air-cooled performance?

Question

i'm having an engine (1776cc) being built for my 66 bug. it's a daily driver. and i would like to try to get decent gas mileage plus a little performance. i'm trying to decide between dual weber 34 carbs. or a single weber progressive carb. you vw guys have come with some good advise, any suggestions? thanx

great minds think alike michael ox, i bought a freeway flyer last week

Answer 1

Hi i have just had a 1776 fitted in my split bus. I wanted all round power especially torque. I went for twin weber 34 icts. I also had various other mods done, but if you want maximum economy I would go for the twin carbs and a good exhaust to let it breathe well! my bus does about 30mpg!! if your not sure ring John @ JH AIRCOOLED ENGINES on 01902 324776 he is oldskool and knows the truth!

Answer 2

well the concept of high performance and a VW bug are somewhat mutually exclusive. Dual carbs will not gain you anything that anyone else is going to notice and you will get to see your gas vanish faster.

Stick with optomizing the performance of the car. Good cooling, maybe an oversized oil pump or external cooler, and better bells and whistles inside (consider doing a 12v system while the engine is out thats not a hard upgrade but you will be able to add so much more inside.).

Bottom line is a VW is never going to be a fast moving quick cornering thing unless you put in some serious money. Save it and make it comfortable and enjoyable.

either way.. enjoy it and good luck

.

Answer 3

Unless you are good with dual carb sychronization and the other pitfalls associated with duals you will like the simplicity of the Progressive Carb better and you can set the Secondaries to come in a little sooner on your linkage for that extra little boost....P.S. in the winter months in cooler weather you may experience icing on the intake below the carb... this will cause an awfull hesitation that can only be cured by feeding your bug preheated/warmer air thru the carb...plus be sure the two runners from the exhaust system are open and do not have gaskets blocking of the heat for the intake....(been there)...good luck

Answer 4

The weber progesive is going to be the easiest, to set up. A solex will mostlikely get the best gas mileage, and dual webers will get the best preformance. My suggestion for tuning is to run a edelbrock air fuel ratio gauge to see how the engine is running, either rich or lean. That is the only way to tell for sure that the fuel mixture is correct. Good luck.

Answer 5

Daily driver? Good gas mileage? Run the stock solex, good exhaust system , electronic ignition dist, and drive on! The valve job they show in "How To Hot Rod Your VW" works pretty well with the stock cam . Much more in modifications will reduce reliability and raise maintenance issues, The progressive Weber is nice but installs poorly and is not easy to adjust due to the way its mounted. If you want to race , get a race car.

Answer 6

I run a 1600DP with a engle 110 cam with dual Kadrons from AJ Simms at lowbugget.com and get 30+ mpg driving about 75-80 all the time.

Aj custom builds carbs for you, and you'll get a set of carbs that are pretty much bullet proof. I love them and couldn't imagine my bug with out them.

Plus they come set up and take little time to get running like a top.

Answer 7

I use to run a 1914cc with w-140 cam progressive webber rejetted. @ 70 to 80 m.p.h. on trips I would get 40 to 44 m.p.g.
Iceing up was horrible in cold weather,

Answer 8

i'm having a 'freeway flyer' built for my 71 super even as i type. gives me 4th gear from a bus (taller gear, less engine work, no more redlining to get to and maintain highway speed)

ask your local veedub guy if he can do the same for you. my guy says i will see a pretty good increase in mpg. i better. it's costing me enough!

Answer 9

performance and decent gas mileage DO NOT go hand and hand. To have one, you lose the other. Bigger intake valves and super beetle manifold/heads.