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Discussion Starter #1
I currently have a 98 FIII 700 with some work on it. I've
got a chance to buy a complete (w/o carbs
) 1999
Mach 1 mill. Besides supposedly correcting the oiling issue
to the PTO crank bearing, what other differences are there
betwene the 98' & 99' Doo 700 triples?  Thanks  
 

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I think there are probably the same differences as between the machZ and FIII...different clutching, jetting and RAVE springs.
 

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Discussion Starter #3
My 98 is piped already and I've got the 98 Mach 1 carb
set-up with the Mach 1 rave springs. I'm wondering if the
jugs, head, crank and case are the same. Clutching is still
a little bit of a mystery since I put in the Thunder shift
arms.
 

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Maluchm:

There are a few diffrences.  

There is a higher quality grease used in the far bearing (PTO i think)  With this grease and the bigger oil jurnals the 99 700 loses the crank bearing problems that plaged the 98.  

There are also a few more diffrences some i think are bottom end enlarged, Bigger water pump, but im not sure so maybe someone else can clerify this.
 

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from my experience(owned a 98 F-III700) 98 doo 700's sux'd.  they were nothing but lemons, and you hardley ever see 99 700's mess up so, that should be all the dif you need.    if you can get the other motor cheap buy it and sell the 98 motor.
 
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