'73 Fiat Abarth 124 Rally - project

Post pics of your car in here
Post Reply
Piotrek125p
Posts: 209
Joined: Sun Dec 02, 2012 3:45 pm
Location: Lodz,Poland
Contact:

Re: '73 Fiat Abarth 124 Rally - project

Post by Piotrek125p » Sun Aug 07, 2016 8:47 am

And this is the reason why I asked Miro about pistons.

They looks like non GC pistons, in my opinion much worse than JE from GC and I was a little dissapointed that Miro don't using a top quality parts, especially if he know where he can find it. I really respect him because he is a really helpful and full of passion Fiat and genuine rallys fan, as my, so I decide to make this friendly question to get him on the best way.

This type of parts are quite popular here in "starving Poles" TC fans group, especially in domestic rally cars replicas, but personally I never want to use it in my engine, I saw this pistons and it is not as much strong as they should in my opinion.

At the end, I agree with you GC, that you are the only of real engine builders who show really much details about parts. Personally, I don't know any other person who showing his CAD designs of pistons, steel FW etc. I am very appreciate for these things, I have a lot of your drawings, notice, tips etc. on my disc and this is a real mine of information for my but ANY of this things are not use by me to copy anything.

P.
GC approved

Guy Croft
Site Admin
Posts: 5003
Joined: Sun Jun 18, 2006 9:31 am
Location: Lincoln, UK
Contact:

Re: '73 Fiat Abarth 124 Rally - project

Post by Guy Croft » Sun Aug 07, 2016 2:49 pm

I know Piotr, thanks for saying it anyway.

Supertech don't actually make race pistons fwiw, they're made for them in Argentina, that denizen and powerhouse of motorsport mfr..


G
Guy Croft, owner

miro-1980
Posts: 684
Joined: Mon Dec 03, 2007 3:40 pm
Location: Warsaw suburb , Poland
Contact:

Re: '73 Fiat Abarth 124 Rally - project

Post by miro-1980 » Wed Aug 10, 2016 7:14 pm

Piotrek125p wrote:And this is the reason why I asked Miro about pistons.
... I was a little dissapointed that Miro don't using a top quality parts
As Starving Pole I am using only production rejects.
Lets race and see if my rejects beat your top quality parts on a race track.

Miro
www.131abarth.pl
GC_93

Piotrek125p
Posts: 209
Joined: Sun Dec 02, 2012 3:45 pm
Location: Lodz,Poland
Contact:

Re: '73 Fiat Abarth 124 Rally - project

Post by Piotrek125p » Wed Aug 10, 2016 8:24 pm

Unfortunely now I using only a cheap, OE parts from 70/80's, so any racing events are out of my world.

If you feel bad when you read my post about pistons I am sorry, it was not my intention to feel you offended.

If in your opinion this case is not closed please send me a PM or call me, I don't want make a mess in this, good thread.
GC approved

miro-1980
Posts: 684
Joined: Mon Dec 03, 2007 3:40 pm
Location: Warsaw suburb , Poland
Contact:

Re: '73 Fiat Abarth 124 Rally - project

Post by miro-1980 » Wed Aug 10, 2016 8:30 pm

Hi,

Adding oil to fire is never a good idea ... but let's put an end to this side issue.

More head build pictures to follow

Miro
Last edited by miro-1980 on Wed Aug 10, 2016 8:49 pm, edited 1 time in total.
www.131abarth.pl
GC_93

miro-1980
Posts: 684
Joined: Mon Dec 03, 2007 3:40 pm
Location: Warsaw suburb , Poland
Contact:

Re: '73 Fiat Abarth 124 Rally - project

Post by miro-1980 » Wed Aug 10, 2016 8:38 pm

MORE HEAD BUILD PICTURES

Being on a tight budget we had to use whatever we had on the garage shelves:
HEAD 1 .jpg
HEAD 1 .jpg (104.25 KiB) Viewed 1230 times
HEAD 2 .jpg
HEAD 2 .jpg (102.81 KiB) Viewed 1230 times
HEAD 3 .jpg
HEAD 3 .jpg (122.11 KiB) Viewed 1230 times
Miro
www.131abarth.pl
GC_93

miro-1980
Posts: 684
Joined: Mon Dec 03, 2007 3:40 pm
Location: Warsaw suburb , Poland
Contact:

Re: '73 Fiat Abarth 124 Rally - project

Post by miro-1980 » Wed Aug 10, 2016 8:45 pm

Initially we will put it on 40IDF but ultimately it will run on this baby ...
kugel  mogel 1.jpg
kugel mogel 1.jpg (53.22 KiB) Viewed 1229 times
Miro
www.131abarth.pl
GC_93

miro-1980
Posts: 684
Joined: Mon Dec 03, 2007 3:40 pm
Location: Warsaw suburb , Poland
Contact:

Re: '73 Fiat Abarth 124 Rally - project

Post by miro-1980 » Wed Aug 10, 2016 9:19 pm

To prove there is a final benefit to all this work here is a recent picture of a car I build some years ago on a GC engine .

After many seasons of rallying it still is looking and working nicely ...

Miro
Attachments
131 on a tankstelle .jpg
131 on a tankstelle .jpg (1.09 MiB) Viewed 1225 times
www.131abarth.pl
GC_93

Guy Croft
Site Admin
Posts: 5003
Joined: Sun Jun 18, 2006 9:31 am
Location: Lincoln, UK
Contact:

Re: '73 Fiat Abarth 124 Rally - project

Post by Guy Croft » Thu Aug 11, 2016 3:44 pm

Miro, dear friend

never mind saying how long it's lasted. You get that sump off and check the rod bearings.

Ian Nixon (TC Lada) rang me today, poor guy just thrown a rod, GC built Nov 2012, raced flat out for two years then uprated with a full-spec GC 45/40 head, not a single look at the bearings in all that time. I warned him over and over.

Be warned, wet sump engines MUST have their bearings checked every FOUR EVENTS AND minimum mid season. Dry-sump engines every year.

I do say these things for a reason. It is cheaper to do it that way, trust me.

GC
Guy Croft, owner

miro-1980
Posts: 684
Joined: Mon Dec 03, 2007 3:40 pm
Location: Warsaw suburb , Poland
Contact:

Re: '73 Fiat Abarth 124 Rally - project

Post by miro-1980 » Fri Aug 12, 2016 6:45 am

Dear Guy,

The engine is due for extended inspection and it will take place prior to the next event (in September).

Thank you for the reminder. In the ,meantime - thank you for the gauges. Arrived here safely yesterday.

Rgds

Miro
www.131abarth.pl
GC_93

Guy Croft
Site Admin
Posts: 5003
Joined: Sun Jun 18, 2006 9:31 am
Location: Lincoln, UK
Contact:

Re: '73 Fiat Abarth 124 Rally - project

Post by Guy Croft » Sun Aug 14, 2016 4:09 pm

good, MM

gauges, my pleasure.

G
Guy Croft, owner

Rallyroller
Posts: 87
Joined: Tue May 31, 2011 2:40 pm
Contact:

Re: '73 Fiat Abarth 124 Rally - project

Post by Rallyroller » Sun Aug 14, 2016 7:30 pm

Hi All

Interesting info from Guy regarding strip downs. So would the cost of a dry sump system pay for itself in 1 or 2 seasons just by reduced strip down costs?

Nigel.
GC_13

Guy Croft
Site Admin
Posts: 5003
Joined: Sun Jun 18, 2006 9:31 am
Location: Lincoln, UK
Contact:

Re: '73 Fiat Abarth 124 Rally - project

Post by Guy Croft » Mon Aug 15, 2016 12:37 pm

Now that - I am NOT going to cost-up!!

G
Guy Croft, owner

miro-1980
Posts: 684
Joined: Mon Dec 03, 2007 3:40 pm
Location: Warsaw suburb , Poland
Contact:

Re: '73 Fiat Abarth 124 Rally - project

Post by miro-1980 » Mon Aug 15, 2016 7:16 pm

Returning to engine build ...

here is the almost finished engine ...
P8130742.jpg
P8130742.jpg (124.32 KiB) Viewed 1131 times
P8130743.jpg
P8130743.jpg (147.81 KiB) Viewed 1131 times
P8130744.jpg
P8130744.jpg (121.51 KiB) Viewed 1131 times
P8130745.jpg
P8130745.jpg (134.88 KiB) Viewed 1131 times
P8130746.jpg
P8130746.jpg (107.18 KiB) Viewed 1131 times
Originally I was thinking about using the original Magneti Marelli AEC 106 Raceplex ignition system with this black, flat distributor on the 124
corsa distr .jpg
corsa distr .jpg (39.3 KiB) Viewed 1131 times

but than my research showed that this system was first produced in 1975 , while the configuration of my 124 Abarth is 1973 .. so the Raceplex will go to 131.

Incidentally, research showed that this system was standard factory equipment on 131 Abarth Rally Gr 4 ex-works and many Ferrari 312 , 126 modals and Lancia Stratos Turbo Gr 5. No wonder it is so hard to find.

The coil and electronic system that went with it was a rather curious, early electronic age device with large transistors diodes, etc., and included a Magneti Marelli designed rev limiter, tacho connection etc.
Raceplex ignition .jpg
Raceplex ignition .jpg (52.71 KiB) Viewed 1131 times
I think that instead of rebuilding it we will try to replace it with simplified (not so complex as the original) system without all the extras.

Anybody knows what 1973 vintage part can replace its functions and meet the specs ?

Rgds

Miro

PS: Our distributor is NOS , never installed in pristine condition, but with no pictures of our part yet I used the pictures from Marko's - my Finish friend's page http://www.131abarth.com. Incidentally very worth visiting.
www.131abarth.pl
GC_93

Spider 1969
Posts: 122
Joined: Sun Sep 22, 2013 7:21 pm
Contact:

Re: '73 Fiat Abarth 124 Rally - project

Post by Spider 1969 » Mon Aug 15, 2016 8:30 pm

Looking good Miro. Why 40's? CSA ran on 44's. Can you share the rest of your engine specs?

Keep it up.

Charles
GC_26

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest