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spark plug gaps

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Charles Myer

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Nov 17, 1999, 3:00:00 AM11/17/99
to
Two questions:

1. do 1600 single port engines use the same plugs as 1500's?

2. what is the correct spark plug gap for a 1500 engine?

Thanks

Charles Myer '72 std beetle (1500 engine)
burlington VT


ChrisHobbs

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Nov 17, 1999, 3:00:00 AM11/17/99
to
First--are you using the standard Bosch W8AC for ACVWs, or some other
type?

Charles Myer wrote:
>
> Two questions:
>
> 1. do 1600 single port engines use the same plugs as 1500's?
>
> 2. what is the correct spark plug gap for a 1500 engine?

--
Chris Hobbs and family
Leesburg VA
'79 Beetle Vert--two '74 412 Wagons--'67 Type 2 Crewcab

To reply, please remove the "NOSPAMs" from my address.

John Connolly

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Nov 17, 1999, 3:00:00 AM11/17/99
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depends on ignition system. Stock is .028".
John

ChrisHobbs <ChrH...@mindspring.comNOSPAM> wrote in message
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David Honan

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Nov 18, 1999, 3:00:00 AM11/18/99
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What should I set a 1600 AS Engine with a newly installed Crane Cams XR 700.

David

In article <38337...@news.sisna.com>, "John Connolly" <con...@sisna.com>
wrote:

GazMP

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Nov 18, 1999, 3:00:00 AM11/18/99
to
Stock motors irrelevant of cc use the same plugs. Obviously head plug hole
depths matter, but they aren't standard heads.
The plug I've used which isn't a recommended plug is the Champion L82YC.
The ND (Nippon Denso) equivalent to this is W20FP-U.

--
Gaz
The views expressed here are not necessarily those of my company, not
necessarily those of mine and probably not necessary.

For all VW related questions, visit the Ramva index at
http://www.ramva.vwmagazine.com or visit my homepage at
http://www.bug-bits.freeserve.co.uk/

** Remove .nospam from address to reply directly from newsgroups **
Charles Myer <cm...@pop.uvm.edu> wrote in message
news:3833644B...@pop.uvm.edu...


> Two questions:
>
> 1. do 1600 single port engines use the same plugs as 1500's?
>
> 2. what is the correct spark plug gap for a 1500 engine?
>

John Connolly

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Nov 18, 1999, 3:00:00 AM11/18/99
to
.040" is what I would set it at.

John

David Honan <Da...@honans.demon.co.uk> wrote in message
news:David-18119...@158.152.201.11...


>
> What should I set a 1600 AS Engine with a newly installed Crane Cams XR
700.
>
> David
>
>
>
> In article <38337...@news.sisna.com>, "John Connolly" <con...@sisna.com>
> wrote:
>
> > depends on ignition system. Stock is .028".
> > John
> >
> > ChrisHobbs <ChrH...@mindspring.comNOSPAM> wrote in message
> > news:38336A1F...@mindspring.comNOSPAM...
> > > First--are you using the standard Bosch W8AC for ACVWs, or some other
> > > type?
> > >
> > > Charles Myer wrote:
> > > >

> > > > Two questions:
> > > >
> > > > 1. do 1600 single port engines use the same plugs as 1500's?
> > > >
> > > > 2. what is the correct spark plug gap for a 1500 engine?
> > >

TQuan

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Nov 18, 1999, 3:00:00 AM11/18/99
to David Honan
I would say .040 but I think it depends alot on the cr. I have a 1600
with a MSD 6A and I got a set of W8AP set at .060. I had it set at .030
but the motor started running better and better as I opened it up. I
guess a CDI unit has alot of pop. I don't know about your Crane but my
MSD also adds multiple spark up to about 3000 rpms.

-Terry

GazMP

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Nov 18, 1999, 3:00:00 AM11/18/99
to
David, plugs need to be 0.7mm for a stock"ish" road use motor.

--
Gaz
The views expressed here are not necessarily those of my company, not
necessarily those of mine and probably not necessary.

For all VW related questions, visit the Ramva index at
http://www.ramva.vwmagazine.com or visit my homepage at
http://www.bug-bits.freeserve.co.uk/

** Remove .nospam from address to reply directly from newsgroups **

David Honan <Da...@honans.demon.co.uk> wrote in message
news:David-18119...@158.152.201.11...
>

Charles Myer

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Nov 18, 1999, 3:00:00 AM11/18/99
to

ChrisHobbs wrote:

> First--are you using the standard Bosch W8AC for ACVWs, or some other
> type?
>

> Actually I use NGKs. I put a set in last summer when I first got the
> car and thought I had a 1600 not a 1500. IIRC, they came pregapped at
> something like 0.26-0.28. I checked.

> Since then they keep getting sooted up from a rich mixture - carb seems
> to be adjusted properly. I just thought maybe i got the wrong ones for
> my engine.

> Spark plug wires are new. Anyway, I've been complaining about this for
> a while and am going thru the engine piece by piece to find the source
> of this sooting/poor & rough idle. I rebuilt the carb. A new coil
> and distributor pieces should be here shortly. Frequent readers of
> this newsgroups will have heard all this before...thanks for all your
> suggestions

Charles myer '72 std beetle
burlington VT

VolksFiend

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Nov 18, 1999, 3:00:00 AM11/18/99
to
>The plug I've used which isn't a recommended plug is the Champion L82YC.

....now this isn't wholly scientific..however...when I lived in NY...which of
course has colder winters then here in NC..I noticed a trend at my favourite
local junkyard...many of the VW's in the yard had champion plugs...so being an
inquisitive lad I removed the engines and stripped the heads from perhaps 15
motors...of these aprox. 10 had champion plugs....EVRY one with the champions
had cracks around the spark plug bosses...of the others...one did...the rest
had good salvageable heads...as I said this is unscientific...and I'm sure that
in a perfectly running motor with the cooling flaps in place and correct
jetting you would be fine...however..it was a lesson I never forgot...since
then I have seen numerous other confirmations that for some reason the champion
plugs do not seem to expand and contract at an acceptable rate for a VW
motor....run them if you wish.....but consider yourself warned...

...Gareth

Aussiebug

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Nov 19, 1999, 3:00:00 AM11/19/99
to cm...@pop.uvm.edu
Charles,

I have a 1500 with 1600 cylinders/pistons.

Both use Bosch W8AC, or NGK B5HS plugs. Champion L88 or similar can be
used too but Champions have a cut thread - not rolled, and so they are
harder on the soft aluminium head threads.

I have found the NGKs very good. Less sooting than the Bosch, and they
seem to have a wider heat tolerance.

The B5HS NGK numbers mean
B - 14mm thread
5 - heat range. 4 is a hotter running plug, 6 is cooler running.
H - 1/2 inch long thread. Later heads (type4s and some Beetle heads) use
the longer NGK E (extended 19mm) threads.
S - standard electrode. Can use Y (grooved electrode) in the beetle
too.

Setting for both Bosch and NGK plugs in standard ignition engines are
0.028inch (0.7mm)

You could try using the hotter B4HS plug to help reduce the sooting.
Worn rings will give a similar effect to sooting - checked the
compression lately?

1500cc in a 72 car is unsual - what's the engine number (I'm curious)?

--
Rob
http://www.geocities.com/motorcity/lane/1970
1970 1500 beetle, one owner, 248,000 miles on it's original engine
Being restored after "wearing" a Ford on 1 April 1999.

In article <38340B1D...@pop.uvm.edu>,

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