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falconboy
Joined: 22 Apr 2006
Posts: 18
Location: Melbourne, Australia
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 Posted: Fri Nov 13, 2009 2:38 pm Post subject: distributor vacuum unit |
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does anyone know which, if any, VW/audi has the same distributor vacuum advance unit as an '82 924 na (euro spec)?
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82, 5 speed, NA |
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Harm
Joined: 02 Apr 2009
Posts: 1378
Location: Holland
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| Posted: Sat Nov 14, 2009 9:16 am Post subject: Re: distributor vacuum unit |
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About a year ago I asked the Bosch GmbH store if there was any chance I could get/obtain a new exact same vacuum advance for my NA (ignition) distributor (altough it was in good order as they had tested). They checked the parts list in their computer and the answer that came out was ‘No’. But they assured me the stock one from a Golf/Rabbit would do the vacuum advance job… I forgot to ask a more specific answer at that time concerning what engine type, year build etc. but here is one distributor I took out of a 1982 1.3 VW to examen it …now I guess?
Vacuum advance still attached onto the VW distributor (diameter 66mm):
Taken apart, bottomside view:
Text: Small # 122, Large # 2201.
Placing the 924 vacuum advance unit next to it would be giving a frikin' nice result wouldn't it? Another myth dealt with… but I'm not in the position right now to rip the Toofah vacuum advance out of the car. It would take just one night: I will drain my car fluids tomorrow, saturday, and start to dismantle the engine because it needs a rebuild, blow-by on cilinder one, and will look into it then, so… tomorrow.
Does someone else got pix of a stock 924 or Turbo vacuum advance too compare? Please share.
Bosch Vacuum Advance Unit (Engine Electrical) Parts unit do show several types but when you filter the car parts down to a Porsche 924 the text ‘No Parts Found’ shows up, so… Computer says ‘No’.
Taking that route with the VW engine specs that I happen to know of this particular distributor doesn't give a fulfilling result either! That would mean; If this would be a replacement for the Porsche 924 vacuum advance, things don't look very promising. At least when you're looking for a new one that you can easily pull down from any online partsshop. 2nd hand would have to do it, if it was the correct one…
Lets hope the right part number will pop-up between one of these or this one.
Fingers crossed.
Regards, Harm.
Edit1: Bad grammar…
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Porsche 924 NA 1982 LY7A/A3A3 _ Greater driving pleasure never harmed anyone.
Last edited by Harm on Sat Nov 28, 2009 1:29 am; edited 1 time in total |
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Grenadiers
Joined: 20 Feb 2007
Posts: 3222
Location: Nelson, WI & Prescott, AZ
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| Posted: Sat Nov 14, 2009 9:41 am Post subject: |
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'Does someone else got pix of a stock 924 or Turbo vacuum advance too compare? Please share.'
I compared the outside physical features (with cap and rotor off) of a 1980 931 distributor to a 1977 distributor from my Martini/Rossi n/a car. They are physically identical, including the vacuum advance. Same number 030, I think, on the lower shaft. Not sure of the innards below the sensor of course. I can take a pic, but not really sure I want to tear them apart. yo.
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'83 944 Track car.
'88 924S Track car.
'89 944 Turbo
2004 Winnebago Vectra monster RV
2012 Jeep Wrangler
2014 Kia Soul
2001 Ford F350 powerstroke |
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Harm
Joined: 02 Apr 2009
Posts: 1378
Location: Holland
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| Posted: Sat Nov 14, 2009 10:27 am Post subject: Re: distributor vacuum unit |
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Hi, Grenadiers
(Congrats on your latest catch, the red euro!)
| Quote: | | Does someone else got pix of a stock 924 or Turbo vacuum advance too compare? Please share. |
Sorry, I meant the vacuum advance specifically: I understand that they look the same in your opinion?
Thanks for the offer G. but please keep your distributors in shape until we've checked the vacuum advance thingy? I know for sure I can take my vacuum advance part loose from the distributor 'cause i've done exactly that over a year ago (and forgot to take pictures, doh!).
Will update tomorrow.
Good night, Harm.
—Update the next day—
…Checking what Bosch vacuum advance is bolted up on your distributor is fairly easy once you have taken it off the engine head:
— Remove cap, rotor and dust cap so you can look inside the distributor;
— Take out the two screws that hold down the vacuum advance to the distributor body;
— Gently pull the vacuum advance away from the distributor body and turn it a few degrees clockwise parallel to the distributor body;
— By now you should be able to read the markings on the vacuum advance lever.
Text: Small # 110, Large # 2205.
The lever is not secured to the pin inside the distributor (yep, and there no markings on it for such) so be gentle and pull the lever down and it wil come off. Thats it… job done. Don't forget to take a look inside the distributor so you'll know where the vacuum advance hooks up when you return it back in place.
VW vacuum advance text: Small # 122, Large # 2201.
924 vacuum advance text: Small # 110, Large # 2205.
This Bosch hardware looks pretty much the same in lenght and diameter…
so the question is:
What do these numbers represent that makes them different?
The easyest way to find out how it would work on the toofah would be too hook it up to the distributor and take the car for a spin, so I did just that… The VW part fits to the distributor allright so it is definitly a plug! And now for the play, placed it correctly on the back of the head, I hopped in to start my toofah, and thats when it happened…
Wich had nothing to do with the distributor: everything is in place, well attached and plugged in to give away sparks at the right time, the starter goes round smooth, the fuel pump says nothing…
…
No gas
and the 30—87 trick didn't work…
What? My fuel pump died today?
Unv#kin'believable
So it is a plug, but for now no play 
Question: What do these numbers represent that makes them different?
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Porsche 924 NA 1982 LY7A/A3A3 _ Greater driving pleasure never harmed anyone. |
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Harm
Joined: 02 Apr 2009
Posts: 1378
Location: Holland
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| Posted: Sun Nov 15, 2009 11:51 pm Post subject: Re: distributor vacuum unit |
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| Grenadiers wrote: | | They are physically identical, including the vacuum advance. Same number 030, I think, on the lower shaft. Not sure of the innards below the sensor of course. I can take a pic, but not really sure I want to tear them apart. yo. |
Hi Grenadiers, I'm curious what numbers you can read on your Turbo vacuum advance, and you don't have to tear them apart IMO.
The distributor does indeed wear that 030 number at the small end.
Part numbers on the body read:
Bosch Z 44
0 237 002 054
477 905 206
btw VW distributor part numbers are:
Bosch Z 42
0 231 186 023
036 905 205 G
Next to the casted numbers on the levers and the tube to connect the vacuum hose there is a small visuel difference between the two vacuum advance units, at the point where the lever is sticking out.
The one with them plastic parts is the VW unit.
That 's all for now: I'm out trying to get the toofah to play 
I assume my fuel pump died yesterday because of old age.
It sounded loud lately though I did clean out the tank and both pumps earlier this summer as a precaution. Luckily there was very little gunk in the tank, and the pump sure sounded better afterwards.
Regards, Harm.
Update one:
Pumps are fine: Electrical issue in additional fuse board.
Will look into it next week.
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Porsche 924 NA 1982 LY7A/A3A3 _ Greater driving pleasure never harmed anyone. |
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Harm
Joined: 02 Apr 2009
Posts: 1378
Location: Holland
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| Posted: Mon Nov 23, 2009 7:02 am Post subject: Re: distributor vacuum unit |
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Started the car up today and she ran fine with the VW vacuum advance attached to the 924 distributor. I didn't get a chance to take her for a spin and get a bigger picture of the rev: The car was already placed on jack stands.
The clear edge at the upper empty attach point of the vacuum advance gives away it is of VW origin.
Regards, Harm.
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Porsche 924 NA 1982 LY7A/A3A3 _ Greater driving pleasure never harmed anyone. |
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Harm
Joined: 02 Apr 2009
Posts: 1378
Location: Holland
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| Posted: Tue May 11, 2010 9:03 am Post subject: Re: distributor vacuum unit |
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| Harm wrote: | | About a year ago I asked the Bosch GmbH store if there was any chance I could get/obtain a new exact same vacuum advance for my NA (ignition) distributor (altough it was in good order as they had tested). They checked the parts list in their computer and the answer that came out was ‘No’. But they assured me the stock one from a Golf/Rabbit would do the vacuum advance job… |
Ordered a new vacuum advance unit at the (same) Bosch Service center before the weekend and picked it up today for €38,—
The markings on the lever read like the original:
— small # 110,
— large # 2205.
Bosch Part # 1 237 122 205 (aka Porsche Part # 477 905 243 A)
Paste number 1237122205 in your browsers search engine and you should be able to find some.
HTH
Regards, Harm.
PS. I will look into fitting the Rabbit/Golf advance unit later when the car is rebuild and running fine again.
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Porsche 924 NA 1982 LY7A/A3A3 _ Greater driving pleasure never harmed anyone. |
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9XX Girl!
Joined: 20 Sep 2009
Posts: 1617
Location: Cornish Riviera SW England
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| Posted: Tue May 11, 2010 6:29 pm Post subject: |
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Thanks for posting this info Harm, always handy to know 
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924 (84) N/A 2 ltr - 5 Speed - BLACK - Project (looking for 200BHP, any ideas!)
924 (81) N/A 2 ltr - 3 Speed Auto - SURINAM RED (Metallic) - Near Original Spec (sticking with originality)
BOTH ON THE ROAD, BOTH USED EVERY-OTHER DAY |
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