wap

Only 1275???

I wonder what is wrong with my truck, I can hit 1500 with the tst on tt03 pretty easy on a hard run. Standard program isnt as bad but 1350 aint hard to get to either.

Here I was thinkin I needed more turbo, maybe I just need one smaller like the 62.

cquestad, what kinda temps have you seen with the A5K?

BTW the temps memtioned above can be reached only by matting the pedal in 6th starting with about 10lbs of boost.

cquestad

A 62 will not fix your problem wap. LOL

Depending on what I am doing. All of these situations are on the same fueling. 575 hp...1050 tq.

DynoJet Dyno 53 lbs boost...1300 degrees.
Mustange Dyno 56 lbs boost....1450 degrees.
1/4 mile 56 lbs boost.....1500 degrees.
HUGE honking trailer...giving er all the truck has 58 lbs boost.....1500 degrees.

The A5k holds the temps down great...flows a bunch or air. If you don't "heat sink" it at low boost prior to it spool...you won't pass 1450 degrees.

morkable

From what I was seeing on the dyno the other day, the guys running tst's were having seriouse egt problems. Mine only hit in the 1400's at the end of the run.

Kevin

cquestad

Fuel does equal heat.

Was your 1400 on your Juice EGT gauge? They are the "nicest" egt readings I have ever seen.

morkable

Yes it was, but I also have ran a mechanical guage before, (just cause I didnt trust the edge) and it was within a few degrees of each other. So after I confirmed that for a few times, I turned that probe into my turbo timer probe

Kevin

wap

Got another question now that you mention that, how does your mechanical guage compare to your tst as far as egts got?

Which one should I be trusting?

My isspro probe looks a lot worse than my tst as it is a bit older so I think I am gona order a new one and see if that does anything.

PS, I figured the 62 wouldnt help any but thought I would mention it. Would an A5K be worth the $ or should I just waite and go twins?? Say a silver 62 and big brother?

cquestad

The 62 would be too small with the Big Brother...a 64 or even 66 would be better.

An A5k is going to move alot more air and be more durable than a 66. Depending on your power goals...it could be the ticket.

With the bigger housing...we have seen 800 plus dynos with the A5k. I would think with a little water in the mix...mid 700's with the normal housing could be had easily with acceptable exhaust temps. Your 66 used would fetch almost half the cost of a A5k...so TRY IT!

wap

I am gonna stud this truck and get a smarty and some ladder bars, then I might get the 5000. I just expected more heat control with this turbo and spool up/lag is a non issue. Smoke is no problem either (as in it doesnt smoke much)

I would like to do injectors and a cp3 as well but I might do the turbo first.

With the amount of people runnin the 66s and makin good numbers I just expected a little more umph and a little less drivability.

I ll keep tunin her and see what I can do.

Then again I could always do the above and talk to Nathan and see about that 66/Bb set up.
Thanks for the advice


PS, sorry to highjack Phil

abc4yew

I think with the TST you are paying a high EGT price with the TT programs....especially when you don't have a TT setup. 1500 towing....CQ you are satan in ss clothing and you rock.
If you run the standard TST with timing set to 3 to 6 degrees, A good downloader on medium to kill and dial in pressure with the TST you will find a good big power setting in the real world. If you are dropping below 18k you have lost a world of power. I was running the twins at 70psi, 1700 degrees, water on full, and never got below 26.8kpsi ...Hellfires TST 2/0 Smarty sw 3 original TM gone with RAD... 4wd peel out at 75mph shift. Hang On. Smoke was solid but not stupid.
If your truck doesn't sound like a fighter jet with the afterburners lit and you aren't scared to drive it at the limit then you haven't made enough power.

If you are accelerating from 50 to 80mph yep you can just floor it and leave it on OD and punish the turbo or use the engine properly and shift to 3rd nail it and be gone. I did a 14.8 quarter in 3rd gear....at 3500rpm.

973604x4

no problem i am soaking up all of the info

morkable

Personally I think it is too easy to over turbo. I see guys with a5k's doing good numbers on the turbo, but not going down the track that fast. I will be better prepared and qualified in a couple of months when the snow goes away and the race season starts

Kevin

cquestad

My truck is/was far from complete. 03-04 OEM injectors stink. If I have a solid set of Flux 1's...I could have dynoed 50-75 more with the same EGT. If I had a modded CP3 to support Flux 2's...I would have dynoed 75-125 more with the same EGT. Flux 3's even more! The evidence is there to support it.

The OEM injects get hot once you get as far out of their intended HP range. Spray pattern is all messed up...

Even though I hold rail pressure on the top end...at 575 hp, it dips twice on the way up there...and that BUILDS big heat. Fix that...less heat. CAM...less heat.

I had an optimal "electronics package" coupled with a big turbo and lift pump. Minimal investment to make that kind of hp. Heck...most of the cash flow has been spent up to this point on getting the hp to the ground. A couple grand more...200 more hp.

The turbo supports it.

cquestad

Kerry,

1500 was yanking a very non aero 25k up 10% grade accellerating from 65 to 90 mph!

I am a devil though...aren't I?

abc4yew

Yep, 90mph up a 10%....it was just in the way...yep....We could have turbos the size of our engine and we'd still find a way to over heat the cylinders. Man has no limits except to his pockets ks

cquestad

I HAD TO DO IT! It was in defense of the mighty CUMMINS. My lady was trying to put a move on me with her underloaded 4 horse behind her 6. OH NO!

She takes any opportunity out there to get a leg up on me...