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  #1  
Old 05-09-16, 22:42
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metalshapes metalshapes is offline
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Spaceframe '68 Fiat 500

Question for the Mods.

Is it OK for me to start a buildthread here about my Spaceframe Fiat 500?
I built this car about 25 years ago for a buddy of mine ( I did the fabrication, he had it painted and did the assembly. he also built the engine)
I bought it from him last year.
It had been sitting for years, so I went through it.
Put on bigger brakes, 13" wheels, and after one time on the track I swapped in a 1000cc engine out of a Autobianchi Abarth.
( it had a tuned 650cc 126 engine before )
That made it a little heavier, but its still 1040Lb.

Right now I'm swapping in a BMW K1200RS engine, mated to a Hewland Mk9.

The reason it may not fit on this Forum is that I don't race it at Hillclimbs.
I run it once a month at our local gokart track, which has trackday car events for us.

I'm guessing the speeds we get up to, and the tightness of the track is about the same as some of the UK hillclimbs, so the car might end up similar to a UK hillclimb car...
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  #2  
Old 05-09-16, 22:46
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More pics.
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  #3  
Old 05-09-16, 22:53
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Bike engine.
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Old 06-09-16, 06:43
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You should enter that in a sprint or two. Looks great.
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Old 06-09-16, 07:09
kano nordie kano nordie is offline
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That does look nice, another mighty mouse, sprint or hillclimb it.
John
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  #6  
Old 06-09-16, 07:22
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Thanks guys.

I'd love to hillclimb it.
But there is only one event a year, a couple of hours drive from here ( I'm just outside of Tucson Arizona ), and unfortunately they race to SCCA rules so that means HANS devices and enough other extra safety garbage to make me loose interest...
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Old 06-09-16, 08:11
Teddie2003 Teddie2003 is offline
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Please keep posting the updates on the build.

Several cars in the UK are starting to use the K series engine as a replacement for Imp engines, mainly the K100 or K1100 as they offer similar power/revs and are a fraction of the cost. Most of them being fitted direct to Imp transaxles, but a couple have been looking at using the K1200 with a Hewland as well.
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Old 06-09-16, 08:14
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Thanks Teddie.
Yeah, I got some good info off a Imp forum...

The swaps I saw there used the unmodified BMW Bellhousing mated to the Imp tranny with a adapter plate.
That gave them plenty of space to mate a Imp flywheel to the BMW clutch basket, and then bolt the Imp pressure plate to that.

I wanted to keep my setup as compact as possible.
The Hewland I have has a different case( not the regular VW based one ) with a removable ring on the bellhouse side.
With it its stock length, without its 2.25" shorter.
I then made a new bell that replaces most of the stock BMW bell, and it is more than an inch shorter.
And a milled a bit off the gearbox flange as well.
So I lost more than 3.5" in total length ( measured from the diff centerline) or close to 4" if I would have used an adapter plate, which should help with the weight distribution...

For the clutch, I modified a Quartermaster flywheel that was made for a 351W Ford, mated to a modified Tilton pressure plate, with a single 180mm sintered clutch disc that was made for a Formula V or a 356 Porsche, or similar...

Last edited by metalshapes; 06-09-16 at 08:53.
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  #9  
Old 06-09-16, 09:59
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A little more history on the car..
It is the second to last car that I built when I was in the Netherlands, before I moved to the USA.
This is what it looked like when I saw it again, after all these years...
In great shape...
My buddy took really good care of it.
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  #10  
Old 06-09-16, 10:11
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I had a feeling I wasn't going to keep the aircooled 2 cylinder, so after I got it here I changed the brakes and I put on 13" wheels.
The rear brakes were a straight bolt on with late model Fiat 126 parts.
But the fronts were more work.
I modified some Fiat 850 Spider spindles to fit the car.
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