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Drag Racing Where ALL Racers are Welcome- From ET Bracket, all the way to ProStreet and Top Diesel! |
05-05-2017, 01:17 PM
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#21
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Name: SPEEDSHIFT
Title: Too Much Time
Status: Not Here
Join Date: Jan 2007
Location: San Antonio, TX
Member`s Gallery
Posts: 5,978
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Quote:
Originally Posted by sootie
any skid plates you can do away with? trailer hitch? spare tire?
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Yeah, there are still several things I can do to remove weight easily. It still has the receiver hitch and a home made goose neck hitch that is made out of 1" plate. I plan on using a roll pan as well and maybe later on once its faster run a hood stack.
I already removed the spare tire, pass battery and tray, subs, amp, leafs, tailgate, rear seat, and a few other small things.
__________________
@bodie_armstrong
2003 2500 4x4 auto FOR SALE
2005 2500 4x4 auto Drag Truck
2013 3500 4x4 Aisin Dually Tow Rig
Tenacity Tuning, Longs Machine Shop, BD Diesel Performance
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05-06-2017, 12:30 AM
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#22
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Name: PhillipF
Title: Diesel Enthusiast
Status: Not Here
Join Date: Apr 2015
Member`s Gallery
Posts: 120
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SA raceway is hard to 60ft well at in general, at least on TNT nights. I go out there from time to time testing and generally cut at least a .10 slower 60ft then I normally do at other events. My best 60ft there has been a 1.58 while my best else where has been a 1.39 so I take my times from SA with a grain of salt, I just look at mph to make sure the power is there.
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05-06-2017, 06:34 AM
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#23
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Name: SPEEDSHIFT
Title: Too Much Time
Status: Not Here
Join Date: Jan 2007
Location: San Antonio, TX
Member`s Gallery
Posts: 5,978
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Quote:
Originally Posted by PhillipF
SA raceway is hard to 60ft well at in general, at least on TNT nights. I go out there from time to time testing and generally cut at least a .10 slower 60ft then I normally do at other events. My best 60ft there has been a 1.58 while my best else where has been a 1.39 so I take my times from SA with a grain of salt, I just look at mph to make sure the power is there.
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Yessir, I learned that last night! Ran a 11.44 at 118 with a 1.67 60ft on my first pass when the track was fresh. It was all downhill from there. 11.61 and 11.66s the rest of the night with anything from 15-22lb launches and 1.77 60fts.
__________________
@bodie_armstrong
2003 2500 4x4 auto FOR SALE
2005 2500 4x4 auto Drag Truck
2013 3500 4x4 Aisin Dually Tow Rig
Tenacity Tuning, Longs Machine Shop, BD Diesel Performance
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07-25-2017, 12:19 PM
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#24
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Name: SPEEDSHIFT
Title: Too Much Time
Status: Not Here
Join Date: Jan 2007
Location: San Antonio, TX
Member`s Gallery
Posts: 5,978
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Guys I am still fighting my 60ft times with this truck. I went out this weekend and couldnt get any better than a 1.80. I really cant say it was the track because a buddy was cutting 1.6xs all night on all terrain tires. It has me looking for a set of drag radials or slicks, but I would rather not spend the money because I know there are guys way faster than me with the same setup.
My setup this weekend:
Stock stall converter
only held 12-15lbs all night
RPM is about 2400 at the launch
35psi front and 25psi rear
Caltracs setup fairly loose
67.7 turbo with 90 housing
The rear tires have a decent amount of tread but are far from new, I also wonder if maybe they are just old hard tires. Maybe the combination on the stock stall and a small, fast lighting turbo is too much power right off the brake.
Any ideas?
__________________
@bodie_armstrong
2003 2500 4x4 auto FOR SALE
2005 2500 4x4 auto Drag Truck
2013 3500 4x4 Aisin Dually Tow Rig
Tenacity Tuning, Longs Machine Shop, BD Diesel Performance
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07-25-2017, 01:48 PM
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#25
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Name: JWhite
Title: Trained monkey
Status: Not Here
Join Date: Aug 2009
Location: F Burg Ohio
Member`s Gallery
Posts: 1,817
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So is it spinning? A video would help
__________________
GMC with a LiLLY
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07-25-2017, 01:59 PM
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#26
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Name: SPEEDSHIFT
Title: Too Much Time
Status: Not Here
Join Date: Jan 2007
Location: San Antonio, TX
Member`s Gallery
Posts: 5,978
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Quote:
Originally Posted by JWhite
So is it spinning? A video would help
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Yes, it spins with anything over 15-18psi depending on the track. I dont have any close up videos, but I will try to post something so yall can get an idea of how it launches.
__________________
@bodie_armstrong
2003 2500 4x4 auto FOR SALE
2005 2500 4x4 auto Drag Truck
2013 3500 4x4 Aisin Dually Tow Rig
Tenacity Tuning, Longs Machine Shop, BD Diesel Performance
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07-25-2017, 02:19 PM
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#27
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Name: SPEEDSHIFT
Title: Too Much Time
Status: Not Here
Join Date: Jan 2007
Location: San Antonio, TX
Member`s Gallery
Posts: 5,978
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__________________
@bodie_armstrong
2003 2500 4x4 auto FOR SALE
2005 2500 4x4 auto Drag Truck
2013 3500 4x4 Aisin Dually Tow Rig
Tenacity Tuning, Longs Machine Shop, BD Diesel Performance
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07-25-2017, 07:41 PM
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#28
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Name: SPEEDSHIFT
Title: Too Much Time
Status: Not Here
Join Date: Jan 2007
Location: San Antonio, TX
Member`s Gallery
Posts: 5,978
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Looking through my data from Friday and it looks like I am holding first gear too long and it is cutting power. Check out the flat spot in my speed. That's either a spin or over reving.
__________________
@bodie_armstrong
2003 2500 4x4 auto FOR SALE
2005 2500 4x4 auto Drag Truck
2013 3500 4x4 Aisin Dually Tow Rig
Tenacity Tuning, Longs Machine Shop, BD Diesel Performance
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07-25-2017, 10:30 PM
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#29
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Name: Big Blue24
Title: Comp Diesel Sponsor
Status: Not Here
Join Date: Jan 2008
Location: Cedar City, UT
Member`s Gallery
Posts: 6,310
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You might do better with a higher stall converter, this will let you leave at lower boost so it doesn't blow off the tires but will allow the engine to rev higher faster to get the power to come in quickly once moving. My theory is if you leave at 10 psi where it sticks the launch, it falls on it's face and comes out too soft. If you leave at 18 psi it comes out hard but leaves the line to violent and spins at the hit.
A go pro mounted under the chassis pointed at the tires will help you see if it's spinning, bouncing, or just dead hooking and not making power early enough. I will say this, in my personal drag racing, each time I've increased the size of the turbos, I had to leave at higher boost to make it light quickly and it required changes to the suspension/tire pressure/bar settings to make it handle the higher boost launch.
__________________
95' 2wd Junker Drag Truck
1502 HP Fuel-Only 12mm P7100 Pump
SXE 472 over GTX55 116mm
OEM 12v Block
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07-25-2017, 10:45 PM
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#30
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Name: Woosley
Title: Barely was has been
Status: Not Here
Join Date: May 2009
Location: Hatersburg
Member`s Gallery
Posts: 1,610
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Are you running a manual Valve body?
__________________
2005 Ram 2500 "Great White Buffalo"
Ginger bred, ginger red, ginger proud
These guys helped ALOT:
Firepunk Diesel
D&J Precision Machine
Exergy Performance
Diesel Performance Converters
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07-26-2017, 06:22 AM
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#31
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Name: SPEEDSHIFT
Title: Too Much Time
Status: Not Here
Join Date: Jan 2007
Location: San Antonio, TX
Member`s Gallery
Posts: 5,978
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Quote:
Originally Posted by Big Blue24
You might do better with a higher stall converter, this will let you leave at lower boost so it doesn't blow off the tires but will allow the engine to rev higher faster to get the power to come in quickly once moving. My theory is if you leave at 10 psi where it sticks the launch, it falls on it's face and comes out too soft. If you leave at 18 psi it comes out hard but leaves the line to violent and spins at the hit.
A go pro mounted under the chassis pointed at the tires will help you see if it's spinning, bouncing, or just dead hooking and not making power early enough. I will say this, in my personal drag racing, each time I've increased the size of the turbos, I had to leave at higher boost to make it light quickly and it required changes to the suspension/tire pressure/bar settings to make it handle the higher boost launch.
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I really feel like a lower stall would help because once you let off the brake and go to WOT it instantly lights and blows the tires off. If it wouldnt build boost quite as fast it would give it time to leave a little softer and hold traction. Either slower spool or tighter stall, I am going to put a larger exhaust housing on it soon, see if that helps.
I will mount a GoPro under the truck before I go next time. I appreciate the help.
__________________
@bodie_armstrong
2003 2500 4x4 auto FOR SALE
2005 2500 4x4 auto Drag Truck
2013 3500 4x4 Aisin Dually Tow Rig
Tenacity Tuning, Longs Machine Shop, BD Diesel Performance
Last edited by SPEEDSHIFT; 07-26-2017 at 06:27 AM.
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07-26-2017, 06:23 AM
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#32
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Name: SPEEDSHIFT
Title: Too Much Time
Status: Not Here
Join Date: Jan 2007
Location: San Antonio, TX
Member`s Gallery
Posts: 5,978
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Quote:
Originally Posted by Woosley
Are you running a manual Valve body?
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Yes, I held 1st too long on this logged pass either because I was sleeping or spinning, looks like it was spinning a little.
__________________
@bodie_armstrong
2003 2500 4x4 auto FOR SALE
2005 2500 4x4 auto Drag Truck
2013 3500 4x4 Aisin Dually Tow Rig
Tenacity Tuning, Longs Machine Shop, BD Diesel Performance
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07-26-2017, 08:10 AM
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#33
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Name: Woosley
Title: Barely was has been
Status: Not Here
Join Date: May 2009
Location: Hatersburg
Member`s Gallery
Posts: 1,610
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Get rid of that stupid brotastic technology, and get an Anteater. One less thing to worry about.
__________________
2005 Ram 2500 "Great White Buffalo"
Ginger bred, ginger red, ginger proud
These guys helped ALOT:
Firepunk Diesel
D&J Precision Machine
Exergy Performance
Diesel Performance Converters
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07-26-2017, 08:25 AM
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#34
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Name: SPEEDSHIFT
Title: Too Much Time
Status: Not Here
Join Date: Jan 2007
Location: San Antonio, TX
Member`s Gallery
Posts: 5,978
|
Quote:
Originally Posted by Woosley
Get rid of that stupid brotastic technology, and get an Anteater. One less thing to worry about.
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LMAO "brotastic technology"
I would love to, but $$$$
__________________
@bodie_armstrong
2003 2500 4x4 auto FOR SALE
2005 2500 4x4 auto Drag Truck
2013 3500 4x4 Aisin Dually Tow Rig
Tenacity Tuning, Longs Machine Shop, BD Diesel Performance
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07-26-2017, 01:58 PM
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#35
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Name: JWhite
Title: Trained monkey
Status: Not Here
Join Date: Aug 2009
Location: F Burg Ohio
Member`s Gallery
Posts: 1,817
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I'd say you just held it too long. Your mph doesn't spike, just flatlines. Do you have the limiter set at 4k?
I'm not a dodge trans guy, so correct me please. But can't you select OD in first gear then just shift twice? That would soften the hit, and you could potentially leave with more boost by loading the engine harder.
__________________
GMC with a LiLLY
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07-27-2017, 06:13 AM
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#36
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Name: SPEEDSHIFT
Title: Too Much Time
Status: Not Here
Join Date: Jan 2007
Location: San Antonio, TX
Member`s Gallery
Posts: 5,978
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Quote:
Originally Posted by JWhite
I'd say you just held it too long. Your mph doesn't spike, just flatlines. Do you have the limiter set at 4k?
I'm not a dodge trans guy, so correct me please. But can't you select OD in first gear then just shift twice? That would soften the hit, and you could potentially leave with more boost by loading the engine harder.
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I have no idea on the OD, that sounds like you're asking for smoked OD clutches to me though.
What about a front locker?
__________________
@bodie_armstrong
2003 2500 4x4 auto FOR SALE
2005 2500 4x4 auto Drag Truck
2013 3500 4x4 Aisin Dually Tow Rig
Tenacity Tuning, Longs Machine Shop, BD Diesel Performance
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08-01-2017, 11:46 PM
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#37
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Name: they all break
Title: Green Behind the Ears
Status: Not Here
Join Date: Oct 2009
Member`s Gallery
Posts: 38
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I would look at changing to adjustable shocks. It also looks like you are lifting the front end to much.
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08-02-2017, 07:21 AM
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#38
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Name: jasonc
Title: Too Much Time
Status: Not Here
Join Date: Nov 2009
Member`s Gallery
Posts: 4,396
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You ought to try setting your caltracs more aggressive, move the bars up one hole. That would plant the rear tires harder and lift the back of the truck more at launch and help keep the front down.
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08-06-2017, 01:44 PM
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#39
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Name: SPEEDSHIFT
Title: Too Much Time
Status: Not Here
Join Date: Jan 2007
Location: San Antonio, TX
Member`s Gallery
Posts: 5,978
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Here's a slow-mo video of the truck launching on the street at 15psi.
4wd boost launch - YouTube
__________________
@bodie_armstrong
2003 2500 4x4 auto FOR SALE
2005 2500 4x4 auto Drag Truck
2013 3500 4x4 Aisin Dually Tow Rig
Tenacity Tuning, Longs Machine Shop, BD Diesel Performance
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08-07-2017, 07:43 PM
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#40
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Name: they all break
Title: Green Behind the Ears
Status: Not Here
Join Date: Oct 2009
Member`s Gallery
Posts: 38
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Front end is coming up to much. I know you want to transfer weight to back but to much and you defeat the purpose of 4x4.
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