[T3] 73 type 3 FI ignition condenser ?

[William Jahn]

You said 1.5 oz . just judging by hand the bosch points I just got feel a lot stiffer than that.

Sent from Mail for Windows 10

From: Jim Adney
Sent: Saturday, March 16, 2019 9:31 PM
To: type3 at vwtype3.org
Subject: Re: [T3] 73 type 3 FI ignition condenser ?

On 16 Mar 2019 at 11:10, William Jahn wrote:

> I saw one on-line store selling  2 versions of Bosch points that fit
> the later Type 3´s one with the stronger spring. J-Bugs has that
> choice. 

I measured the spring tension with a fisherman's scale, which 
indicated that the 044 points pulled ~1.5 oz while the stronger one 
was ~2.5 oz. If you've read the Bill Fisher book, you know that one 
racer trick is to double up the 044 spring to get twice the spring 
force to get reliable operation at very high rpm. The stronger spring 
points makes this easy, but it's unnecessary and counterproductive 
for stock operation at normal rpm.

>  I got a set of NGK plus B6HS. Their site says not to use anti-seize
> yet when I emailed them they said just use a small amount and if not
> using a torque wrench just screw in until it stops and give them 1/3
> to 1/2 turn . The Bentley states 20 to 25 foot pounds and also states
> to use anti-seize and as most know anti-seize acts as a lube and you
> end up with a higher torque .

I agree that the 20-25 ft-lbs is too high. I use MoS2 antiseize and 
tighten to touch, then a bit snugger. I think the only time I tried 
to torque to 25 I stripped out the threads in the head. I'll never do 
that again.

>  I looked at Bosch´s site , they don´t list much and what I see they
> are all WR8AC with 5k ohm´s , I´d rather not add resistance where it
> was never designed to be.

5k is no problem, simply because the current is so tiny. Keep in mind 
that the rotor is 5k, and earlier 6 V cars used carbon core wire 
which had 20-50k, depending on the length, and still worked just 
fine.

If you use resistor plugs, you can switch the SP connectors to ones 
with zero resistance, which eliminates the connector as a potential 
trouble spot. I have those connectors if you want to switch. While I 
haven't done it yet, switching to resistor plugs is actually a nice 
upgrade, since that gets you a fresh resistor with every SP change.

OTOH, I still have some NOS W8ACs and W8APs for anyone who prefers to 
stay old school.

-- 
*******************************
Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
*******************************

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