this maybe a stupid question, or thought provoking. Has anybody ever run a carby ona vg30dett instead of fuel injection. Looking to build a project, not in a z32 body, but i would like to run a vg30 motor. If so could you rid of all electronic controls? just after thoughts Thanks
Anything is possible but it is a huge amount of work for a downgrade. Stick with injection on a vg30 or choose a different v6 for a carbd application. That would be my advice
Go for it. Although it may be easier to harness a horse up to the front. And really only one step backwards from a carbie.
On a more constructive note if you want to get rid of the ECU completely then a VG30E block would be more suitable than a DE. The older E engine has distributor/coil ignition which would be awkward to retrofit to a DE engine.
It wont be fitted in a 300zx, the main reason for the downgrade is the reliability issues with the electrical and difficulty in tuning.
EFI is actually more reliable if you fix it properly. If you're a carby wizard then it might be worthwhile for you but there are buckets of reasons to stick with the standard system.
ok more for the efi than not so thats the way, just thought a transplant into another body would be easier without it.
the biggest problem you'll have with the efi system is the looms on our cars are getting pretty brittle. You'll have to share what the project is now
If you are not worried about fuel economy, carburetor is awesome. Its much simpler to set up, its cheaper then EFI to setup from scratch. EFI is about economy and precision, that precision can bring performance benefit but not as much as you might think. A few years back I went out to Willowbank drags for a test and tune with a group from the forum, watching the cars that were heavily modified, nearly all the carby cars ran ok to well, nearly all the EFI cars ran poor to shit. It is highly dependant on what your goals and resources are but saying carby is less reliable, less permanence capable, harder to setup etc for what ever reason is wrong, very wrong. (These comments are in general not withstanding availability of intake manifolds.) But you can say EFI can produce better fuel economy. There is a carby version of the VG, a VG30S.
If you were building the system from scratch carby might be easier but nissan have been kind enough to engineer an efi system that just needs to be dropped in. As ever the the rule is whatever you do, do it right. I leave my tuning to other people but playing with numbers in a table sounds more straight forward than swapping jets trying to find that sweet spot.
That is the point, EFI is easier because it is already done. Not because carby is bad. When he said "project", I jumped the gun and thought he was thinking boosted blow through carby, and would be all for it on a drag car. But not for most situations and by the sounds of it not for what the OP has in mind. But don't bag the carby. [TIS]
exactly right dont bag the carby, you dont see many efi drag cars. Ok I am a member of a regional drag club. We have a burnout pad for fund raising, which needs some encouragement. I am planning on building a burnout car, a mini with a either a vg30 or a small v8. At the moment i am weighing up the options and possabilities. as you can see economy is not needed, it only needs to do 3 minute runs. I have plenty of vg30 parts. however i am leaning on the v8 easier to supercharge.
Unless you are totally in love with a vg30 then it's pointless Use a gm 3.8 v6. Way more aftermarket support for a carbd application.
I agree, use a different motor. I grew up messing with carbies and can't stand them now! Nightmare to keep running right and when you do, all it takes is a slight change in weather and its running like shit again! Planning to get something old school eventually but first mod will be efi! Yes they run carbs in drag racing because the rules are so outdated! Had some carby bikes not long ago and ditched them in favor of injected bikes simply for reliability.
It really depends on the brackets in drag racing. theres not many that can tune an efi system in half an hour between runs. Drag racing is about optimum tuning, air density, temperature, air fuel ratio, etc. What is the P76 motor known as. are parts and mods readily available.what ever I do I need it to rev hard for 3 to 4 minutes.
Yes that is the problem, people "messing" with stuff they do not understand. "Messing" with a carby can produce unexpected results, where EFI is hard for the average n00b to mess with, but yet they still manage to bugger it up. Also people "experience" with carbies is generally with 20 year old shit boxes, with an open mind you will see that that experience is similar to a 20 year old 300ZX EFI with zero maintenance, broken plugs faulty components etc. A large majority of peoples opinion bagging carby and praising EFI is like the pod filter scenario. "Hey man I just fitted a pod and she is complete baller now, man those pod filters add soooo much horse power." Could it of been that the new pod filter was clean and the old panel filter was clogged ??? I just got a brand new EFI car and it soooo much better then my 30 year old carby car, carbies are ****ed. :rolleyes2: There is no doubt EFI is an improvement but not as much as you think. I have had all manor of carby and EFI bikes and cars and to be frank I had bugger all problems with any of them, but then again I don't buggerise stuff either and I maintain and fix as required.
Thought provoking Brisz, So at the end of the day for an engine that you want rev the sheeeeeet out of fro 5 mins at a time, which way would you go, carboy or efi. it will not normally be driven but must idle at some sort of rev range. It goes against my grain to do something like this. by the way space is limited that is why I was looking at vg30. I have an abundance of vg30 gear, just not wiring looms etc. I thought going carboy might be easier on the day. Thanks for your real input.
