131mirafiori forum

Hi All,

Have a 32 adf carb which ran well on my last 2ltr twin cam, however, I have put it on a different 2ltr with a K&N filter and it feelsnlike its underpowered and uses more fuel. The engine feels flat. I left it into a garage to see if they could sort it but no avail.
Would I be correct in thinking that the problem is due to the K&N filter allowing/drawing in more air than required thus making the mixture wrong. I have checked all fuel lines and filters, the timing etc but cant sort it. They only adjustment I can see on the carb is to adjust the tick over via the mixture screw.

I can only squeeze 80-85mph out of it at the mo. 
 
Can anyone tell me the correct size/specification for the original jets, and if I need to re-jet the carb to cope with the extra air flow, what size should I use and where can I source them.

Many thanks in advance

Regards

Keith

you don't need to rejet the carb, you probably need to adjust it properly, or perhaps to rebuild it (throught cleaning and new gasket and membranes)
i bolted on K&N straight onto my weber 42/42dgv and it ran excellent on petrol and LPG. i just needed to adjust the idle a bit.

by the way, might be that 32 is a bit "slim" for a 2 liter???

yes, it is to small, that carbs on my 1.4 cl . all 2.0ltr have the 34 adf . You can 't adjust any thing ,just float level and idle mixture ,
 Take it apart blowing all the jets out ,there most likely dirt in a jet some where and check accelerater jet pump squirting in
jason

it may well be a timing problem, even a couple of degrees retarded will give a noticable power loss and more fuel useage.

Do yourself a favour, track down a 34 ADM weber, there are always some on Ebay OZ, (www.ebay.com.au) you can pick them up for $30 to $50OZ. They were standard fitment to some Ford "Falcons" over here for a lot of years, they sold in the 100,000s. I got my last one for $28 including postage. They're the same as a Fiat 34 ADF/ADFA, except the main venturis (chokes) are 3mm larger on the primary and secondary. They're a great improvement over the stock Fiat carb. I've got a couple of Fiat carbs in the shed, I may even have an ADM if you're interested.

http://cgi.ebay.com.au/FORD-XE-XF-34-ADM-WEBER-CARBURETOR-COMPLETE-VGC_W0QQitemZ140357866359QQcmdZViewItemQQptZAU_Car_Parts_Accessories?hash=item20adfb1377

A rebuilt one ready to go. Swap a couple of bits off yours, bolt it on and drive off in to the sunset.

Once did this the other way round, fitted a 34 adf sport carb onto a 1600tc supermirafiori and that went better

Anybody got a spare one hanging around

I should have at least two single carbs for 131 . I am not  sure what type  they are , but both are professionally rebuilt and in absolutely working condition.

If anybody is interested I can check in my garage  ...

Miro

I think the carb suit to a small engine like 1.4L and not for 2L, better change to bigger size one than you know how fast yours bella can go ;D ;D

Seems far too small to me.   I have two 45mm for my 2 litre engines.

Hi Keith.What Tas 131 has said would be the best option for the road.Twin 45s are all about power to WEIGHT ratio thats why i have twin 40s with full head job. Cheers Gary

I am surprised with your SHAPE you can get away with those little 40mm carbs as the wind resistance would be vast.

Gary and Geoff........you two would make a great double act!!!  Any of you racing on the 6th? I,m off to Scotland on the 9th for xmas so will be making an effort to get to  Manfeild before I head off. I,ll look out for you if your there. ;)

Lads the way you 2 slag each other aROUND makes me laugh LIGHTly

Hi Paul .We will be there.Last one for the year.Hi Nick. Whats Slag. Life is to short .Better to laugh that cry.Should get Paul to  bring over some Chocolate fish for Xmas for you. Did you get the rain where you live as it didn't look to good on TV.Cheers Gary

Gary slagging is having a poke at someone like having a laugh etc, chocolate fish would be very nice Paul if you can? we got the rain all right but no floods thank god we are on high enough ground i hope :P :P :P

Thanks for that ,I hope Geoff understands that. as no doubt he will look at the other ways  of  interpreting the word SLAG.With your  rain and our earthquakes.Good test for 131s . Gary

Taking the piss!

Yes Paul I will definitely there on the 6th.   There is also another meeting at Manfield on the 20th and I hope to be there for that one too.  I have just ordered two sets of red stuff pads for the E30 and will remove the ABS system in the next week to further improve the brakes.

Just for the record if you can't take and also dish out a bit of shite don't visit us here in NZ.   Taking the piss is a national pastime.  Gary is a grand master but I am a novice.   I just need to practice, just as he needs to practice going fast on manfield circuit hahaha.   There's chocolate fish at stake but knowing the cheap bugger he will buy choccy fish with an old use by date on them.

"Iwant some chocolate fish"

If you want chocolate fish get your backside over here and beat me on the track.  The chocolate fish I will win from Gary are already past their use-by date so you better hurry.  In addition it's summer here so they are getting softer by the day.   Gary is getting softer every day too from eating all that cake.

I too have the 32 weber on the 2.0 t,c sport i have bought. If it is meant to be the 34 why ???? do some  2.0l twin cam's have & use the 32 ......

should be a 34adf on a 2000 131, I think someone must have changed the carb ?