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Old 09-27-2006, 04:51 PM   #6256
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Quote:
Originally Posted by Speedbug
We went and raced at the Pre worlds in Feb this year, and used the same fuel. It was Runnertime 16% and it is awesome fuel. The only problems we experienced was when we got back home and changed back to normal fuel.
what happend when you got back home.
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Old 09-27-2006, 04:55 PM   #6257
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Some of the guys experienced difficulty tunig the engines back on our normal fuel. The engines were very erratic at low RPM, and taking a long time to settle at idle, ie as if they were running too lean but they weren't.
The only fix seemed to be a complete rebuild, now they seem to be running fine. The engines are Sirio EVO3's.
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Old 09-27-2006, 05:00 PM   #6258
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Quote:
Originally Posted by Speedbug
Some of the guys experienced difficulty tunig the engines back on our normal fuel. The engines were very erratic at low RPM, and taking a long time to settle at idle, ie as if they were running too lean but they weren't.
The only fix seemed to be a complete rebuild, now they seem to be running fine. The engines are Sirio EVO3's.
i was just being a smart a#$ i know what your probs would be and with the sirios this is more so,there just to damm fast
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Old 09-27-2006, 05:02 PM   #6259
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Yes they are quick, that's for sure.
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Old 09-28-2006, 01:34 AM   #6260
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Quote:
Originally Posted by Speedbug
Some of the guys experienced difficulty tunig the engines back on our normal fuel. The engines were very erratic at low RPM, and taking a long time to settle at idle, ie as if they were running too lean but they weren't.
The only fix seemed to be a complete rebuild, now they seem to be running fine. The engines are Sirio EVO3's.
it would have been better to keep using runnertime than to rebuild
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Old 09-28-2006, 04:00 AM   #6261
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To be honest i dont think that the runner time was the problem. I have been chasing a problem where my engine wont return back to idle. And i believe it is an airleak.
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Old 09-28-2006, 06:57 AM   #6262
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got the KAWAHARA 4mm chassis...something difference
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Mugen MTX-4-ssl10141.jpg   Mugen MTX-4-ssl10142.jpg   Mugen MTX-4-ssl10143.jpg   Mugen MTX-4-ssl10144.jpg   Mugen MTX-4-ssl10145.jpg  

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Old 09-28-2006, 07:15 AM   #6263
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im runing that chassis and i think its the best 4mm on the market for the price and preformance
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Old 09-28-2006, 07:40 AM   #6264
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Quote:
Originally Posted by Nitro$junkie
im runing that chassis and i think its the best 4mm on the market for the price and preformance
i'm using the KAWA 3mm now, may be test the 4mm next week.
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Old 09-28-2006, 09:17 AM   #6265
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Quote:
Originally Posted by THE DOCTOR
I checked once and found the stock Mugen chassis is stiffer then the Kawahara 3mm.
I have one of the earlier MTX-4 kits. My stock chassis doesn't feel stiffer than the Kawa 3mm. In fact, I could've sworn that when Mugen first put up the CAD drawings online, it said the chassis was 6061 alum. But now it says 7075, which is way better. Makes me wonder if they switched material in production. If I get into a pretty bad accident, that's when my 2nd gear starts to strip (flex). I had a new Kawa 3mm but gave it off to my buddy who needed it more than I did. His stock chassis had like a 6-8mm bow. Even he felt that it was way stiffer than the stock. Who knows, maybe you have the latest version.
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Old 09-28-2006, 12:22 PM   #6266
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Quote:
Originally Posted by Slo-MTX4
To be honest i dont think that the runner time was the problem. I have been chasing a problem where my engine wont return back to idle. And i believe it is an airleak.
Check your fuel lines also, and your exhaust. I had the same problem, and i found out I was losing fuel through my fuel line!! Check your echause gasket as well!!!
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Old 09-28-2006, 12:27 PM   #6267
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Quote:
Originally Posted by FF25510
got the KAWAHARA 4mm chassis...something difference
Where did you purchase it from?? And I meant to say exhaust in the previous thread!!
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Old 09-28-2006, 04:22 PM   #6268
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Quote:
Originally Posted by Osiris 75
Check your fuel lines also, and your exhaust. I had the same problem, and i found out I was losing fuel through my fuel line!! Check your echause gasket as well!!!
Done all that. New fuel line, new tank, added a pressure chamber, tried 2 different exhausts. Just about to give up. Last thing i am can try now is to seal the back plate. I have basicly rebuilt the entire engine the only things i havent replaced are the cooling head, crank case and crank everything else and i mean everything o'rings you name it have all been done.

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Old 09-28-2006, 06:28 PM   #6269
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Quote:
Originally Posted by Osiris 75
Where did you purchase it from?? And I meant to say exhaust in the previous thread!!
i'm live in Hong Kong
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Old 09-28-2006, 06:37 PM   #6270
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Quote:
Originally Posted by THE DOCTOR
I checked once and found the stock Mugen chassis is stiffer then the Kawahara 3mm.
Yes, ur right, see my post #6262 stock chassis was a little bit wide in centre.
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