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| stock briggs carb http://mudmotortalk.com/mmt_v2/viewtopic.php?f=3&t=11935 |
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| Author: | benny365 [ Thu Aug 26, 2010 1:08 pm ] |
| Post subject: | stock briggs carb |
On a stock 35hp briggs carb, are there one or two pilot jet(s)? also does anyone know the inside dimension of said jet(s) ex. .058, .127, .078 |
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| Author: | deadbird8 [ Thu Aug 26, 2010 9:49 pm ] |
| Post subject: | Re: stock briggs carb |
I think the pilots are on the sides of the bowl and are marked with a size on them. You ever get that running right? |
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| Author: | benny365 [ Fri Aug 27, 2010 7:04 am ] |
| Post subject: | Re: stock briggs carb |
took the carb apart, there are two and there is 52 stamped on them. However that is not .052" no DB8 haven't got it running perfect yet. still stumbles when I mash the throttle just off of idle. I'm going to open up the pilot jets a few thousandths to richen it a bit. I had an old Honda 750 with the same problem, running lean just off of idle, so I opened up the pilot jets a bit and it fixed it. I'll give it a shot and post results for everyone. |
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| Author: | benny365 [ Fri Sep 17, 2010 1:46 pm ] |
| Post subject: | Re: stock briggs carb |
so I opened up the pilot jets from .018 to 0225 might have went too much. running in the water, the governer wants to surge at 3/4 to full throttle. pass. side plug looks lean drivers side looks good, some brown on it I put a infrared temp gauge on the exhaust manifolds and I get 30 deg. hotter on the passenger side at idle, that is the side with the 142(smaller) main. I switched my (custom) pilot jets from side to side and it still is 30 deg. hotter on the pass. side. Question is this normal? thanks |
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| Author: | deadbird8 [ Sun Sep 19, 2010 4:25 am ] |
| Post subject: | Re: stock briggs carb |
Was always told the #1 is the workhorse of the engine. I've seen some posts speculating why but don't remember the specifics. |
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| Author: | craig [ Sun Sep 19, 2010 2:46 pm ] |
| Post subject: | Re: stock briggs carb |
as deadbird said.....cylinder #1 will always run hotter. |
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| Author: | benny365 [ Sun Sep 19, 2010 5:47 pm ] |
| Post subject: | Re: stock briggs carb |
so 30 deg. is not a big deal. ok I think I'm trying to do more with the carb than its able to do. I keep telling myself its not a mikuni. I'll get some stock pilot jets and go from there. Does anybody have any stock pilot jets. new 13.70ish from jacksmallengine.com |
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| Author: | deadbird8 [ Sun Sep 19, 2010 7:21 pm ] |
| Post subject: | Re: stock briggs carb |
MB was selling new carbs for like $85 (ones they took off at the factory). You may want to look at that and get lots of spares. |
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| Author: | benny365 [ Wed Sep 22, 2010 12:12 pm ] |
| Post subject: | Re: stock briggs carb |
made progress today, I said screw it and opened the 142 main jet to match the 148 main. took it out and it ran very well. had some stall just off of idle so I opened up the idle mixture screws 1/2 then another 1/4 turn and now she has fairly decent throttle response. #1 cylinder is the one on the right as your looking at the front of the motor? |
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