| [ Total Views: 997 | Total Replies: 19 | Thread Id: 99723 ] |
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 smithy68
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| posted on November 18th, 2012 at 08:03 AM |
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Starter motor 12v on 6volt trans
Can anyone tell me what is involved to run a 12volt starter on a 6 volt flywheel, e.g changing the throwout gear on the starter, etc?
Is it an easy mod?
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southspark
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| posted on November 18th, 2012 at 08:20 AM |
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I would leave the 6v starter & change the solenoid to 12v (grey motor early holden is the same but 12v) A lot less hassle
Paul
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empi
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| posted on November 18th, 2012 at 08:21 AM |
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change the brass bush in the gearbox bell housing, you will need a conversion bush 6v to 12v, engine will need to come out to install.... just did one
this weekend.
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empi
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| posted on November 18th, 2012 at 08:22 AM |
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this will allow use of 12v starter
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sikras
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| posted on November 18th, 2012 at 08:42 AM |
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is it woth while changing from 6 to 12, and if so does any1 sell a kit form of everything you need ?
Or is there a thread in this forum already relating to this ?
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empi
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| posted on November 18th, 2012 at 10:07 AM |
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Buy a conversion bush and a new starter motor. a mate just purchased all the parts from Cip1 and they were delivered to his door in 4 days.
A 6v starter will work with 12v system, it might spin a bit faster and wont live as long.
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empi
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| posted on November 18th, 2012 at 10:14 AM |
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pretty simple process.
drop engine , remove starter, use a centre punch or tap (tap & die kit i used the punch), tap the old 6v bush out from starter side into
bellhousing, insert 12v conversion bush! fit 12v starter re fit engine connect all wires and hey presto job done.... assuming u have converted the
rest of the car to 12v.
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vwo60
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| posted on November 18th, 2012 at 10:27 AM |
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Remove the starter, then using a M12 tap simply tap the starter bush, when the tap reaches the engine case it pushes the bush out, all with out
removing the engine, done it quite a few time, i have not tried to run the 12 volt starter on the 6 volt fly wheel, but the ring gear is different and
the pinion will not mesh, i ran a 6 volt stater on 12 volts for years in one of my daily drivers.
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AA003
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| posted on November 18th, 2012 at 03:06 PM |
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Isn't the flywheel different?
I read it on samba, so it must be correct.
Sometimes Volkswagen dealers sell spare parts. Amazing isn't it!
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 vw54
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| posted on November 18th, 2012 at 03:24 PM |
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the flywheels are different dont mix n match or u will have problems
as well as the drive gears on the starters
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OZ Towdster
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| posted on November 18th, 2012 at 05:08 PM |
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As said above just keep using the 6volt starter , the only downside is that the starter spins pretty quickly which in the long term will chew the side
of the teeth of the flywheel , but when i say long term , i mean it'll take several years for it to do any serious damage to the flywheel .
Don't let body work get in the way of real suspension travel
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southspark
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| posted on November 18th, 2012 at 07:19 PM |
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To stop the flywheel getting chewed out refer to my first post,as for wearingout the 6v starter starts the engine up quicker therefore the its working
for a shorter time=same wear as 12v.
Paul
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mackaymanx
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| posted on November 18th, 2012 at 07:28 PM |
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This is what you need. Industrial starter motor 12 volt with 6 volt pinion and shaft. This would bolt straight in but good luck finding one.
Quote of the week
"Do I wish to send them to you again, nope, no interest can't be bothered really, to much hassle for little or no return."
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Matt Ryan
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| posted on November 19th, 2012 at 08:06 PM |
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12 volt solenoid off a holden grey motor is the go. It stops the pinion gear on 6volt starter from slamming twice as hard against the ring gear due to
twice the voltage. Also, because the pinion gear is not travelling as fast along the heilix that is machined into the shaft, it won't be spinning
twice as fast when it hits either.
It's the perfect solution, gears are perfectly matched and meshing at the right speed and when they are engaged and the starter actually starts
spinning, it spins real quick and gets you going with the merest touch of the key.
Maybe try some holden forums, or do what I did and go to a local holden club show and buy one at their swap meet. I got mine for $20.
Definately fit a new starter bush while you're at it.
Try emailing this guy on ebay? http://www.ebay.com.au/itm/RECONDITIONED-12-VOLT-BOSCH-STARTER-MOTOR-SUITS-FE-FC-FB-EK-EJ-HOLDEN-GREY-MOTOR-/170897198890?pt=AU_Car_
Parts_Accessories&hash=item27ca444f2a
Regards,
Matt.
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southspark
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| posted on November 19th, 2012 at 08:25 PM |
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I have a solenoid for $30 or reconditioned starter with 12v sol. for $120 + shipping.
Paul
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68AutoBug
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| posted on November 19th, 2012 at 09:30 PM |
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| Quote: | Originally
posted by AA003
Isn't the flywheel different?
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Yes, 12 volt and 6 volt have different numbers of teeth on the flywheel and starter pinion..
looks like the holden solenoid is the way to go...
and fit a new 6 volt bush with a bit of grease on it..
anyone got the numbers for the holden solenoid??
I presume it will be a BOSCH Australia..??
cheers
LEE
- [size=4]Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY--- [/size]
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psimitar
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| posted on November 19th, 2012 at 09:55 PM |
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| Quote: | Originally
posted by empi
this will allow use of 12v starter
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12v and 6v flywheel have different number of teeth on ring gear and starter toothed wheel needs to match this.
Stick with the 6V starter and if the box is for a 12v then just get the correct conversion bush. No real need to change the solenoid to 12v so long as
you don't have to crank the thing for more than 5-6secs to start. Excess starting will make the motor rather warm and if it gets too hot the motor
winding enamel will fail and the starter will short out and maybe even catch fire.
BUT loads of peps use 6v with 12v electrics without any problems. I mean if your engine don't start within 10-15 secs then there is something wrong
with it 
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veedubberpaul58
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| posted on November 20th, 2012 at 07:14 AM |
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I can now offer a Cranky kit starter complete (or kit only) to suit a 6V ring gear if you want to go down that path if you require a little extra
power
these are self supporting starters so theres no mucking around changing bronze bushes in bellhousings etc...ever!!!
PM me if interested or email fit-turn-tech@hotmail.com
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Matt Ryan
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| posted on November 20th, 2012 at 09:07 PM |
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| Quote: | Originally
posted by psimitar
| Quote: | Originally
posted by empi
this will allow use of 12v starter
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12v and 6v flywheel have different number of teeth on ring gear and starter toothed wheel needs to match this.
Stick with the 6V starter and if the box is for a 12v then just get the correct conversion bush. No real need to change the solenoid to 12v so long as
you don't have to crank the thing for more than 5-6secs to start. Excess starting will make the motor rather warm and if it gets too hot the motor
winding enamel will fail and the starter will short out and maybe even catch fire.
BUT loads of peps use 6v with 12v electrics without any problems. I mean if your engine don't start within 10-15 secs then there is something wrong
with it
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It's not cranking time that causes problems, a tuned engine should have no probs. As in my post above it is the speed that the pinion gear is
spinning at and how hard it is thrown towards the flywheel that causes problems.
Leaving a 6volt solenoid on will result in a chewed ring gear eventually. It will take a few years but it will happen. If you can get a 12 volt
solenoid or a 6v starter that has one fitted they are the two easiest aproaches to fix this problem.
Regards,
Matt.
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southspark
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| posted on November 20th, 2012 at 09:36 PM |
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Matt it is good to see advice given by somebody who knows the subject & can explain it clearly !
Paul
ps.I have only 40 yrs as auto elec. experience what do i know?
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