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Old 07-04-2007, 10:37 PM   #1 (permalink)
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CRF150R Jetting

I know some of you may say that this is another jetting Thread..I searched & find mixed info. I'm sure some of you out there feel the same way.....

Just picked it up for my son on Fathers Day weekend (I'm such a good DAD....HaHa)...came in to dealer after the cam recall.....

I have a stock motor, no pipe, stock air filter (with screen). Ride in california 0' to 5500' elevation......Temp now has been about 90-95 deg out....Break in has been done.


Mine came with Stock:
Slow speed Jet: 45 (Yes, 45. might be what they are installing after the cam recall)
Pilot Screw: 2 turns out
Leak Jet: 60
Main Jet: 135
With this setup, it does not bog on low end so much, just a pain to start up when warmed up....it was popping on deceleration, but I set pilot screw to 1-1/2 turns out & it helped with the decel popping.

I here options like this:
Slow speed Jet: 42-45
Pilot Screw: 2 Turns Out
Leak Jet: 50 ------Some don't say to change this, just to stay with the stock 60.
Main Jet: 138
Wire the Acc pump cam (any one have info on how this is done, a picture would be great)

I need help on the hot starting problem, as I still have this problem even with the 45 stock slow speed jet..... Any help would be great, Thank you in advance...

Last edited by subarubie; 07-04-2007 at 10:41 PM. Reason: some correction on typing
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Old 07-05-2007, 03:30 PM   #2 (permalink)
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Re: CRF150R Jetting

My mechanic has performed the ProCircuit carb mods on my bike. It runs perfect!
From the factory the 150R basically sucks. Mine was unridable!
On the other hand it is an absolutely killer bike when tuned properly.
The best bike I have owned!
Have an expert do the work. You wont be disappointed.

Scoot
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Old 07-05-2007, 03:52 PM   #3 (permalink)
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Re: CRF150R Jetting

subarubie
we run a 138 main
slow jet 48
pilot screw 2 turns
r&d power bowl it has a adjustable leak jet
call me and i will help with the wireing of the pump
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Old 07-10-2007, 10:31 PM   #4 (permalink)
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Re: CRF150R Jetting

what jetting would you recommend here in illinois with temperature around 75-80 degrees and a low elevation?
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Old 07-11-2007, 11:32 AM   #5 (permalink)
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Re: CRF150R Jetting

My dad owns a honda shop(Belleville Honda ) and has never heard and complaints about jetting problems with the 150R.
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Old 07-16-2007, 10:55 PM   #6 (permalink)
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Re: CRF150R Jetting

What should i run here in illinois with elevation of 0-1000
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Old 07-22-2007, 10:55 PM   #7 (permalink)
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Re: CRF150R Jetting

Quote:
Originally Posted by scoot73 View Post
My mechanic has performed the ProCircuit carb mods on my bike. It runs perfect!
From the factory the 150R basically sucks. Mine was unridable!
On the other hand it is an absolutely killer bike when tuned properly.
The best bike I have owned!
Have an expert do the work. You wont be disappointed.

Scoot
So what jets are you using??
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Old 08-18-2007, 10:16 PM   #8 (permalink)
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Re: CRF150R Jetting

Why dont u just get hotshot jets
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Old 08-18-2007, 10:21 PM   #9 (permalink)
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Re: CRF150R Jetting

If you cut that backfire screen out of the air box it will make it a lot better. Crazy how much it restricts it.
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Old 08-18-2007, 10:46 PM   #10 (permalink)
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Re: CRF150R Jetting

Quote:
Originally Posted by xr80david View Post
Why dont u just get hotshot jets
I mean the Boyesen Quick Shot. My bad. I wasnt thinking.
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Old 08-18-2007, 10:48 PM   #11 (permalink)
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Re: CRF150R Jetting

Hot starting a 4-stroke like that is going to be hard to overcome. It is going to be hard to start once warmed up.
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Old 09-28-2007, 10:09 AM   #12 (permalink)
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Re: CRF150R Jetting

where did you get the ProCircuit carb mods was it a kit and DOES IT GET WARMED UP FASTER THAT IS MY ONLY PROBLEM IT TAKES 15 MIN TO GET WARMED UP. AND HOW MUCH WAS IT
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Old 10-01-2007, 03:46 PM   #13 (permalink)
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Re: CRF150R Jetting

same mine takes forever to warm up.
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