hey guys maybe someone can point me in the right direction.i have a 84 gsl we took the rats nest off and we added a RB intake with a holley.same set up that RB sells but used.the problem is that she idles fine but when i start driving she "bogs" under load.loses all power feels like im on a horse.
we change the plugs,wires,fuel filter.
i am still using the OE fuel pump though.
any help would b greatly appreciated.
thanx,Eric

 

there is your answer. holley carb wants to see about 6 psi regulated

 

any ideas on which one to get?
u think thats why she's bogging like that?

 

any pump capable of 6psi [holley ,mallorey carter] and a good regulator. the stock pump puts out about 2.5 psi at best and wont keep up with your new carb demands. also make sure your vacume advance is hooked up

 

get a barry grant adjustable fuel pressure regulator with the guage on it so you can see where you are at. Do not trust the cheapo adjustable in line ones. Sounds like your float levels may be off too. Is it a vac secondary our double pumper carb?

Lastly, I hope you still have the omp hooked up or premixing.

 

it's a vac secondary.and yes we did hook up the omp.
so the census is to replace the pump,those were my feelings i just wanted to make sure and ask the experts
thanx to the guys that came to the rescue and really glad i join the forum.
will change it this weekend and see how we do.

 

I would check the fuel pressure with a gauge before spending the money. Did you adjust the floats? If it is used, did the previous owner make it a mechanical secondary with a screw in the linkage (bad idea)

 

yeah i bought used from RED here in the forum,and no he didnt put a screw on the linkage.someone told me thats what they used to do to them back in the day.I havent check the fuel pressure yet but i think i might as well get the pump anyway.you wouldnt happen to have a part # on any pump u would recommend do you?

 

Factory fuel pressure will vary and is acceptable for a nikki at 3.7 to 4.7lbs (nikki only needs about 3), so if you're running at the high mark you are close to being okay, lower, not so good at all for the holley. A nikki takes it slow, the holley wants to be pounded like a ***** in comparison.....lol

 

Any aftermarket electric pump for "carbs" would be fine.

 

lol oh trust me cant wait to get my **** all done up so once in a while i can pound on her.i see that some say GPH any would do?as long is electric pump for "carbs" of course.and what do i set the regulator at 6lbs?

 

u can get the 6lb facet pump that RB sells or get some other pump and have to also buy a regulator. i'm running the facet.

 

I checked out the for sale thread on your purchase, looks like you did well.

 

you will never get it running with the stock pump, get a holley red or blue. done deal.

trust me, i tried the same thing

 

I will ditto and benefit from anothers experience....

 

i WILL SECOND THAT WITH AN AMEN!
Thanx to all u guys that came thru for me again.
went out and got me a holley blue,a nice holley regulator,a real nice FPG all new #8 fittingsand new stainless steel fuel lines with all braided lines on the engine.spent some money but it's worth it to me.will b putting everything on monday.all i'm missing its a

 

RB header.i will b putting a msd6al but not this go around.

 

Great choice! Now you're gonna have to learn how to tune your holley.....a wideband would be a good investment one day...

 

thanx stock,here's a newbie question whats a wideband?and i just got a RB header that was cut to make it dual almost to the back than it goes into one before the bend to the muffler.guy said that u get a little more power.i'll b running it straight to a RB muffler my concern is that it will b to loud.
any thoughts?

 

you will need a presilencer for each of the two pipes! A wideband shows your actual air fuel ratios as you drive and accelerate, it's a great tuning tool.

 

do i really need the presilencers or can i just run it straight back to the muffler.mind u i only have a safety inspection where i live.
where can i get one of this widebands?

 

You need the presilencers or everyone around will roll up their windows and your ears will bleed. As for the wideband, get the autometer kit, its about $300 ish...if it isn't in the budget I can guide you through tuning your holley by feel and the use of a simple vacuum gauge, just pm me.

 

hey stock question,the pump went in all braided lines looks really
the bogging went out but she still not running good.someone told me its because i'm running it without the header yet.that i have to put it on .any thoughts about it.
thanx for all your help,you the man

 

My 650 double pumper has that screw lol... I was wondering wtf that was so why is that a bad thing ?

 

there's going to be all kinds of opinions of what's loud and what's not, what u should and shouldn't do, and whether a screw in the secondaries to make them mechanical is a good idea or not. i have the screw and no problems. i run the rb streetport exhaust system but with no presilencers. yes it's louder than most prefer but i like it. if i need to find it i have a vid on youtube of how it sounds. best thing to do is to set up ur exhaust like u want and see if it's too loud for u. and no it wont make ur ears bleed, that's alittle bit of an exaggeration. and ppl already have their windows up cause they're running their a/c.