quansta Posted November 3, 2003 Share #1 Posted November 3, 2003 I have a 73 240z and have a head kit done with cams, seals, springs, etc., headers, exhast, but I am not sure were to go with carbs. I am looking at a four barrelled conversion or the performance SU's. what is the better choice for my engine???i also have a five speed tranny if that makes a difference. Link to comment https://www.classiczcars.com/topic/8703-what-carbs-are-the-best/ Share on other sites More sharing options...
2ManyZs Posted November 3, 2003 Share #2 Posted November 3, 2003 Personally, I'd go with a set of 4 screw SU's from ZTherapy if money permits.I've heard that the four barrel conversions sometimes have fuel distribution issues that can cause some cylinders to run leaner than others because of the way the runner of the intake are designed. If you look at one, you'll see #1 and #6 intake runner are considerably longer than the ones for 3 and 4. The SU manifolds have nearly equal runner lenghts for all cylinders. Link to comment https://www.classiczcars.com/topic/8703-what-carbs-are-the-best/#findComment-55729 Share on other sites More sharing options...
bump240z Posted November 4, 2003 Share #3 Posted November 4, 2003 what does everyone think of weber DGV? thats what i have on my Z that i just got. how do they compare to SUs? Link to comment https://www.classiczcars.com/topic/8703-what-carbs-are-the-best/#findComment-55881 Share on other sites More sharing options...
280zx Fever Posted November 6, 2003 Share #4 Posted November 6, 2003 Personally i havent had alot of experiance with the SU's on the Z's but they seem to be good for what they are.. a old carby though they where ahead of there time when they cam out Personally i would go for Triple 50mm webbers, dont go any smaller because you can get chokes to suit the engine more if you go larger you can choke down but if you go too small you cant make em bigger Link to comment https://www.classiczcars.com/topic/8703-what-carbs-are-the-best/#findComment-56015 Share on other sites More sharing options...
beandip Posted November 8, 2003 Share #5 Posted November 8, 2003 There is a guy normthe12secdude He frequents the zcar.com site and he runs in the 12s with SUs . He is in Seattle Wa. Link to comment https://www.classiczcars.com/topic/8703-what-carbs-are-the-best/#findComment-56265 Share on other sites More sharing options...
tanny Posted November 8, 2003 Share #6 Posted November 8, 2003 I have triple Webers and the only thing I would advise on these is to find someone who knowsw them well to give you some help initially in getting them jetted properly. Actually pretty simple carbs and easy to modify. Look nice also. Victor. Link to comment https://www.classiczcars.com/topic/8703-what-carbs-are-the-best/#findComment-56294 Share on other sites More sharing options...
Tourniqet Posted November 16, 2003 Share #7 Posted November 16, 2003 I have weber DGV's, They seem to be the second choice of the weber family considering the DCOE's but they are still good carbs in my opinion. I don't know much about carbs and got them to run pretty good, so they are reletively simple. They make good power for me. Some say they dont flow as well as the DCOE's because they are downdraft carbs, but I think this would only be a restraint higher race-like applications. I would have chosen the DCOE's but no one was giving them away, like they were the DGV's :classic: Link to comment https://www.classiczcars.com/topic/8703-what-carbs-are-the-best/#findComment-57237 Share on other sites More sharing options...
Yarb
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