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> Weber IDF Jetting
FastFroggy
post Jun 30 2017, 12:20 PM
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I am starting to play around with tuning and plan to start getting some small increments in jetting. Just to see if I can improve drivability for now. I have twin 44s

Simple question for now: I need 4 turns of idle mixture to now stumble off the line. Should I consider jetting richer?

thanks
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Jetsetsurfshop
post Aug 9 2017, 02:26 PM
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I think I know something here...lets see if I can help.
My car has had a drivability issue around 2500 to 3500rpm. It sucks for around town driving, but on the track it doesn't matter at all to me because I try to keep it in the power the whole time. If its drivable and the A/F ratio is good at WOT then run it.
Now, I also agree that those chokes are to big. I had 32 on a 2.0 liter and the car behaved nicely. I hate panicking before a track day. I just did it and I missed my ignition problem. (a story for another day) But if you have the time, i'd choke those carbs down.
On a side note, my idle jets were not playing nice so i removed them a found what I would describe as varnish in all four. One was really bad. I bought a hobby drill set and lightly polished them up. All better now. (this is using only 98 octane fuel too, but the car sits a lot)
Not sure I helped. (IMG:style_emoticons/default/confused24.gif)
Have fun at the track! Its where 914s belong. (IMG:style_emoticons/default/driving.gif)
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Posts in this topic
FastFroggy   Weber IDF Jetting   Jun 30 2017, 12:20 PM
Perry Kiehl   Idle speed screws or mixture screws? There's ...   Jun 30 2017, 05:19 PM
FastFroggy   Thanks, yep idle mixture screws.   Jun 30 2017, 05:59 PM
stownsen914   2 full turns on the idle mixture screws sounds lik...   Jul 1 2017, 06:10 AM
FastFroggy   I am initially working for initial throttle tip in...   Jul 1 2017, 04:48 PM
McMark   You should post the entirety of your setup. Engin...   Jul 4 2017, 08:21 PM
john77   4 sounds like a lot just to get it stumbling off t...   Jul 7 2017, 04:53 PM
FastFroggy   Thanks for all your input. Sorry, got delayed by a...   Aug 8 2017, 07:30 PM
ThePaintedMan   36 venturis in 44s for a 1.7 liter is HUGE. I...   Aug 9 2017, 06:30 AM
rhodyguy   I think george nailed it. The venturies are VERY l...   Aug 9 2017, 08:47 AM
Jetsetsurfshop   I think I know something here...lets see if I can ...   Aug 9 2017, 02:26 PM
FastFroggy   I should have been clearer that engine block is a ...   Aug 9 2017, 06:17 PM
McMark   You're going to have a really hard time withou...   Aug 12 2017, 08:13 AM
ThePaintedMan   :worship: Boom. Mic drop. Mark knows his stuff. It...   Aug 12 2017, 04:44 PM
FastFroggy   Look I bought the car with this set up and I am tr...   Aug 13 2017, 09:17 PM
stugray   [b]If it continues I'm out. I [b]was going...   Aug 15 2017, 10:04 AM
McMark   I didn't intent for you to feel beat on. I...   Aug 14 2017, 07:26 AM
FastFroggy   Thank you for your note. Again, I really apprecia...   Aug 14 2017, 10:47 AM
rhodyguy   Forget that 6.8k rpm number for your calculations....   Aug 14 2017, 11:19 AM
michael7810   The redline on my 4 cyl car is 5.6K. Can you reall...   Aug 14 2017, 01:46 PM
Jetsetsurfshop   The redline on my 4 cyl car is 5.6K. Can you real...   Aug 14 2017, 03:46 PM
euro911   Quit brow-beating the new guys, Mark :poke: :l...   Aug 14 2017, 04:31 PM
FastFroggy   :blink: I understand the consensus ( for overall ...   Aug 14 2017, 05:13 PM
Racer Chris   Keep the 44s. Don't expect good performance be...   Aug 15 2017, 07:05 AM
Racer Chris   Depending on your specific engine build you may ev...   Aug 15 2017, 07:17 AM


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