BBF nitrous??s HELP.

Page 1 of 2 1, 2  Next

View previous topic View next topic Go down

BBF nitrous??s HELP.

Post  Jeremiah on April 25th 2010, 6:53 pm

I have a 466 BBF with ported to the max procomp aluminum heads and all the good stuff in them, Comp Cam 306-306
262-262 @.050
Valve lift 640-640 1.7 Rocker arms. SpeedPro dome pistons, Hbeam rods BIG tube headers, 1150 Dom carb, 4000 or so stall, C4, in a fox body mustang coupe.

Took the car out with a little 150 shot and on a real bad pass on foot brake went a 10.40. Ran out of nitrous so went home. I put a NOS double cross bar big plate on the car and took it back out and everything working well it only went a 10.20 at at 130mph. on a 250 shot..??? I reset the timing etc. What are you guys setting your fuel pressures and timing on motor and on spray at? Im still learning as I go. What do i need to change/do to get this thing dialed in..?? Thanks guys!!
11.20 on motor, 3300 lbs with me in it 114 fuel 6lbs on nitrous side and 5.5 on motor side.


Last edited by Jeremiah on April 25th 2010, 8:16 pm; edited 1 time in total

Jeremiah

Posts: 157
Join date: 2010-04-25
Age: 32
Location: texas

View user profile

Back to top Go down

Re: BBF nitrous??s HELP.

Post  Northwest outlaw on April 25th 2010, 6:58 pm

Welcome to the site your going to get hammered for the heads. There are a lot of good no2 guy on the site they will chime in soon.

Northwest outlaw

Posts: 962
Join date: 2009-06-27
Age: 38
Location: Pinehurst Idaho

View user profile

Back to top Go down

Re: BBF nitrous??s HELP.

Post  Jeremiah on April 25th 2010, 7:04 pm

I know I am.. But it should not be that way. Im doing what I can with what I got.. Im willing to listen and learn.. Thanks

Jeremiah

Posts: 157
Join date: 2010-04-25
Age: 32
Location: texas

View user profile

Back to top Go down

Re: BBF nitrous??s HELP.

Post  richter69 on April 25th 2010, 7:22 pm

Looks like it runs good for what it is with that cam and heads. I dont think a nos tune will make up for it.....the heads being the biggest cork.

richter69

Posts: 12950
Join date: 2008-12-02
Age: 43
Location: In the winners circle

View user profile

Back to top Go down

Re: BBF nitrous??s HELP.

Post  bruno on April 25th 2010, 7:28 pm

thxs for cking us out Jeremiah .... we are here to help you out and lets see what we can do with what you got Wink


what rear end gear are you running ? and tire size ?

so when you run it n/a what is your timing set at ?

what jets are you using in the plate ?

_________________
coming soon x275 build .........
thanks to all my sponsors :

www.OakleyMotorsports.com
www.Induction-Solutions.com
www.bfevansraceparts.com
www.ultimateconverter.com
www.keithfulpmotorsports.com

bruno
Moderator
Moderator

Posts: 9664
Join date: 2008-12-02
Age: 42
Location: MILLBROOK , AL.

View user profile http://WWW.CKRME.COM

Back to top Go down

Re: BBF nitrous??s HELP.

Post  bruno on April 25th 2010, 7:37 pm

also have you looked at the plugs after a run ? ... they will tell you alot about your tune ..

and if you get a chance on Monday give Steve @ I-S a call he wil help you out with a tune for you engine program .... you will be amazed Wink

here is his # 815-341-8853


later
Nick

_________________
coming soon x275 build .........
thanks to all my sponsors :

www.OakleyMotorsports.com
www.Induction-Solutions.com
www.bfevansraceparts.com
www.ultimateconverter.com
www.keithfulpmotorsports.com

bruno
Moderator
Moderator

Posts: 9664
Join date: 2008-12-02
Age: 42
Location: MILLBROOK , AL.

View user profile http://WWW.CKRME.COM

Back to top Go down

Re: BBF nitrous??s HELP.

Post  BOSS 429 on April 25th 2010, 7:44 pm

what comp ratio? what rpm leaving? stall?

BOSS 429

Posts: 1801
Join date: 2009-08-10

View user profile

Back to top Go down

Re: BBF nitrous??s HELP.

Post  BOSS 429 on April 25th 2010, 7:46 pm

Jeremiah wrote:I have a 466 BBF with ported to the max procomp aluminum heads and all the good stuff in them, Comp Cam 306-306
262-262 @.050
Valve lift 640-640 1.7 Rocker arms. SpeedPro dome pistons, Hbeam rods BIG tube headers, 1150 Dom carb, 4000 or so stall, C4, in a fox body mustang coupe.

Took the car out with a little 150 shot and on a real bad pass on foot brake went a 10.40. Ran out of nitrous so went home. I put a NOS dubble cross bar big plate on the car and took it back out and everything working well it only went a 10.20 at at 130mph. on a 250 shot..??? I reset the timing etc. What are you guys setting your fuel pressures and timing on motor and on spray at? Im still learning as I go. What do i need to change/do to get this thing dialed in..?? Thanks guys!!
11.20 on motor, 3300 lbs with me in it 114 fuel 6lbs on nitrous side and 5.5 on motor side.


its running out of fuel

BOSS 429

Posts: 1801
Join date: 2009-08-10

View user profile

Back to top Go down

Re: BBF nitrous??s HELP.

Post  Jeremiah on April 25th 2010, 8:13 pm

Leaving at about 3000 or so... What makes you think im running out of fuel? Its not falling on its face or anything... 411 with 28/10 tire going threw thw traps at around 6700 6800..

Jeremiah

Posts: 157
Join date: 2010-04-25
Age: 32
Location: texas

View user profile

Back to top Go down

Re: BBF nitrous??s HELP.

Post  Jeremiah on April 25th 2010, 8:15 pm

The plate is jetted 44 on the nitrous and 45 on the fuel double-cross bar plate...

Jeremiah

Posts: 157
Join date: 2010-04-25
Age: 32
Location: texas

View user profile

Back to top Go down

Re: BBF nitrous??s HELP.

Post  BOSS 429 on April 25th 2010, 8:57 pm

BOSS 429 wrote:
Jeremiah wrote:I have a 466 BBF with ported to the max procomp aluminum heads and all the good stuff in them, Comp Cam 306-306
262-262 @.050
Valve lift 640-640 1.7 Rocker arms. SpeedPro dome pistons, Hbeam rods BIG tube headers, 1150 Dom carb, 4000 or so stall, C4, in a fox body mustang coupe.

Took the car out with a little 150 shot and on a real bad pass on foot brake went a 10.40. Ran out of nitrous so went home. I put a NOS dubble cross bar big plate on the car and took it back out and everything working well it only went a 10.20 at at 130mph. on a 250 shot..??? I reset the timing etc. What are you guys setting your fuel pressures and timing on motor and on spray at? Im still learning as I go. What do i need to change/do to get this thing dialed in..?? Thanks guys!!
11.20 on motor, 3300 lbs with me in it 114 fuel 6lbs on nitrous side and 5.5 on motor side.


its running out of fuel



the fuel presser you run isnt even enought to seat the float seats, 6 on nos too little

BOSS 429

Posts: 1801
Join date: 2009-08-10

View user profile

Back to top Go down

Re: BBF nitrous??s HELP.

Post  bruno on April 25th 2010, 8:59 pm

Jeremiah wrote:The plate is jetted 44 on the nitrous and 45 on the fuel double-cross bar plate...

Jeremiah,

i will let Steve chime in on this but i believe that jetting on that double crossbar is incorrect ...way too rich ...

_________________
coming soon x275 build .........
thanks to all my sponsors :

www.OakleyMotorsports.com
www.Induction-Solutions.com
www.bfevansraceparts.com
www.ultimateconverter.com
www.keithfulpmotorsports.com

bruno
Moderator
Moderator

Posts: 9664
Join date: 2008-12-02
Age: 42
Location: MILLBROOK , AL.

View user profile http://WWW.CKRME.COM

Back to top Go down

Re: BBF nitrous??s HELP.

Post  bruno on April 25th 2010, 9:15 pm

i dont want to start to give out tunes , because im no were the expert on this stuff but im thinking 65/61 @ 6lbs and the bottle pressure @ 950 .... for the 250 shot ....... and Steve will also help with you timing #s also..... what noids do you have with the systems ?

and what plugs are you using ?

p.s. also all the old nos tunes are incorrect and they have been corrected recently most of them were way to rich !!

_________________
coming soon x275 build .........
thanks to all my sponsors :

www.OakleyMotorsports.com
www.Induction-Solutions.com
www.bfevansraceparts.com
www.ultimateconverter.com
www.keithfulpmotorsports.com

bruno
Moderator
Moderator

Posts: 9664
Join date: 2008-12-02
Age: 42
Location: MILLBROOK , AL.

View user profile http://WWW.CKRME.COM

Back to top Go down

Re: BBF nitrous??s HELP.

Post  Jeremiah on April 25th 2010, 9:23 pm

That might be the prob.. I have been going by the book that came with the kit.. It has the big noids.. help me out... Where can I find some better jetting #s?? 65/61 might be a 250 shot on a single bar plate.. But its a little different on the double cross bar plate..

Jeremiah

Posts: 157
Join date: 2010-04-25
Age: 32
Location: texas

View user profile

Back to top Go down

Re: BBF nitrous??s HELP.

Post  Jeremiah on April 25th 2010, 11:29 pm

Think I got it figured out.. we looked up nitrous jetting for the dubble cross bar and I guess it HAS been updated.... With 44-45 jetting I was only spraying maybe a 150 shot again... For a 225 shot its calling for 51 nitrous and 61 fuel... I put the 44s and 45s in by the book I got with the kit. SO I dont know what the prob is there..??? So everything I am doing so far is correct for me to be in the 9s. Just have to get the right jets in it.. LOL! Very Happy

Jeremiah

Posts: 157
Join date: 2010-04-25
Age: 32
Location: texas

View user profile

Back to top Go down

Page 1 of 2 1, 2  Next

View previous topic View next topic Back to top


Permissions in this forum:
You cannot reply to topics in this forum