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Discussion Starter · #1 ·
Ok so I just put on a 686. Heres what I have:
-686 kit with DLC wrist pin
-Uni intake
-Raptor stage 2 cam
-dynatek programmable ignition on curve 3
-160 main and 50 pilot jets

Rhino runs great on a level street, once going up a hill it bogs loses power and starts to get warm. Is it the timing or the jetting???
 

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IMO it's a mistake to get a programmable cdi for a 660 unless you are running at least 12:1 compression on race gas or ethanol...and imo you would certainly be wise to have an a/f gauge...

What do you mean by uni intake...


Put the stock cdi back in it or an aftermarket with fixed ignition curve until you know what you have...

If you need jetting we have the best jet kit(s) you can get...

Hopefully you are using the stock needle in the stock position...
 

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Discussion Starter · #4 ·
I have a uni filter attached directly to the carb. I also have a 11:1 piston and was told that a fixed aftermarket cdi will make it ping in warm temps with pump gas. I already bought your jet kit. I can change the cdi to the same curve as a dynatek but don't want to seeing it was 100 degrees here today.

Sent from my Desire HD using Tapatalk
 

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I have a uni filter attached directly to the carb. I also have a 11:1 piston and was told that a fixed aftermarket cdi will make it ping in warm temps with pump gas. I already bought your jet kit. I can change the cdi to the same curve as a dynatek but don't want to seeing it was 100 degrees here today.

Sent from my Desire HD using Tapatalk
Good that you have stock needle... if you are my customer you have me email right I don't know you by your username...

The filter attached to the carb is a problem...

You can't go wrong with the stock cdi... you are not going to get detonation with that...

Sending you a pm...
 

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Okay that is not as bad as it sounded...

That is not the air filter clamped on carb...it has an intake tract and vent connected to diaphragm...

Not on par with mine by any means but some people clamp a filter onto the carb and another filter on the vent...all bad imo...
 

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x

now put the programmable cdi back in and set it on curve 3 or you will ping that motor to death!!!!!!!!!!!.............trust me you need the low setting with 33degrees of total advance............stock cdis are set at 38 which will kill that new piston and your head......you will make more power with that aircleaner than with the stock set up,you will make even more power if you get rid of that boot between the carb and the filter, ran them all on dynos to prove my point..........just service the airclean after every ride and check your oil the same,it will live and be clean and happy...........
 
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