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Discussion Starter #1
Few questions for you; What is the Difference
in models on the (tripple) 97xc and 97xcr, and what is there rated engine HP?
 

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This is a very confusing subject but it does have an explanation to why there are 2 types of triple xcr's.

First there was the XLT - monoblock triple 600 with single pipe and VM 34 carbs piston port engine.

Then Polaris developed the First generation XCR 600. they took the existing monoblock XLT, added VM38 carbs, more aggressive porting, and then came the first XCR 600's. Infact the engine cover still read XLT. Made just over 100hp.

When Formula 3 racing became popular in 96, (FIII racing was 600cc triple pipe), Polaris did not have a factory Triple pipe 600 like Ski-doo of Arctic Cat ZRT, So they scrambled to make one. They took they Ultra 680 which was a case reed base, and sleeved it down to 600cc. They then added the Storm pipes to it.

These came out with the designation XCR 600 sp (special)

So in 96 they had the XCR 600 - wedge chassis single pipe piston port XLT engine
And the XCR 600 sp - Aggressive chassis, triple pipes, case reed motor. peak was about 120 hp

In 97, They produced the same XCR 600 in the wedge chassis but droped the R (R was for racing models) So this was know as the XC 600. Monoblock single pipe engine

They also released the XCR 600 se (special edition). This was the previous years XCR 600 sp with better pipes, jetting, CDI, clutch setup. Case reed triple pipe engine.

In 98, They dropped the Monoblock engine XC for a twin. So the 98 XC 600 is a twin, whereas the year before it was a triple. It still remained in the 11 year old Wedge style chassis.

Also that year they droped all the fancy terms (sp, se) and simply called the case reed triple pipe sled the XCR 600.

To sum it up,

A 97 XCR 600, when properly setup can have as much as 120-122hp.
A 97 XC 600, when properly setup can have 104-106 hp.

97 XCR 600 - aggressive chassis
97 XC 600 - wedge chassis

97 XCR - Triple pipes
97 XC - single pipe

97 XCR - case reed
97 XC - piston porting

Hope this answers your questions.
 

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Discussion Starter #3
Thanks!, Many questions now known. -JB
 
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