Weber carbs

[nick]

Can someone tell me the difference between Weber DFV and DGV carbs? Is one better over the other for the TR7?


nick
'79 TR7

[Marsu]

[url="http://www.webercarburetors.com/ppw/html/aplication_guide/types.htm"]This page[/url] cites the differences as follows:<font face="Arial">

The basic design of the DFV Carburetors is that of the DGV Series. but as a mirror image, with the primary and secondary barrel position reversed in the body While the throttle lever in the DFV rotetes in a clockwise motion it rotates counter clockwise in the DGV. The DFV also features a power valve circut to facilitate low vacuum running conditions-perfect for long duration, high output situations. </font id="Arial">

[trekcarbonboy]

I can't tell you the difference between these 2 but I do have the DGV water choke version in my car. I got them from a salvaged car I got for $100. I couldn't wait to get them on and I can say that they made a <u>slight</u> improvement. BUT... I went from getting 26mpg with my ZS's to 12 to 16 (depending on my driving) with the DGV's. And yes I did install a fuel pressure regulator. I don't think the difference in performance was enough to make it worth it. Now I don't know much about tuning carbs so I'm at the mercy of my mechanic here but maybe they just aren't tuned right. I've read what info I can find about tuning them but it's greek to me.

Craig

[Cobber]

<font face="Comic Sans MS"><font size="2">I find it puzzling that in the US there is a preference for Down draft Webers on their TRs, when the rest of us use side draft Weber DCOEs or Dellorrto DHLAs if we want to max our VE by carburation. [?]

And Trek, You should be getting much better than 12-16 MPG! You need to find a carby specialist to set the things up properly or failing that you might try an Italian car specialist, they should at least have experience with Webers, which I gather your bloke does not. </font id="size2"></font id="Comic Sans MS">

80'Triumph TR7, , 73'Land Rover (Ford 351. V8),
'89 Ford Fairlane
85'Alfa 90, 69'Ford F250.
76' Ford F100

[jclay (RIP 2018)]

The downdraft Webers are the big thing for MGBs here in the states, but they usually only install one. I get 19 MPG, but I know that my idle screws are set too rich, the idle is too high and from the sounds of my car when I start it in cold weather, the choke is sticking on one of them.

I am sure that if I switch to Stromburgs, I would get better gas mileage, but then I really like the way the thing runs now.






Clay

[url="http://web.mac.com/jclaythompson/Site/Welcome.html"]My Triumph Site[/url], [url="http://web.me.com/jclaythompson/Technical"]Technical Stuff[/url], [url="https://docs.google.com/?hl=en&tab=wo&authuser=0&pli=1#folders/folder.0.0B6b9tx6hnkzLYzM5MmNhYWItZjliYS00M2QzLWE1M2YtNWNlZWIzZjExZTdm"]Download Page[/url]

[Marsu]

<blockquote id="quote"><font size="1" face="Century Gothic, Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by jclay</i>

... the big thing for MGBs here in the states...

<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">

Amazes me to see that all MGBs in the above pic are "rubber nosed".

Most here in Australia seem to be chrome bumper and I still meet ppl that are converting from rubber to chrome.

[FI Spyder]

In larger car shows there are usually a zillion MGB's so they group them by year/years so rubber bumpers are often grouped together. Converting them to chrome bumpers makes them not applicable for collector plates/insurance (here) plus as far as died in wool MGB fans you're not fooling any one. That may be the situation in the picture.


TR7 Spider - 1978 Spitfire - 1976 Spitfire - 1988 Tercel 4X4 - Kali on Integra - 1991 Integra - Yellow TCT