Going well

[Johnny]

Are the gears easy to replace?

I'm not an expert mechanic, however I can figure most things out. It does not help there is no manual!

If I was to get a garage to swap them, would it be a costly job?

Also I have the sp cams. Does this increase performance? and once again would this be a costly job to swap?

thanks

[stripes1976]

list the items you want swapping and i'll give you an idea of new parts needed. and tools required. and times it would take.

[Variablevalves suck]

list the items you want swapping and i'll give you an idea of new parts needed. and tools required. and times it would take.

Seems obvious to me wot he wants to swop!
The gear box is a fairly labour intensive job and requires the motor to be dropped and the the clutch side of the motor removed, then the crankcase halfves split to allow the box to be swopped- gaskets needed are sump, LH and RH case and tools needed are clutch and flywheel holding tools that can be made at home.
Cams can be changed with the motor in place and is a simple job so long as you got some mechanical know how.

[stripes1976]

list the items you want swapping and i'll give you an idea of new parts needed. and tools required. and times it would take.

Seems obvious to me wot he wants to swop!
The gear box is a fairly labour intensive job and requires the motor to be dropped and the the clutch side of the motor removed, then the crankcase halfves split to allow the box to be swopped- gaskets needed are sump, LH and RH case and tools needed are clutch and flywheel holding tools that can be made at home.
Cams can be changed with the motor in place and is a simple job so long as you got some mechanical know how.

And you've still missed parts out that he will need that cannot be reused. also cost of a shop doing it. i build these with my eyes shut!

[stripes1976]

its £116 just to split the bottom half if your going to do a bottom swap properly without replacing selector forks.

[Johnny]

What performance increase would the sp cams give, also what else would need changing?

[stripes1976]

i havent got the dyno sheets to hand at the minute but i will find them. there is nothing in it between std cams and sp cams power wise. only difference really is the power is made higher up. literally couple of hp in it. If your on the road or tight circuits the std cams are better. I saw better increases when the sp carbs, cdi and loom were used too

[Variablevalves suck]

list the items you want swapping and i'll give you an idea of new parts needed. and tools required. and times it would take.

Seems obvious to me wot he wants to swop!
The gear box is a fairly labour intensive job and requires the motor to be dropped and the the clutch side of the motor removed, then the crankcase halfves split to allow the box to be swopped- gaskets needed are sump, LH and RH case and tools needed are clutch and flywheel holding tools that can be made at home.
Cams can be changed with the motor in place and is a simple job so long as you got some mechanical know how.

And you've still missed parts out that he will need that cannot be reused. also cost of a shop doing it. i build these with my eyes shut!

Forgive me stripes for it reading like i was pissy when actually i jumped on the laptop in a hurry inbetween my mates fag brake- trying to build his race bike for Darleymoor, so aceept my apology for seeming bollshee!
Your right John would need the oilseals and a couple of circlips, but dont you think the hardest job is dropping the motor? after that its not to hard to do the gears if johns got a few good tools and if it goes to a dearler their eyes will flip over £ signs.
With you having the SP motor you could have a play about with that and- May as well strip it down and box it up if you need the cams as well- get the dealer to just pull the flywheel/cltcuh and do the rest yourself.

[stripes1976]

thing is knowing how heavy the sp box is on the output shaft bearing. i would definately change the bearing. Its not cheap to change it and a complete pig to do. gaskets and seals and if i was splitting the bottom halves the sealant is £28. and checking the bearings for wear too wouldnt go amiss. Anyway if it was me building a track bike i would definately use a std box for the track with std cams for better drive out of the corners on tighter circuits. definately where you'd better your times. Now if it was being built for the likes of the old f3 tt series in japan which is why the sp box was developed then i'd use all sp bits. (japanese tt formula 3 was dominated by the 76a for 4 years in a row by the suzuki team)

dont worry mate we all say things out of context from time to time