Author Topic: Fiat 600 engine replacement  (Read 31694 times)

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Offline ChrisD

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Fiat 600 engine replacement
« on: July 24, 2004, 05:04:17 PM »
Hello, I am insterested on istalling a A112 Autobianchi Abarth or a Fiat 127 1000ccm engine on my Fiat 600D.
 Has enyone done this convertion to his car? Any tips you might wanna share?
 I will use the Fiat 600 gearbox, but what cluch disk do I have to use in that case?do I need any convertion to the cluch? What water pump do I have to use? In case I install a front mount radiator do I have to use a second water pump or replace the original 600 with a biger one?
 Please help. :?
Fiat 600 Abarth

Offline 1000BC

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Fiat 600 engine replacement
« Reply #1 on: August 23, 2004, 12:38:23 PM »
Use A112 water pump it's enough. Replace fan with electric fan from other car. You don't need a second water pump. You need to connect radiators in serial ( first rear and from that to the front -> engine ).
Clutch there is many variations. I use standard Fiat 600 clutch with harder springs in pressure plate. Works fine up to 60 hp.
If you use bigger clutch need to modify pressure plate and pressure bearing too. For that there is a lot of ways to do like use Fiat 127 flywheel and pressure plate + clutch + modified Fiat 600 pressure bearing with weld a certain thich shim for it.

Offline Paul vander Heyden

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Cooling and Clutches
« Reply #2 on: November 06, 2004, 04:23:43 PM »
When fitting a higher compression or larger displacement motor to a 600 chassis, there are a number of options.

1.  Use the A112 pump and an electric fan.
2.  Use an aftermarket pump (PBS) and an electric fan
3.  Use an electric water pump and electric fan.

If you are using an 8 port head with dual webers, then you will likely use the front mounted radiator.  With all of the above options I would recommend using two small electric fans as well.

As far as clutches go, I have used an 850 flywheel (or an aluminum one based on it) and an 850 pressure plate for my race car for over 10 years without any failures at all.  I simply mount a 600 ring gear on it. It does require the adjusting the location of the throw out bearing, but once done this is a reliable option.  This uses a 160mm friction disc and pressure plate.  The A112 pressure plate and flywheel did not fit the Fiat 600 bellhousing, but I have been told that it will fit in a Seat bellhousing.  Apparently they are slightly different.  The key to clutch longevity is to make sure that the step between the friction surface and the pressure plate mounting surface is maintained.

Hope this helps.  If you would like to read more, check out my site at www.scuderiatopolino.com.  Lots more information and parts.

Offline ChrisD

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Fiat 600 engine replacement
« Reply #3 on: February 08, 2005, 06:55:57 PM »
I have found a A112 903cc engine (not Abarth 1039cc) with a turbo installed on it. In order to install it to my Fiat 600 with standard 4 speed gear box, do I need the same convertions you mention on top of this post? I am planing on using Fiat 850 clutch.
 Can a PBS head be installed in this engine or do I need the 1039 block to do that???

 Thanks for the help
Fiat 600 Abarth

Offline Paul vander Heyden

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Adapting engines
« Reply #4 on: February 08, 2005, 07:23:01 PM »
Quote from: ChrisD
I have found a A112 903cc engine (not Abarth 1039cc) with a turbo installed on it. In order to install it to my Fiat 600 with standard 4 speed gear box, do I need the same convertions you mention on top of this post? I am planing on using Fiat 850 clutch.
 Can a PBS head be installed in this engine or do I need the 1039 block to do that???

 Thanks for the help


Chris,,

If this engine came from an A112, then it will have the correct rotation.  If it came from a Fiat 850 it will not.  As an A112  front wheel drive engine, it will have to have an input shaft bushing installed.  

As far as the PBS head is concerned, it will fit very nicely on the 903 block.  

When you install the Fiat 850 (160mm diameter) clutch on the 600 flywheel make sure that the guide pins and attachment bolts line up.  Also make ABSOLUTELY sure that the friction surface on the flywheel is between 0.020 and 0.030 inch (0.05-.075mm) higher than the surface where the pressure plate bolts down.  If not, there will not be sufficient friction disc pressure and you will lose the clutch in short order.

Let me know if there is anything else that I can help with.

Regards,

Paul vander Heyden

Offline ChrisD

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Fiat 600 engine replacement
« Reply #5 on: February 10, 2005, 08:07:34 PM »
Thanks for your help Paul.

 The engine comes from a A112, so I will not have any trouble with the rotation.

 About the water pump and the starter do I need the same convertions as the A112 Abarth engine that you mentioned before?
Fiat 600 Abarth

Offline Paul vander Heyden

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Fiat 600 engine replacement
« Reply #6 on: February 10, 2005, 08:57:48 PM »
The 600 water pump will not fit the A112 motor without an adapter plate.  In any case the larger motor (more horsepower) will need additional cooling and my suggestion is to use the 1050 water pump and then install an electric fan on the radiator.  The fan should suck air from in front of the radiator in to the engine compartment, not vice-versa as is with the standard pump driven fan arrangement.

Hope this helps.

Paul

Offline alapimba

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Re: Fiat 600 engine replacement
« Reply #7 on: August 26, 2005, 07:10:37 PM »
PAUL:
i'm restauring my fiat 600 d and that think you mentioned about a fan sucking air to the engine compartment is what i was thinking in do.
Can you tell me a little better how to do that? what i need to buy in order to make it working?
I have the standart 767cc engine.. maybe i'll upgrade to a fiat 127 or a112 later.

Offline bart

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Re: Fiat 600 engine replacement
« Reply #8 on: September 07, 2005, 11:07:09 AM »
i have a 1957 fiat 600 which I am about to do the same with. apparently its a straight swap. on the new engine you can run a bigger later styled webber car. more hp and better economy. i am in desperate need of floor panels etc.

Offline alapimba

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Re: Fiat 600 engine replacement
« Reply #9 on: September 07, 2005, 11:18:40 AM »
it's easy to find floors for fiat 600.
i bought mine easily here in portugal but i also saw them on some sites.

Offline guy moerenhout

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Re: Fiat 600 engine replacement
« Reply #10 on: September 07, 2005, 01:22:54 PM »
its always good  to say form with country your are ,mayby someone near you can help you
______abarth  gmr-team ______
___http://www.abarth-gmr.be ___

Offline alapimba

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Re: Fiat 600 engine replacement
« Reply #11 on: May 16, 2007, 01:03:56 PM »

Clutch there is many variations. I use standard Fiat 600 clutch with harder springs in pressure plate. Works fine up to 60 hp.


where the springs came from?

what happend if use the std fiat 600 clutch with bigger engines? it breaks?

Offline ChrisD

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Re: Fiat 600 engine replacement
« Reply #12 on: May 19, 2007, 06:44:25 PM »
 I tried to find a Fiat 850 flywheel so that I could use the 850 cluch system but I was not succes in my country. I have heard of people using Seat-Fiat 127 160mm cluch system. Do they use only the preasure plate and friction disk in the 600 flywheel or the hole 127 flywheel-preasure plate etc ???

I need to replace my cluch soon, so any help will be wellcome.

Chris
Fiat 600 Abarth

Offline zippyfiat

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Re: Fiat 600 engine replacement
« Reply #13 on: May 21, 2007, 12:49:23 AM »
Hi Chris, you can simply use your stock 600 flywheel.  Take it to a machine sho along with an 850 pressure plate and get them to redrill the flywheel for the 850 plate.  New holes need to be drilled for mounting, and the dowel pin needs to be relocated.  You should use an 850 pressure plate that has the "fingers".  You should take a look at Scuderia Topolino's technical article on clutches.  Paul says there is no problem with the reverse direction of an 850 clutch.

Gil

Offline ChrisD

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Re: Fiat 600 engine replacement
« Reply #14 on: May 22, 2007, 05:19:22 PM »
Thanks for the info, but I leave that as the last solution. 850 parts are becoming rare in my county so I prefare to use an easier part to find in lockal stores.
 The 127 flywheel has the same diameter with the 600 flywheel? I f yes, I can use that one with it's preasure plate and without any modifications becides the starter teeth exchange from the 600 flywheel. Any one knows or done that before?
Fiat 600 Abarth