View Full Version : the Duramax is right with the top Cummins on the pulling track now
I've haven't been on here in awhile but I though I'd let you guys know that with a few upgrades the Duramax is very competitive with the top single charger Cummins pulling trucks out there. Here's the results from the ATPA pull in Charlestown, IN last weekend. Click on the links from the top 3 for video.
1st - Curt Haisley - Dodge CUMMINS - 289.11' (http://duramaxracing.com/CurtHaisleyCharlestownINATPA8000Prostreet.mpg)
2nd - Micheal Tomac - Chevy DURAMAX - 289.09' (http://duramaxracing.com/TomacDuramax6-04-05CharlestownINATPA8000Prostreet.mpg)
3rd - Tod Cox - Dodge CUMMINS - 287.08' (http://duramaxracing.com/ToddCoxCharlestownINATPA8000Prostreet.mpg)
4th - Craig Severs - Dodge CUMMINS - 286.04'
5th - George Peterson - Dodge CUMMINS - 281.10'
6th - Terry Coppess - Dodge CUMMINS - 282.07'
Jim Brzozowski
06-09-2005, 08:37
YES, that looked good. Congrads. According to my calculator you just missed first place by approz. 1/4".
What are you running the exhaust thru out the top?
Man I just look at your sig and all the stuff you've got on the truck and drool. If only I had more money!! I noticed your absence from TDP for a while. Nothing like coming back with AWSOME news. If you ever come to a pull in Houston or somewhere in Texas let us know. I'll be there to cheer you on.
batts496
06-09-2005, 09:27
Man you carried that sled for a ride! Those two dodges never cleared out and run out of motor. If you could have added one more weight you would have gotten those few inches cause you damn sure didn't run out of motor! You'all running a single charger?
Tough Guy
06-09-2005, 10:19
Whats the story with Brad Hammer or "Fordboy" during the pull in Michigan?
Quote: "This truck beat Tomac, and has all the Chevy boys crying foul."
This is the Thread (http://forums.thedieselstop.com/ubbthreads/showflat.php?Cat=&Board=73upgrades1&Number=2433460&page=1&view=collapsed&sb=5&o=31&fpart=all) that quote came from...
Great video of your pull!!!
Cheers
At a brush pull the next day on a $hit track a ford running drugs beat me by 2 or 3'. I should have jumped up into 2nd high instead of 4th low
[ 06-10-2005, 06:15 AM: Message edited by: Micheal Tomac ]
David Proske
06-10-2005, 00:12
Most noticable thing here is how much more clean burning the Dmax is compared to those dodges. Yeah that smoke looks cool, but is just wasted fuel.
Yes, excessive smoke is a waste but I do need more fuel than what I have right now. I have a set of 40% over nozzles from Kennedy Diesel ready to go in the truck.
rjschoolcraft
06-10-2005, 05:06
As someone else noted, you did not run out of power at the end of the track...the two Dodges did! I think you're not far from being the class of the field.
batts496
06-10-2005, 05:09
Tomac, what did your truck weigh in that class? Also, how far do they let the slad role out before transfering the weight to the plate, looks like it comes on pretty fast down the track. Are you running a stock street legal tire thats been cut, or pulling tires?
7994#
The weight box starts moving up to put weight on the pan as soon as I take off.
I'm running stock/unaltered 285x75x16 BFG AT's on stock PYO rims
batts496
06-10-2005, 06:25
We used to start our weight box waaay back, to the point that when the truck or tractor started off the plate would leave the ground and hover at arount one to two inches for about six to ten feet. Then it would break over center and there was no need to look back cause OLD YELLER was there. This was a Stauffer Bros. three axle 64000# sled, had air bags on front axle to get weight off of the plate for the light weights to get it rolling. Sled was not self propelled, Had to use a 100+HP tractor to pull it back. OLD DAYS back in late 70's and early 80's.
Idle_Chatter
06-10-2005, 07:05
Awesome pull, Michael! You got them Dodge boys losin' sleep now - keep up the great work.
Damn thats right down the road from me. I knew about the pull but had other plans and figured Kent would show up and walk away as always. Our 02' Duramax is still down and rules keep me from pulling my old 70' so I wasn't real worried about going. You should come down to the Lanesville pull this fall. The track is always great, the turnout is huge, Crowder and the Haisley's always come and put a good pull down and it just a huge party.
Jim Brzozowski
06-14-2005, 08:33
Hey Michel, not to change the subject too far from you awsome pull, but just curious how streetable is your truck after the pull. Does it take a lot of work to get it back to street condition or is it fairly easy?
Take the weights off the front, unclamp 4 u-bolts on the leaf springs & remove 2 overload springs, pull two pins and move suspension limiting blocks up and repin, raise front tire pressure, lower rear tire pressure, put tailgate, spare tire, jack, tools ect. back in the truck
BTW, I still drive this truck every day. It has over 106K miles on the odometer.
Jim Brzozowski
06-15-2005, 08:39
A mans dream. A daily driver that can compete and still be fun to drive on the street. Don't get any better than that. After reading thru the specs on the engine on my 02, I deceided based on what I know that this has to be one tough engine design, looks like you've already proved me right.Best of luck in the future to ya.
duning chevy
06-19-2005, 02:44
My question is, if we are supposed to try and keep our trucks under 1300 degrees, how the hel do u keep your turbos alive at the ungodly temps they must be facing in these pulls?
Tough Guy
06-19-2005, 08:02
Its not hot for too long.... :D
If you did that all day, then you probably would want to pack a good pair of walking shoes... ;)
Cheers
DmaxMaverick
06-19-2005, 09:53
Originally posted by duning chevy:
My question is, if we are supposed to try and keep our trucks under 1300 degrees, how the hel do u keep your turbos alive at the ungodly temps they must be facing in these pulls? That is the temp of the gas passing through the turbo, not the temp of the turbo housing. The turbo will soak some of the heat, and are designed to handle it. The Turbo in all (OEM) Duramax engines are engine coolant cooled.
duning chevy
06-19-2005, 22:31
Thats cool, i didnt know they had coolant running thru them, thats good to know...
David Proske
06-19-2005, 23:44
I thought I read that the coolant running through the turbo was just to help warm up the engine and was controlled by a thermostat that closed when the engine warmed up.
I don't worry about EGT's when dragracing or truckpulling. With the ATS turbo EGT's are 200 degrees lower than the stock turbo with the same programming and same injectors.
DmaxMaverick
06-20-2005, 07:45
Originally posted by David Proske:
I thought I read that the coolant running through the turbo was just to help warm up the engine and was controlled by a thermostat that closed when the engine warmed up. This would be BAAAAAAD! The temps seen inside the turbo would vaporize the coolant! The "warm up" may be an added bonus, but not by design. The spool is the coolant jacketed part, so I doubt it would have much effect, if any, on coolant warm up. Having a cooled turbo reduces the "cool down" time required, reducing oil coking and other heat damage. I still idle for a couple minutes after a hard run, but, according to GM/Duramax, it is not necessary due to this design.
More Power
06-20-2005, 17:32
The SAE paper on the LB7 contains a paragraph discussing the coolant flow through the turbo. It is as David suggested, in that coolant flows through a water jacket in the turbo center section to aid in (hasten) engine warmup. A thermostat stops coolant flow through the turbo water jacket once an unspecified temperature has been reached.
The Banks Big Head (http://www.thedieselpage.com/reviews/bighead.htm) turbo wastegate actuator review contains a photo showing one of the coolant lines on the LB7 turbo.
MP
DmaxMaverick
06-21-2005, 11:44
Hmmmmmm....
This contradicts much of the early discussion. I haven't seen the SAE paper. It just doesn't make sense, to me anyway.
Turbo housing temps can easily pass 260
GM has it worded exactly as ALLDATA. On my 3116 when we just ran a single charger it had a water cooled turbine housing that was absolutly nessacary to keep the charger from melting off the manifold. when we went to duals the hsg temps dropped dramaticly and we got ride of some of our EGTs. also when we switched to the ATS turbo and WMI on our 02' we lost about 300*. Rumor has it Kent Crowder never sees 1200* on his 1000+ hp 12v.
I got the chance on Saturday to meet and watch Mr. Tomac pull @ Tampico and must say I was quite impressed. The rig is really tame looking compared to his competion dodges. The video does no justice in the matter of smoke. After the big 12v's cleared the track you couldn't see the other side but Micheal's Duramax smoked less then most of the street classers'. Watcha wanna bet the Haisleys' or George's truck don't get driven to work between pulls ;) Great hook Micheal!
results from ATPA pull in Tampico, IN 6-25-05
Micheal Tomac - DURAMAX - 318.61 (308.32')
George Peterson - CUMMINS - 305.78' (298.58')
Craig Severson - CUMMINS - 303.19' (279.21')
Jeremy Strayley - CUMMINS -296.96'
Todd Cox - CUMMINS - 293.26'
Curt Haisley - CUMMINS - 288.34'
Nick Hayes - CUMMINS - 270.13'
Mike Schinlaub - CUMMINS - 266.58'
(pull off distance)
[ 07-02-2005, 03:06 AM: Message edited by: Micheal Tomac ]
Results from DHRA Diesel Nationals 6-25-05 & 6-26-05
First distance is from Saturday Qualifying and Second distance is from Sunday Finals
Street Diesel
1. Strothkamp, Jeff - CUMMINS - 290.04 401.05
2. Uptegraft, Ryan - DURAMAX - 285.03 390.10
3. Tomac, Micheal - DURAMAX - 291.07 362.09 (popped boot)
4. Amos, James - CUMMINS - 289.10 341.09
5. Mohney, Gene - CUMMINS - 284.08 338.04
6. Beck, Jerry - CUMMINS - 280.11 332.09
7. Peterson, George - CUMMINS - 294.11 331.09
8. Michael, Kyle - DURAMAX - 284.02 330.10
9. Isaacs, John - CUMMINS - 282.06 327.09
10. Coppess, Terry - CUMMINS - 281.00 326.04
11. Gullet, Ray - CUMMINS - 290.06 325.10
12. Lawson, Chris - CUMMINS - 278.11 324.11
13. Moss, Jeremy - DURAMAX - 277.09 323.00
14. Harness, Chris - CUMMINS - 282.08 322.00
15. Crawford, Larry - CUMMINS - 282.05 319.02
16. Burns, Justin - DURAMAX - 278.09 314.11
17. Rudnick, Jason - CUMMINS - 276.09 301.02
18. Simpson, Michelle - CUMMINS - 274.04 301.02
19. Swiderski, Dale - DURAMAX - 274.01 299.05
20. Smith, Rick - DURAMAX - 271.06 299.01
21. Schworm, Todd - CUMMINS - 272.09 290.02
22. Cole, Kevin - CUMMINS - 274.08 285.02
23. Thomas, Luke - CUMMINS - 290.02 185.02
24. Hodler, Brad - CUMMINS - 294.08 73.00
25. Korty, Roderick - CUMMINS - 283.10 DQ
Super Street
1. Cox, Todd - CUMMINS - 288.10 279.08
2. Hodges, Shawn - CUMMINS - 284.08 278.10
3. Straley, Jeremy - CUMMINS - 292.07 276.02
4. Severson, Craig - CUMMINS - 281.01 267.03
5. Ingram, Brad - CUMMINS - 254.03 264.02
6. Linne, Jason - CUMMINS - 144.04 185.05
7. Henry, Jake - CUMMINS - 58.05 55.03
8. Haisley, Curt - CUMMINS - 284.09 1.00
Modified Diesel
1. Martin, Terry - CUMMINS - 301.03 347.09
2. Crowder, Kent - CUMMINS - 256.04 347.09
3. Haisley, Van - CUMMINS - 291.10 321.05
4. Watson, Christopher - CUMMINS - 294.00 284.10
5. Hayes, Nicholas - CUMMINS - 267.01 266.00
6. Vorhees, Scott - CUMMINS - 217.06 203.06
7. Stacey, Erik - CUMMINS - 1.00 1.00
Apparently the sled operators haven't discovered "grousers" for their pans??? 400' is geting out there...
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