Does anyone have an opinion on what the best carb would be to replace the 
original 28/36 DHSA on a 1608?  Thanks for any help!

Denise 
That is a good carb.  Keep it or replace with the same if it is broken or go 
dual carbs for power upgrade.
The theory as I recall it is a small bore carburator is best for low end torque 
and a big bore for horsepower and high revs.  The small 28mm primary and bigger 
secondary of yours trys do it all. 



Cheers
Ron
1979 124 Spider  93 Miata 

"It is no coincidence that first culture to brew beer commercially also built 
the pyramids to keep it cool. But, the Pharaoh used it for a burial monument so 
they built another, which also became a tomb. So they tried again and again 
with always the same result. Little wonder that the empire of Egypt is full of 
pyramids and that taverns or pubs have been small ever since."

Denise Burchette wrote:
: Does anyone have an opinion on what the best carb would be to replace the 
: original 28/36 DHSA on a 1608?  Thanks for any help!

This is an excellent carb that combines economy and performance. You did not 
say what you are looking for in the replacement. A carb with better 
performance, such as the 34DMSA will result in only a slight performance 
improvement while losing several mpg. 

Pete
69 124 Sport Coupe

Pete Angel (Pikes Peak, CO) wrote:
: Denise Burchette wrote:
: : Does anyone have an opinion on what the best carb would be to replace the 
: : original 28/36 DHSA on a 1608?  Thanks for any help!
: This is an excellent carb that combines economy and performance. You did not 
: say what you are looking for in the replacement. A carb with better 
: performance, such as the 34DMSA will result in only a slight performance 
: improvement while losing several mpg. 
: Pete
: 69 124 Sport Coupe

Thanks for the reply fellas.  I'm asking for a friend of mine but  I ran into 
the same problem he's experiencing.  After rebuilding the carb, it ran rich, 
no matter how it was adjusted.  Does anyone have a suggestion on who to send 
it to for a rebuild?  I hear certain parts are not available for it.

As others have noted, it's a nice carb and I have put several on TCs in place 
of the later ADF.  I even converted mine to mechanical secondary.  Sounds like 
something went back on wrong.  I'm certainly willing to take a look at it.

Carl in Virginia

1980 spider  IDFs/Whoa Brakes
1988 Alfa Milano
1974 X...

Carl Friedman wrote:
: As others have noted, it's a nice carb and I have put several on TCs in 
place 
: of the later ADF.  I even converted mine to mechanical secondary.  Sounds 
like 
: something went back on wrong.  I'm certainly willing to take a look at it.
: Carl in Virginia
: 1980 spider  IDFs/Whoa Brakes
: 1988 Alfa Milano
: 1974 X...

Thanks Carl!

Denise,

I'm running a 32/36DFV on my '71 with a 1608.  I like it because it's slightly
larger, so has better flow at wide-open throttle and it has a mechanical
secondary instead of the vacuum one.  The top is also the same shape so one can
use the stock air cleaner.

Csaba
1971/85.5 124 Spider, 1967 850 Coupe'
Personal: http://www.geocities.com/f124ss
Work: http://www.vickauto.com

I'll pass on the info!

Denise Burchette wrote:
: Does anyone have an opinion on what the best carb would be to replace the 
: original 28/36 DHSA on a 1608?  Thanks for any help!

Here is some interesting reading: http://www.mirafiori.com/pbs/pbsdohc.html

I put a 34DMSA with a 1.8L intake manifold on my 1608, and was pleased.  As 
Pete said, there may have been an almost minimal drop in gas mileage, from 
about 28-29 mpg to about 26-27 mpg, but I was also changing from a 1438cc to a 
1608cc engine at the same time, so who's to say where the real difference was.

The one thing that I especially liked is the mechanical secondary, as opposed 
to vacuum secondary on the DHSA carbs.  I can say for sure that the car felt 
more punch to it, and probably because the vacuum secondary never worked quite 
right, and unless you have some kind of sensor to tell you that it is moving, 
you never really know for sure that it is moving.  If your friend sticks to the 
DHSA, I would suggest that he try to modify the vacuum to a mechanical operated 
secondary.

alvon
1970 Fiat spider, 1608cc