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Posted by: flmont Mar 13 2019, 10:19 PM

would these carbs be good for a type 4 2.0 build bigger crank and cam set up ,they are asking for 350.00 OBO,..Thanks

Posted by: wes Mar 14 2019, 12:25 AM

I have 40 Dellorto’s on my 2056 and think they’re a perfect set up!
That’s I believe a good deal if you’re talking about $350 for both. I paid more and had them rebuilt.

Posted by: johnhora Mar 14 2019, 09:11 AM

questions to ask...
what condition are they in...
do they need a rebuild...
are all parts there...etc

Posted by: flmont Mar 14 2019, 09:22 AM

I dont know yet but I will ask them,..If they need rebuilt whwere is the ( Place ) to send them. Thanks Frank

Posted by: flmont Mar 14 2019, 09:23 AM

Wes, Whats the largest displacement can you go with those carbs. ?? TIA,..Frank

Posted by: GregAmy Mar 14 2019, 10:13 AM

DHLA or DRLA? DHLA are side drafts...

If we're talking Rs, then the biggest venturi for the 40 DRLA is 34mm.

However, CB Performance offers a kit to convert the DRLA to 36mm venturis and changing the design of the discharge tubes:

https://www.cbperformance.com/product-p/7345.htm

Posted by: yeahmag Mar 14 2019, 11:05 AM

You can get 36mm venturi's from folks other than CB.

http://vwparts.aircooled.net/Dellorto-DRLA-Venturi-36mm-fits-36-40-and-45mm-p/dellorto-drla-venturi-36.htm

I did have to trim about 1mm off of them for my carbs. Apparently there are quality control issues...

Posted by: GregAmy Mar 14 2019, 11:13 AM

That's good to know.

I converted the 40s on my racer to the CB Performance kit and they may also have some quality issues. Primarily I don't think the discharge tube is properly seating. Contacted their technical support and they never got back to me so I stopped trying.

I ran it like that last Fall a couple of times and it seems to work fine, AFRs come in OK after re-jetting, but I'm getting some inconsistencies in smoothness and light backfiring on throttle off. Gonna have Chris Foley go through them and see what he thinks.

Posted by: flmont Mar 14 2019, 11:21 AM

Thanks GregAmy,.. DRLA the pic shows ,this is also a build for general street use also,.??

Posted by: yeahmag Mar 14 2019, 11:26 AM

The 40 DRLA will suit you just fine. Make sure you grab the CB Performance book on them and double check that the jets and floats are in the ballpark. I have TONS of parts for them, so let me know if you need anything.

Posted by: SirAndy Mar 14 2019, 11:43 AM

36 seems too big for a 2.0L engine.

I went down to 32 venturis on my 2056 to get rid of a annoying off idle flat spot.

Posted by: yeahmag Mar 14 2019, 12:28 PM

Mine is a unique case. I run the car above 7K RPM for autocross. I don't have any flat spots, but everything is tweaked to the 9's.

Posted by: GregAmy Mar 14 2019, 02:02 PM

Mine too. Race only, cams/compression "warm" build by Foley.

The "Dellorto Bible" is a (poorly-edited) book, filled with excellent info about these carbs. I recall it recommends 34s, along with some baseline jetting/air correction info. Get a copy of it.

https://www.cbperformance.com/product-p/0101.htm

Street car is all D-Jet, all the time...

Posted by: rhodyguy Mar 14 2019, 04:31 PM

I found the Del book from CB lacking. Severely. Nothing at all like the Weber book.

Posted by: rhodyguy Mar 14 2019, 04:48 PM

If you want to farm the carb work out, try Blackline Racing in Murray Utah.

Posted by: flmont Mar 14 2019, 05:14 PM

Thanks Guys,..which Carbs are the better ones,...weber or dellor
tos

Posted by: GregAmy Mar 14 2019, 07:07 PM

Oh no you did-int!!

Posted by: 1adam12 Mar 14 2019, 07:16 PM

Visit Eurocarb for your genuine Dellorto parts. Someoneo on the forum here suggested it and I've made a few purchases through them to rebuild my DRLA 40's. There in England but ship fast and cheap to the U.S. !!!!!

Posted by: yeahmag Mar 15 2019, 11:22 AM

I personally find Dellorto's superior in their design, ability to be tuned, and driveability.

Posted by: MarkV Mar 15 2019, 01:28 PM

I bought all of my rebuild parts and vents from this guy:

https://www.ebay.com/str/ALFA1750S-CARBURETORS-PARTS-STORE?_trksid=p2047675.l2563

He is in Italy but he ships pretty fast. He recommended 34mm vents for my 2056 which is what I am running. My carbs came with 28's and the 34's made a huge difference.

Posted by: porschetub Mar 16 2019, 01:35 PM

,cheaper than Eurocarb and huge selection,shipping is always cheap and quick even to my country,I've places about 6 orders now never had an issue.

Posted by: flmont Mar 16 2019, 10:36 PM

LOL...Sorry GregAmy I just dont know carbs..but I do like these he wants 300.00 for the pair..