VW Performance Bench Tuning DRLA & IDF Carburetors

Actual Carburetor Tuning Talk starts about 4:20
A little morning chat then off for a short Putt in the 2 liter VW street Baja.
Last week we improved the performance in the fresh 2110 conversion engine. Here are some behind the scenes work I did.
One of the changes I made to improve things was swap out the Dual 36 Dellorto DRLA carbs for larger Dual 40 Carbs. The idea was to see if the engine liked the larger venturi's (34mm vs 30mm) even though it has a mild Camshaft. I had used these carbs before but they have been in storage with no fuel in them for over a year. I wanted to check them out before I put them on the engine and make sure everything was working and set up right. I turned the camera on and chatted away as I worked on the first one. The Weber IDF carburetors are very similar in operation and I make references back and forth about the Weber IDF carb. Inspecting throttle linkage operation is critical to make any dual carb system work well.
This vid is not intended to be a complete rebuild or to in depth. I'm just making casual conversation as I check it out before final installation.
If you have questions about what you see in this video ask in the comment section and I will try to help.
If you find this video entertaining or helpful Please LIKE & SUBSCRIBE!
Thanks and create a great Day!

[@bigwadventures7061]

Such a great video on the Carb repairs and updates. So nice to see you again and I wish I was there in your garage and Baja with You. Thanks for sharing and take care and enjoy yourself. BigW:-)

[@Adamsbuggiesandbugs]

Another great video! Good to see you back in action! Alot of great knowledge in these videos and I appreciate you sharing! Thanks for taking the time to make these!

[@johnfreeman1189]

"Here Here"!!!

[@gilbertovillafana]

Appreciate your videos a lot, Thank u! very much Sir

[@RustyGlovebox]

Those carbs are so versatile . If you know how to jet and adjust them they will work on almost anything

[@dirtyscant3447]

Thank you for sharing your knowledge.

[@mcdanielsmotorwerks423]

Thank you for producing another informative video. I'm constantly referring people to your channel for carb advice. We can't preach enough proper carburetor set up bench clean and best lean idle set up. After 30 years I finally feel like I have a good handle on carburetor set up. Although I'm still amazed with all the information at hand with the internet that people still think they can grab a carb out of the box from the VW shop and bolt it on and expect it to run on their engine with no effort. People like to say you can put a Porsche engine in that bug! I look at them and laugh and say your right, and reply, did you also now you can bolt a set of Ferrari carburetors "48 IDA" on them and make it really fast! Keep up the videos you reaffirm that i'm on the right path when I have doubts.

[@TheEZGZ]

Thanks for the kind words and referrals.

[@kevinhamling1963]

G'day, Kevin here from Australia. Dual carburettors you gotta lov'em to hate them. Your carburettor videos have always been my go to for solving problems with my dual Webber's. Keep the videos coming man your amazing. Stay safe and healthy man. ✌ Peace

[@TheEZGZ]

Thanks my friend. I think those idle jet stacks for Webers are called (JET DOCTORS)

[@suzukiman650]

You know you are getting 'old' when you spend Friday night watching an EZGZ video lol. 😁

[@TheEZGZ]

Love that! If nothing else, It will put you to sleep. hehehe

[@vintage76vipergreenBeetle]

@@TheEZGZ Your videos are better than what on tv nowadays.

[@JWClassicVW]

Always love the GOLD nuggets!! Thanks EZ and GZ... lol

[@michaelwilliams529]

Hey Greg, thanks for another great video. It will be interesting to see how the Dell 40s go in place of the 36s. I wonder if the hill climb will suffer. Do you have heat in the Baja?? I certainly would if I lived there. I have heat in the Bug and we have a very mild climate here in Perth. Cheers Mick

[@TheEZGZ]

I posted the results of the second Heartbreak hill attack with the 40's It did help noticeably. The Baja has a (78X90.5 ) 2 liter with mild cam stock heads and heater boxes. It is my favorite engine build. I had the 2110 with 82mm crank and tried to duplicate what I did on the 2 liter. With a little more tuning and some warm weather I think I might have it.

[@michaelwilliams529]

@@TheEZGZ Hi Greg, where did you post the Dell 40 run?? From my side I cannot see anything new. Am not hassling you....am just curious to see it. :-) Cheers Mick

[@TheEZGZ]

kzbin.info/www/bejne/b3S0Z6mMp6hmbsk 1st time up was36's second trip up was 40's

[@michaelwilliams529]

@@TheEZGZ Ah sorry Greg. I had seen that one just didn't realise the second run was with the Dell 40s fitted. Certainly seems to pull better. I was thinking the 40s might be worse than the 36s at 2k rpm with less air velocity through the throats. Seems I was wrong. I usually am. :-)

[@VWJawbreaker]

Another great video. I love hearing you talk, I always grab little nuggets of info! Hope you’re having a great weekend.

[@TheEZGZ]

Thank you! You too!

[@mattstick1man563]

Love the video !! Where are you in Colorado, we live in Woodland Park, about 17 miles west of Colorado Springs.

[@TheEZGZ]

I'm in Loveland. Maybe we can meet up at the Bug IN at Bandimere speedway if they have it this year

[@mattstick1man563]

@@TheEZGZ That sounds great !! In the meantime I'm looking for another Baja, if you know anyone who might have one for sale I'd be interested in checking it out. I had a 70 baja when I lived in Phoenix and we loved it, but since we moved to Colorado I haven't been able to find a decent one.

[@TheEZGZ]

You will have to fight me for it!! hehehehe I got mine from Pueblo Colorado...

[@Paulman50]

Did float level and jets this afternoon, seem to run the best I've ever had. Many thanks to your knowledge from earlier vidios(34pic3)

[@TheEZGZ]

Nice work! :-)

[@dradcock0255]

Hey EZ, thanks for all the fantastic information you supply us with. Can you tell me what would be a good setup/starting point for jetting dual Dellorto drla 36's on a 1915 VW dune buggy? Engine stumbles at acceleration then smooths out pretty well.

[@TheEZGZ]

The stock jetting works great on those carbs. I have them on my 2276 right now. The stumble could be not enough stroke on the accelerator pump squirt, or not being perfectly synchronized linkage.

[@rheidtech]

Thank you gz🌯🌯🌯

[@TheEZGZ]

Always welcome

[@tonypachanga9636]

Hi could you send me again the answer for to pulley one was 356 pulley alternator and in the bottom small pulley I think it's call power pulley & where I could purchase the 356 porch .

[@TheEZGZ]

www.pelicanparts.com/search/?q=generator%20pulley carcraftstore.com/sandsealpowerpulleykit.aspx

[@rustysanchezgarage]

Great video thanks for sharing. Do you know where I can buy the book from? I have been looking everywhere online and all I find is out of stock.

[@TheEZGZ]

That's a bummer dude

[@andreaverza5625]

hello, great video, advise you what for my 1641cc as a double carburettor

[@TheEZGZ]

Dual 40 Solex Kadron's or if you want to go cheap Dual Dual 34 ICT Weber's

[@seeyou1812]

Thanks for the tips, I have 100s of hours trying to get carbs right.

[@TheEZGZ]

Me Too !!!!! I feel your pain. LOL Even when you think you have it perfect. The next time you want to go for a ride with clean cloths ...... some mysteriously changes. I'm going to see a astrologist....

[@home-powersystems7782]

Thanks GZ another great video. Tell everyone where heartbreak hill is.

[@TheEZGZ]

Why? To much traffic as it is. The cops will set a speed trap. LOL

[@edmondcotter1014]

thanks so much for all your great videos,i watch them all, over & over 😍 way better than tv 👍 i have a set of DRLA 40s on my 2017cc beetle, can i ask you what the ideal setting is on the accellerator pump rod ? how far in should the nut be turned ? or how many mm of thread should be exposed in front of the adjuster nut ? for best squirt ? thanks in advance man 😍

[@TheEZGZ]

Great question! There are many variables but the crux of it is that the DRLA 40's originally came with #35 pump jets. Make sure you have a smooth steady stream coming out of all 4 squirtter's Turning the nut out (away from the carb) reduces the flow ( leaner) Turning the nut in clockwise makes more fuel go in. I use a 1/4 nut driver and go one full turn at a time. I try to adjust both carbs at the same time since I have a 4 into 1 exhaust. With the engine at steady idle Blip the throttle. If black smoke (fuel) comes out the exhaust your to rich back out the screw one turn and test it again. If you engine stumbles or pops back threw the carb it usually means a lean condition. Most important is to have both carbs in synch using a air flow meter. I just looked at one of my carbs and I have about 6 threads showing behind the nut. I'll also tell you this, if you go to fat you will notice a reduction in MPG. The threads on the control rod act like a file on the accelerator pump lever and the holes get out of shape so check yours and hope they are good. The diaphragms get old and hard from modern ethanol fuel too. The diaphragm chamber is the trash can on all Dellorto carbs because it takes fuel from the bottom of the float bowl. You find dirt and rust and peaces of the diaphragm laying in there. No big deal. just wipe it out and spray some brake clean threw all the nooks and cranny's. Watch it at the squitter . The book describes a method adjust the control rod. They call out having 6 cc from every 2 squirts from the bottom of each bore...... (Good Luck with that) my way has worked well enough for years

[@edmondcotter1014]

@@TheEZGZ thank you so much for the great info 👍i have both carbs cleaned out with carb cleaner sevral times & i have balanced them as well as all new gaskets,seals needle valves and new diaghphrams, thanks again ezgz & keep the vids coming i have learned loads of stuff from waching all your vids

[@ericsander9392]

Hey Greg could you post a picture of the accelerator pump rods in the comments? I think I finally figured out my bucking problem my rods are bent at different angles. I’m not sure which one has the correct bend.

[@TheEZGZ]

I can't post pics in comments. I am working on a New Weber IDF video. I will try and remember to do a close up of the rod for you. Might be a couple weeks.

[@ericsander9392]

Okay I have dellorto 48s I’m not sure if the Weber is the same or not.

[@ericsander9392]

It’s acting like the accelerator pumps are loosing prime

[@mawhoyia]

Are you still around. I would love to have me a nice weber for my bug. Could you help me out with one. Or guide me to find one?

[@TheEZGZ]

No, sorry. I only provide free information.

[@Dangerous.D]

@@TheEZGZ and were very happy that you do

[@ericsander9392]

Great video!! I’ve got a 2332 vw with a CB performance turbo with dual DRLA 48s on and I seem to be having problems every time I hit a pretty good bump on the sand dunes it starts snapping and popping not at wide open throttle though. I’ve adjusted the floats and cleaned the carbs numerous times the thing that gets me is it runs perfect on the highway. Do you have any suggestions?

[@TheEZGZ]

Are you running a Turbo fuel pressure regulator? www.cbperformance.com/product-p/7246.htm Many people think that a 2332 turbo has to have those big honking 48's which run great at WOT but the problem we had was most of your dune cruising is not wide open throttle. Your driving in the middle. Not on the idle circuit and not fully into the mains. The 48 Dells had a travel stop on the float to keep it from bouncing to much. Lot's of Turbo guys cut that off so as not to go lean. If you drive like my friends and do on the sand your only on WOT for short bursts. You might want to go down to 34mm venturi's and a little smaller mains. Non turbo would be around 140 main. I'm not sure on Turbo. We only ran around 8 or 9 PSI boost. Anyway, smaller venturi's limit your RPM but give you more drivability. I wouldn't want you to take only my advice and hurt your engine. I would rater give up top HP for more torque and drivability down low. The Turbo mania book gives some good advice and suggestions. Thats about all I got to say except keep the rubber side down my friend and may the sand never get in your eyes. hehehe fat chance for that ......!

[@ericsander9392]

Thanks for the reply man! It has 160 main jets and 75 idle jets with a 40 venturis . What gets me it’s it will pull from 2500 rpm to 8000 rpm really well on smooth ground but those bumps make it sound like it’s running on one carb and I’m running 10 psi of boost It kinda acts like it is float related to me.

[@ericsander9392]

And I’m also running that fuel pressure regulator I have not checked the fuel pressure though.

[@TheEZGZ]

It sounds like your on the right track. I would install a good fuel pressure gauge and like it said in the add 5 psi above boost and it needs to be under 3 PSI when not on boost or those inlet valves won't hold.

[@harryloibl5183]

For the 1600 bug I forgot to mention thanks

[@TheEZGZ]

Your welcome :-)

[@vintage76vipergreenBeetle]

Great info. 👍

[@TheEZGZ]

Glad you think so!

[@harryloibl5183]

Hay ez I want to get twin duel carbies I was thinking of the cb Webber what do you think thanks buddy

[@TheEZGZ]

That's a lot of money to pay for those IDF carbs and I can't believe they don't come with velocity stacks....! I'm still running my old Dellorto's that I bought back in the day. One of the problems I have is that the new webers no longer come as a Right and Left carb like they used to. They modify the throttle linkage to make it work but the return spring will be on the wrong side and they are harder to synchronize for full travel. Keep asking around to find someone who is actually running them and ask them how they like them. CB has a no return policy on racing parts. Be sure and ask about that before you buy. I got screwed when I built my 2110 engine.

[@harryloibl5183]

@@TheEZGZ thank you heaps I may be able to purchase some dellortos but not cheap $1400 carbs only ,rebuild .

[@TheEZGZ]

Naaaah you don't want to do that. Many of the Dellorto's have a drip problem because so plug eats away. Check out those Super D carbs at Cart Craft. Call them up. Ask them for some advice and if they will stand behind the product. carcraftstore.com/newduald-seriescarbs.aspx

[@rickhuntindustriesmcdragra4860]

@@harryloibl5183 I've got a selection of drla carbs from 36 to 48 tri jets, the 48s are nos and pricy, but I can can get you a set of the smaller one's rebuilt for under $1000, whe finished they would look real nice, let me know if I can answer any questions for you, can't beat original Dells, I also can fix the drip on them.. I do have an add on the samba with my work. Rick (mcdragracer)

[@MrWillis5719]

Hi EZGZ

[@TheEZGZ]

Well, Well Good to see your still sucking air Steve. It's been a while. I took some time off too. Thanks for checking in. God Bless you and keep you healthy.