i got a dellorto carb and i plan on putting it on my 84 gsl-se in the 45 days or so.

1 i need a fuel pressure regulator that has a return line, but i dont know how much psi is need to for the carb?
1a is there a return line that is with my efi system?

2 Facet fuel pump which one would be best for this thye have rated at 4-6 psi(this way i might not need a regulator or return line)?

3 whos got pictures of the the dellorto carb all set up on there engine? all i have is the base carb. it doesnt have the stacks, filter, or linkage bracket, so i need to so off of someone elses. i think that i might have found a whole carb at a salvage yard near fayetteville nc where im at but i need to see if they still got it i ll buy it

4 i know this is a far shot but will the UIM for the dellorto off a 12A work on the LIM for the 13B



i guess thats it for now till i can think of anymore

 

I ran the Holley Blue pump with a deadend, no return, and had no problems on my Dellorto. I also used the Holley regualtor that came with the pump, worked fine set at 4.5psi Although a return would be better to have, I'm not sure about the SE's if it comes with one or not factory...? I have a GS I'm sure someone will tell ya'.

 

Both the carb and fi 1st gens have return lines. They have different size lines. The fi return is the same size as the carb supply, with the fi supply being the biggest line of any.

The 12a does not have a uim, the carb bolts directly the intake, in stock form. Most of the aftermarket 12a intake manifolds are 1 piece, whether it be the wraparound, ida or lake cities style. The 13b ones replace the the uim so that the aux ports remain functional. There is an adapter plate out there, but I don't recall off the top of my head whether it goes 12a to 13b or vice versa. I think it is the former and is designed for a 4-port engine.

The RB uim for the SE will accomodate any of the 2 barrel performance carbs, Weber's, Dell's, or Mikuni's.

 

so for the fuel all i have to do is get a regulator, say some where around 4-13 psi would good?)

i ll chk with with RS and RB and chk there prices and go from there

thank you
charles

 

I believe that if you pick up the Mallory 4309 fpr, you can keep the oem fi fuel pump. You will need a good fuel pressure gauge and may need to run a larger return line. The 4309 is one of the very few fpr's that can bring fi fuel pressure down to work with carb applications.

The 4309 is pricey, but can save the cost and replumb of a low psi fuel pump. If you want to replace the pump, go with the Mallory Comp 70, it's a gerotor type pump, quieter than the facet styles. Mallory also recommends thier pre-pump fuel filter. By the time you buy all 3, it gets expensive.

 

you can use a holley fpr. Right is INLET; Left is supply to carb. I use the bottom outlet for return (IIRC 1/4 hose). Also, I use F/I fuel lines for added security. It was in my other FB with MSD F/I pump.

 

sense i have FI now i wouldnt need the to change the lines and i wouldnt need to get a fuel pump just the fpr and use the return line and all should be good in that department

 

Damn Wacky...did you throw your K&N in the dryer!

 

dell only needs 2.25psi, that's what i have both of mine set to. A distant shot of mine is here: http://community.webshots.com/photo/...62082535QPEdHR

More good dell info on www.gruntled.com

 

I just got a new dell too. I have some questions also.

What would be a good fuel pump to replace the stock one on a 83 for a Dellorto?

Will I still be able to mount it in the stock location or will it have to be mounted else where?

 

Get the carter from summitracing.com

I use the holley red 114gph but that mother is loud and mine is wearing out on REPU so switching to the carter in near future.

 

i really have been able to find a fpr that is that low with a return line but i ll keep lookin. i ll look at the holly that wacky has. i'd like to use the stock fuel pump (even though on grunted site the RB instutions say to use 2 faucet pumps) but they are cheap so i might pick them up

 

i have been looking at aviation fuel pressure guages, they read like 0-6 or 0-8 psi.

http://www.warbirdrelics.com/avionics_2.htm
i have tried emailing them to see what the fittings on the back are but have gotten no response. part #av93

 

my brother (diabolical1) used a Carter fuel pump with his Dell'Orto when he had it. it worked fine, but was just as loud as my Holley pump. from what i've been reading, the Mallory pump is much quieter and flows just as well ... so maybe you should gve it a try.

 

today i went to the savage yard and i picked up another dell carb and UIM for 150, it came a 12A gls i dont knkow the year, but i was able to get the OMP lines too!!!! will that bolt right on to my SE w/o a problem or am i going to need to get a UIM for a 13B 6 port im going to try and find a FPR from summit or something and use that with a return line. and keep my SE fuel pump ( that should be fine right)? im going to use the 2 carbs and make one good one sense the other one that i have is missing some linkage and the stacks.

 

oh i have another question if i keep my stock se fuel pump and dont use a FPR with a return line will it overload my fuelpump at all, bc what is the stock pump pushing like 35+ psi slowed down to 2 1/2 psi could that over load the pump at all

charles

 

Use the low pressure Malpassi FPR with a return and you can run the stock pump.

 

where can i fond one and how much?

 

bump

 

By not runnig a return line, you will burn up the stock pump. The fuel circulating through it helps cool the pump. If you deadhead the stock fi pump, kiss it goodbye.

As far as the Malpassi fpr, are you familiar with Google?

 

i dont know where im going to get a FPR right low on cash upon other things but i was talkin to a guy that does FI to Carb and he saying that he makes a "T" fitting and hooks the supply in one end and the flow to the carb on the other and the return on the bottom. now heres what im wondering is this posable with out pushing to much psi to the carb?

 

http://rotaryengineering.com/
You can try here for the Malpassi. Albert usually has some available.
It looks like they're a little over $100.

http://www.tweakit.net/shop/index.ph...c1d24f576854ad

Tweakit also has the EFI version...not sure how low they can be turned down, hit them up and ask.

 

I have a couple of used ones I'll let go for $35.00 if your interested send me a PM and we can work out the details. The units I have are actually coming off my race car this weekend.

Thanks
Albert

 

pm'd you

 

i'm too drunk right now to read if this has been answered, but i feed my dell about 3.5psi and as far as i know, there are two manifolds:

racing beat: 2 piece manifold, lower mainfold is 12a/13b specific, but the uppermanifold is the same (upper manifold will mate to s4/s5 stock lower intake manifold (from what i've been told, also counting on this per my 13b n/a motor swap.

lake cities: same overall idea, but one piece and said to have much better flow and power characteristics, but losing the 2 piece modular design.

the dell is a great carb provided you have the right jetting, and it will certianly please you aurally more than any other carb you could think of. However, i still havent got mine tuned, i've decide i'll just wait til i have the 13b in before i worry about getting the carb right (cause till then i'll be driving my volvo 945t, and there's no place for an Rx7 in a central jersey winter.

hope some of this drunk rambling helps, you have no idea how much spelling correction i've done so far...elgnlish goes a lognt wya (thats what happens when i dont re-correct my tpying)/

-Kurt