of RPM and with a tune can be as fast as the 450’s. But lastly prices on any of the 4 strokes have gotten ridiculous along with the price of new boats! Just some food for thought

    Double
    Rigged
    308 Skater w/400r’s
    Over-Kill



  23. Likes mikesufka, Brad Zastrow, Speed Jr., Toffen liked this post
  24. #30
    Join Date
    Nov 2019
    Location
    MI
    Posts
    230
    Thanks (Given)
    0
    Thanks (Received)
    15
    Likes (Given)
    2
    Likes (Received)
    144
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Double Rigged View Post
    But lastly prices on any of the 4 strokes have gotten ridiculous along with the price of new boats! Just some food for thought

    But haven't you heard? we all have to get with the times. Silly me that I didn't know I could afford a $35,000 motor, here I am sticking to a budget and buying a crappy old 2 stroke like some backwater hick.


    That was a joke. There is nothing the matter with any of these motors, would love to have a 300R but my bank account told me no.
    2023 Progression 22 w/ 2015 Mercury 300XS. 2018 Kawasaki Ultra LX. 1969 Hustler Wildcat. Gone but not forgotten: 1991 POS GW Invader. 1976 Donzi Hornet II. 1994 Formula 232 LS. 2001 Regal 2660. 1990 Formula 206 LS. 1992 Checkmate Pulse 186 w/ 2003 Mercury 200 EFI. Random assortment of jet skis.

Page 2 of 10 FirstFirst 1 2 3 4 5 6 7 8 9 10 LastLast

Similar Threads

  1. Rebuilding sons 25 hp 2002 merc 2 stroke
    By XstreamVking in forum Technical Discussion
    Replies: 9
    Last Post: 07-11-2017, 09:23 AM
  2. Mercury Tech: '88 Mercury 100 I4. Worth rebuilding?
    By gregpro50 in forum Technical Discussion
    Replies: 3
    Last Post: 06-03-2010, 08:11 PM
  3. Rebuilding 1978 mercury v1500
    By peteil6 in forum Technical Discussion
    Replies: 3
    Last Post: 09-25-2007, 01:28 AM
  4. Rebuilding Mercury Optimax
    By wkwarrior in forum Technical Discussion
    Replies: 2
    Last Post: 05-13-2007, 09:31 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Chris Carson's Marine