Kevint143 Posted February 20, 2013 Share Posted February 20, 2013 Hey so I recently installed the weber 32/36 on my 79 BRAT and I have notice a drastic drop in my gas mileage. Just going off my Trip meter I was pulling about 220-250 miles with the hitachi per tank(generally filled with a 1/4 left) and now I am done with my first tank with about 1/4 left and I am barley breaking 100 miles on my trip meter. I did a search and it seems the weber should give me about the same or better fuel economy. Did I do something wrong? Link to comment Share on other sites More sharing options...
Kevint143 Posted February 20, 2013 Author Share Posted February 20, 2013 did a search via google and found a thread about this topic Link to comment Share on other sites More sharing options...
maestro Posted February 20, 2013 Share Posted February 20, 2013 Can we see this thread? I had the Hitachi on mine and it seeped fuel, sucked air and ran rich. I could never get it right so I did the same swap. I got 17mpg before and after the swap. It runs much better with the weber. Not running rich at all and is much smoother. I'd heard we should get improved mileage and power from this swap. I seem to get neither. Just runs better which is a good thing. Just not all that I expected. I also hear people saying the get 30mpg out of these old brats? What are we doing wrong? Link to comment Share on other sites More sharing options...
Kevint143 Posted February 20, 2013 Author Share Posted February 20, 2013 Ill post the link when I get home from work tonight. But if anyone wants to leave some tips in the meanwhile I'm sure I wouldn't be upset =) Link to comment Share on other sites More sharing options...
Idasho Posted February 20, 2013 Share Posted February 20, 2013 Key to the weber is the tune. That includes possibly having to switch jets. Link to comment Share on other sites More sharing options...
maestro Posted February 20, 2013 Share Posted February 20, 2013 I would assume that since redline has the conversion kit you can buy just for the subaru 1600's that it would come with correct jets. I adjusted my air screw per the instructions. Smooth idle and doesn't smell rich. I am no expert on this topic though. Anyone else had to change the jets? Any experience adjusting and tuning these for our engines out there? Link to comment Share on other sites More sharing options...
Idasho Posted February 21, 2013 Share Posted February 21, 2013 Weber has a very simple tuning guide that will tell you if you need different jets. It isnt as simple as slapping on a kit that is supposed to be perfect for your application. Even weber states this. Lots of variables dictate your particular tune, thats why each and every car with the "same" weber is running with a slightly different tune, Heck, just a few thousand feet elevation difference can be enough to warrant different jets. A quick google search found this weber guide. http://www.classicinlines.com/WeberTune.asp Link to comment Share on other sites More sharing options...
maestro Posted February 21, 2013 Share Posted February 21, 2013 I just read that weber guide... o Jesus Link to comment Share on other sites More sharing options...
ShawnW Posted February 21, 2013 Share Posted February 21, 2013 The kit is the same part number for 1600 and 1800. Most find the jets suitable but if you wanted to really fine tune it jets are going to be necessary. They sell a jet kit that has a lot of different sizes if I remember correctly. I will call Redline tomorrow to confirm and post pricing. Link to comment Share on other sites More sharing options...
Kevint143 Posted February 21, 2013 Author Share Posted February 21, 2013 Thanks Shawn! Sorry my phone kept cutting out yesterday. Link to comment Share on other sites More sharing options...
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