 914 turbo to rich |
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| stoneman18969 |
 Oct 7 2014, 12:03 PM
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#1
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Newbie  Group: Members Posts: 12 Joined: 10-August 14 From: Pennsyvlania Member No.: 17,760 Region Association: North East States  |
Need help 2056 type 4, weber carbs, turbo emolsion tubes, drilled jets 170 maby,200 air correction, 50 idle, scat c45 cam, my problem is too rich at normal driving speeds, down at 2000rpm going up a hill I get a 9 to 10 afr.above on boost is fine, if I take the turbo hats off, no boost, it will clear up, like it cant get air when turbo is hooked up, can I lower idle jets to compensate, or what?
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| stoneman18969 |
Oct 8 2014, 06:28 AM
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#2
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Newbie Group: Members Posts: 12 Joined: 10-August 14 From: Pennsyvlania Member No.: 17,760 Region Association: North East States |
Where the turbo guys
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| Mike Bellis |
Oct 8 2014, 07:50 AM
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#3
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Resident Electrician Group: Members Posts: 8,345 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None 
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QUOTE(stoneman18969 @ Oct 8 2014, 05:28 AM)  Where the turbo guys You can't turbo a 914.... (IMG:style_emoticons/default/poke.gif) You should switch to EFI. A carb turbo will be difficult to get running efficient. (IMG:style_emoticons/default/welcome.png) |
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| rtalich |
Oct 8 2014, 08:12 AM
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#4
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Member Group: Members Posts: 279 Joined: 25-September 06 From: Bellevue, WA Member No.: 6,913 Region Association: None |
Or try asking the question over on shoptalkforums
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| Maltese Falcon |
Oct 8 2014, 11:42 AM
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#5
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Advanced Member Group: Members Posts: 4,645 Joined: 14-September 04 From: Mulholland SoCal Member No.: 2,755 Region Association: None |
QUOTE(stoneman18969 @ Oct 8 2014, 05:28 AM) Where the turbo guys I'd love to help you out...but not too familiar with non-f.i. turbo applications. I did a 4 cyl. ( draw through) Turbo system on a 356 speedster with a side draft Mikuni. It ran like a light switch: on or off. The raw fuel also did the compressor seal in at an early age. If you are running a Blow through system, you are already ahead of the game. Sounds like you need to check all of your vulnerable carb air leak areas, including the throttle shaft, make them airtight.Then find a good Weber carb tuner for jetting. The book "Turbochaging" by Hugh McGuiness is a good reference. Marty |
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| Mike Bellis |
Oct 8 2014, 09:17 PM
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#6
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Resident Electrician Group: Members Posts: 8,345 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None
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This sounds like a good question for The Samba. Those T1 guys turbo like this all this time.
http://www.thesamba.com/vw/forum/viewtopic.php?t=397610 |
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| PotterPorsche |
Oct 8 2014, 11:16 PM
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#7
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Member Group: Members Posts: 295 Joined: 10-November 13 From: Hayward CA Member No.: 16,628 Region Association: None |
The pressure of the turbo is Making the mains come on early. Typically the weight of air pushes the mains in a normally aspirated setup. You now have 10-15 psi pushing through the airs
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| r_towle |
Oct 9 2014, 12:14 PM
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#8
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Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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Do you have a blow off valve?
Does the condition change if you adjust the blow off valve? |
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| stoneman18969 |
Oct 9 2014, 12:24 PM
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#9
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Newbie Group: Members Posts: 12 Joined: 10-August 14 From: Pennsyvlania Member No.: 17,760 Region Association: North East States |
QUOTE(r_towle @ Oct 9 2014, 10:14 AM) Do you have a blow off valve? Does the condition change if you adjust the blow off valve? I have a blow off, condition doesnt change adjusting , it goes rich after idel, before boost, right were you want to cruise around, loads up runs like poop, mash the peddle broblem solved for a couple miles, it will idle at 14 afr all day,15 on boost, driving 9 to 11 afr |
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| ripper911 |
Oct 10 2014, 05:51 AM
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#10
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corde pulsum tangite Group: Members Posts: 2,920 Joined: 25-April 10 From: Powder Springs, GA Member No.: 11,654 Region Association: South East States |
QUOTE(stoneman18969 @ Oct 7 2014, 02:03 PM) 914 turbo too rich At least it's not a 911 turbo, then you'd have to be rich too. |
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