Weber carb vs. jetting stock carb

Posts: 200

I have been reading alot on this forum lately and I was planning on opening up the intake and exhaust on my 800cc. from what I have gathered if I do that I must re jet the carbs correct? Ive also read some threads on pple rejetting the stock carb and getting some power... so my question is which is better, rejetting the stock carb or just buy a weber carb? and If I do get a weber, does the jets on that have to be adjusted? I would prefer some advice from those with experience with one or the other, or both... thanks in advance

Posts: 341

Never found a reason to junk the stock carb, they run good with a little work .042 primary and .089 secondary. After you drill the jets the best mod is manual secondary's and dump the non working vacuum pot. Get yourself a good header.
Later W.C.

Posts: 200

great info thanks.
but it doesnt really answer my main question, is a Weber better performing than a modified (rejetted) stock carb?

And there is more details I would like to know....Is the Weber actually any larger ports? does the weber need to be re-jetted too? Besides adapter plate and cable resize what other mods are needed (if any) for Weber setup?

Posts: 341

I personally havent seen a big gain from aftermarket carbs on these 800 engines.
If you are going to shave ,port and polish the head,change cam,header,ignition mod's and so on, I could start to see a benifit from a bigger or better carb.
If you are just going to do a header and intake mod I see no gain over the stock carb . You can stuff only so much air and fuel thru a head that has a stock .300in. lift cam.
It all depends on what model of Webber carb you are looking at to know how big the ports are and what jetting.
The "pot" is a vacume chamber that actuates the second "large" butterfy in the carburator when you are at full throttle, they dont work very well in this application. You will need to make or buy the manuel linkage after removing the pot.
Questions are always welcome ,thats what this forum is for.
I do sell hi perf parts if you need prices you can e-mail me at
spike2@peak.org.
Later W.C.

Posts: 200

Now thats was exactly the type of info I needed thank you Smile

You seem to be the guy to talk to ..... I am interested in what you offer for performance parts. I will contact you privately....

Posts: 1273

I have not seen any performance cams for sale. We had Crower cam's on here for a while and they were guaging interest, have not heard from them in a while.

Mike at 3 tech will do a regrind for you.

Good luck

Chris

Posts: 200

thanks for the reply, good info.

phone number or email for Mike @ 3 tech?
Any idea on the price? I thought I read about someone with a cam in here...

Still wondering about head porting too....

Posts: 1273

I do not know it off hand. If you do a search on this site for Mike Cove or 3 tech you will probably get a lot of valuable info. Mick aka Ma0990 had him do the regrind and port and polish the head.

He specializes in hopping up 3 cyl suzuki motors.

Chris

Posts: 200

yes, yes, great info, keep it coming. You guys are the best! It makes researching this stuff so easy...

Posts: 1273

Well, I was referring to mike cove at 3 tech...as in 3 cyl. suzuki motor.

However, Mick has become quite the specialist as well Laughing

He has done the cam regrind, weber carb, header and exhaust, wiring, fire wall, shocks, tires, and.....nitrous Twisted Evil

...and I am sure I have not remembered it all Wink

Chris

PS. He is also the one who found the suzuki engine manual that is posted on the site for the 800cc