95' Junker Drag Truck

You bring each cylinder up to top Dead center and you use a valve spring compressor that doesn't require you to pull the head off. U can do two cylinders at a time due to each one has a companion cylinder 1-6 2-5 and 3-4
 
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loganp said:
WHEELIE MACHINE!!!!

I was thinking maybe someday he might convert it over to a short bed.
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I was seriously researching everything involved with a shortbed conversion. For now, it's out of my price range, new tank, driveshaft, brake lines, bed are too expensive.

Then I read about trucks getting into the low 10's high 9's wishing they hadn't shortened the truck because it's too unstable at high speed.

For now, it's going to have to stay a long bed, although a short bed sure would fit nicely in the garage whereas the long bed is a tight fit!
 
Big Blue24 said:
So that's how you cut those 1.9 to 2.0 60' times with street tires on your 03'!!!!
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It's all Open Diff magic!

Are we open for bets on the new Trap Speed? Too many things are telling me that your Truck's New Trap Speed will be indiscernible. :poke: I hope for the best and for you to prove me wrong!
 
Big Blue24 said:
I was seriously researching everything involved with a shortbed conversion. For now, it's out of my price range, new tank, driveshaft, brake lines, bed are too expensive.

Then I read about trucks getting into the low 10's high 9's wishing they hadn't shortened the truck because it's too unstable at high speed.

For now, it's going to have to stay a long bed, although a short bed sure would fit nicely in the garage whereas the long bed is a tight fit!
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if you go mid-engine, with the engine deep between the frame rails you might see big gains at the drag strip, it might also handle amazing, we could watch you and the Junker racing at Indy during the drag offseason,2oomph:bow:
 
Seeing how clean it ran at the NHRDA event, I think it is time to revisit racking the barrels.
 
Tonight the Junker was SLOW!

Before leaving for the track, i hooked up a pressure gauge to the accumulator port on the transmission, and installed some 285/75/16 Yokohama Geolanders with about 70% tread.

In my test driving earlier in the afternoon before the track opened, I discovered that the torque converter will no longer lock up period. I must have severely injured it at the NHRDA event...I don't drink but it was driven like a drunk was behind the wheel before, during and after the event and it sustained a lot of abuse.

So I went to the track tonight knowing that I wouldn't have lock-up.

Well, first pass with cool tranny fluid it went a lousy 13.71 @ 103.38 MPH.

My next pass was 17 minutes and the fluid was pretty hot, 15.04 @ 98.08 MPH. On this run I watched the boost gauge and it never got above 24 psi. Truck smoked heavily the whole pass and maintained about 2600 rpm. I'm guessing without the extra load of lock-up, I can't get the primary bottom turbo spooled.

Then for reaction time practice, I made one more pass which was even slower 15.36 @ 91 MPH.


So for those wondering how much a lock-up switch helps, in my case, not having lock-up dropped my time by a solid 1.4 seconds which is huge in a 1/4 mile race.

Also, running a gauge down the track was very informative on what the transmission is doing and how I have the valvebody tuned. I'm only making 160 PSI in 1st-3rd when the fluid is good and warm, then when it shifts to overdrive, pressure goes up to about 185 psi.

Seeing how low my pressure is on warm fluid makes me wonder how much more power the single disk converter would have held if I had properly set the line pressure closer to 200 psi.

The next upgrade on my list is a triple disk torque converter along with increased line pressure in the valvebody.

Tonight's slow time slips:

1371TimeSlip.jpg
 
Man you were dead on the converter not locking so great. Now you dont have to chase down anything.

By the way what gauge did you use for line pressure readings?
 
YOUNG GUNS15 said:
Man you were dead on the converter not locking so great. Now you dont have to chase down anything.

By the way what gauge did you use for line pressure readings?
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It's an oil filled 0-200 psi gauge I bought at harbor freight about 2 years ago. I think it was about $20 for just the bare dial gauge. I then coupled it with parts from my 0-100 psi harbor freight injection pressure test kit, and added a couple of feet of boost reference line to 1/8" NPT fitting to thread into the test port on the tranny.
 
dvst8r said:
Seeing how clean it ran at the NHRDA event, I think it is time to revisit racking the barrels.
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I agree, when I get the tranny put back together, I'm going to definitely add more fuel via racked barrels, and full-cut DV's.

I hope a spectator at the Las Vegas midnight mayhem drags posts a video of one of my runs, it's REALLY smoky and dirty with just mid 20's psi of boost pressure.
 
A big thanks goes out to the NHRDA, they took a few nice pictures of the Junker at the Desert Diesel Nationals event.

The new twins spool fast and clean up nice, even in a moderate load situation like a burnout:

Spool up
Burn1.jpg



Clean up
Burn2.jpg



Burnout Competition Pics:
Burn6.jpg


Burn7.jpg


Burn10.jpg



I love this final shot, it would make a great garage wall poster!!!

Burn12.jpg
 
Sweet pics!! Makes for a truly great avatar pic.

Might as well just take off the front bumper and save some weight ya.
 
Big Blue24 said:
I was seriously researching everything involved with a shortbed conversion. For now, it's out of my price range, new tank, driveshaft, brake lines, bed are too expensive.

Then I read about trucks getting into the low 10's high 9's wishing they hadn't shortened the truck because it's too unstable at high speed.

For now, it's going to have to stay a long bed, although a short bed sure would fit nicely in the garage whereas the long bed is a tight fit!
Click to expand...

i have been 9.3's@150mph with my short bed prostreet truck and it was perfect. its not the wheelbase that makes it unstable, its the chassis setup.
 
Got Smoke? said:
Phil's gonna be running a special on TC's next month....perfect time to upgrade! ;) LOL
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Phil and I have been talking, a triple disk torque converter will find it's way into my transmission very soon!


BigDodge said:
i have been 9.3's@150mph with my short bed prostreet truck and it was perfect. its not the wheelbase that makes it unstable, its the chassis setup.
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Good to know, I may have to re-investigate a shortbed conversion.
 
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