Just thought I would throw this one out there in case anyone is interested. I've got a week off in September so I'll be pulling the 14BT out of my 40 and rebuilding it with a local engine rebuild shop. I'm normally really slack with photos of work I do, but I'm going to try and document things this time.
I have already sourced a rebuild kit specifically for a 14BT from a company in the UAE called 'MagEngines', I was amazed a the speed of delivery actually. The rebuild kit is Japanese from a company called 'KA Pistons' and includes liners, pistons and pins (specifically for a 14BT/not 14B), main and conrod bearings (TAIHO brand), rings and a full gasket set.
I am rebuilding it for a few reasons. Firstly, I have absolutely no idea of the mileage on the engine (Japanese import), so I guess peace of mind having rebuilt it is one aspect. I have also had some dramas with it since purchasing the 40 in January this year and previously rebuilt the head. Whilst I had the head off I noticed that the piston liners were very smooth (not cross hatching at all), and it has a bit of blowby (not excessive, but still a concern), so I figure a rebuild is in order. I did a bit of a write up of the dramas I've had in the 40 section which you can have a read here if you are interested: Frankenstein J40. I have since fabricated a new intake pipe system out of stainless and added a front mounted intercooler.
The engine is not bad after sorting out the injection pump timing issues, but its not 100% yet, which is another reason for the rebuild. This time I will not only be reconditioning the engine, but the injection pump as well. I'm considering going to a GTurbo later, but am still thinking about this. I have FSMs for just about every other B engine, but the elusive 14BT FSM still evades me (anyone have a copy?). I figured out that Yamaha released a marinised version of the 14BT called the 'ME372sti', which I have found a FSM for. I think between the FSMs that I have we should be able to sort everything out.
Anyway, hopefully it can be of assistance/interest to someone else when its done. I'm hoping to pull the engine and rebuild on my week off, but we will see what happens.
Cheers
Kit
I have already sourced a rebuild kit specifically for a 14BT from a company in the UAE called 'MagEngines', I was amazed a the speed of delivery actually. The rebuild kit is Japanese from a company called 'KA Pistons' and includes liners, pistons and pins (specifically for a 14BT/not 14B), main and conrod bearings (TAIHO brand), rings and a full gasket set.
I am rebuilding it for a few reasons. Firstly, I have absolutely no idea of the mileage on the engine (Japanese import), so I guess peace of mind having rebuilt it is one aspect. I have also had some dramas with it since purchasing the 40 in January this year and previously rebuilt the head. Whilst I had the head off I noticed that the piston liners were very smooth (not cross hatching at all), and it has a bit of blowby (not excessive, but still a concern), so I figure a rebuild is in order. I did a bit of a write up of the dramas I've had in the 40 section which you can have a read here if you are interested: Frankenstein J40. I have since fabricated a new intake pipe system out of stainless and added a front mounted intercooler.
The engine is not bad after sorting out the injection pump timing issues, but its not 100% yet, which is another reason for the rebuild. This time I will not only be reconditioning the engine, but the injection pump as well. I'm considering going to a GTurbo later, but am still thinking about this. I have FSMs for just about every other B engine, but the elusive 14BT FSM still evades me (anyone have a copy?). I figured out that Yamaha released a marinised version of the 14BT called the 'ME372sti', which I have found a FSM for. I think between the FSMs that I have we should be able to sort everything out.
Anyway, hopefully it can be of assistance/interest to someone else when its done. I'm hoping to pull the engine and rebuild on my week off, but we will see what happens.
Cheers
Kit