Competition Sun Coast Launches a Winner!!

[DavidTD]

DavidTD, Sorry to disappoint you, but all my runs at the track have been without NOS.

Why would that disappoint me? That impresses me. That means on your 124mph pass at 7000 pounds you are making around 900 hp on #2 only with a bent pushrod and a blown turbo.

 

[sbentz]

Getting interesting! Some of what I read is accurate, some may be off a bit.

Here are a few points to chew on from my limited experience:



First, NOS:

Our dragster will run 2 tenths slower without NOS. (average)

The more we spray, the more different it runs. . 020 . 050, . 070, . 090, . 125... pre turbo, in between the turbos, right in the intake, each spot does different things. We ran 1 jet, 2 jets, one at WOT, one at 3rd gear, all kinds of things. All BS aside, a little between the turbos is what we are doing now, just to cool down the HP compressor section. I have thought about taking it off just to reduce all of the questions.



ELEVATION

Yes, there was much smaller effect than everyone was telling us on a back to back pass. The 9. 11 tuneup ran 9. 07. Where does the difference comes in? At 900 ft,we were finally able to do some agressive timing change. That is where the 8. 75 came in. We made no other change, and after listening to many people, Garmon's advice was right on. We were never able to run much timing in Denver.



Now, we returned to Denver, and Grand Junction, and with that timing? 9. 45 and slower. So, my answer to the altitude derate factor? 3-4 tenths.



WEIGHT

Now for some odd theory of mine. As we stripped some weight lately, we noticed nothing. Once you get to a point of 2500 or less weight, there seems to be little gain in accelleration. The engine has so much reciprocating weight, it is a bit self limiting on acceleration rate. BUT, in addition, study the A/FD vs the BA/D (injected nitro vs. blown alcohol) dragsters. The injected nitro cars actually perform better when they lug and pull weight (Hmmmm... like a diesel)... . The blown cars, more weight, the slower they go. My thought, is finding the best combo of weight, gear, fuel, boost, and timing vs. corrected altitude. Simple, right?



OK, last little thing. We recently found out that the 2 different P pumps we have were very low on fuel delivery AND RPM compared to what we were led to expect. As most of you have seen if you saw the car run, is it is a bat out of hell for 300 feet, and then lays over and does OK out the back door. Now we know why.



We are getting ready to test out the new FP and a slightly wilder turbo setup or two. Just time to get it all done is the holdup.



Keep it up, TDR boys, this chatter is how everyone learns a few things... . And gets a dig or two in from time to time.....

 

[DavidTD]

Great to hear from you. If you get that thing out the back as strong as it leaves then I have one thing to say... I want to be there. No doubt it looked strung out on the big end but everytime I watch that video of Muncie, I just wonder what that sling shot has to feel like. I figured it have to slow down from that launch. :-laf

 

[Turbo Thom]

... ... ... Good to hear from you Scott... ..... Been a little while. Turbo configuration and pump output should been able to work on the rail the same as it does on the heavy trucks. I can tell from all the post, what works for us dosen't seem to be used out west. The combinations are not the same. If we can ever get a race out there where we can go, the answers will be there. Fuel supply and turbo's will remain the same. Timing will change but I think that's all. For sure. These trucks need to get together. I talked to Jeff about going out there and he said we really need to do it. How long from work for us? A week?



Anyway , good post. Very interesting.



. . Preston. .

 

[HOSS]

. . I talked to Jeff about going out there and he said we really need to do it. .



. . Preston. .

Come out to the Northwest Nationals on Sept 19th at Pacific Raceway in Kent Washington Oo.



A fast sea level track

 

[CumminFast]

Hey Maddogg!

Why don't you come to an event where Garmons is racing? I heard you were scared and would only compete at events where you knew you would be top dog. I was really hoping to see you at Munice, Boiling Green, or Scheids but I guess you had too much competition!!!

 

[sbentz]

We were planning on doing the Kent race, but cr*p, business gets in the way. No way to fit into the schedule. Cummins Rocky Mountain is taking over all of the Cummins Intermountain (Utah, Southern Idaho, and Nevada) trade area in a friendly merger, and things are hectic. .



I think that Denver is a great middle place for all to come next year to answer "which truck is king"... . Truck Fest 05, if it was not for the elevation, would answer it all... But the elevation throws everyone the same curve ball.

 

[Turbo Thom]

Scott... ... ... . How bout some place in Mo? Central in the country not central to Colorado. Are there any drag strips in Mo? This would be a very cool event. Can you imagine, 2000 trucks and a $20,000 purse. Already I'm gettin excited. Wow. I'm breathless.



. . Preston. .

 

[sbentz]

We would consider anywhere. Texas, Oklahoma, Missouri, central somewhere with 1500 ft or so elevation. It would be fun to find a "winter track" somehere, where once we get out of the frozen north in November or so.



The key is getting a big turnout. Participants and Racers.



Or maybe early in the spring, after all of these new trucks are ready to rock and roll...

 

[KatDiesel]

Scott... ... ... . How bout some place in Mo? Central in the country not central to Colorado. Are there any drag strips in Mo? This would be a very cool event. Can you imagine, 2000 trucks and a $20,000 purse. Already I'm gettin excited. Wow. I'm breathless.



. . Preston. .

Kansas City : KCIR

Topeka : Heartland Park

 

[Turbo Thom]

Now I see a plan getting started. Now who can take the lead and get it started? I'll talk the Jeff, Monday. Who know the folks at Heartland? Ask them if it's okay with them. David's a good organizer. I'll talk to him too. This can happen.



. . Preston. .

 

[crawler]

Enis Texas



Not Cental as far as North and South are concerned. Just central between the coasts



But, if you want a winter track at low elevation that would be the one.

 

[Turbo Thom]

Would it be center as for a folks from both coast getting to it?



. . Preston. .

 

[MADDOG2]

Hey Maddogg!

Why don't you come to an event where Garmons is racing? I heard you were scared and would only compete at events where you knew you would be top dog. I was really hoping to see you at Munice, Boiling Green, or Scheids but I guess you had too much competition!!![/QUOTE



Hey CumminFast why don't you come to an event where MADDOG is racing? I live in the West and you guys live in the East. Yep you guessed it I am really really scared.

 

[KatDiesel]

Enis Texas





But, if you want a winter track at low elevation that would be the one.

Actually its Ennis, TX. Nice lil town 32miles south of Dallas. Haven't been back there in a few years so not sure what shape the track is in. I just remember when they first built it and spent alot of time out there.

 

[Idaho CTD]

Actually Nebraska is the most centrally located from all points. I dont think there is squat for tracks there though. Somewhere in Kansas would be fairly close to central as well. John (FloorIt) or Eric might be able to set this up.

 

[KatDiesel]

Actually Nebraska is the most centrally located from all points. I dont think there is squat for tracks there though. Somewhere in Kansas would be fairly close to central as well. John (FloorIt) or Eric might be able to set this up.

The 1/4 mile thats closest to me sucks. Scribner, NE is in the middle of nowhere as well. Too bumpy and too slick..... everyone takes their 14 and 15second "hotrods" out to it. Thats why I listed those two tracks in Kansas, they would be much much better suited for a gathering.

 

[Fletcher]

You guys aren’t going to believe this but, during my last 10. 47 pass my left rear wheel fell off and half way down the track I was abducted by an extraterrestrial presence, and probed. My pinion walked up and out of the housing, severing my fuel cell. And, to top it all off, ET put me back in the truck, into the passenger’s seat. Wow, my arms weren’t even long enough to reach over and out the driver’s window to receive my time slip. This really happened :--)

 

[Turbo Thom]

Now Fletch, what I really want to know is just where were you probed? I can believe the wheel fell off and your arms are short but the rest, sounds like you were probed with a hot poker and lost your mind. Now what really happened.

We might be a little slower down here but not that much. Not the trucks though.



. . Preston. .

 

[HOSS]

Now Fletch, what I really want to know is just where were you probed? We might be a little slower down here but not that much. Not the trucks though.



. . Preston. .

You do NOT wanna know



Believe me I saw the run in question and have heard all about it