Author Topic: side draft carburetors? (Read 16874 times)

yoda87 · « **on:** Jan 15, 2010, 07:24:30 PM »

just wondering what makes side draft carburetors better? that and if someone could help explain more or less how they work it'd be much appreciated

dezrik · « **Reply #1 on:** Jan 15, 2010, 08:27:00 PM »

better flow, air comes in straight right through the intake ports....

Regular carbs have to come down like
air cleaner
||
||
||
_______[ head ]

Side draft goes

>====[ head ]

Picture of a Downdraft

BHT12 · « **Reply #2 on:** Jan 15, 2010, 10:13:31 PM »

Whats the difference in your gas mileage?

yoda87 · « **Reply #3 on:** Jan 16, 2010, 08:59:43 AM »

ok so basically its like an efi version of a carburetor, without all the computer crap. would it help with hills?

unclejpl4x4 · « **Reply #4 on:** Jan 16, 2010, 03:28:45 PM »

I remember seeing LCenginering sell sidedrafts a few yrs 10+ i don't know if they still do

yoda87 · « **Reply #5 on:** Jan 16, 2010, 05:21:07 PM »

if you go to lceperformance.com which i think is the same thing (couldn't access the lcengineering catalog on their regular site for some reason) they still sell them

BHT12 · « **Reply #6 on:** Jan 17, 2010, 03:54:13 PM »

Sooo Does anyone know what kinda gas mileage side drafts get compared to a weber or stock carb?

yoda87 · « **Reply #7 on:** Jan 18, 2010, 01:04:00 AM »

Quote from: BHT-ToyotaDude112 on Jan 17, 2010, 03:54:13 PM

Sooo Does anyone know what kinda gas mileage side drafts get compared to a weber or stock carb?

that and also does it do better on hills

zippo · « **Reply #8 on:** Jan 18, 2010, 03:17:31 AM »

Ive played with Weber side drafts on an 75 Cosworth I4. They work GREAT "for motorcross". They have huge amounts of tune ability. This can be a down side though. Getting each carb/intake to be equal and run correct is an art. Everything on them is changeable so what todo and how to tune can be a large learning curve.

Your performance comes from the fact each cylinder now has its own 45mm Intake, no bends, just straight in the cylinder. I do remember due to the short intake runner, the fuel atomization was somewhat poor. We went up a heat range on the thermostat to help with this.

If I had a 22r I would totally use them, if for nothing else the look awesome!!! And should give you much better performance.

As for fuel. If you keep your foot out of it, and tuned correctly i would think it would be about the same.

As for hill, I have no idea.

Nihal · « **Reply #9 on:** Jan 18, 2010, 04:20:47 AM »

Hi, Taking about sidedraught carburators the SU carburator comes to mind, its a very popular carb in British engines and was also used in racing with success:thumbs: Was standard fitting in all the Austin/Morris Mini's.

Here is a link that tells you all about the sidedraught and also its operating principal
http://en.wikipedia.org/wiki/SU_carburetor

Hope this helps

Nihal

emsvitil · « **Reply #10 on:** Jan 18, 2010, 04:24:52 AM »

keihin cv40 carbs are easy to find because harley owners take them off for mikunis..

zippo · « **Reply #11 on:** Jan 18, 2010, 01:34:05 PM »

Quote from: Nihal on Jan 18, 2010, 04:20:47 AM

Hi, Taking about sidedraught carburators the SU carburator comes to mind, its a very popular carb in British engines and was also used in racing with success:thumbs: Was standard fitting in all the Austin/Morris Mini's.

Here is a link that tells you all about the sidedraught and also its operating principal
http://en.wikipedia.org/wiki/SU_carburetor

Hope this helps

Nihal

No offense i wouldn't touch those things. They make the weber sidedraft kit for ALOT of vehicles, its tried and true and the intakes are cheap and nicely made. Parts for the carbs are also much easier to find as would tech help.

yoda87 · « **Reply #12 on:** Jan 18, 2010, 04:22:09 PM »

thanks for the feed back guys, looks like ill be buyin one of those baby's when i get the money $Beer Chug\'n$

zippo · « **Reply #13 on:** Jan 18, 2010, 04:42:38 PM »

Post pics!

86toyota · « **Reply #14 on:** Jan 18, 2010, 04:49:04 PM »

Hey Hunter, here are you prices...you better start saving before we head out of Montana this summer to go hit up sand lake

http://www.lceperformance.com/20R-22R-Weber-45mm-Sidedraft-Carburetor-p/1031012.htm
http://www.lceperformance.com/22R-Sidedraft-Manifold-w-Linkage-40mm-45mm-Carbs-p/1032063.htm

BHT12 · « **Reply #15 on:** Jan 18, 2010, 05:09:56 PM »

Uhh yeah the kit is over 1,500!!

zippo · « **Reply #16 on:** Jan 19, 2010, 01:23:45 PM »

You can find the weber cheaper elsewhere. LC is a little $$

79coyotefrg · « **Reply #17 on:** Jan 19, 2010, 07:23:55 PM »

not sure how side drafts would work offroad but i recently acquired a set of Italian weber's and manifold

89sastoyo · « **Reply #18 on:** Jan 20, 2010, 01:30:12 AM »

I have been told they blow offroad and are meant for racing more so. I know you can tune them up a bunch like stated above but there more of a race and high rpm power gain than an offroad part. also I don't know if you can get legit air filters for them so seems kinda sketchy. For the money i would just get another stock carb and rock that if you get a good one they do work offroad. Toyotanners works awesome never really cuts out or anything just hard to start on steep inclines. Or I would do an efi swap IMO

zippo · « **Reply #19 on:** Jan 20, 2010, 01:44:28 AM »

K&N makes a nice filter.

yoda87 · « **Reply #20 on:** Jan 20, 2010, 06:43:58 PM »

yeah for that price and the possibility of a side draft sucking balls off road, i may just want to get my weber running better haha

79coyotefrg · « **Reply #21 on:** Jan 20, 2010, 07:53:28 PM »

Quote from: yoda87 on Jan 20, 2010, 06:43:58 PM

yeah for that price and the possibility of a side draft sucking balls off road, i may just want to get my weber running better haha

thats a good idea

yoda87 · « **Reply #22 on:** Jan 21, 2010, 09:05:05 PM »

maybe a supercharger would be a better idea lol

zippo · « **Reply #23 on:** Jan 22, 2010, 01:38:30 PM »

Camden Supercharger makes a nice one. I live near them. They are nice! but around 2k for the kit...

yoda87 · « **Reply #24 on:** Jan 22, 2010, 03:37:53 PM »

either way its gonna cost some green

chicorider · « **Reply #25 on:** Jan 24, 2010, 01:29:09 AM »

that was quite informative guys. i have an 84 and it's good to have carburation options.

chicorider · « **Reply #26 on:** Jan 24, 2010, 01:33:47 AM »

or is that spelled carbureation? no, i think i was right watev. anyways i guess the! weber won? nevertheless this in my 11th post. booyah!

zippo · « **Reply #27 on:** Jan 24, 2010, 02:02:53 AM »

I gave you a turtle point. enjoy!

yoda87 · « **Reply #28 on:** Jan 25, 2010, 06:56:00 AM »

don't know about the other carburetors out there but the weber that i have works awesome, especially with a k&n filter

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