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Transmission to Chassis Ground Strap

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Lateral Wolfsburg Wizard

480 posts ยท joined Sep 2011 ยท

#940445
Hi guys

I am slowly tracking down a number of issues with my newly purchase 1967 1916cc beetle.

Whilst having a look under the car I noticed that it does NOT have a Transmission to Chassis Ground strap.

From my "googling" I assume that this is not desirable as it can cause a variety of problems include using the accelerator and clutch cables as "earth" cables that can cause them to heat up!

Also, yesterday I was at the auto electrical place having my VDO electronic speedo fixed and I asked them about the accuracy of oil temperature gauges. I was told that it was very important that they rear of the car is grounded correctly otherwise the accuracy of the gauges will be affected.

Looks like I'm off to Vintage Vee Dub Supplies tommorrow!

Regards
Greg

Bizarre Moderator The artist formerly known as blue74l

12,789 posts ยท joined Aug 2002 ยท

#940447
If it has a solid mount it would not need one

Like in the pic but without the red poly bits
Futue te ipsum!!!

Camo Custom Title Time!

1,936 posts ยท joined Oct 2007 ยท

#940455
Definitely get one as ever time you start the motor, all the amperage required to the starter motor will be tying to use the other paths that you mentioned.

Kev
I thought rebuilding a VW would be cheap - Shit I was wrong, just don't let the wife know !!!!

Click here for my (slowy) modded 1961 Beetle build.

Lateral Wolfsburg Wizard

480 posts ยท joined Sep 2011 ยท

#940459
Thanks guys

Bizarre, it uses the standars rubber mounts.

Regards
Greg

bajachris88 The international telephone dialing code for Antarctica is 6

6,661 posts ยท joined Apr 2005 ยท

#940466
I got a strap from supercheap. they have universals... does the job well ๐Ÿ™‚
(รด_!_/รด) (รด_!_/รด)
69' baja: kombi box, thing spindles, irs, disc front, type 3 rear drums, 2 inch lift kit, 31x10 rears. ๐Ÿ‘
New engine in process: 94mm p&bs, 74mm C/w chomol Crank, 35.5x39 SP heads, turbo. Wierd combo, hopeful torque monsta!

psimitar Son of Jim - Creator of Good

2,506 posts ยท joined Jan 2009 ยท

#940481
Yea, Supercheap one works perfectly well ๐Ÿ™‚

I think the chassis is M10 stud and gearbox uses M8 studs so if you can't find a strap with those ends then buy one with 10mm holes either end and use a few penny washers on the gearbox lug ๐Ÿ™‚
madness is in the eye of the beholder ๐Ÿ‘

Lateral Wolfsburg Wizard

480 posts ยท joined Sep 2011 ยท

#940489
Thanks guys

Should I use 2 or just one? Is 2 going to be even better than 1??!

Regards Greg

dangerous 23 Windows of Awesome

5,901 posts ยท joined Jan 2005 ยท

#940493
It is SO important that VW uses a plated stud and nut and washer on the tranny especialy for better conductivity.
westi wrote:That's mad Alan.

Lateral Wolfsburg Wizard

480 posts ยท joined Sep 2011 ยท

#940512
Hi Dave

This is the gearbox that you did for Stenguns back in 2009 for his 1967 car.

I just had a look at the Bentley manual for a 1967 to see where the ends of the strap connect and I can see where it connects to the transmission...where is the best place to connect to the body side of the mount?

Also, is 2 better that 1 strap?

Regards
Greg

Lateral Wolfsburg Wizard

480 posts ยท joined Sep 2011 ยท

#940550
Hi guys

Here is the latest update.

I went and purchased 2 straps and fitted them to the transmission.

I have attached a photo.

Regards
Greg

1 attachment ยท Log in to view

HappyDaze Superannuated

2,887 posts ยท joined Jun 2009 ยท

#940555
Wow, that's really getting down to earth.๐Ÿ‘
I'd rather wear a Beetle out by racing it than by polishing it!

Lateral Wolfsburg Wizard

480 posts ยท joined Sep 2011 ยท

#940565
Yep! I thought that it would be better to go over the top and make sure that I wasn't going to have an issue with a bad earth.
Regards
Greg

hellbugged 48's and straight cuts

5,080 posts ยท joined Apr 2003 ยท

#940580
So you have Stenguns blue car or just the gearbox ?

psimitar Son of Jim - Creator of Good

2,506 posts ยท joined Jan 2009 ยท

#940602
that'll keep ya trouble free for many moons ๐Ÿ™‚
madness is in the eye of the beholder ๐Ÿ‘

Lateral Wolfsburg Wizard

480 posts ยท joined Sep 2011 ยท

#940618
Hi Daimo

I have the whole car. I purchased it just before Xmas and am in the process of working through a list of "issues" with the aim of getting it to be a reilable daily driver.


Regards
Greg

hellbugged 48's and straight cuts

5,080 posts ยท joined Apr 2003 ยท

#940622
Ahhh okay..... I passed you when you were driving back south then...... A km or so south of nambucca and gave you a wave from my white beetle.

Good looking ride, was glad to see it out and about

Lateral Wolfsburg Wizard

480 posts ยท joined Sep 2011 ยท

#940642
Ha!

Small world!

Regards
Greg

Lateral Wolfsburg Wizard

480 posts ยท joined Sep 2011 ยท

#940643
Update

I just took the car for a test drive and there is a big difference with the reading on the AMP guage.

Prior to installing the earth straps, it was reading just under 12 volts, now it is reading almost 13 volts.

Regards
Greg

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts ยท joined Aug 2002 ยท

#940644
Lateral wrote:Update

I just took the car for a test drive and there is a big difference with the reading on the AMP guage.

Prior to installing the earth straps, it was reading just under 12 volts, now it is reading almost 13 volts.

Regards
Greg
I remember a beetle that the headlamps [QHalogen] used to go dull when changing gears because it had no earth strap to the gearbox or engine...
I always use a long new zinc plated bolt to go right thru the floor with the earth strap near the battery and the gearbox one underneath so they have a perfect connection..
using the one bolt...

You did a great job.. many people just leave them off when they have the gearbox out... it doesn't have to be a strasp either.. a heavy cable will do..
I make My own from a long battery strap..

another one to the engine doesn't hurt either..

cheers

LEE
- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

AA003 Custom Title Time!

1,189 posts ยท joined Oct 2011 ยท

#940658
Lateral wrote:Hi guys

Here is the latest update.

I went and purchased 2 straps and fitted them to the transmission.

I have attached a photo.

Regards
Greg
I like it when someone does an electrical job correctly!๐Ÿ‘
I read it on samba, so it must be correct.

Sometimes Volkswagen dealers sell spare parts. Amazing isn't it!๐Ÿ˜‚

Lateral Wolfsburg Wizard

480 posts ยท joined Sep 2011 ยท

#940681
There's nothing like a bit of overkill ๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘

AA003 Custom Title Time!

1,189 posts ยท joined Oct 2011 ยท

#940683
Lateral wrote:There's nothing like a bit of overkill ๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘
That's not overkill! ๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘

That's overkill!
I read it on samba, so it must be correct.

Sometimes Volkswagen dealers sell spare parts. Amazing isn't it!๐Ÿ˜‚

Lateral Wolfsburg Wizard

480 posts ยท joined Sep 2011 ยท

#940684
There's nothing like a bit of overkill ๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘

Also, as an aside, yesterday I was getting my VDO electonic speedo fixed and asked the guy to check the other gauges and I asked him how accurate the VDO Oil Temperature gauges were. He said that the gauges and senders are very accurate that that it was very important that both the front and the rear of the car have a good earth otherwise there will be a difference in impedance and that can cause gauges to be inaccurate....

Regards
Greg

vlad01 Compulsive Aussie Vee Dubber

4,270 posts ยท joined Jun 2010 ยท

#940713
dangerous wrote:It is SO important that VW uses a plated stud and nut and washer on the tranny especialy for better conductivity.
copper plated yes?

71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts ยท joined Aug 2002 ยท

#940749
Bizarre wrote:If it has a solid mount it would not need one

Like in the pic but without the red poly bits
Hi
I would still use copper cables or straps to earth out the engine and gearbox to the chassis and battery earth/ground ....

over tiime the steel pieces will rust or corrode which will result in more resistance...
check out the older cars on the road with dull tail lamps and head lamps or one bright and one dull.. etc...
all due to bad earths...

LEE
- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

barls Administrator Causer of Chaos and Mayhem

9,474 posts ยท joined Jun 2004 ยท

#940751
Lateral wrote:There's nothing like a bit of overkill ๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘๐Ÿ‘
i follow the belief below from The Seventy Maxims of Maximally Effective Mercenaries

37. There is no 'overkill.' There is only 'open fire' and 'I need to reload.' (23 February 2004)[45]
Alternate version: There is no 'overkill.' There is only 'open fire' and 'time to reload.' (6 March 2004)(Poster sold by Tayler)
โ€œWe all pay for life with death, so everything in between should be free.โ€ Bill Hicks
the chaos project - click me