Author Topic: carb for a tunned 650cc engine  (Read 1867 times)

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Offline alapimba

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carb for a tunned 650cc engine
« on: January 19, 2012, 11:48:31 AM »

I have a fiat 500 with a 650cc engine, 35/75 camshaft, 4kg flywheel, replica of record monza exhaust, high compression cylinder head with 28/35 valves.
I'm running it with the original weber 28 imb but i'm very unhappy with it. idles bad, can't tune it properly and i guess i'm not getting everything fomr the engine due to this carb.

Anyone has something bigger to sell?


Offline sime1600h

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Re: carb for a tunned 650cc engine
« Reply #1 on: April 01, 2012, 09:18:07 AM »
On you can buy inlet for 40DCOE and buy one carb .

Offline guy moerenhout

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Re: carb for a tunned 650cc engine
« Reply #2 on: April 01, 2012, 10:52:23 AM »
best results with the intake manifold that is togheter with the valvecover .
But with the 28 mm carb you can also have good  results ,see the FSO  gr 2 cars
______abarth  gmr-team ______
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Offline Alfons1972

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Re: carb for a tunned 650cc engine
« Reply #3 on: April 02, 2012, 07:45:05 AM »
there are many carbs you can use.
original Abarth are:
- Solex C28 IB-2 (very hard to find!) I've got one and it is very nice to drive. It has a 25mm venturi (Weber 28 has a 23mm venturi). But I do not sell
- Solex F34PBIC on the special valve cover. Original ones cost about 600 Euros. There are offered many PBIC, but mostly not fitting to the Fiat-2-cylinder engine... And it's hard to find the fitting idles and even more hard to find the correct venturi. I have one, but do not sell. I could sell a different 34PBIC, but not fitting venturi, idles etc.
- Dell'orto FZD 32-28. Many use that carb and it is said, it runs good...
- "Il Motore" in Hamburg, Germany offers Webers made up to 30mm. I've been said it is quite good: [nofollow] Just ask him.

If you want original Abarth, you should look for a Solex carb. If you do not mind, then the Dell'orto would be a good choice...
I'm looking for original Abarth parts for my Fiat 500 and Fiat 600 (want to build a derivazione 750).

please email me, if you want to sale... Thank you!