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Ruptured Duck
Joined: 28 Dec 2009 Posts: 59 Location: Gainseville Ga
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Posted: Thu Jul 08, 2010 9:01 am Post subject: Dual 34's / 1500 single port and a 009? |
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Been driving the bug all week... Have two tech questions for you guys.
(1) Having a little hesitation when on the expressway and lift off the gas... If I keep a little pedal it's smooth but does sputter from time to time. Is this related to the dual 34's and the 009 distributors? Would a vacuum advance distributor be a better choice and if so would I tie both carb vacuum ports (teed) or just pull from one intake? Currently I have these vacuumed lines connected with a hose to try and equalize the vacuum.
(2) What should I set the timing at..? I'm about 5 deg advanced now but yesterday (in the heat) I noticed some pinging under load on the expressway. I assume she was getting a little hot so I backed out of it. What is the most advance I can get away with?
1500, single port, dual 34's, 87mm jugs. |
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Greg
Joined: 12 Aug 2009 Posts: 490 Location: Jefferson, GA
1969 Volkswagen Beetle
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Posted: Thu Jul 08, 2010 9:49 am Post subject: Re: Dual 34's / 1500 single port and a 009? |
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[quote="Ruptured Duck"]Been driving the bug all week... Have two tech questions for you guys.
(2) What should I set the timing at..? I'm about 5 deg advanced now but yesterday (in the heat) I noticed some pinging under load on the expressway. I assume she was getting a little hot so I backed out of it. What is the most advance I can get away with?
When the distributor is fully advanced, I think that 30 degrees is a good place to start. Are you using a timing light or static? _________________ 1969 Beetle
1974 Westy FI Conversion |
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Ruptured Duck
Joined: 28 Dec 2009 Posts: 59 Location: Gainseville Ga
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Posted: Thu Jul 08, 2010 10:19 am Post subject: |
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light... O based off the split in the case. |
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Greg
Joined: 12 Aug 2009 Posts: 490 Location: Jefferson, GA
1969 Volkswagen Beetle
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Posted: Thu Jul 08, 2010 1:42 pm Post subject: |
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how much advance are you running now? _________________ 1969 Beetle
1974 Westy FI Conversion |
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Ruptured Duck
Joined: 28 Dec 2009 Posts: 59 Location: Gainseville Ga
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Posted: Thu Jul 08, 2010 2:05 pm Post subject: |
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well here is a question to your question... my pulley has three notches. Two close together then another about 10 degrees off to the left. I have been using the two notches as my timing marks because it would run like poop otherwise....
Timed off the two marks I would say I'm about 15deg. advanced at 700 RPM.
Is this too far. Just did not run well any less. |
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Greg
Joined: 12 Aug 2009 Posts: 490 Location: Jefferson, GA
1969 Volkswagen Beetle
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Posted: Thu Jul 08, 2010 2:43 pm Post subject: |
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Hmm, the notches are 5 degrees, 7.5 degrees and 10 degrees BTDC on a stock pulley, I think. From what I know about mechanical only distributors, I think you have to time it where it's fully advanced (about 3000 rpm) and let the idle advance fall where it may. Sounds like you're like me, you have the stock pulley which doesn't have degrees. You need a timing light that has a degree wheel on it. The degree wheel lets you use your TDC marking for timing purposes. I'd be happy to help you time it using my timing light. I'm located in jefferson. _________________ 1969 Beetle
1974 Westy FI Conversion |
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Ruptured Duck
Joined: 28 Dec 2009 Posts: 59 Location: Gainseville Ga
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Posted: Thu Jul 08, 2010 3:03 pm Post subject: |
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Thanks... I guess what I'll do is get a billet degree pulley. Kind of need it anyway to match the motor now.
Thanks for the offer. Just wanted to make sure i was not doing harm to the fresh motor.
In this heat what weight oil do most bug guys use? |
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Jon Site Admin
Joined: 01 Jun 2006 Posts: 2421 Location: Bishop GA
1969 Volkswagen Type 3
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Posted: Thu Jul 08, 2010 8:58 pm Post subject: |
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Ruptured Duck wrote: | In this heat what weight oil do most bug guys use? |
I use Brad Penn 20w-50. Clyde sells it and it is good stuff. _________________ 73 Typ481
76 Westy
73 Bug
69 Squareback
70 Fastback
63 Bug |
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Blowinsmokebbq
Joined: 21 May 2010 Posts: 158 Location: Winder Ga
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Posted: Fri Jul 09, 2010 12:07 pm Post subject: |
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I have went back to driving the bug in the heat from Winder to Marietta everyday in the traffic. Actually it's been lots of fun other than the heat.
The car is doing well MPG is around 30.
I need to contact clyde and get the eletronic ignition like we put on gregs at tech day.
I will be adjusting the cluth cable soon,and then i need to check the valves.
So Clyde if you see this call me please
Jeff Eperson
404-886-8120
I would like to shoot up there and buy some parts.
Thanks
Jeff E. _________________ Jeff Epperson
Blowin Smoke BBQ |
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Blowinsmokebbq
Joined: 21 May 2010 Posts: 158 Location: Winder Ga
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Posted: Sat Jul 10, 2010 3:51 pm Post subject: |
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Thanks Clyde for the help with the Eletronic Distributor and other parts. _________________ Jeff Epperson
Blowin Smoke BBQ |
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Clyde
Joined: 03 Jun 2006 Posts: 855 Location: Athens
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Posted: Sat Jul 10, 2010 7:46 pm Post subject: |
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Thaks for coming by! _________________ '69 Bug, 1776, dual kadrons, Web 111 cam
Clyde's Aircooled
(706) 206 6327 |
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Ruptured Duck
Joined: 28 Dec 2009 Posts: 59 Location: Gainseville Ga
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Posted: Mon Jul 12, 2010 8:15 am Post subject: |
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Changed the oil out (break in oil) with 20W-50 and added detergents that you just don't get in the newer oils. Also changed out the point set. Remebered that they were the original set from when we got the Bug. Set the Dwell at 48 and the timing at 7.5 BTDC. Running (not as good) so I think I'll play with the timing and maybe go to 10 BTDC. |
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Greg
Joined: 12 Aug 2009 Posts: 490 Location: Jefferson, GA
1969 Volkswagen Beetle
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Posted: Mon Jul 12, 2010 8:49 am Post subject: |
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The full advance is more important than the idle advance. At full advance it should be 30 degrees, then let idle fall wherever. _________________ 1969 Beetle
1974 Westy FI Conversion |
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Ruptured Duck
Joined: 28 Dec 2009 Posts: 59 Location: Gainseville Ga
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Posted: Mon Jul 12, 2010 9:13 am Post subject: |
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Greg wrote: | The full advance is more important than the idle advance. At full advance it should be 30 degrees, then let idle fall wherever. |
Agree.... I have ordered the new billet pully. will just need to play it by ear until it get here. No big rush. Son is still learning to drive the stick.
Thanks! |
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Ruptured Duck
Joined: 28 Dec 2009 Posts: 59 Location: Gainseville Ga
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Posted: Wed Jul 14, 2010 10:00 am Post subject: |
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Went on line and printed up a paper timing wheel. Taped it to the pulley and marked 15-30 ATDC. Set timing to 30 at 3,000 rpm and then adjusted the carbs (2 turns out from full in). Bug is running great. |
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