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Gutted stock muffler & mikuni carb question
http://www.mudmotortalk.com/mmt_v2/viewtopic.php?f=2&t=73925		 Page 1 of 1
Author:  Pinhead pat [ Thu Jun 20, 2019 6:02 pm ]
Post subject:  Gutted stock muffler & mikuni carb question
I have a 36hp PD with a mikuni 42hsr carb and BPS Q muffler. Both carb and muffler are shot so i bought a new carb and a $40 stock muffler from prodigy. I want to gut the muffler since it seems like that is the way to get best performance on a stock motor with mikuni carb. Can anybody tell me what size jets i will need for the carb? It came with a 97 main jet. My old one had a 97 too but it seemed to run rich, but it was also pretty fucked up so.... Any input is appreciated. Thanks fellas


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Author:  Will [ Thu Jun 20, 2019 7:57 pm ]
Post subject:  Re: Gutted stock muffler & mikuni carb question
97? Main jet? Not sure what you have, should be 160's...
Author:  Russ [ Thu Jun 20, 2019 10:40 pm ]
Post subject:  Re: Gutted stock muffler & mikuni carb question
You bought a new mikuni? What was wrong with the old one that warranted you spending another $250+?

And yeah, main jet should be somewhere around the 155-162.5 range for it.

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#GhostBoat
#Whoneedsphysicsihaveamudmotor
Author:  bluesky2012 [ Fri Jun 21, 2019 8:20 am ]
Post subject:  Re: Gutted stock muffler & mikuni carb question
Author:  banded-mallard [ Fri Jun 21, 2019 11:05 am ]
Post subject:  Re: Gutted stock muffler & mikuni carb question
Author:  Russ [ Fri Jun 21, 2019 2:08 pm ]
Post subject:  Re: Gutted stock muffler & mikuni carb question
It's probably the jet sizes converted to some cross reference thing using common core math. 2+3=lawnmower

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#Whoneedsphysicsihaveamudmotor
Author:  Pinhead pat [ Fri Jun 21, 2019 3:20 pm ]
Post subject:  Re: Gutted stock muffler & mikuni carb question
Author:  Pinhead pat [ Fri Jun 21, 2019 3:24 pm ]
Post subject:  Re: Gutted stock muffler & mikuni carb question
I took it to delta for them to tune it up back when i live in morgan city because i kept having to fuck with it (i’m still learning about this stuff and was over it) well they took it apart and said they couldnt even do anything with it i cant remember exactly what they said was wrong but i know it was missin some stuff and apparently somethin was so bad they said i need a new one even after i told them i was absolutely not gonna buy one from them for $500 when i could get it on amazon for 250 (there is a whole kit on there right now for 150) so i went ahead and bought a new one but im not going back to delta


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Author:  cb5331 [ Mon Jun 24, 2019 9:24 am ]
Post subject:  Re: Gutted stock muffler & mikuni carb question
I'll give you $10 for the one that cant be fixed.

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Author:  Pinhead pat [ Mon Jun 24, 2019 10:35 am ]
Post subject:  Re: Gutted stock muffler & mikuni carb question
Author:  dead animal [ Mon Jun 24, 2019 6:39 pm ]
Post subject:  Re: Gutted stock muffler & mikuni carb question
maybe you could also just find a stock carb and put on a stock muffler and have a motor you won't have to wrench on. might be an option, might not. i have found stock carbs from guys who bought other carbs for dirt cheap.

good luck!!
Author:  JBsuperG [ Mon Jun 24, 2019 6:54 pm ]
Post subject:  Re: Gutted stock muffler & mikuni carb question
I have a stock carb I would sell. Only has about 2 hours on it.
Author:  Pinhead pat [ Mon Jun 24, 2019 7:00 pm ]
Post subject:  Re: Gutted stock muffler & mikuni carb question
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