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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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could be either, or both.

I would change the jetting to a 155 see if it helps, if it does then you know its the jetting. then fine tune it in...
 

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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.

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Discussion Starter · #5 ·
I do believe I have the stock needle. I bought the rhino used but the carb didn't look like it was touched.

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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.

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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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Discussion Starter · #9 ·
So what do you suggest? Jetting? The cdi has the stock curve and the dynatek fixed curve.

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Discussion Starter · #10 ·
I put in the 155 jet and tried it. Seems to have fixed it but then again its 20 degrees cooler right now.

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U need to put a air fuel gauge on it and see what that's doing up the hills mine was doing the same thing with the alba 686 kit untill I put that on and now I kno what it's doing helps alot if u can't figure it out
 

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Yea jet the needle made a big difference thou well mostly
The clip setting i can't remember off hand what I have in there thou took a while too get its good with the a/f thou it helped
 

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Discussion Starter · #14 ·
The problem was Jetting. Ended up with a 165 main and 45 pilot jet. Thanks to rutting rhino for the jet kit. It came with everything I needed.

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Your welcome and thank you very much we appreciate your business...if you have any more run-ability problems you know where to find me... :)
 

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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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