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Posted by: 914fun Aug 28 2010, 03:48 AM

Will weber dcnf 42 be to big for a stock 1.8 lt? Im taking off the D-jet system. Ben fooling with it for almost 3 years now. Done spending time and money on that system. So its time to spend time and money on a carb system. I plan on using my dizy for now. Im thinking the 34 would be to small. From what I read the 40 work well but I found some 42 that are at a good price. What do you guys think?

Posted by: Bleyseng Aug 28 2010, 04:13 AM

Fix the Djet.

What the hell is the problem with the Djet? Lots of experts to help you with it and why have you struggled with it for 3 years?

Posted by: zig-n-zag Aug 28 2010, 04:40 AM

Do you have manifolds? I don't recall manifolds made for the 914-4
or type 4 in either dual or single carb application.

Posted by: Mark Henry Aug 28 2010, 07:55 AM

I'm this site's 42 DCNF guru and it's the Wrong carbs for a 914 for sure.

They are a street cruiser carb and even with mods they hate left hand turns. DCNF's are designed for Maserati and Ferarri engines and are meant to be installed 90* from how we install them on a type 1 (or 4)

On a street bug or my bus they work great because those cars do not see the lateral G's that you can pull on a teen, even just daily driving.

Real bad choice even if you can find the manifolds.

Posted by: 914fun Aug 28 2010, 09:45 PM

I seen those carbs on Thesamba. I guess I dont really know what I'm looking for when it comes to carbs. Whats wrong with the D-jet is to rev it by hand it sound ok but when I drive it it misses really bad. I look at the plugs and they are black with carbon. Running rich. I think I have done everything everyone has suggested. I just want to drive the thing. Seems like over the 3 years I've had it I get it running somewhat for a day or two and then I cant drive it for months because something crazy with the fuel delivery happens. Every time I mess with one thing two more things go wrong. I had carbs on my first 914 20 years ago and at least if it had a problem mechanics could figure it out without replacing everything twice to see if that will fix it. I dont have people in this aria that know anything about this system. So even though I would like for the D-jet to work I feel its best to go with carbs so I can have a better chance at keeping it usable. Thanks guys.

Posted by: sean_v8_914 Aug 29 2010, 10:45 AM

Gene burg loved these DCNFs...but he wqs a drag racer. I put some on a 1776 type 3 fro a guy. it was a street cruiser as mentioned above. it pulled strong on the freeway
check out my home brewed shorty intakes. they were fugly

I cant find the car...it was cool, slammed with boxter 17s


Attached image(s)

Posted by: sean_v8_914 Aug 29 2010, 10:47 AM

...so you mean that the barels go left-right instead of front to back as on a type 1 and 4?

Posted by: Mark Henry Aug 29 2010, 11:23 AM

Yes.
I talked to the man himself extensively on the DCNF's when I bought my complete 2007cc T1 kit from him almost 20 years ago. Seems that there was 30-40 different DCNF models over the years and all but a few were made with passages way too big for the type one. I had another set (not Berg) on my T3 and they always cut out bad on a hard left, right turns didn't seem to affect them as much.

For a Type 1 cruiser they are the ultimate carbs. Gene didn't even recommend them for drag racing. He preferred the IDA on race engines.

BTW I put my O2 meter on my Berg DCNF carbed engine, perfect 13:1 AR throughout the entire operating range. You can see these carbs on my Pinesol Carb cleaner thread.

Also a local guy Dave Shire (sp?) had them on his 914, he did every mod he could find including the Grosse ball jets. I don't think he ever got it to run right.