One thing led to another. Build thread. - Page 70 - Competition Diesel.Com

*Chris Tobin* · 05-08-2017, 09:29 AM

Looking great JP!!! I hope to see it run in person someday!!!

jlibert · 05-08-2017, 09:40 AM

Quote:

Originally Posted by Chris Tobin

Looking great JP!!! I hope to see it run in person someday!!!

Thank you.

joefarmer · 05-08-2017, 11:29 AM

Quote:

Originally Posted by jlibert

No weight for the truck yet. Any guesses?

Congrats on the pass!! My last guess for weight was so far off I'm scared this time around. Assuming you put down 60-65% of the 1500us horsepower to the track, I'll do 3950lb.

jlibert · 05-08-2017, 12:07 PM

Quote:

Originally Posted by joefarmer

Congrats on the pass!! My last guess for weight was so far off I'm scared this time around. Assuming you put down 60-65% of the 1500us horsepower to the track, I'll do 3950lb.

Thank you.

jlibert · 05-08-2017, 12:09 PM

Quote:

Originally Posted by jasonc

What's the max boost your seeing, (s488?), also in the pic I saw it looked like a
T6 housing? If you don't want to say understood. Congrats on the 8sec pass, yall are making it look easy.

Boost (green) vs drive (red)

TheHammer · 05-08-2017, 01:03 PM

nice pass! cant wait to see how fast this thing goes.. as for weight im guessing 4250ish. keep up the good work.

jasonc · 05-08-2017, 07:33 PM

Quote:

Originally Posted by jlibert

Spun, got out of the groove, spinning went to hopping, but I stayed in it and we got a decent number. Single turbo, fuel only, 1500us. The weather was good today, so that was a plus. Cory is already working on solutions to keep the chassis working as we add power.

How does it steer or feel with the manual rack after that pass?

jlibert · 05-08-2017, 08:07 PM

Quote:

Originally Posted by jasonc

How does it steer or feel with the manual rack after that pass?

It never felt out of control. It responded well to steering input, but you arent going to steer it with one hand. When it hooks, it takes very little input. But anything with 1000+ hp that is spinning that far out is going to be a handful.

QMFB · 05-08-2017, 08:55 PM

Quote:

Originally Posted by jlibert

Boost (green) vs drive (red)

That looks like a very efficient boost to DP ratio... Dang near neutral.

RPM Motorsports · 05-09-2017, 01:36 AM

Load it up, Vegas on the 19/20th

jlibert · 05-09-2017, 02:00 AM

Quote:

Originally Posted by RPM Motorsports

Load it up, Vegas on the 19/20th

Man, I don't think I'm ready for a real race yet. Still have one pass left for my license. I'm still waiting on my (second) engine diaper too. I'm going to stick around here for the Eagle Field Runway Drags.

jlibert · 05-30-2017, 09:16 AM

1st pass I loaded a tune that was limited to 4500 rpm. My shifter was set to shift at 4700 rpm so it never shifted out of 1st. Les was not home, no way to get another tune until later.

second pass we backed down shift points from 4700 to 4200 and ran again just to make some passes with the rpm limited tune. Went 5.55@ 125 8.78 at 148 out of rpm on the top end. Had a pretty good bounce at lockup that we need to work on. 1.28 60'

3rd pass we softened up the compression 4 clicks and tightened the extension 2 clicks and turned on 1 stage of nitrous (80 jet) at 1.3 seconds with a 1 second ramp from 30% to 100%. The bounce got better with this adjustment, but the converter was acting weird like it was a low stall converter. It locked up late and the lockup and 2nd gear shift happened at the same time and drug to motor down to 2000 rpm. Our converter unlock parameter was set at 2500 so it unlocked and re locked again. Half pass. 1.29 60'

Last pass loaded a new tune with more rpm that Les emailed us. went 4 clicks looser again on compression, added second stage (70 jet) at 2.3 seconds. Converter still acting tight. Stuck hard, but drove right. Wouldnt shift into 3rd for some reason. So nitrous only came on for 3/10 of a second before it was over our max rpm setting for nitrous. Let off before 1/8 mi. 1.29 60'. Here's a video of that pass.

Pass 4 sonoma. - YouTube

We're putting a new valve body in on wednesday and going back to the track wednesday night to see what we can figure out.

97rada · 05-30-2017, 11:53 AM

Are you controlling the nitrous progressive through the race pak

jlibert · 05-30-2017, 01:44 PM

Quote:

Originally Posted by 97rada

Are you controlling the nitrous progressive through the race pak

Partially, yes. The ramp and timing is controlled by the NOS Launcher.

SmokeShow · 05-30-2017, 09:07 PM

Still so awesome.

Red Sleeper · 05-31-2017, 06:42 AM

The launch is picture perfect!

jlibert · 06-04-2017, 03:07 AM

We went back to the track after swapping valve bodies and coming up with a new plan for commanding shifts. We played with suspension a bit and cory made 3 of his licensing passes in my truck. It was a fun night. Mostly street cars, and a slick track.

HALESTORM55 · 06-04-2017, 11:46 AM

Going to have to run screws

Sent from my SM-G900R4 using Tapatalk

jlibert · 06-04-2017, 01:55 PM

Quote:

Originally Posted by HALESTORM55

Going to have to run screws

Sent from my SM-G900R4 using Tapatalk

Mickey Thompson makes it very clear that you should never run screws with their radial tires. You can either glue the tire to the wheel, or run beadlocks. I'm not worried about 1/4" of movement after 3 runs, but I might glue them at some point.

HALESTORM55 · 06-04-2017, 01:55 PM

I forgot you are on radials

Sent from my SM-G900R4 using Tapatalk

05-08-2017, 09:29 AM	#1381
Chris Tobin Name: Chris Tobin Title: Too Much Time Status: Not Here Join Date: Jun 2008 Location: Dayton, TN Member`s Gallery Posts: 2,662	Looking great JP!!! I hope to see it run in person someday!!! __________________ Chris Tobin Editor--Ultimate Diesel Builder's Guide Freelance Editor and Photographer Working with DIESEL WORLD, DIRT SPORTS, MUSCLE CAR POWER & STREET TRUCKS magazines tobinemail@aol.com I might be able to help get you in a mag. Custom poster size photos available. PM or email for info.

05-09-2017, 01:36 AM	#1390
RPM Motorsports Name: RPM Motorsports Title: Just another Duramax! Status: Not Here Join Date: Mar 2008 Location: Los Banos,Ca Member`s Gallery Posts: 493	Load it up, Vegas on the 19/20th __________________ (Russ) 17 L5P CC/SB High Country 4x4 73 Nova RC/NB Dmax, 3460lbs. 70.5 Camaro EC/NB Dmax Tube Chassis

05-30-2017, 09:16 AM	#1392
jlibert Name: jlibert Title: Too Much Time Status: Not Here Join Date: Jun 2007 Location: CA Member`s Gallery Posts: 3,454	1st pass I loaded a tune that was limited to 4500 rpm. My shifter was set to shift at 4700 rpm so it never shifted out of 1st. Les was not home, no way to get another tune until later. second pass we backed down shift points from 4700 to 4200 and ran again just to make some passes with the rpm limited tune. Went 5.55@ 125 8.78 at 148 out of rpm on the top end. Had a pretty good bounce at lockup that we need to work on. 1.28 60' 3rd pass we softened up the compression 4 clicks and tightened the extension 2 clicks and turned on 1 stage of nitrous (80 jet) at 1.3 seconds with a 1 second ramp from 30% to 100%. The bounce got better with this adjustment, but the converter was acting weird like it was a low stall converter. It locked up late and the lockup and 2nd gear shift happened at the same time and drug to motor down to 2000 rpm. Our converter unlock parameter was set at 2500 so it unlocked and re locked again. Half pass. 1.29 60' Last pass loaded a new tune with more rpm that Les emailed us. went 4 clicks looser again on compression, added second stage (70 jet) at 2.3 seconds. Converter still acting tight. Stuck hard, but drove right. Wouldnt shift into 3rd for some reason. So nitrous only came on for 3/10 of a second before it was over our max rpm setting for nitrous. Let off before 1/8 mi. 1.29 60'. Here's a video of that pass. Pass 4 sonoma. - YouTube We're putting a new valve body in on wednesday and going back to the track wednesday night to see what we can figure out. __________________ J.P. Libert https://instagram.com/jplibert/ Last edited by jlibert; 05-30-2017 at 09:20 AM.

05-30-2017, 11:53 AM	#1393
97rada Name: 97rada Title: Too Much Time Status: Not Here Join Date: Feb 2008 Member`s Gallery Posts: 5,410	Are you controlling the nitrous progressive through the race pak __________________ Austin tow truck- 14-3500 with tuning toy truck -94 rclb auto- 5.2x with a lot left. Shooting for 4s Any intelligent fool can make things bigger and more complex...it takes a touch of genius- and alot of courage to move in the opposite direction.

05-30-2017, 09:07 PM	#1395
SmokeShow Name: SmokeShow Title: Too Much Time Status: Not Here Join Date: Apr 2006 Member`s Gallery Posts: 4,715	Still so awesome. __________________ Mitch IG: @_mitch_ratliff_ '14 Ford F150 FX4 SuperCrew, w/ 3.5L EcoBoost, bone stock 83 GMC K30 CC SB 4WD awaiting D/A chassis swap

05-08-2017, 01:03 PM	#1386
TheHammer Name: TheHammer Title: broke Status: Not Here Join Date: May 2012 Location: juneau wi Member`s Gallery Posts: 738	nice pass! cant wait to see how fast this thing goes.. as for weight im guessing 4250ish. keep up the good work.

05-31-2017, 06:42 AM	#1396
Red Sleeper Name: Red Sleeper Title: Too Much Time Status: Not Here Join Date: Aug 2009 Location: Lone Star State Member`s Gallery Posts: 4,595	The launch is picture perfect! __________________ Nick J '14 Silverado LTZ 5.3 4wd '05 Cummins QCSB 4wd 48re '91 Cummins w350 5spd

06-04-2017, 03:07 AM	#1397
jlibert Name: jlibert Title: Too Much Time Status: Not Here Join Date: Jun 2007 Location: CA Member`s Gallery Posts: 3,454	We went back to the track after swapping valve bodies and coming up with a new plan for commanding shifts. We played with suspension a bit and cory made 3 of his licensing passes in my truck. It was a fun night. Mostly street cars, and a slick track. __________________ J.P. Libert https://instagram.com/jplibert/

06-04-2017, 11:46 AM	#1398
HALESTORM55 Name: HALESTORM55 Title: SLOWPOKE Status: Not Here Join Date: Oct 2015 Location: Skiatook, OK Member`s Gallery Posts: 56	Going to have to run screws Sent from my SM-G900R4 using Tapatalk __________________ 05 F250 ECSB FX4 LEVELLED ON 37'S SLOW

06-04-2017, 01:55 PM	#1400
HALESTORM55 Name: HALESTORM55 Title: SLOWPOKE Status: Not Here Join Date: Oct 2015 Location: Skiatook, OK Member`s Gallery Posts: 56	I forgot you are on radials Sent from my SM-G900R4 using Tapatalk __________________ 05 F250 ECSB FX4 LEVELLED ON 37'S SLOW