weber carburator swap

jjdeneen · 02-11-2003, 09:47 PM

does anyone know anything on switching from stock carbs to weber carbs?????

pros/cons.......

and i see on ebay there are different ones eg: 32/36 , 38/38

whats upwith the numbers.....

has anyone done this do you really get better gas milage, more horsepower

i have a 20 r engine i might do it to

all the info i can get would be helpful

thanks guys

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Skydigger · 02-11-2003, 10:07 PM

I've heard it is a great upgrade but don't have any details for you..

Good luck in your search.

Warren

jdfab · 02-11-2003, 10:33 PM

I actually have a Weber downdraft I think its the 32/36. It has a Datsun manifold with it but you could get a Toyota one. Its been sitting in the garage for years. I also have two 22R Mikuni manifolds...
http://www.jdfab.com/forsale/forsale.htm

butnut · 02-11-2003, 11:40 PM

I've ran the 32/36 in my Datsuns. Nice mild carb upgrade. Good throttle response even with stock cam. I had a Holley 500 (big mofo 2 bbl) in my '70 Celica. Had a huge cam, valves, gearing etc...needed a lot of jet tweaking to minimize bogging. Hard to beat side drafts though. Loved my dual Delortto's. Works best with a lot of head mods. Don't expect better mileage, ya tend to mash the gas more.

Headers and exhaust will be a good add on with the Weber. Good luck.

crash · 02-12-2003, 09:42 AM

32/36 32mm primary, 36mm secondary
The 38/38 is a sequential bore, both open at the same time
A 32/36 on a stock 22r is smaller than stock
The float bowl on a webber sucks, far worse than a stock, I have ran both carbs, the 38 with a C-series offy manifold and lots poop on the road, but sucked on the trail, needless to say I tossed all that stuff..

jdfab · 02-12-2003, 10:45 AM

he has a 20R which could have a smaller carb than the 22R stock. But I'm not sure on that one.

Memphis4X4 · 02-12-2003, 11:48 AM

Quote:

Originally posted by butnut
I've ran the 32/36 in my Datsuns. Nice mild carb upgrade. Good throttle response even with stock cam. I had a Holley 500 (big mofo 2 bbl) in my '70 Celica. Had a huge cam, valves, gearing etc...needed a lot of jet tweaking to minimize bogging. Hard to beat side drafts though. Loved my dual Delortto's. Works best with a lot of head mods. Don't expect better mileage, ya tend to mash the gas more. Headers and exhaust will be a good add on with the Weber. Good luck.

I run 6 Weber carbs on my 911 (one for each cylinder)....it gives better acceleration due to more power on demand. When you mash the pedal, you dump a ton of gas into the cylinders and you had better be holding on

. Butnut is right, don't expect better gas milage......the carbs sound so good when you get on it because they open up and you can hear them sucking in more fuel, air, small birds and animals that are in the vicinity. Also, when you let off quickly, there is a nice popping sound as the cylinders cycle and dump excess fuel and this ignites as it hits the hot exhaust and expands as it hits the air at the end of the pipes. I actually can get close to 30 mpg if I work at it.....but that is no fun......so I end up getting more like 8mpg because I keep my foot in it and thus grin more. Other drawbacks are starts on cold mornings and having to balance the idle with the choke until it's warmed up. There are many other horredous sounds that occur on cold morming starts......many snorts, pops, and bangs. But once it warms up, there's nothing like a motor running on carbs.

David

crash · 02-12-2003, 11:56 AM

Quote:

Originally posted by jdfab
he has a 20R which could have a smaller carb than the 22R stock. But I'm not sure on that one.

The 32/36 is a higher than stock cfm for a 20r

02-11-2003, 10:07 PM	#2 (permalink)
Skydigger Registered User Join Date: Jun 2002 Location: Victoria, BC Posts: 379	I've heard it is a great upgrade but don't have any details for you.. Good luck in your search. Warren __________________ 1986 4Runner. SAS w/ chevies, 44044s, Roncho shocks, 35" MT/Rs and a spray bomb paint job! The wife drives the '90 4Runner now.

02-11-2003, 11:40 PM	#4 (permalink)
butnut Registered User Join Date: May 2002 Location: The Aloha State Posts: 989	I've ran the 32/36 in my Datsuns. Nice mild carb upgrade. Good throttle response even with stock cam. I had a Holley 500 (big mofo 2 bbl) in my '70 Celica. Had a huge cam, valves, gearing etc...needed a lot of jet tweaking to minimize bogging. Hard to beat side drafts though. Loved my dual Delortto's. Works best with a lot of head mods. Don't expect better mileage, ya tend to mash the gas more. Headers and exhaust will be a good add on with the Weber. Good luck. __________________ Brian B like dat den... 2006 DuB CaB Tacoma Speedway Blue TRD Sport Last edited by butnut; 02-11-2003 at 11:55 PM.

02-12-2003, 09:42 AM	#5 (permalink)
crash Registered User Join Date: Jun 2002 Location: GOLDBAR BABY!!! Posts: 907	32/36 32mm primary, 36mm secondary The 38/38 is a sequential bore, both open at the same time A 32/36 on a stock 22r is smaller than stock The float bowl on a webber sucks, far worse than a stock, I have ran both carbs, the 38 with a C-series offy manifold and lots poop on the road, but sucked on the trail, needless to say I tossed all that stuff.. __________________ *STUFF for SALE*

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02-11-2003, 10:33 PM	#3 (permalink)
jdfab Registered User Join Date: Jan 2003 Location: Martinez, CA Posts: 35	I actually have a Weber downdraft I think its the 32/36. It has a Datsun manifold with it but you could get a Toyota one. Its been sitting in the garage for years. I also have two 22R Mikuni manifolds... http://www.jdfab.com/forsale/forsale.htm

02-12-2003, 10:45 AM	#6 (permalink)
jdfab Registered User Join Date: Jan 2003 Location: Martinez, CA Posts: 35	he has a 20R which could have a smaller carb than the 22R stock. But I'm not sure on that one.