 New guy carb question- how to select the right jets? |
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| Chily89 |
 Oct 13 2014, 07:28 PM
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Newbie  Group: Members Posts: 2 Joined: 13-October 14 From: Ohio Member No.: 18,013 Region Association: Upper MidWest  |
I'm helping my friend get his car working correctly. We are having some carb issues. What is the process for getting the correct idle jets? I have read instructions on the redline website but I'm still having issues. The 914 is a 4cyl 2270 with dual weber 44 Idf's.
I read something about removing the main stacks then driving around. Can somebody please explain this method further. |
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| ThePaintedMan |
Oct 13 2014, 09:04 PM
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Advanced Member Group: Members Posts: 3,887 Joined: 6-September 11 From: St. Petersburg, FL Member No.: 13,527 Region Association: South East States 
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QUOTE(Chily89 @ Oct 13 2014, 09:28 PM)  I read something about removing the main stacks then driving around. Can somebody please explain this method further. I don't see how that would help... or even run (IMG:style_emoticons/default/blink.gif) There are a number of variables at play other than displacement including, but not limited to: head design/porting, altitude, intake length, cams, etc. What are your jets currently? We can probably help, but we need a baseline. Have you driven it yet? What specific problems are you having? |
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| McMark |
Oct 13 2014, 10:52 PM
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914 Freak! Group: Retired Admin Posts: 20,180 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
QUOTE(ThePaintedMan @ Oct 13 2014, 08:04 PM) QUOTE(Chily89 @ Oct 13 2014, 09:28 PM) I read something about removing the main stacks then driving around. Can somebody please explain this method further. I don't see how that would help... or even run (IMG:style_emoticons/default/blink.gif) Just don't open the throttle very far. I wouldn't go on a public road though. (IMG:style_emoticons/default/yikes.gif) As far as the idle jets, get a wideband O2 gauge. If it's rich, use smaller jets, if it's lean, use bigger jets. (IMG:style_emoticons/default/confused24.gif) Learning to tune carbs without the benefit of a WBO2 gauge is challenging - to put it lightly. |
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Posts in this topic
Chily89 New guy carb question- how to select the right jets? Oct 13 2014, 07:28 PM
Chily89 There currently is an AEM wideband installed. The... Oct 14 2014, 04:58 AM ThePaintedMan When you say it's "always too rich",... Oct 14 2014, 05:56 AM
tornik550
When you say it's "always too rich... Oct 14 2014, 06:15 AM tornik550
When you say it's "always too rich... Oct 14 2014, 06:40 AM ThePaintedMan Okay Tornik, that makes sense.
36s should be in t... Oct 14 2014, 07:36 AM tornik550
Okay Tornik, that makes sense.
36s should be in ... Oct 14 2014, 07:46 AM stugray AFR gauges are nearly useless except at WOT with a... Oct 14 2014, 09:38 AM McMark What you're describing about the AFR sounds li... Oct 14 2014, 09:29 PM stugray
stugray - Narrowband AFR gauges are nearly useles... Oct 14 2014, 10:00 PM tornik550 Thank you for every ones help. I found a very in... Oct 15 2014, 05:45 AM ThePaintedMan Yes. Which is why I suggested to start there first... Oct 15 2014, 06:04 AM stugray
Stu - think of it this way, widebands operate usi... Oct 15 2014, 07:14 AM ThePaintedMan Hope this doesn't get too hijacked...
But St... Oct 15 2014, 07:51 AM |
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