4 strokes
Submitted by Nath79 on Thu, 2015-06-04 18:33
hey just want some feedback from anyone with older 4 strokes what brand how old an any thing you've had fixed on them how many hours , just want get an idea of reliability and which most cost effective , any info be appreciated as I've had only 2 strokes an my currant motors are coming up 35 yrs old pretty good really
ta nath
holth
Posts: 812
Date Joined: 09/10/06
Had a 04 75hp merc 4 stroke
Had a 04 75hp merc 4 stroke which lve only replaced 4 months ago after it blew a head gasket.
Bought boat and motor 5 years ago with 230hrs on it and in that time l put 800 plus hrs on it.
Only thing needing replacing in that time was a regulator/rectifier and a trim switch. Motor ran flawless for over 1000hrs. Problem l suppose is what you cant see inside motor. Internal Corrosion probably killed it over time even though it was flushed religiously.
Replaced with a new 90 suzuki.
Rob H
Posts: 5744
Date Joined: 18/01/12
2003 Yam F115 with about
2003 Yam F115 with about 500hrs, faultless other than a minor Throttle Position Sensor (TPS), fixed with multimeter in 10 minutes.
2005 Suzuki DF115's x 2, 700hrs. Stuck thermostat gave an overheat alarm, replaced them and the steel plugs in exhaust with alloy ones-faultless otherwise.
Both of these particular models are probably the longest serving 4 strokes built (F115 was built for 14 odd years and just superceded)
Give a man a mask, and he'll show you his true face...
The older you get the more you realize that no one has a f++king clue what they're doing.
Everyone's just winging it.
ranmar850
Posts: 2702
Date Joined: 12/08/12
F series yamahas
Will do 4000 to 5000 hrs in commercial service when they are running regularly (and hard) Sitting around for months on end not running will send anything to an early grave, and doesn't this describe most outboards on rec boats? Gearboxes will wear first, around 2000 hrs will probably see a rebuild necessary, but they are cheap compared to a motor replacement.
1000 hrs is nothing on these motors if serviced correctly (big IF)
holth
Posts: 812
Date Joined: 09/10/06
If your looking at upgrading
If your looking at upgrading to a 4stroke and concidering a second hand motor l would say save your money till you can afford a brand new motor.
I concidered a second hand motor 80 to 100hp but when there asking 8/10k plus fitting for a 6/7 year old motor that could have hidden problems, no service history it didnt make sense $$$s wise. I got a brand new 90 suzuki fitted for 13k. Best thing l did. 5 year warrenty piece of mind.
Nath79
Posts: 15
Date Joined: 03/06/15
Thanks guys will only look
Thanks guys will only look at new anyway , between Yamaha an Mercury at moment but gettin good news on Suzuki just they bout 10 kg heavier
Coastrunner
Posts: 414
Date Joined: 25/10/14
780 hours
Only replaced a water pump impellor, thermostat and housing on yammy F60, 1000 hour service will be a big day out with timing belt and valve clearances due. BOAT=Bring On Another Thousand
cruzy111
Posts: 274
Date Joined: 08/10/13
2007 yammy f60
Ive got a 2007 yami 60efi. 2200hrs still going strong. Service myself new oil and filter,fuel filter and gear oil every 100hrs religiously,around 50 dollars oil and filter,fuel filter around 50 dollars. Every 300hrs I replace the water pump I buy a whole kit costs around 90 dollars. Spark plugs at 300hrs around 30 dollars. I take it to the local outboard mechanic to do the timing belt at 1000 hrs cost I think 300 dollars to change and do valve clearances. Flush every time on muffs till warmed up, found using hose connector did not flush properly and thermostat plugs up. Never flogged it sit on around 4300 cruising.
Jetpower
Posts: 83
Date Joined: 09/06/15
Hey Nath, the used Yamis do
Hey Nath, the used Yamis do tend to hold their value very well, but I would recommend having any used unit checked by an independant marine technician for your own peace of mind. We just sold a 2003 F50 with 500 hours for 4K fitted, so it really depends on the condition of the engine, sevice history etc. Also if you are buying from a dealer, ask if they will warrant the motor.
What size engine do you need mate?
Cheers, Stew.
www.jetpoweryamaha.com.au
29 Automotive Drive, Wangara WA 6065
08 9409 4644
Nath79
Posts: 15
Date Joined: 03/06/15
Re
thanks stu chasing twin 100 to 90 four strokes poss 115 but depends on weight an price an with what controls as there few options with Yamaha
regards Nath
an I not chasing second hand just want know if new technology stand up as my 2 strokes are 35 yrs old an I think the oldest 4 strokes r only been round since 2000 mayb
ta
Jetpower
Posts: 83
Date Joined: 09/06/15
Hi Nath, sorry have'nt been
Hi Nath, sorry have'nt been on the forum for a little while, tied up with a tender submission.....joy!!
I guess time will tell re the longevity of the newer 4-Stroke engines, only been around (Yami wise) since 1999, so I guess we'll have to wait another 20 years to find out!
Certainly in terms of hours they seem to stand up quite well, we see many commercial engines with 2,000 to 3,000 hours and still running strong.
Cheers!
www.jetpoweryamaha.com.au
29 Automotive Drive, Wangara WA 6065
08 9409 4644
Perry Home
Posts: 434
Date Joined: 07/10/10
HONDAI've had 2x50 hp a 115
HONDA
I've had 2x50 hp a 115 hp and 2 90hp some brand new some second hand. Not had a single prob with any and these have all been carbie models so latest efi would only be better. I haven't purposely bought that brand. .. just when deals have arisen that's what's been available. Couldn't be happier but I'd suggest alot of 4 stroke motor owners will twill you the same. If i had my cove for current boat Id go Suzuki 140... chain driven .. ultra reliable. My 2 cents for ya. Cheers Pez