Viper Cdi On A 01-02 Srx. 3:16

I mistakenly tried to trail ride with one with pyros, not good, had to run 165 mains, to keep it at 1275. This is at 7inches from piston. for drag racing, the cdi worked great. had no problems with the cpr piped and ported viper with heads. My cylinders were stock viper with cut srx heads, stock srx exhaust.
just a comparison to show how much temperature is added with less timing, temperatures with 150 mains with srx cdi would put the temps climbing over 1400. This is why they say, never trust your pyros till you have confirmed with piston wash.

It is a great drag race only mod but dont run it past the 5-600 mark.
 
VIPER BOX ADDS TIMING OR LESS TIMING ? NOT FOLLOWING YA HERE. YOU USE SRX BOX ON YOUR VIPER ? 3:16 (yammie tony)
 
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I had the first srx piped viper. viper box has more timing. More timing means fires more before tdc so it puts more fire on top of the pistons, srx timing is later and the fire is more out the pipe, thus the extra pipe heat without burndown.
someone might correct me on this but I think the box is 8deg more timing. allen or don might remember.
 
YAMMIEGOD3:16 said:
VIPER BOX ADDS TIMING OR LESS TIMING ? NOT FOLLOWING YA HERE. YOU USE SRX BOX ON YOUR VIPER ? 3:16 (yammie tony)
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Adds alot of timing! I Think its about 8 degrees more timing vs. srx over 8000 rpm's? = not trail frendly.. Oops!You beat me to it BETHEVIPER! :o|
 
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I have a 02 aaen piped viper, strictly trail ridden, occasional lake run. Do you guys think i should run a srx cdi, I don't want to smoke it as it's not mine, just a freind of mine. He likes to hold it wide open, thats for sure. Currently clutched to run 9,100 rpm. any thoughts would be appreciated.
 
I think the SRX CDI may not have enough advance timing for these pipes at 9100 as the curve drops off rapidly after 8500 rpm and performance will surely suffer.
One reason the SRXs work so well is the pipes, porting, and CDI were all matched as a package to run at the 8400-8500 rpm range for max power.

JM.02c

Bob
 
sideshowBob said:
I think the SRX CDI may not have enough advance timing for these pipes at 9100 as the curve drops off rapidly after 8500 rpm and performance will surely suffer.
One reason the SRXs work so well is the pipes, porting, and CDI were all matched as a package to run at the 8400-8500 rpm range for max power.

JM.02c

Bob
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I'll second Bob's post, the Viper triple pipes are designed with the Viper timing in mind, properly jetted and clutched they work great. For trail riding I wouldnt second guess triple piping a Viper. Reason I went with an SRX CDI is because my Viper is eccentially a SRX motor between the SRX pipes and porting.

Viper CDI on a SRX, in my opinion, would be a race only mod, not something for the average trail rider
 
ottawaair said:
I have a 02 aaen piped viper, strictly trail ridden, occasional lake run. Do you guys think i should run a srx cdi, I don't want to smoke it as it's not mine, just a freind of mine. He likes to hold it wide open, thats for sure. Currently clutched to run 9,100 rpm. any thoughts would be appreciated.
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Jeff, @ 9100 I think the viper cdi has backed off a good amount of timing. That's part of the reason that AAEN designed them pipes to run @ 9100-9200......so you're past the "hot" part of the timing curve.
 
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