ponyspanker

Hey brought up a post in the 2nd gen site and they referred me to you guys. Anyway i want to put a Weber 48mm downdraft carb in place of my fuel injectors. Now is this a big deal or a waste of time? Am i opening pandoras box here or what. I had that same carb on my 1st gen, but that was carb to carb. Is it going to play hell on my ecu and other pointless expensive comps?

gsl-se addict

iTrader: (3)

Installing shouldn't be a problem. Most report large power gains with a carb like that. Your fuel mileage will probably suffer, though. Is this a 6 port engine?

You will need the carb, manifold for 6 port 13b, return style fuel pressure regulator w/ gauge, and linkages/cables. Most of what you would be removing, the ECU won't care about. However, there will probably be an issue with the TPS. You could remove the ECU, CAS, and all related emissions and just run a first gen distributor and the carb. This would give a clean engine bay. I bet most of the 2nd gen guys think this is a downgrade that you are doing. It seems that most 2nd geners prefer EFI. Here, there are probably as many or more people that prefer carbs.

I like EFI myself, but you can't deny the simplicity of carbs. I say go for it if that is what you want. The other option would be to go standalone (Haltech, etc.) if you want to stay EFI, but upgrade.

Kent

trochoid

iTrader: (6)

Do I get a cookie for the referral?

13B4port

yea, lets go get you an English cookie.

frigidmonkey

can you restrict the FI fuel pump that much? or would you eventually burn it up? would you be better off changing out the fuel pump? And after changing the distributor, do you need to use old style coils? or can you use the 2nd gen coils with the 1st gen dizzy? What block off plates are going to be needed... OMP and fuel injectors? any others? Does the ecu effect the charging system at all?
Can you tell I'm wanting to do this swap too, LOL. Except I'm thinking side draft, or RB holley

Siraniko

iTrader: (13)

Your title is very misleading. it sounds like you're looking for a male partner.


j/k

credible_hulk

You can use the stock fuel pump in a carbureted application if you use a return type fuel regulator. This regulator will allow any excess fuel to be pumped back to the gas tank, allowing the high pressure pump to work in a normal manner.

ponyspanker

oh yeah guys it is the 6 port engine. so it shouldnt be too much of a problem then, right? i was just mainly worried about the electronic gizmos with efi efu and other acronyms i have fun trying to figure out. so basically i am going to have to get a 1st gen dizzy with coils(?)and block off plates. and the little details of putting it on (vacuum and modified fuel hoses) and also another fuel pump? doesnt sound too bad

frigidmonkey

sorry for asking more questions, but is a 48mm big enough for a 13b?

credible_hulk

A Weber 48 DCO or IDA is plenty of carb for a 13B.

frigidmonkey

hulk , could you recommand a brand and model regulator please, I'm not familiar with the return type

frigidmonkey

I just got offered a GREAT deal on a racing beat 4bbl manifold, so it looks like I'm going either 600 holley or 600 edelbrock.

frigidmonkey

also got a great offer on a mikuni 44phh, so who knows
but anyway, what do we do with the inector ports? block off plates? or is it more complicated than that?

credible_hulk

frigidmonkey,

Summit Racing sells an Aeromotive bypass fuel pressure regulator that I currently use. It works great. As far as blocking off the injector ports, Racing Beat sells a fuel injection plug kit.