Really admire your work, Fantastic!
Looking thru the pictures and comments and it`s very educational,but I wonder if it would be possible to just use the XT flywheel/stator? Would it really matter that stator fill up the cavity instead of taking the bother of making the spacers?
Just qurious,as I am in the mind state of doing something similar,thanks to this thread.I have now used hours reading of big bore raptors and other kind of tuning tips "over there"....

The only way that the xt stator & flywheel will fit is to send the xt crankshaft to DL and have it stroked at a cost of $1200 + shipping.
The raptor crank is not the same on the flywheel side as the xt and stator & flywheel will not fit, also a new hot rods +5mm is about $300 and DL can supply 2nd hand parts total cost deleverd $650.
The mods are well worth it you will love the extra power.

Thanks Kris, another question to erase from the list..
If you where supposed to do the mod again,what would you do different? Like compression ratio , bore size etc...
I mean there is a big increase in both bore and compression ? how you think this will affect the engine in the longer terms?
what is your opinion off doing a longer stroke and reduce the comression ratio compered to your mod ?
But most important, are you still happy with this beast off a XT?
regards
Per

Very happy,
And I would build another in a minute it is a totally different bike just turn the throttle and its on the back wheel no clutch needed.
Things to keep on top of, compression ratio will increase with a stroker crank and it needs to be kept under 12:1 to run pump fuel (here in Australia the pump fuel is rubbish)
I would get the xt crank stroked next time to 8mm and a 105.5mm CP piston/barrel will make 804cc and run the xt flywheel & stator.
The DNA Stage 3 air box is a must.
And the clutch needs a lot of work to hold the power but it can be done, mine holds now.
The gear box is a worrie, will it hold ??? Ok so far.
And more, if you get serious about doing one let me know and I will help you out. But beware of :gsmile:

Thanks again Kris,
second time now when trying to post my reply,I was logged out during my writing and my message went missing.
Try short now and come back later,with more to ask :)
Bedtime work tomorrow morning..
Per

Hi Kris!

I apologize in advance for my bad english))

I have several questions for you:

1. You changed the balance shaft or it native?
2. Strongly to change the thrust at low engine speeds?

I need to replace the crankshaft in the engine. The cost of the original crankshaft - insanely huge (due to dollar exchange rate), and the value of the crankshaft from the raptor - much nicer.

So I'm trying to understand how much really to transplant the crankshaft from the raptor in the T�n�r�. And how much will all this construction is reliable and stable

Thank you in advance for your reply and good day!

Hi Korrh
Why do you need to replace the crankshaft ? Big end - connecting rod damage ? or crankshaft badly damaged - broken ? or want to stroke it ?

If its just a connecting rod there are kits available to repair.

If you change the Crankshaft (to a Raptor 700 type) the balance shaft remains the same, but you will also need to change to the Raptor 700 flywheel, stator & pickup plus mods to the mounts of the stator and change the stator connector plug, but the big problems are with the starter gear/clutch major mods needed you will need to use both the XT and the Raptor 700 gears, the centre needs to be removed from the xt gear and welded to the raptor gear a very delicate job.

It dose become a little jerky down low it the revs because the Raptor flywheel is about half the weight of the xt flywheel, the engine will rev much quicker though.

It is a very big job and well worth it if your looking to stroke it maybe not if your going to go the same stroke.

Sorry for the delay in replying

Kris