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I''ll go second.

Post by Waxer on Thu May 14, 2009 3:31 pm

John.
You mentioned that if I fitted my 205 dizzy I could use a pipe and bend it a few times to cancel out the pulse from the vacum port.
Well, I fitted it, pain that ended up being, and fitted the pipe, stuck a few sharp bends in it.
When I stick my thumb over the end there is still quite a bit of a pulse coming through. It works but could I improve it in anyway?


Cheers
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Re: I'll go second.

Post by speedwell68 on Thu May 14, 2009 3:52 pm

Mine has a little bit of a pulse they all seem to. What is the idle like, is it at all erratic whilst the engine is warm? Are you getting full advance? You said it was a 205 dissy, but there are various versions of that. Check the exact timing settings on this page...

http://www.oldvolkshome.com/ignition.htm
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Re: I'll go second.

Post by Waxer on Thu May 14, 2009 4:05 pm

I've set it at about 7.5 and the idle seems good.

I'll have to get the code off the dizzy and scan that whole page to find what it is but I know nothing about my engine as it came from another Bus just before I bought the Bus.

I also know I didn't plug the vacum can but it was disconnected.

I'll experiment some more.
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Re: I'll go second.

Post by speedwell68 on Thu May 14, 2009 4:09 pm

You should always time the engine according to the dissy and not the engine. 7.5 degrees is probably about right, but it is worth checking full advance, just to be sure. If you are not getting erratic idle or acceleration the pulse should be fine.
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Re: I'll go second.

Post by Clarkson46 on Thu May 14, 2009 5:12 pm

WHS^^^^ the timing is determined by the distributor and not the engine. There is a lot of hype surrounding the issue of timing. In simple terms it amounts to "The bloke in the pub said it, so it must be true". Forget what the pundits say and go with Haynes, Bentley Et Al. VW spent a lot of money developing the aircooled engine, so go with VW. For example, VW never ever fitted an 009 distributor to any engine. So ask yourself this question, what are the advantages of the 009? I know this is slightly off topic, but the issue of anti pulse is again another question that has never been addressed properly. It is the case that every time you bend a pipe through 90 degrees you will restrict the flow of whatever, be it air, water or oil. So add in several 90 degree bends and you smooth out the flow by simply restricting it. This may seem patronizing, but it is simple schoolboy physics. Very Happy
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Re: I'll go second.

Post by Waxer on Fri May 15, 2009 12:53 am

I bent the pipe so the curves were pretty tight but so I didn't crimp the pipe, I blew it through to check, I could add a few more bends probably.

Whats fully advance for a 205 dizzy.
Is it 12 for vacum and 20 something for mechanical?

Cheers
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Re: I'll go second.

Post by Waxer on Fri May 15, 2009 12:54 am

The bloke down the pub was actually Mr speedwell68 Laughing
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Re: I'll go second.

Post by speedwell68 on Fri May 15, 2009 2:24 am

Waxer wrote:I bent the pipe so the curves were pretty tight but so I didn't crimp the pipe, I blew it through to check, I could add a few more bends probably.

Whats fully advance for a 205 dizzy.
Is it 12 for vacum and 20 something for mechanical?

Cheers

It depends on which 205 dissy it is exactly. There are many different versions. Post up the VW dissy number.
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Re: I'll go second.

Post by Clarkson46 on Fri May 15, 2009 2:28 am

I was referring to the 009 with the bloke in the pub. All you need to know is that it is timed at 7.5 degrees BTDC at 950 rpm and the rest follows. It is only the 009 that you worry about the advance at 3000 pm because now the idle advance will be god knows where. It is this that gives the flat spot until the revs pick up. Read the article on here about distributors

http://type2.com/

Select the Library, then 009 Distributor, then Vacuum advanced distributors vs Mechanical

Sums it up neatly.
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Re: I'll go second.

Post by Waxer on Fri May 15, 2009 8:26 am

Thanks for the advice guys, I'll get the code off it soon and research it.

I was only joking with the bloke in the pub comment. hehe
I already know the benfits of vac over mech only but the 009 was mostly fitted over ease of use and lack of anti pulse valve which I'm now discovering I may not need.
I'll keep you posted.
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Re: I'll go second.

Post by Waxer on Fri May 15, 2009 8:28 am

I did time it at tickover which is about 800rpm so when getting the number off it I will also re-time it to 950rpm. It all helps.
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Re: I'll go second.

Post by Waxer on Fri May 15, 2009 11:12 am

Beetle 1974 * 1600 Federal Manual Trans

Distributor: VW 043-905-205, Bosch 0231 170 034
Can Use: VW 113-905-205AL, Bosch 0231 146 101, VW 043 905 205 ZB (Mexico) (See Note Below)
Points: 01 011
Condensor: 02 074
Rotor: 04 033
Dust Cover: 039-905-241, Bosch 1230 500 139 > 1230 500 147
Cap: 03 010
Distributor Cap Clip: 034-905-265, Bosch 1231 251 033
Parts Kit (Shims, Washers & Hardware): 059-998-211, Bosch 1237 010 007
Coil: 00 015 (Blue Coil: 00 012)
Vacuum Can: 07 059
Ignition Wires: 09 001
Spark Plug: W8AC
Timing Set At:: 7.5deg BTDC @ 800-950rpm w/strobe and w/single vacuum hose disconnected and plugged
Advance/Retard Range: Vacuum: 8-12deg Adv; Centrifugal: 7-12deg @ 1600rpm, 20-25deg @ 3800rpm
NOTE: Volkswagen (with Bosch's help) now makes this distributor in Mexico and is available brand new and ready to install. Please click this link:Beetle (Puebla, Mexico) With Points Distributor to view the specs.



I have this one.
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Re: I'll go second.

Post by speedwell68 on Fri May 15, 2009 1:29 pm

Waxer wrote:Beetle 1974 * 1600 Federal Manual Trans

Distributor: VW 043-905-205, Bosch 0231 170 034
Can Use: VW 113-905-205AL, Bosch 0231 146 101, VW 043 905 205 ZB (Mexico) (See Note Below)
Points: 01 011
Condensor: 02 074
Rotor: 04 033
Dust Cover: 039-905-241, Bosch 1230 500 139 > 1230 500 147
Cap: 03 010
Distributor Cap Clip: 034-905-265, Bosch 1231 251 033
Parts Kit (Shims, Washers & Hardware): 059-998-211, Bosch 1237 010 007
Coil: 00 015 (Blue Coil: 00 012)
Vacuum Can: 07 059
Ignition Wires: 09 001
Spark Plug: W8AC
Timing Set At:: 7.5deg BTDC @ 800-950rpm w/strobe and w/single vacuum hose disconnected and plugged
Advance/Retard Range: Vacuum: 8-12deg Adv; Centrifugal: 7-12deg @ 1600rpm, 20-25deg @ 3800rpm
NOTE: Volkswagen (with Bosch's help) now makes this distributor in Mexico and is available brand new and ready to install. Please click this link:Beetle (Puebla, Mexico) With Points Distributor to view the specs.



I have this one.

It is basically a stock Bosch 034 then. Just time it as stated there and all will be well.
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Re: I'll go second.

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