trail porting or 780 big bore?

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xviperx7

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i was hoping someone could help me i have a 2002 yamaha viper w/ v force reeds slp triples on it but was looking for a little more hp i was wondering which one was a better addition the 780 big bore kit or the trail porting pros and cons and anny additions i would have to make if i added one of these kits thanks :nos: :2strokes: :letitsnow
 
you will get more hp from a 780 big bore, but it costs more too. how much do you want to spend? i have my viper ported, and it helped it out some. i did it myself, so it was real affordable. :) for the more "average" trail guy looking for a little more, i would suggest the porting. the big bores are expensive to purchase, expensive to repair, if something goes wrong, and need a little more attention, than a stock bore ported/piped viper. also, seeing you have slp pipes, send your cylinders to slp and let them work their majic. i'm sure their port job, works real good w/their pipes......they claim 7.1hp gain. just my .02
 
who makes the best Viper Triple pipes? is the extra rear heat exchanger and opticool head gasget needed? Are they reliable when you pipe them?
 
ViperTime said:
who makes the best Viper Triple pipes? is the extra rear heat exchanger and opticool head gasget needed? Are they reliable when you pipe them?
Click to expand...

yes, the rear heat exchanger and opticool head gasket, are a must for triple piped vipers. the rear heat exchanger should be added to even a stock viper. piped vipers can be as reliable as stock, if setup properly. as far as the best triple pipes, you're going to get opinions on that one. i personally have aaen pipes and they work fine. if i was to do it over again, i would get ceramic coated slps.....6-7 more peak hp and ceramic coated.
 
mopar1rules said:
yes, the rear heat exchanger and opticool head gasket, are a must for triple piped vipers. the rear heat exchanger should be added to even a stock viper. piped vipers can be as reliable as stock, if setup properly. as far as the best triple pipes, you're going to get opinions on that one. i personally have aaen pipes and they work fine. if i was to do it over again, i would get ceramic coated slps.....6-7 more peak hp and ceramic coated.
Click to expand...
thanks mopar
 
ViperTime said:
who makes the best Viper Triple pipes? is the extra rear heat exchanger and opticool head gasget needed? Are they reliable when you pipe them?
Click to expand...




i would go with slp they add 30+ hp a 8700 rpm and help midrange as well i am extremely happy with them.
 
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