What jets to run? - Page 2

White00gt · 05-14-2011, 11:56 AM

I knew some Car-bi-nator guys would be along to help

Darryl Buckner · 05-14-2011, 12:00 PM

One day I am going to convert, actually already started, but those $200.00 each Moran injectors is a hard pill to swallow..

White00gt · 05-14-2011, 12:04 PM

Yes but it is the last injector you will have to swallow

.. adjustable FTW just got me some 220's.. and man the spray pattern is B-E-A- utiful, compaired to the 160 bosh/ford CNg injectors I was running.. and the flow rate isn't all fubared around 1-3ms, ahh they are nice.

bwelch · 05-14-2011, 12:20 PM

How much for the 160's if they are still good?

HitsonRacing · 05-14-2011, 09:16 PM

I am running 7 lbs of fuel pressure. I have a oil filled fuel pressure gauge mounted at the outlet of the regulator.
I am going to change the carb to a 750 vac secondary and see how it runs.
It use to run fine with the 750 vac secondary on it before.

Darryl Buckner · 05-15-2011, 12:00 AM

Electric fuel pump? If so, does it have a return to the tank?

HitsonRacing · 05-15-2011, 08:18 AM

stock in tank electric fuel pump with return line

Harry · 05-15-2011, 09:13 AM

Quote:

Originally Posted by HitsonRacing

I am running 7 lbs of fuel pressure. I have a oil filled fuel pressure gauge mounted at the outlet of the regulator.
I am going to change the carb to a 750 vac secondary and see how it runs.
It use to run fine with the 750 vac secondary on it before.

7lbs could be a little high. Try 6 and run it. If that doesn't work try 5 lbs. I wouldn't go any lower than 5lbs though. Anywhere in between thouse #'s will work also to fine tune it.

WWhittle · 05-15-2011, 10:17 AM

Are u driving it back to the pits and checking the plugs? If so, of course they are going to be black. If u want to read your plugs you need to shut it off as soon as you go through the traps and tow it back.

BigdaddyDupree · 05-15-2011, 10:38 AM

Kill it at the eighth let it coast pull a plug swap a new one with it. Drive it to the trailer. Read the plug. Adjust.

Illusions · 05-15-2011, 11:04 AM

Quote:

Originally Posted by WWhittle

Are u driving it back to the pits and checking the plugs? If so, of course they are going to be black. If u want to read your plugs you need to shut it off as soon as you go through the traps and tow it back.

x2, every serious nitrous user I know does it this way while tuning it.

WWhittle · 05-15-2011, 11:53 AM

Quote:

Originally Posted by BigdaddyDupree

Kill it at the eighth let it coast pull a plug swap a new one with it. Drive it to the trailer. Read the plug. Adjust.

If you are going to do it this way, I would pull atleast 2 plugs. One from the front and one from the back.

WWhittle · 05-15-2011, 11:55 AM

Quote:

Originally Posted by Illusions

x2, every serious nitrous user I know does it this way while tuning it.

Yeah, the only way to tune off a set of plugs is to have a fresh set of plugs and shut it off as soon as you go through the traps. Otherwise, you are trying to tune for WOT off a set of plugs that are showing you your idle and part throttle.

Illusions · 05-17-2011, 07:18 AM

Quote:

Originally Posted by WWhittle

Yeah, the only way to tune off a set of plugs is to have a fresh set of plugs and shut it off as soon as you go through the traps. Otherwise, you are trying to tune for WOT off a set of plugs that are showing you your idle and part throttle.

That's why i have a 4wheeler at the track. when we make changes up or down in jet size she gets towed back and plugs read.

RobertHolton1 · 05-17-2011, 09:10 AM

Quote:

Originally Posted by HitsonRacing

stock in tank electric fuel pump with return line

so did you fix your problem

05-14-2011, 11:56 AM	#21
White00gt Senior Member Join Date: May 2010 Location: PI, S.C. Posts: 565	I knew some Car-bi-nator guys would be along to help __________________ M. Ragland . Dropbox sign up link +space http://db.tt/9sBmLpl

05-14-2011, 12:00 PM	#22
Darryl Buckner The Top Dog Join Date: Dec 2007 Posts: 2,318	One day I am going to convert, actually already started, but those $200.00 each Moran injectors is a hard pill to swallow.. __________________ When the people fear the government, there is tyranny. When the government fears the people, there is liberty. Thomas Jefferson

05-14-2011, 12:04 PM	#23
White00gt Senior Member Join Date: May 2010 Location: PI, S.C. Posts: 565	Yes but it is the last injector you will have to swallow .. adjustable FTW just got me some 220's.. and man the spray pattern is B-E-A- utiful, compaired to the 160 bosh/ford CNg injectors I was running.. and the flow rate isn't all fubared around 1-3ms, ahh they are nice. __________________ M. Ragland . Dropbox sign up link +space http://db.tt/9sBmLpl

05-14-2011, 12:20 PM	#24
bwelch Senior Member Join Date: Aug 2009 Posts: 3,774	How much for the 160's if they are still good? __________________

05-15-2011, 12:00 AM	#26
Darryl Buckner The Top Dog Join Date: Dec 2007 Posts: 2,318	Electric fuel pump? If so, does it have a return to the tank? __________________ When the people fear the government, there is tyranny. When the government fears the people, there is liberty. Thomas Jefferson

05-14-2011, 09:16 PM	#25
HitsonRacing Member Join Date: Apr 2011 Location: Summerville, SC Posts: 11	I am running 7 lbs of fuel pressure. I have a oil filled fuel pressure gauge mounted at the outlet of the regulator. I am going to change the carb to a 750 vac secondary and see how it runs. It use to run fine with the 750 vac secondary on it before.

05-15-2011, 08:18 AM	#27
HitsonRacing Member Join Date: Apr 2011 Location: Summerville, SC Posts: 11	stock in tank electric fuel pump with return line

05-15-2011, 10:17 AM	#29
WWhittle Senior Member Join Date: Apr 2008 Location: Mt. Pleasant, SC Posts: 3,899	Are u driving it back to the pits and checking the plugs? If so, of course they are going to be black. If u want to read your plugs you need to shut it off as soon as you go through the traps and tow it back.

05-15-2011, 10:38 AM	#30
BigdaddyDupree Senior Member Join Date: Jul 2008 Location: MACEDONIA Posts: 4,967	Kill it at the eighth let it coast pull a plug swap a new one with it. Drive it to the trailer. Read the plug. Adjust. __________________ . What you wanna do?