so, my carb hasnt been tuned yet, im uust curious if anyone knows what my deal is.



ive got the rb prepped holley 600 double pumper setup, untuned.



ok, car runs, has a good bit of power only if i either floor it off the line, or downshift and floor it.



however if i keep it in gear and floor it, it just kinda puts along, doesnt really have much power.



has anyone with this setup experienced this, is it a tuning or jetting issue?



i was told it was propperly jetted from RB before being sent out.



thiis is on a gsl-se engine with a stock port.

your accelerator cable still loose?

[quote name='Shane.Trammell' date='Sep 7 2005, 11:21 AM']your accelerator cable still loose?


[/quote]



you know im ghetto, i rigged it from inside the car using somethign to space the cable after the accelerator pedal bar.



you know how i roll son! https://www.nopistons.com/forums/pub...IR#>/bling.gif

i still don't understand why do you ditched a perfectly fine EFI, but it is your car I suppose.

he says the injectors were going out, but there wasnt any proof of that that i saw.

[quote name='Shane.Trammell' date='Sep 7 2005, 12:00 PM']he says the injectors were going out, but there wasnt any proof of that that i saw.


[/quote]



oh well, its not having hard start problems, no more idle problems.....



so yeah, i will leave it at failing injectors lol....



simply put i cant feel right not having an exuse to spend that much money on car parts.

would it not have been cheaper AND easier to send the injectors out to be cleaned and tested? or just buy new injectors?



it just makes no sense to me. now i can understand if you were using a blow thru turbo carb kit later on. which you are, right?

[quote name='rowtareh' date='Sep 7 2005, 04:35 PM']would it not have been cheaper AND easier to send the injectors out to be cleaned and tested? or just buy new injectors?



it just makes no sense to me. now i can understand if you were using a blow thru turbo carb kit later on. which you are, right?


[/quote]



well i refuse to say im goign to boost it one day, but well, im going to boost it one day, after i get a beater of course and get myself out of the debt im currently in

cool, i saw some blow thru carb turbo's on vw bugs, sandrails, etc. and they looked pretty cool!

600cfm mech secondaries is too big for a 13b.

hey guys ever since we installed the carb its doing something weird. when you turn the car off, and since matt installed a manual switch to control the pump, turn the pump off the car keeps running. it eventually dies out which is when the bowls dry up. how can this be fixed?

You gotta cut the ignition off, not the fuel. What, do you have constant power to the coils?

[quote name='RONIN FC' date='Sep 8 2005, 02:25 PM']You gotta cut the ignition off, not the fuel. What, do you have constant power to the coils?


[/quote]





well you turn the key off and the fp switch but it doesnt stop running. you take the key out and walk away and it doesnt stop running. if you dont turn the pump off it stays running

You need to have switched power to the coils, not constant. Should be no power to the coils with key off.

isnt that how it should be stock?

hah, now people think i have a boosted beast of a car lol

ok so even though racing beat modified this carb to run with on a 13b stock port matt believes the guy at the local, ive never been there but im guessing its redneck and specializes in dirt track racing v8s (lonestar racing), race shop when he said that those secondary jets are too big. I said matt rb built that carb for your motor and i think they know what they are doing, but he says that the guy at the shop has been "around" rotaries so he knows what hes talking about. Well my gf has been "around" rotaries for quite a while now but i dont think she knows much about them.

So now he wants to change the jets for something smaller. What is involved in changing jets?





matt i think im going to start charging you for doing unnecessary work on your car. after working for 4 days to get this unnecessary carb setup installed and running, ive realized that its not worth all of the work involved for the bleak results that are achieved. youre so quick to make a judgement of what you need to do to your car before you even research it with people who know (ie. nopistons), and then i end up doing the research for you.



i dont know, maybe im just in a crappy mood

[quote name='Shane.Trammell' date='Sep 13 2005, 04:30 PM'] So now he wants to change the jets for something smaller. What is involved in changing jets?


[/quote]

Its simple, open the secondary bowl, unscrew the 2 jets with a large flathead screwdriver.

[quote name='Shane.Trammell' date='Sep 13 2005, 01:30 PM']ok so even though racing beat modified this carb to run with on a 13b stock port matt believes the guy at the local, ive never been there but im guessing its redneck and specializes in dirt track racing v8s (lonestar racing), race shop when he said that those secondary jets are too big. I said matt rb built that carb for your motor and i think they know what they are doing, but he says that the guy at the shop has been "around" rotaries so he knows what hes talking about. Well my gf has been "around" rotaries for quite a while now but i dont think she knows much about them.

So now he wants to change the jets for something smaller. What is involved in changing jets?

matt i think im going to start charging you for doing unnecessary work on your car. after working for 4 days to get this unnecessary carb setup installed and running, ive realized that its not worth all of the work involved for the bleak results that are achieved. youre so quick to make a judgement of what you need to do to your car before you even research it with people who know (ie. nopistons), and then i end up doing the research for you.



i dont know, maybe im just in a crappy mood


[/quote]



Shane, ive done research other places. im sorry that you've done uneccesary work, dont worry about touching the car ever again.



it's as simple as this, i learned how to lean it out, ive leaned it out alot, i can get the secondaries to open all the way, and it richens up in the mids. jets are cheap, so its a good idea to me to spend the 5 bucks a pair for jets and give it a try then to spend 100 bucks getting the carb tuned and then be told its the jetting.



it just seems better to try the cheaper option first.



but i will do it myself from now on.

i dont know how you know it gets richer in the mids, you dont have an a/f gauge.



i dont mind helping you with stuff that is necessary, i just dont feel like spending a lot of time doing these things that probably arent. if you talk to racing beat or a knowledgeable person with experience with this carb on this forum and they say that it needs to be done to make the car run better then i dont mind helping you.

i talked to j9 on multiple occasions about this issue.



thats how i figured out my jetting is most likely wrong.

I just talked to racing beat and they said there is no reason to change the jets. They set it up for the 13b stock port and made 195whp with full exhaust. He did say that you will get a slight hesitation or bogging when the secondaries open bc the jets spray the same amount of fuel all the time. that means they spray the same amount at first opening of the secondaries as they do at 7k. He said that if you do change them out you will be leaning out in your high end.



He did say you need to have the car timed to the specifications listed in the instructions, which may still be at my house or you can call them to get them. He also said that if youre not running an upgraded ignition like msd or something that its best to use the ignition from the 81-83s bc they allow you to adjust the leading and trailing timing and not just the leading.



The timing could be a lot of your problem. You need to be running advance which we did not do when we set it up. I do not have a timing gun so you will need to have that done by someone else.

[quote name='Shane.Trammell' date='Sep 14 2005, 08:53 AM']I just talked to racing beat and they said there is no reason to change the jets. They set it up for the 13b stock port and made 195whp with full exhaust. He did say that you will get a slight hesitation or bogging when the secondaries open bc the jets spray the same amount of fuel all the time. that means they spray the same amount at first opening of the secondaries as they do at 7k. He said that if you do change them out you will be leaning out in your high end.



He did say you need to have the car timed to the specifications listed in the instructions, which may still be at my house or you can call them to get them. He also said that if youre not running an upgraded ignition like msd or something that its best to use the ignition from the 81-83s bc they allow you to adjust the leading and trailing timing and not just the leading.



The timing could be a lot of your problem. You need to be running advance which we did not do when we set it up. I do not have a timing gun so you will need to have that done by someone else.


[/quote]





i think the timing may have alot to do with it, any suggestion on who to go to with the timing gun?

[quote name='fcrotornut' date='Sep 14 2005, 06:54 PM']i think the timing may have alot to do with it, any suggestion on who to go to with the timing gun?


[/quote]



timing shouldnt have changed at all....



you might want to hook the vacuum advances up though

the rb instructions say that you use the stock advance settings, but not the vacuum advance. if the vacuum advance is hooked up im guessing that it would run the same as if the timing was just set to the advance settings





ok matt called me last night after i told him that he needed to have it timed and said that he found out how to set the timing. i said thats great but youll still need to take it to someone with a timing gun to have it done. well to my surprise he says that he already adjusted it (with no light) and it was about 10 or 11 degrees that he adjusted it. basically he loosened the set screw and turned the dist but i dont know if he advanced or retarded, how he knows its 10 or 11 degrees i have no idea. he says that after he did that it was idling at about 2500 so he adjusted the throttle cable to get it to idle down. i cant figure out how he adjusted the cable to get it to idle down but thats what he says he did.



what do you guys think?

I think you 2 should get married with all the bitching.



























J/K man, go buy a timing light and check the timing. Not a hard job to do and timing lights are fairly cheap, I got my Snap On light from a pawn shop.



RB is right about the jets too, you gotta remember the majority of people runnin aftermarket carb arent too worried about the "mids" as you put it. When those secondaries open its no gradual increase, I'd almost bet you bog or hesitate anything under 3500 if you get into it at all. Carbs are a bit different you cant just floor it and expect good results with a rotary.



On a side note what are you guys running for a fuel pump?

this is matts car so were not running anything for a fuel pump, but matt is running a mallory 4070m with an internal pressure reg at 6psi.