ubly results - Moparts Forums

Register Log In Moparts Forums Unlawfl's Race & Engine Tech ubly results

Print Thread

Page 1 of 3

1

2

3

ubly results #745351 07/11/10 10:24 AM 07/11/10 10:24 AM
Joined: Jan 2007 Posts: 8,042 Mt Morris Michigan mopar dave OP master
mopar dave OP master Joined: Jan 2007 Posts: 8,042 Mt Morris Michigan	off the trailer car went 2 tenths and 2 mph slower. changed carb spacer to a 1" open from a 4 hole tappered and picked up .5 mph in 1/4 but lost .5 in the 1/8 with same et. changed jetting to 87/96 from 86/94 ran almost identicle et/mph. carb seems insensitive to jet changes,so i put 90/98 jets in and lost 2 mph and one tenth,but put some color on plug,grey. plugs have been white up to this point. ran into EDDIEB there,great guy. he suggested smaller high speed air bleeds,i agree. fuel pressure thru the traps was 7psi. any ideas? http://www.youtube.com/watch?v=aIxaesJ190U http://youtu.be/lCZAaN7fFLg

Re: ubly results [Re: mopar dave] #745352 07/11/10 10:36 AM 07/11/10 10:36 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: off the trailer car went 2 tenths and 2 mph slower. changed carb spacer to a 1" open from a 4 hole tappered and picked up .5 mph in 1/4 but lost .5 in the 1/8 with same et. changed jetting to 87/96 from 86/94 ran almost identicle et/mph. carb seems insensitive to jet changes,so i put 90/98 jets in and lost 2 mph and one tenth,but put some color on plug,grey. plugs have been white up to this point. ran into EDDIEB there,great guy. he suggested smaller high speed air bleeds,i agree. fuel pressure thru the traps was 7psi. any ideas? Well you know you can slow the car down by adding jet so you have enough supply... jet back down to find the fastest MPH... MPH is the hp... ET is chassis once you find the fastest MPH then start doing the spacer chances and then you need to start all over again to find the fastest MPH... you need to optimize each combo... just to change the spacer and say that didnt work without optimizing wouldnt be correct... JMO

Re: ubly results [Re: mopar dave] #745353 07/11/10 10:37 AM 07/11/10 10:37 AM
Joined: Aug 2008 Posts: 941 Texas, USA ChrgrCuda super stock
ChrgrCuda super stock Joined: Aug 2008 Posts: 941 Texas, USA	I lost 5 mph and 3 tenths last time out, 68 notch, small block stroker. I square jetted and removed PV, but didn't jet up. Just a thought. 68 Cuda Notchback [Email]10.86@120[/Email] 69 Charger R/T 440/505 2009 Challenger SRT8

Re: ubly results [Re: ChrgrCuda] #745354 07/11/10 01:23 PM 07/11/10 01:23 PM
Joined: Jan 2009 Posts: 1,044 Victoria, Australia Ian super stock
Ian super stock Joined: Jan 2009 Posts: 1,044 Victoria, Australia	dave did you contact the people help you out with the changes you made , what did they say ? did you change converter ? what was your 8 th mile times and 60 ft 1.37 60 ft [email]6.0@113[/email] [email]9.57@141[/email] 408 glide 3550lbs new video http://www.youtube.com/watch?feature=player_embedded&v=Xvq3ZObywQE

Re: ubly results [Re: Ian] #745355 07/11/10 03:41 PM 07/11/10 03:41 PM
Joined: Jan 2007 Posts: 8,042 Mt Morris Michigan mopar dave OP master
mopar dave OP master Joined: Jan 2007 Posts: 8,042 Mt Morris Michigan	the spacer change alone was worth .5 mph gain without any jetting. i added jet after that and lost just a smidgen of mph til i went up 4 sizes front and back and lost about 2 mph,but the plug was still light grey in color after getting back to the pit. Ian, the best 1/8 was a 6.88@99.50 mph. why would the plugs be so light in color with so much jet in a 1000hp (90/98)? http://www.youtube.com/watch?v=aIxaesJ190U http://youtu.be/lCZAaN7fFLg

Re: ubly results [Re: mopar dave] #745356 07/12/10 08:20 AM 07/12/10 08:20 AM
Joined: Jan 2003 Posts: 4,058 Shelby Twp. Mi HardcoreB master
HardcoreB master Joined: Jan 2003 Posts: 4,058 Shelby Twp. Mi	Thanks for reporting back from your visit Dave...When you going out next? Maybe we'll all coordinate another track day. Your mph shows the potential for 2-3 tenths E.T. But if your 1/8 MPH is only 99/100 MPH then your incrementals are all over the place and studying them will lead tobetter times.

Re: ubly results [Re: HardcoreB] #745357 07/12/10 09:16 AM 07/12/10 09:16 AM
Joined: Sep 2009 Posts: 2,325 Clinton Twp... north of Deetro... L Labratt Good Ol Randy B!
Labratt Good Ol Randy B! L Joined: Sep 2009 Posts: 2,325 Clinton Twp... north of Deetro...	I went just the opposite of Dave on the spacers! Went from a 1" open to a 1" 4-Hole. I'm thinking it'll make more low-end torque,to get my heavy car off the line quicker! Any thoughts out there? Thanks! RandyB BTW... Thanks for posting your results Dave! Like Sean said,we'll ALL have to get together before the season's over for some FUN!!! 6081125-DSC00203(Small).JPG (42 downloads)

Re: ubly results [Re: Labratt] #745358 07/12/10 09:43 AM 07/12/10 09:43 AM
Joined: Jan 2007 Posts: 8,042 Mt Morris Michigan mopar dave OP master
mopar dave OP master Joined: Jan 2007 Posts: 8,042 Mt Morris Michigan	it will be about a month before i can go out again. i have a friend that just put together a 440 small block with ported chapman w7's and he will be calling me out to mid michigan after he gets track ready. i need to save my tires for this event. i'm thinking that maybe the lean issue could be the smaller pv i put in there (3.5) it had a 6.5. maybe its closing up at high rpm and causing the lean issue or maybe the HAB's need tuning at this point. anyway,i think it may be better at this point to go back to A&A's chassis dyno to figure this and then back to the track for final jetting. this would save my tires.i feel like i'm chasing my tail at this point. http://www.youtube.com/watch?v=aIxaesJ190U http://youtu.be/lCZAaN7fFLg

Re: ubly results [Re: mopar dave] #745359 07/12/10 11:46 AM 07/12/10 11:46 AM
Joined: Jan 2007 Posts: 8,042 Mt Morris Michigan mopar dave OP master
mopar dave OP master Joined: Jan 2007 Posts: 8,042 Mt Morris Michigan	pics of my plugs. 6081326-400block011.jpg (72 downloads) http://www.youtube.com/watch?v=aIxaesJ190U http://youtu.be/lCZAaN7fFLg

Re: ubly results [Re: mopar dave] #745360 07/12/10 11:48 AM 07/12/10 11:48 AM
Joined: Jan 2007 Posts: 8,042 Mt Morris Michigan mopar dave OP master
mopar dave OP master Joined: Jan 2007 Posts: 8,042 Mt Morris Michigan	another 6081329-400block016.jpg (63 downloads) http://www.youtube.com/watch?v=aIxaesJ190U http://youtu.be/lCZAaN7fFLg

Re: ubly results [Re: mopar dave] #745361 07/12/10 11:51 AM 07/12/10 11:51 AM
Joined: Jan 2007 Posts: 8,042 Mt Morris Michigan mopar dave OP master
mopar dave OP master Joined: Jan 2007 Posts: 8,042 Mt Morris Michigan	another pic 6081333-400block017.jpg (52 downloads) http://www.youtube.com/watch?v=aIxaesJ190U http://youtu.be/lCZAaN7fFLg

Re: ubly results [Re: mopar dave] #745362 07/12/10 11:52 AM 07/12/10 11:52 AM
Joined: Jan 2003 Posts: 25,951 United Socialist States of Ame... T tboomer Too Many Posts
tboomer Too Many Posts T Joined: Jan 2003 Posts: 25,951 United Socialist States of Ame...	Dave....Sure wish mine looked that good!! Need your rear end checked out? Contact Grizzly!!

Re: ubly results [Re: mopar dave] #745363 07/12/10 12:09 PM 07/12/10 12:09 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: the spacer change alone was worth .5 mph gain without any jetting. i added jet after that and lost just a smidgen of mph til i went up 4 sizes front and back and lost about 2 mph,but the plug was still light grey in color after getting back to the pit. Ian, the best 1/8 was a [Email]6.88@99.50[/Email] mph. why would the plugs be so light in color with so much jet in a 1000hp (90/98)? Looking at the plugs you arent lean(hard to see it all and I understand you drove back to the pit... jet it for MPH EDIT I see its 1/8 mile times... did they run any 1/4 mile there any more Last edited by MR_P_BODY; 07/12/10 12:10 PM.

Re: ubly results [Re: MR_P_BODY] #745364 07/12/10 12:51 PM 07/12/10 12:51 PM
Joined: Jan 2007 Posts: 8,042 Mt Morris Michigan mopar dave OP master
mopar dave OP master Joined: Jan 2007 Posts: 8,042 Mt Morris Michigan	yes,we were runnin 1/4 mile tnt and grudge. 1/8 racing is on sunday. http://www.youtube.com/watch?v=aIxaesJ190U http://youtu.be/lCZAaN7fFLg

Re: ubly results [Re: mopar dave] #745365 07/12/10 01:12 PM 07/12/10 01:12 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: yes,we were runnin 1/4 mile tnt and grudge. 1/8 racing is on sunday.

Re: ubly results [Re: MR_P_BODY] #745366 07/12/10 02:25 PM 07/12/10 02:25 PM
Joined: Jan 2007 Posts: 8,042 Mt Morris Michigan mopar dave OP master
mopar dave OP master Joined: Jan 2007 Posts: 8,042 Mt Morris Michigan	i was jetting for mph,but it was'nt making much differnce in mph no matter how much jet i put in or took away. this carb was like this last year too with alittle different program,but i did have color on the plugs then. do ya think this might be an indication of the 408 wanting a bigger carb? this is a 1000hp already. http://www.youtube.com/watch?v=aIxaesJ190U http://youtu.be/lCZAaN7fFLg

Re: ubly results [Re: mopar dave] #745367 07/12/10 02:58 PM 07/12/10 02:58 PM
Joined: Jan 2003 Posts: 4,058 Shelby Twp. Mi HardcoreB master
HardcoreB master Joined: Jan 2003 Posts: 4,058 Shelby Twp. Mi	I believe you have a hood scoop problem. Run a string from the roof to the front of the car...the scoop opening should eclipse this 'plane' for 'clean' air. You could chase your tail troubleshooting suspect parts that change your results and lead you in the wrong direction. D.A.M.H.I.K. LOL

Re: ubly results [Re: HardcoreB] #745368 07/12/10 03:13 PM 07/12/10 03:13 PM
Joined: Jan 2007 Posts: 8,042 Mt Morris Michigan mopar dave OP master
mopar dave OP master Joined: Jan 2007 Posts: 8,042 Mt Morris Michigan	do you think the scoop needs to be sealed to the carb? http://www.youtube.com/watch?v=aIxaesJ190U http://youtu.be/lCZAaN7fFLg

Re: ubly results [Re: mopar dave] #745369 07/12/10 03:34 PM 07/12/10 03:34 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: do you think the scoop needs to be sealed to the carb? That would help

Re: ubly results [Re: MR_P_BODY] #745370 07/12/10 04:57 PM 07/12/10 04:57 PM
Joined: Jan 2010 Posts: 184 Bad Axe,MI E EDDIEB member
EDDIEB member E Joined: Jan 2010 Posts: 184 Bad Axe,MI	Hey Dave did you call Patrick? EDDIE B

Page 1 of 3

1

2

3

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1