I am contemplating purchasing a set of used Weber 38/40mm carbs, new filters and gaskets installed. They appear to be in excellent condition, however being new to the mechanics of Z's, I would like some advice as to if these are a good match on a 74260 with a stock L26 in it? I know i will need to purchase a new manifold, anything else? Thanks!

 

ZLishous,

I would really recommend that you go with SU's. Not the SMOG square SU's that were originally stock on the 73,74 Z. Try checking out www.Ztherapy.com and giving them a call for SU's. If you can afford their price of getting them redone. They really sell a nice set of carbs.

If not try finding a used set of early SU's in the classifieds on Zdriver.com, or Zcar.com, maybe even Ebay.com. From there you can purchase a rebuild and tune video from Ztherapy, and I think get a rebuild kit for around 100. Webers are harder to tune, and probably would be a waste on a stock engine. So in my opinion SU's would be the best choice for you.

zya
Yuichi
ZDriver.com
StrictlyZ.com

 

Thanks y, I already have a pair of 72 240 su's on her, so you think i would not gain alot horsepower with the Webers (which is what I am looking for)? My car is pretty quick with the su's, but I am looking for an easy "pick me up". Your thoughts??

 

I have though about this before, and asked the same question, but the gist of the response is this:- All webers do is supply more fuel, on a stock engine you don't need more fuel, the SU's can supply it fine, so there is no point in upgrading to webers- That's what i got from it anyway

Alan, Australia

 

So, an opposing view may be if I were not to keep the engine stock then then getting Webers may be a good thing, or when is it a good thing?

 

i guesss when the SU's cannot supply enough fuel... maybe after porting, increasing to L28, cam etc, i'm not sure though... I have a L28 ported and polished with 240z carbs, it gets enough fuel

Alan, Australia

 

look at norms car, he runs 12 secs with dual Su's, so they must not be doing that bad

Alan, Australia

 

Thanks for all the advice I think I will stick with the su's!!!

 

Fact is that most of the 'high' powered NA Zeds use triple Webbers/Mikunis/dellorto Carbies. For a standard engine It would be overkill, but on a decently modified engine I am sure it would make a big difference

"Aerodynamics are for people who can't build engines." -- Enzo Ferrari - 1967, Camar