daveb83
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| posted on 1/12/13 at 04:39 PM |
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96 Fireblade 919 gearbox repair
Ive got the issue with second gear whereby it jumps into neutral, worn dogs im guessing from searching.
Ive seen a few things which suggest i would also need to replace 6th as they inter link, and im sure ive also had it when its jumped into neutral from
6th or at least failed to shift properly.
My plan is over the winter to get the issues sorted, however, having never worked on a bike engine before, and reading workshop manuals etc, its
looking like quite a big involved job.
Ive had a quote from a local bike garage of £400 plus parts. What i really want to do is have someone with experience of this kind of work letting me
do it under their supervision so that i can learn for myself.
Firstly, does £400 plus parts sound like a reasonable price?
How much realistically would i be looking at for the necessary parts for this job?
And finally, can anyone recommend a garage/workshop/engine builder close to Preston, Lancashire, that would ideally allow me to do it supervised?
Many thanks
Dave
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mrnoluck
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| posted on 1/12/13 at 09:30 PM |
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919 gearbox
Hi mate, I would ask Andy at AB Performance, he based in Suffolk but he has always sorted my 919 Fireblade issues and he charges a fair price.
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luke2152
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| posted on 2/12/13 at 02:03 AM |
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Far from being an expert but i rebuilt a fireblade 929 engine and box last year. Gearbox is pretty simple once the engine is on the bench and cases
split. I think gears were £100 each new. And replaced bearings and seals was about another £100
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Ashley Jenkins
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| posted on 2/12/13 at 06:31 AM |
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I have just repaired the gearbox in my blade 954. I was quite daunted about doing the job as I have never opened up a bike engine before but with the
service manual it's honestly not that difficult as long as you keep everything clean and lay in out logically. It was pretty much a case of:
Remove engine from car and get on to a stand/bench
Drain oil
Turn engine upside down
Remove sump
Remove lower casing bolts
Remove water pump (to get at a last bolt)
Turn engine up the right way
Remove upper casing bolts
Split the cases
Lift out the main shaft and countershaft
Disassemble shafts/replace damaged worn components
Re-fit in reverse order
The fault my car developed was it would not stay in fourth. If you were to select fourth then press the throttle, the bike would jump out of gear and
fall back into 3rd.
Cost wise, it's hard to say until you have a look.
I decided to replace everything that was worn so I knew I had a decent box, to future proof it to a degree and to know that I wouldn't be doing
the job again in 2 months.
I replaced the shift drum, 3 shift forks, 5 gears and the stretch bolts for the crankshaft bearing caps - it cost me give or take £1000. On top of
this were a few specialist tools, a 3/8 torque wrench capable of 10nm and an angle gauge.i also found that when the clutch was out the springs were at
the service limit, and the discs and plates were nearing the end of they're life too, so a clutch kit too which I think was £150.
If you were closer, I'd offer to help because after having done it myself I realised that it's not difficult and actually really
enjoyable. It's nice to take a step bac and think, I fixed that. I'd love Andy bates job haha.
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ReMan
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| posted on 2/12/13 at 08:33 AM |
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As said here, it's a common problem, even before the engine ghas been in a car as second gear tends to get hammered on a bike to with an
enthusiastic rider. It's not that difficult and there's no mystery. Manuals are out there too.
But, it is going to cost and you can soon rack up the cost of a replacement engine if your fitting a bunch of new parts, but that can be a gamble too!
I've been lucky as I boug=ght 2 blown engines with good boxes when mine failed. Theres one on ebay fror £300 at the moment
[Edited on 2/12/13 by ReMan]
www.plusnine.co.uk
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daveb83
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| posted on 2/12/13 at 09:45 AM |
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Thanks for all the advice guys, really appreciate it, the reasoning behind wanting to repair rather than just replace is the gamble of an unknown
gearbox/engine and possible having to do the same again a few months or so down the line, to quote previous post "future proof myself"
I'm thinking of just going for it myself with the manuals, and if I get really stuck then letting the pros have it in bits... Hopefully
wouldn't come to that though
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Ashley Jenkins
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| posted on 2/12/13 at 10:16 AM |
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That's something I spent a week or two deliberating over. Do I buy a new engine, with potentially the same problem or do I repair my gearbox and
know that it's good? After a couple of quite lengthy phone calls to Andy bates I decided to go with the latter because at least that way
there's no gamble, even if it does cost more.
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