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RCP Phx
Samba Member
Joined: November 20, 2021
Posts: 496
Location: Phoenix,AZ
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 Posted: Wed Jun 29, 2022 9:14 am Post subject: Re: Distributor drive set proper, but can't spin svda way to adjust |
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| While I agree that the "weeper" hole is needed it's positioning is irrelevant as it barely protrudes into the "cut-out" which more serves the distributor dive gear. On distributor drive gear the "helical cut gear" along with the "helical oil groove" in the bearings surface would "screw" oil up from the bottom so it would need the "relief" cut out in the case. The oil groove in the distributor body barely extends into to that relief cut allowing any oil to drain back into the case from the distributor body! |
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oprn
Samba Member
Joined: November 13, 2016
Posts: 12690
Location: Western Canada
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| Posted: Wed Jun 29, 2022 9:52 am Post subject: Re: Distributor drive set proper, but can't spin svda way to adjust |
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| RCP Phx wrote: |
| While I agree that the "weeper" hole is needed it's positioning is irrelevant as it barely protrudes into the "cut-out" which more serves the distributor dive gear. On distributor drive gear the "helical cut gear" along with the "helical oil groove" in the bearings surface would "screw" oil up from the bottom so it would need the "relief" cut out in the case. The oil groove in the distributor body barely extends into to that relief cut allowing any oil to drain back into the case from the distributor body! |
So were does this oil get into the distributor body that needs to drain out this so called weeper hole? It can't come up past the distributor drive gear.
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RCP Phx
Samba Member
Joined: November 20, 2021
Posts: 496
Location: Phoenix,AZ
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| Posted: Wed Jun 29, 2022 10:03 am Post subject: Re: Distributor drive set proper, but can't spin svda way to adjust |
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From crankcase pressure and any oil slinging/misting, so it wouldn't matter the position of the groove!
What do you think always makes the fuel pump cross-shaft bleed oil? There is a cure for that too! |
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2type2
Samba Member
Joined: June 02, 2002
Posts: 975
Location: SW Colorado
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| Posted: Wed Jun 29, 2022 10:42 am Post subject: Re: Distributor drive set proper, but can't spin svda way to adjust |
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That's all nice info, but I am dealing with other issues please. Bear with me , I am about to f-it and put the old parts back on.Try to ascertain where I am failing---
The rotor points to 7 o'clock at 7.5 btdc. There are two positions available that could accept #1 wire when rotating dist, but "lower" one will not allow another 5 degrees of turn to counter clockise,(vac can hits intake/carb),which is needed to get rotor positioned to just before firing. So choosing the next position(above7o'clock) and turning the dist c-c to position
and refit) allows static timing of #1--- turning clockwise till light just comes on,go past, turn counterclockwise till light goes out ,now clockwise and lock dist where static light just comes on. That's it. Won't fire. (100 percent sure on wire placement, started by pulling all and refit) What's the mess up? It's eating me up! VW Dementia.
Not possible to turn dist cam 180 because vac can hits.And why is the other dist position not work if #1 tdc lined up ok?
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RCP Phx
Samba Member
Joined: November 20, 2021
Posts: 496
Location: Phoenix,AZ
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| Posted: Wed Jun 29, 2022 10:52 am Post subject: Re: Distributor drive set proper, but can't spin svda way to adjust |
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| Chip wrote: |
| Sounds like you just need to reindex the drive (gear) until you can adjust the timing to where you want it. "Proper" isn't always right. Pull that drive, move it a tooth or two, make sure it is set all the way down, put the distributor back in the hole, fire it up and adjust timing to the sweet spot. |
This^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
It's real simple, set the motor #1 TDC and pull the distributor and distributor drive gear. Set your new distributor housing in place (w/o drive gear) and find the place (rotation) it fits for your application. Now re-install distributor drive gear in "to match", DONE!
BTW, the gear has 12 teeth so that's every 30*.
Don't worry about the shims as long as know they are there they are easily dealt with!
Last edited by RCP Phx on Wed Jun 29, 2022 11:29 am; edited 2 times in total |
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chrisflstf
Samba Member
Joined: February 10, 2004
Posts: 3438
Location: San Diego
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| Posted: Wed Jun 29, 2022 11:27 am Post subject: Re: Distributor drive set proper, but can't spin svda way to adjust |
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| It sounds like you have overlooked something simple. Go back and check basics, plug and coil wire fitment, 12v to coil, tdc on number 1, not 3, etc. Pulling the drive gear to relocate is risky due to the shims. They wont fit past the brass gear, can get wedged or dropped, which leaves you way worse shape than you are. Maybe break for another day... |
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2type2
Samba Member
Joined: June 02, 2002
Posts: 975
Location: SW Colorado
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| Posted: Wed Jun 29, 2022 1:14 pm Post subject: Re: Distributor drive set proper, but can't spin svda way to adjust |
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As I understand it the drive can be lifted approx 1"(?) to allow turning it, without disturbing the shims. Question is, since I need the dist rotor to turned about 1" counterclockwise (to allow for vac-can clearance), do I turn the drive gear clockwise or counter-clockwise ?
Would have liked to avoid it, but apparently must be repositioned. Which way,please!
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Lingwendil
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Joined: February 25, 2009
Posts: 3988
Location: Antioch, California, a block from the hood
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chrisflstf
Samba Member
Joined: February 10, 2004
Posts: 3438
Location: San Diego
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| Posted: Wed Jun 29, 2022 2:52 pm Post subject: Re: Distributor drive set proper, but can't spin svda way to adjust |
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| I would figure out why it doesnt start now, before goin after the dist drive gear. If you do decide to pull it, the fuel pump push rod needs to come out first, as it rides on the eccentric portion of the drive gear. Also, it would be helpful to pull the dist and measure down to the top of the gear, from the top of the case. Write that distance down. Since you cant tell if the shims drop, tilt or stay put, that dimension will tell you if all is correct. The shims are/should be .025" thick |
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Fender38
Samba Member
Joined: April 11, 2015
Posts: 75
Location: Las Vegas, NV
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| Posted: Wed Jun 29, 2022 10:07 pm Post subject: Re: Distributor drive set proper, but can't spin svda way to adjust |
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I know you said you just ran this distributor in another engine and it worked fine. But I actually think that's your problem. I'd try and install a different (good quality) distributor before doing anything else, and see what happens.
You can't rely on one of those knock off distributors from China to function properly. Those things can give up the ghost at any time. |
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2type2
Samba Member
Joined: June 02, 2002
Posts: 975
Location: SW Colorado
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| Posted: Thu Jun 30, 2022 5:52 am Post subject: Re: Distributor drive set proper, but can't spin svda way to adjust |
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Counterclockwise turn? I'm confused here-- Since I need more room for the vac can to turn towards fuel pump( going counterclockwise, to allow rotor to be just ahead of firing) ,wouldn't the drive turn be clockwise--- to turn the vac can back,toward engine rear and away from fuel pump?
This is getting to be a migraine of sorts.
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chrisflstf
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Joined: February 10, 2004
Posts: 3438
Location: San Diego
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| Posted: Thu Jun 30, 2022 7:46 am Post subject: Re: Distributor drive set proper, but can't spin svda way to adjust |
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| Maybe you should dump the vac advance dist and just get a mechanical. Glenn or Bill or Marcel can set you up with a good one |
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2type2
Samba Member
Joined: June 02, 2002
Posts: 975
Location: SW Colorado
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| Posted: Thu Jun 30, 2022 8:46 am Post subject: Re: Distributor drive set proper, but can't spin svda way to adjust |
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I was running an 009, and this is an attempt to "upgrade" to the svda.
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Lingwendil
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Joined: February 25, 2009
Posts: 3988
Location: Antioch, California, a block from the hood
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2type2
Samba Member
Joined: June 02, 2002
Posts: 975
Location: SW Colorado
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| Posted: Fri Jul 01, 2022 11:01 am Post subject: Re: Distributor drive set proper, but can't spin svda way to adjust |
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Just did 8 mile test run. Running smooth,sounds nice. Back at garage: it's Too Hot. Dwell checks at 50, timing light shows 7.5 btdc. Running up to 3400rpm w/ vac plugged-- shows advance at 34°. Was less? So going back to less advance, it will not idle acceptably under 7.5 btdc. I'ld like that mechanical total advance to be at 30°, not the 34°.
But she definitely seems to be running well on the highway.
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bsairhead
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Joined: October 08, 2008
Posts: 3559
Location: viroqua wi.
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| Posted: Fri Jul 01, 2022 4:17 pm Post subject: Re: Distributor drive set proper, but can't spin svda way to adjust |
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| Glad you got it running, What was the issue? |
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2type2
Samba Member
Joined: June 02, 2002
Posts: 975
Location: SW Colorado
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| Posted: Fri Jul 01, 2022 4:34 pm Post subject: Re: Distributor drive set proper, but can't spin svda way to adjust |
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Well it is running and sounds pretty good, but the overheating remains. I need a way to limit the mechanical advance on the svda to 30° instead of the 34-35° it's reaching now. What's the best way to do that?
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bsairhead
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Joined: October 08, 2008
Posts: 3559
Location: viroqua wi.
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| Posted: Fri Jul 01, 2022 4:43 pm Post subject: Re: Distributor drive set proper, but can't spin svda way to adjust |
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| 2type2 wrote: |
| Well it is running and sounds pretty good, but the overheating remains. I need a way to limit the mechanical advance on the svda to 30° instead of the 34-35° it's reaching now. What's the best way to do that? |
So you have 34-35 degrees with the hoses off and plugged? |
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2type2
Samba Member
Joined: June 02, 2002
Posts: 975
Location: SW Colorado
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| Posted: Sat Jul 02, 2022 7:03 am Post subject: Re: Distributor drive set proper, but can't spin svda way to adjust |
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The strobe says so. Vac line is pinched close w/ hemostat.Yes, max is35-35 Ineed to change it, not sure how.Suggestions?
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"A life of peace and happiness depends on your own gratefulness" |
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Fender38
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Joined: April 11, 2015
Posts: 75
Location: Las Vegas, NV
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| Posted: Sat Jul 02, 2022 7:46 am Post subject: Re: Distributor drive set proper, but can't spin svda way to adjust |
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| 2type2 wrote: |
| The strobe says so. Vac line is pinched close w/ hemostat.Yes, max is35-35 Ineed to change it, not sure how.Suggestions? |
You have to adjust the stops which limit how much the weights open for the centrifugal advance. |
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