twin 40 webers

[mark]

Hi everyone, Ive just got hold of a pair of Twin 40 DCOE Webers and wondered if it is worthwhile fitting them to my 2.0 coupe. Is it possible to get an inlet manifold ? Is it more trouble than its worth because I will just list them on Ebay if thats the case. I dont want to set myself up for a load of work and the grief that may be involved in getting them set up properly. All info and advise would be very helpful.          Cheers Mark.

[HFStuart]

If you can get hold of the right manifold (offset to clear the distributor) and you can jet them up correctly then it's most definitely worth it.

[mark]

Thanks Stuart, do you or any other members know where I could get an offset manifold and more importantly what kind of money would one be ? Do you know who sells the correct jet kits ?  Many Thanks Mark.

[thecolonel]

Eurocarb sell jets etc. also a lot on ebay, best to check with Guy Croft for the correct jets and chokes etc.
You'll probably also need a Malpassa/Filterking fuel filter/pressure regulator to set the fuel pressure.

Geoff

[mark]

Thanks Geoff,  I will take a look at that hopefully over weekend. Cheers Mark. 

[HFStuart]

Mark,

Guy Croft used to do the manifold but I believe he's deleted them now - might be worth asking whether he has any left or how many orders he'd want to get a new batch cast.

They come up every so often on E-Bay for the Fiat Twin Cams - I suspect one of these could probably be used and or adapted for the Beta.

If you're feeling flush you could even buy a new one

http://cgi.ebay.co.uk/FIAT-124ST-125-132-131-TWINCAM-INLET-MANIFOLD-45-DCOEx2_W0QQitemZ200452207298QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item2eabe1f2c2

[75coupe]

Hi Mark,

I agree with Stuart it is definately worth fitting the DCOE's. It will give you at least an extra 10BHP with no other mods, but more importantly easier starting, better driveability/throttle response and better part throttle economy if jetted correctly.

I fitted twin 45 DCOE's to fairly standard motor and was instantly converted. I purchased a manifold from a Guy in Greece, I think his ebay name was motorman253, I paid around 97 pounds for it, which is OK, but not as good as the Guy Croft one, it's flow path is not quite as direct. I am also looking for a GC one....

The linkage can be made up adapting the standard linkage/cable fairly easily, I can send pics if you are interested.

The only downside is the induction noise, (but it is a nice sound....) but this can also be subdued with an air box. You may have to move the radiator forward too if you want to fit longer air horns, although with short horns it will just clear - I canted the original forward, but an IE or VX rad is a better option if you can find one.

Have attached pics of manifold - the second pic I took when I was swapping cams - you don't have to remove it to fit the manifold!

[mark]

Thanks for the advise and cracking pictures, they look really good when fitted. I will have to see if one comes up for sale and at what price ( another mortgage default then ) and hope her indoors doesnt ask to many questions      Cheers Mark.

[Pete]

As if by magic this turned up on ebay today.

http://cgi.ebay.co.uk/Offset-inlet-manifold-Fiat-lancia-twin-cam-131-sport_W0QQitemZ320505856514QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item4a9fa34202

[rachaeljf]

Careful with those eBay manifolds - a 124/131 manifold is for an upright engine. You need the Beta manifold with the right flange angle to set your carbs horizontal.

Cheers R

[75coupe]

Yes you are absolutely right. The Beta engine is canted backwards 20 degrees. The manifold I obtained had the correct angle. The 124/131 type can be used but an adapter plate must be made or the manifold machined to the correct angle. most DCOE manifolds have a slight upward tilt of about 5 degrees, you can go up to 7 degrees tilt, after that you can upset the float chamber level.

There is no easy way to tell if the manifold is for a beta, it is very similar to the 124/131 type, the tell tale is usually the the face that bolts to the head, on the Beta it is almost at 90 degrees to the manifold runners, on the 124 type it is at more of an angle - hard to explain but best judjed by looking side on.

happy hunting!

[jean-paul]

hi there this is first time i write but i am doing modifications on my beta also i purchased a guy croft manifold from omicron engineering uk and regards jetting of webers, eurocarb will help you lot also check out for trumpets if you keep everything standard make long trumpets

[75coupe]

Mark,

If you still need one, I have one listed on ebay.com.au at the moment, it is the right offset etc.

Thanks

[daye]

hello

I'm make the same chnages in my beta

I have a intake manifold from 131 but's the angle isn't good

I search a adaptator plate or a GC intake

Any knows how throw a adaptator??

Thanks

[daye]

any can help me?

i search a good intake manifold or adapter plate to use a fiat 131 maniflod

[daye]

any news?

thanks