 Weber questions |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
  |
| Joe Bob |
 Oct 11 2004, 11:04 AM
Post
#1
|
|
Retired admin, banned a few times  Group: Members Posts: 17,427 Joined: 24-December 02 From: Boulder CO Member No.: 5 Region Association: None  |
My triple throat Webers on Franky sneeze and cough while at mid range cruise speed. They sound fine at idle and WOT.....
Any ideas? |
   |
 
|
| Rusty |
Oct 11 2004, 11:05 AM
Post
#2
|
|
Wanted: Engine case GA003709 Group: Admin Posts: 7,941 Joined: 24-December 02 From: North Alabama Member No.: 6 Region Association: Galt's Gulch 
|
Allergies?
|
|
|
|
| Toast |
Oct 11 2004, 11:05 AM
Post
#3
|
|
Not bad for carrying sway bars. Group: Members Posts: 3,377 Joined: 20-January 04 From: Las Vegas Member No.: 1,580 Region Association: Southwest Region |
Is one of your venturies clogged or got fine dust in it?
(IMG:style_emoticons/default/confused24.gif) Just a thought. |
|
|
|
| Joe Bob |
Oct 11 2004, 11:06 AM
Post
#4
|
|
Retired admin, banned a few times Group: Members Posts: 17,427 Joined: 24-December 02 From: Boulder CO Member No.: 5 Region Association: None |
Nah...Frank's had all his shots.... :finger2:
|
|
|
|
| SLITS |
Oct 11 2004, 11:08 AM
Post
#5
|
|
"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
Oh, pharts at midrange just like you - one of the family.
|
|
|
|
| Toast |
Oct 11 2004, 11:10 AM
Post
#6
|
|
Not bad for carrying sway bars. Group: Members Posts: 3,377 Joined: 20-January 04 From: Las Vegas Member No.: 1,580 Region Association: Southwest Region |
QUOTE(SLITS @ Oct 11 2004, 10:08 AM) Oh, pharts at midrange just like you - one of the family. Damit Slits! Dont encourage him to post of picture of his ass. (IMG:style_emoticons/default/icon8.gif) |
|
|
|
| Aaron Cox |
Oct 11 2004, 11:12 AM
Post
#7
|
|
Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
are they sync'd perfect left to right? mains to small/large?
|
|
|
|
| J P Stein |
Oct 11 2004, 11:30 AM
Post
#8
|
|
Irrelevant old fart Group: Members Posts: 8,797 Joined: 30-December 02 From: Vancouver, WA Member No.: 45 Region Association: None |
QUOTE(mikez @ Oct 11 2004, 09:04 AM) My triple throat Webers on Franky sneeze and cough while at mid range cruise speed. They sound fine at idle and WOT..... Any ideas? Sure, lots of em'. (IMG:style_emoticons/default/biggrin.gif) If by mid range you mean 2500-3500 rpms, you're still on the idle circuit or transitioning to the main circuit.....a typical problem for Webers. The "cure" (assuming all else is right) is to richen the idle circuit. Then you're over rich and have other problems which you then have to cure.....which is doable. All this is pretty general cause you were pretty general with your discription....no details like ignition system, cams, jet sizes, motor size......how the carbs were tuned....float level checks, balancing (the biggest single item that is screwed up...IMO). Anyone that has a good running 9eleben motor with Webers has gone thru this or hired it done. Long distance tuning is a bitch. |
|
|
|
| HarveyH |
Oct 11 2004, 11:39 AM
Post
#9
|
|
Member Group: Members Posts: 450 Joined: 19-June 03 From: Downingtown, PA Member No.: 843 |
Remember, (IMG:style_emoticons/default/wacko.gif) the idle jets control your mixture from just off-idle to 3000 - 3500 RPM. The idle mixture screws adjust the mixture only at static idle, so you can get a decent static idle mixture and still have jets that are too rich or lean for low and mid-range running. Of course since the main jets tend to control the range from about 2800 RPM up, (notice the overlap) changing the idle jets may make it necessary to change your mains. (IMG:style_emoticons/default/headbang.gif) Air correction jets further modify the fuel delivery curve from about 4000 RPM and up, and emulsion tubes are some mystical force of nature that do magic.
I need a beer (IMG:style_emoticons/default/beer3.gif) Harvey |
|
|
|
| Toast |
Oct 11 2004, 11:45 AM
Post
#10
|
|
Not bad for carrying sway bars. Group: Members Posts: 3,377 Joined: 20-January 04 From: Las Vegas Member No.: 1,580 Region Association: Southwest Region |
(IMG:style_emoticons/default/agree.gif) with HarveyH
|
|
|
|
| J P Stein |
Oct 11 2004, 11:49 AM
Post
#11
|
|
Irrelevant old fart Group: Members Posts: 8,797 Joined: 30-December 02 From: Vancouver, WA Member No.: 45 Region Association: None |
As I suspected, he's also posted this Q on the 9eleben birdboard......and hasn't collected so much BS (IMG:style_emoticons/default/biggrin.gif)
|
|
|
|
| HarveyH |
Oct 11 2004, 01:44 PM
Post
#12
|
|
Member Group: Members Posts: 450 Joined: 19-June 03 From: Downingtown, PA Member No.: 843 |
When it comes to 914's, we know our BS
Harvey (IMG:style_emoticons/default/jester.gif) |
|
|
|
| givory |
Oct 11 2004, 05:25 PM
Post
#13
|
|
Newbie Group: Members Posts: 43 Joined: 10-January 03 From: Toronto, Canada Member No.: 125 |
Mike - I had a similar problem with my 40 IDA's. I was pushing fuel through a dirty filter, clogging one or two idle jets regularly. Seemed to go weak just where the idle jets handed-off to the mains. A shot of compressed air worked for me.
Gavin |
|
|
|
| Joe Bob |
Oct 11 2004, 09:28 PM
Post
#14
|
|
Retired admin, banned a few times Group: Members Posts: 17,427 Joined: 24-December 02 From: Boulder CO Member No.: 5 Region Association: None |
Thanks givory....
BTW, JP...no answers either....at least any worth a shit. (IMG:style_emoticons/default/givemebeer.gif) |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 1st June 2024 - 03:02 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.