Distributorless ignition help

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Kendoo
Posts: 22
Joined: Sun Nov 25, 2012 3:30 am
Your car is a: Fiat 124 Spider 1976
Location: Melbourne, Australia

Distributorless ignition help

Post by Kendoo »

I have just started to put in mark's distributorless ignition kit and am swapping it from the head to the block and am wondering how I get the drive gear off the old dizzy and onto the new kit, the shaft on the new kit seems very small in diameter compared to the old shaft, should the kit have come with a gear?
Matt
2014 GT-P FPV
1976 Spider 1800cc (current toy)
2011 Ford G6E Turbo
2002 Alfa Romeo 156 Selespeed (a few years back)
Datsun 1600 Rally Car (Those were the days)
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azruss
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Joined: Sun May 30, 2010 12:24 pm
Your car is a: 80 Fiat 2000 FI

Re: Distributorless ignition help

Post by azruss »

the drive thru the bottom hole is completely different that the drive on top. as i recall the early dizzies had a straight spline thats like 3/8" diameter.
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Kendoo
Posts: 22
Joined: Sun Nov 25, 2012 3:30 am
Your car is a: Fiat 124 Spider 1976
Location: Melbourne, Australia

Re: Distributorless ignition help

Post by Kendoo »

The new unit has a spline which I imagine is to take the drive gear, but the old dizzy has a straight shaft around 1/2". The new unit has a straight shaft with a spline around 3/8". Always good to find this **** out when you have stripped it all down, was hoping to take it for a drive today.

Has anyone done this conversion on a 1800 motor?
Matt
2014 GT-P FPV
1976 Spider 1800cc (current toy)
2011 Ford G6E Turbo
2002 Alfa Romeo 156 Selespeed (a few years back)
Datsun 1600 Rally Car (Those were the days)
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Kendoo
Posts: 22
Joined: Sun Nov 25, 2012 3:30 am
Your car is a: Fiat 124 Spider 1976
Location: Melbourne, Australia

Re: Distributorless ignition help

Post by Kendoo »

My god, what a halfwit I am. Took the block plug out and there is a beautiful little spline hole in there ready to go. Hope this helps someone else though, that is someone as stupid as I am.
Matt
2014 GT-P FPV
1976 Spider 1800cc (current toy)
2011 Ford G6E Turbo
2002 Alfa Romeo 156 Selespeed (a few years back)
Datsun 1600 Rally Car (Those were the days)
User avatar
Kendoo
Posts: 22
Joined: Sun Nov 25, 2012 3:30 am
Your car is a: Fiat 124 Spider 1976
Location: Melbourne, Australia

Re: Distributorless ignition help

Post by Kendoo »

Well I finally got it done and it is running sweet. Seems to have more mid range torque.

Only a couple of dramas, as it is a right hand drive had to remount the coolant reservoir to get it out of the way of the coil and the fork which holds down the dizzy had a different stud hole size from the head to the block and the block fork did not fit the new unit properly. Swapped them over and drilled out the hole (boy those forks are made out of very hard steel).

Apart from all that it went in and tuned real easy.
Matt
2014 GT-P FPV
1976 Spider 1800cc (current toy)
2011 Ford G6E Turbo
2002 Alfa Romeo 156 Selespeed (a few years back)
Datsun 1600 Rally Car (Those were the days)
So Cal Mark

Re: Distributorless ignition help

Post by So Cal Mark »

we don't normally swap the hold downs. On the block side, the inside edges of the fork need a small amount of grinding to fit the trigger unit
rodman

Re: Distributorless ignition help

Post by rodman »

So Cal Mark wrote:we don't normally swap the hold downs. On the block side, the inside edges of the fork need a small amount of grinding to fit the trigger unit
Mark is a rev limiter required ?
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Kendoo
Posts: 22
Joined: Sun Nov 25, 2012 3:30 am
Your car is a: Fiat 124 Spider 1976
Location: Melbourne, Australia

Re: Distributorless ignition help

Post by Kendoo »

Rodman,

These units will produce an excellent spark right up to 12,000 rpm. The only rev limiter I have is when I feel the power dropping off, what is that red mark on the tachometer for anyway?
Matt
2014 GT-P FPV
1976 Spider 1800cc (current toy)
2011 Ford G6E Turbo
2002 Alfa Romeo 156 Selespeed (a few years back)
Datsun 1600 Rally Car (Those were the days)
rodman

Re: Distributorless ignition help

Post by rodman »

Kendoo wrote:Rodman,

These units will produce an excellent spark right up to 12,000 rpm. The only rev limiter I have is when I feel the power dropping off, what is that red mark on the tachometer for anyway?
lmao thanks for the your input.
fiat218
Posts: 5745
Joined: Fri May 16, 2008 5:06 pm
Your car is a: 1969 124 AS spider

Re: Distributorless ignition help

Post by fiat218 »

I have it in my 79
Jim
East Grand Forks MN
1970 Fiat Spider BS1 ( FOR SALE
1969 124 AS Spider
2017 Abrath
2018 Alfa Romeo 4c Spider
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