Mariner 115/135 interchangable parts ?

paddlers · 20 October 2012, 16:58

Hi, just had my 115 4 cylinder ruined by Pennine Marine whilst in for a service (still cost me £470 to get it back) and I'm in the process of purchasing a Mariner 135 V6. Both engines are @ 1990 & I'm curious if they share many of the same parts ie gearbox/tilt etc ?

gasman · 20 October 2012, 18:18

[QUOTE=paddlers;494957]Hi, just had my 115 4 cylinder ruined by Pennine Marine whilst in for a service (still cost me £470 to get it back) and I'm in the process of purchasing a Mariner 135 V6. Both engines are @ 1990 & I'm curious if they share many of the same parts ie gearbox/tilt etc ?

What did they do? I dropped mine off yesterday!!
Ian

paddlers · 20 October 2012, 18:30

Adjusted the timing and forced one of the pistons to clip a port ruining the bore . Sadly denied any liability, charged me the full price plus £45 +vat to strip the engine to find out what they'd broken & returned it to me in a number of cardboard boxes.
To be honest I'm a bit disgusted as they've made no effort to resolve the situation. Funny how it went from 'running really well' to pile of junk !!!

Needless to say my custom will be going elsewhere. Good luck with yours, I think it depends on who's in the workshop at the time ?
At least I now have a few boxes of spares.........

Turbodiesel · 21 October 2012, 07:14

Quote:

Originally Posted by paddlers

Adjusted the timing and forced one of the pistons to clip a port ruining the bore . Sadly denied any liability, charged me the full price plus £45 +vat to strip the engine to find out what they'd broken & returned it to me in a number of cardboard boxes.
To be honest I'm a bit disgusted as they've made no effort to resolve the situation. Funny how it went from 'running really well' to pile of junk !!!

Needless to say my custom will be going elsewhere. Good luck with yours, I think it depends on who's in the workshop at the time ?
At least I now have a few boxes of spares.........

What do you mean by they adjusted the timing and forced a piston to clip a port? i dont understand how that is possible?

Festinghouse · 21 October 2012, 08:18

personally, i dont think that is possible. think that is just bad luck. at a guess id say that sounds more like a broken piston ring thats has come away and gone between the piston and cylinder wall, if indeed something has 'clipped' a port.

paddlers · 21 October 2012, 08:25

Evidently if you advance the spark too much it forces the piston sideways ! Had a thread running 'engine destroyed, what next' on here with more detail about how it can occur, The engine was running perfectly other than a fuel leak that required new float needles that I knew about, had 2 weeks out every day in August so I was only really wanting the carbs sorted & a service . I've no idea why they felt it was neccesary to mess with the timing as it pulled really well !!!

Turbodiesel · 21 October 2012, 20:52

Quote:

Originally Posted by paddlers

Evidently if you advance the spark too much it forces the piston sideways ! Had a thread running 'engine destroyed, what next' on here with more detail about how it can occur, The engine was running perfectly other than a fuel leak that required new float needles that I knew about, had 2 weeks out every day in August so I was only really wanting the carbs sorted & a service . I've no idea why they felt it was neccesary to mess with the timing as it pulled really well !!!

But surely that would take quite a few hours worth of running for that to happen. Not trying to take blame from the dealer or anything, but i just cant see that adjusting the timing would cause this kind of fault? I might be totally wrong of course

but i thought changing timing causes problems like pre ignition causing detonation and the top of the piston falling apart etc. Im just interested as i have never heard of this kind of problem.

paddlers · 21 October 2012, 22:59

The problem with this whole thing is the only ones that know for sure are the people who worked on the engine that afternoon. I used it every day for 2 weeks in all sorts of conditions waterskiing & a few full power runs out to fish & it never missed a beat. Ran smoothly & strong. When they called me about adlusting the timing they said it was all sorted.
There's a thread on here about re-boring where this exact scenario takes place if the sparks advanced too much & ignites the fuel too early forcing the piston sideways into a port. If you were to look at the piston/cylinder that's just what happened! I'm no engineer but something's not right & to be honest I found the owner to be very evasive !!

Boats&Outboards · 22 October 2012, 07:21

Quote:

Originally Posted by paddlers

The problem with this whole thing is the only ones that know for sure are the people who worked on the engine that afternoon. I used it every day for 2 weeks in all sorts of conditions waterskiing & a few full power runs out to fish & it never missed a beat. Ran smoothly & strong. When they called me about adlusting the timing they said it was all sorted.
There's a thread on here about re-boring where this exact scenario takes place if the sparks advanced too much & ignites the fuel too early forcing the piston sideways into a port. If you were to look at the piston/cylinder that's just what happened! I'm no engineer but something's not right & to be honest I found the owner to be very evasive !!

On the flip side, my 4x4 was running great for the last year until one day it decided to blow its gearbox, that had just been fully serviced and MOT'd too by the main dealer. Sometimes it just happens.

Peter @ Boatsandoutboards4sale ~ askboatsandoutboards4sale@sky.com ~ 07930 421007

Downhilldai · 22 October 2012, 10:36

The 4-cyl motor has a different lower unit to the V6