nitrous prob...
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From: Lee County, VA
nitrous prob... just got my nitrous put on my car today and i tryed to spray it two time...my car is an AUTO and i got the window switch set to 3500 to 5000 rmps..but at about 4500 rmps, the car starts cuttin out and at the end of first gear and the first of 2nd gear it starts studdering and shackin and dieing out...i got back to shop that put the kit on(had done 100's of nitrous setups) and he said i have the wrong jets and i was flooding the crap outta my engine....
im useing the 55 N20 and 31 fuel jets which is what it says to use on my calibration card for 33PSI
but the shop said i should have had 31 and 29 cause i was runnign 50 PSI
what jets should i use????i only have full exhaust and nothin else
im useing the 55 N20 and 31 fuel jets which is what it says to use on my calibration card for 33PSI
but the shop said i should have had 31 and 29 cause i was runnign 50 PSI
what jets should i use????i only have full exhaust and nothin else
Sorry, but I don't think it would do that unless there was a huge freakin' fuel jet in there. I've ran on an empty bottle with all fuel and NO nitrous going into the engine, and it just feels slow. Did they install colder plugs? Are they gapped correctly?
Also, I'm assuming your transmission shifts around 5900 RPMs...set the window switch to deactivate at 5700-5800.
Also, I'm assuming your transmission shifts around 5900 RPMs...set the window switch to deactivate at 5700-5800.
Thread Starter
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From: Lee County, VA
yea colder plugs...TR6's i suppose they are gapped correctly...the guy KNOWS what he is doin...i also have cats and the rear 02's are out and the chek engine light is on if that matter
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Thread Starter
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From: Lee County, VA
thats how the calibration card is...
it is like so...
HP.....N20......FUEL.....PSI
25......24.......18........38
....................16.......50
50......33........25.......38
....................22.......50
75......42........28.......38
....................22.......50
100.....55.......31.......38
....................29.......50
theres an exact copy of my calibration card...u guys tell me what u think
for a 100 shot i had a 55 and 31 jet in and my performance guy said i should have had a 55 and 29 according to my calibration card
it is like so...
HP.....N20......FUEL.....PSI
25......24.......18........38
....................16.......50
50......33........25.......38
....................22.......50
75......42........28.......38
....................22.......50
100.....55.......31.......38
....................29.......50
theres an exact copy of my calibration card...u guys tell me what u think
for a 100 shot i had a 55 and 31 jet in and my performance guy said i should have had a 55 and 29 according to my calibration card
Last edited by Robert56; Nov 24, 2005 at 12:49 PM.
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Originally Posted by Macon
Don't take this wrong and some smart people here may help you ...but call an expert before you really f something up.
Here is the link I got jets for:
Colonel's Tech Files
and a calculator:
Nitrous Jet Calculator
Robert
Originally Posted by vortec350
Every nitrous calculator I have seen and used says that a .052 nitrous jet is a 100hp at the wheels and a .050 jet is a 95 shot!
Macon and vortec350, have I givin you bad advice or data? did someone's motor blow on my input?
Robert
Originally Posted by Robert56
Carefull on the sizing. It is pressure based. I used the 950psi pressure and in fact .047 and .025 are the correct jet size. Conservative yes, but not knowing the brand of kit this is the safest way to do it.
Macon and vortec350, have I givin you bad advice or data? did someone's motor blow on my input?
Robert
Macon and vortec350, have I givin you bad advice or data? did someone's motor blow on my input?
Robert
When the original post is apparently making no sense to me I get worried for the owner. My fear is based on past experiences of people who have done some really poor installations. They launched intakes because they thought they knew what was going on. As far as I know you have never misled anyone.
I SHOULD have posted...listen to Robert56 and speak with a vendor.
Last edited by Macon; Nov 25, 2005 at 04:41 PM.
