Carburetor

[braceface]

Hi All - Carburetor finally died in my 72 '02.  Thinking to replace with Weber 32/26, but wondering opinions.  I want the power, but I don't want suffer low gas mileage.  Is this a happy medium?

 

Thanks!

[TobyB]

Yes, quite happy..

 

t

 

[venoak]

Yes, I like my Weber 32/36 on my 74.  I get about 17-22 mpg.  About 9 mpg on the track.  On the freeway and streets here in SoCal it is just fine.

 

As an aside, I will say that I've been thinking a lot about changing to a Weber 38/38 for more power on track days.  But its a slippery slope for me from there.  Next I'll want a bigger cam (292), and vented disc brakes of course to go with the additional HP.

Here is a chart to guide you towards 170+HP and away from MPG. 

[Mike Self]

Yeah, the Weber 32/36 is pretty much the universal choice for replacing the problematic Solex two barrel.  Lotsa discussions on the FAQ WRT jetting, tuning etc.  I've had one on my '73 since 1981or so (when my Solex died!) with few problems--and I get 22-25 mpg around town and flirt with 30 on the highway with a 5 speed--that's with a 284 cam and 9.5 pistons.

 

mike

[TobyB]

Quote

 a Weber 38/38 for more power on track days.  

 

I have run both on the same car- there's not really any difference in lap times 

until you get quite a ways down the rabbit hole with performance modifications.

 

The 32/36 flows a lot,

and the 38/38 flows a bit more, but what you really notice is that the

38/38 is not progressive, so you have about 3/4 rated power at 1/4th throttle,

whereas the 32/36 doesn't even start the secondary until about halfway open.

So the 38 FEELS like a lotta power, but only because it all happens at the beginning.

 

t

 

[Hodgepodge]

I have a 32/36 in my 4-speed '75.  It is perhaps the only thing that I haven't needed to fiddle with on the car, but I am replacing the stock manifold with a cannon, so I may end up fiddling with it after all. (I'm not doing that for more power, just because I think it looks much cleaner and there are fewer holes to plug.)  I get decent mileage and pretty good power.  It's easy to service and nowhere near as complex as, say, dual DCOE Webers (I have an Alfa with them).  I've owned other 2002's including a tii.  Honestly, for everyday driving and occasional track days, a 32/36 is probably fine.  On the highway, I don't think I could tell the difference between a 32/36, 38/38, dual DCOE or even a tii with a 4-speed.  Like others have said, it is a slippery slope to get more out of your engine. 

 

Hope that helps.  

[venoak]

Interesting.

At the track I’ve been looking for a little more power out of the corners and onto the straights. (Maybe less entry braking is required).  

 

On the street there is really no need for anymore. I’m at least as fast as most cars on and off the freeway. Passing not so much.

 

I’ve been told that the times I’ve been running with my 32/36 at the track would put me at the back of the VARA pack of DD 38 ‘02’s. Not bad for a non race prepared 02. 

 

My setup is pretty straight forward:

1st factory overbore and pistons

stock cam

3.64 Diff (not LSD)

4 speed

Stage One Suspension

14” wheels w/falken tires

shorty exhaust header (IE?)

 

Just to be clear and stay on topic,  I am happy with how my car drives with the 32/36.

 

I’m really only thinking about marginal low cost improvements at the track.  I bet my times would improve if I relaxed a little more and didn’t fight the car quite so much. Momentum. 

[rstclark]

Plus 1 on what Toby just said

If you have a stock motor, you should be happy with the 32/36 out of the box

From my experience, I have a 32/36 on a motor with a 284 cam and it needed some re-jetting.

With a 5 Speed it gets 27 + mpg on the highway

My other car with a 292 cam and a 38/38 is very happy and more fun to drive. It also cold starts and runs with little or no choke which I like.

Again with a 5 speed there doesn't seem to be a significant loss of MPG.

[AustrianVespaGuy]

13 hours ago, TobyB said:

The 32/36 flows a lot,

and the 38/38 flows a bit more, but what you really notice is that the

38/38 is not progressive, so you have about 3/4 rated power at 1/4th throttle,

whereas the 32/36 doesn't even start the secondary until about halfway open.

So the 38 FEELS like a lotta power, but only because it all happens at the beginning.

+1 to what Toby and Clark said. For a stock motor and around town driveability stick with the 32/36.  38/38 is only beneficial once you have a bit more aggressive camshaft and are up high in the revs, but it's true that it feels much different as it gives much more throttle for much less pedal input.

[braceface]

4 hours ago, AustrianVespaGuy said:

+1 to what Toby and Clark said. For a stock motor and around town driveability stick with the 32/36.  38/38 is only beneficial once you have a bit more aggressive camshaft and are up high in the revs, but it's true that it feels much different as it gives much more throttle for much less pedal input.

Yeah this is my around town daily driver, stock motor so I'll go with the Weber 32/36.  Thanks everyone!  

[Dudeland]

If you get one, make sure that you get WOT.  I just had to adjust the bracket connecting the gas pedal to the arm to make sure I would get full motion.  The PO wasn't that "detail focused" what I mean by that is it was slapped together. 

 

Thankfully that was the last little bit that needed to get sorted out... for now.  

 

Regards