I bet a quick connect popped loose. That also happened to me, just as I was exiting the freeway. A dude pulled up next to me and let me know something happened. We were both lucky Wes.
Randeez 2012 Budget Yukon Denali Build (stick on hood scoops galore)
- Thread starter randeez
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ya I reached down by the engine mount and one of the lines I think the upper one was flopping around a lot so that had to be it I tried to stick my phone up there where the lines go in to take a picture but couldnt quit get the right angle but man it sure looks like the truck took a bath in it, it's everywhere big mess.
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randeez
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That was fast, ordered over the weekend.
It comes with 1/2" QDC (quick disconnect) fittings but I havent really been able to find out much about fittings available. seems they are an oem type connection but the google returns abunch or air or hydraulic line fittings. I ordered -8orb x -10an adapter for feed and -8an x -8an for return anyway.
It comes with 1/2" QDC (quick disconnect) fittings but I havent really been able to find out much about fittings available. seems they are an oem type connection but the google returns abunch or air or hydraulic line fittings. I ordered -8orb x -10an adapter for feed and -8an x -8an for return anyway.
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randeez
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Couple friends headed out to track Friday, figured I'd tag along...maybe run the 1/8 just to see how she did. Was fighting with getting it to shift out of first. Actually worked out good...local shop there seen me struggling and made a couple quick changes in the tune 
Anyway...new personal best letting out at the 660? Should be pretty quick.
10-11* of timing...soft launch, 6lb wastegate spring, log shows 8-9lbs of boost,93oct...just a 1.8 60' and this would have been a 11 sec run probably
this was with stock flex pump and 1200cc injectors, no fuel pump upgrade yet. afr stayed in the bottom 12s, probably could have let it hang out a little further but playing it safe,
Anyway...new personal best letting out at the 660? Should be pretty quick.
10-11* of timing...soft launch, 6lb wastegate spring, log shows 8-9lbs of boost,93oct...just a 1.8 60' and this would have been a 11 sec run probably
this was with stock flex pump and 1200cc injectors, no fuel pump upgrade yet. afr stayed in the bottom 12s, probably could have let it hang out a little further but playing it safe,
Badass. I want videos! Keep it going! That thing is going to show up some quick cars! [emoji16]Couple friends headed out to track Friday, figured I'd tag along...maybe run the 1/8 just to see how she did. Was fighting with getting it to shift out of first. Actually worked out good...local shop there seen me struggling and made a couple quick changes in the tune
Anyway...new personal best letting out at the 660? Should be pretty quick.
10-11* of timing...soft launch, 6lb wastegate spring, log shows 8-9lbs of boost,93oct...just a 1.8 60' and this would have been a 11 sec run probably
this was with stock flex pump and 1200cc injectors, no fuel pump upgrade yet. afr stayed in the bottom 12s, probably could have let it hang out a little further but playing it safe,
View attachment 218972
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randeez
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working on a few driving ones, one inside...one outside. gopro mic sucks ass outside truck though. the inside one needs to be pretty loud to hear because it is pretty quit inside. not quite as quit as the video makes it out to be. need to get a new gopro and external mic
and the inside one i had on the sunroof recorded upside down so i had to rotate the entire video and resave oops
and the inside one i had on the sunroof recorded upside down so i had to rotate the entire video and resave oops
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randeez
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really shouldve edited out 75% of it.... o well
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randeez
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No wind noise, but quiet inside
Looks like a fun drive. [emoji16][emoji106]
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I fast forwarded some of it but saw what I needed. Nice!
you need a valentine one to go with that
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randeez
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new trucool 40k came in, just it and the remote mount cooler was fine for track with plenty of cool down time between. i would like to play around on the street without having to worry about back to back runs so i went ahead and plumbed it back thru the radiator. i have one hose that i can move between the two of them to go back and forth pretty quickly if i dont like it though. front bumper still off i might go for a quick drive tonight and make sure no leaks before i put it back on.
still waiting on fuel pump to get delivered, said supposed to be shipped on 3/25 but not sure - everywhere else saying backordered so we'll see. regulator, filter, check valve, and abunch of fittings already here waiting.
still waiting on fuel pump to get delivered, said supposed to be shipped on 3/25 but not sure - everywhere else saying backordered so we'll see. regulator, filter, check valve, and abunch of fittings already here waiting.
I just sent my trans off to be repaired under warranty, seems my last full throttle AWD launch broke something even though it’s built for 900 HP. As a note, I thought I’d mention that the builder, Performabuilt, instructs to remove the radiator from the loop because they say it restricts cooling capacity. I’m running a Whipple on my 6.0, cammed , headers and 2800 stall.
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randeez
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interesting, i'll keep an eye on it. i kinda assumed it was just a tube submersed top to bottom in the radiator.
my trans is not happy one bit lol, doing everything i can to keep temps down. shifts are still firm and not noticing any slip but builds a lot of heat im trying to keep under control. and its no where near as turned up as i planned on keeping it
my trans is not happy one bit lol, doing everything i can to keep temps down. shifts are still firm and not noticing any slip but builds a lot of heat im trying to keep under control. and its no where near as turned up as i planned on keeping it
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randeez
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im starting to think a yukon isnt the best thing to make into a drag truck
so last time i went track i did a little bit of a full pull, it went like: soft launch, ran the 1/8th, looked down at afr trend - was fine, got back in it and it mph'd 116 lol
have been having trouble getting it to shift out of 1st, it would blow thru the shift point(6100rpm), hit redline (7200rpm), shut off, come back, traction control, etc the 1-2 shift would take like half a second, all other shifts good.
been reading all i can on how to get trans to shift worth a crap, messing with torque coefficients, and airmass based blahblah. and it seems like i can either get the 1-2 shift good and all the rest are off... or 1-2 is crap and every other is great, or they're all great so long as you dont go WOT
so i'm trying to limit throttle movement in 1st to say 75-80% or so and see if that will get it to shift good enough.
its been running great, i used some pushlok air fittings for the wastegate lines, boost had been spiking up to 12psi every once in a while (power down shifts mostly) but would usually be 9-10psi. i read someone had issues with the pushlok fittings that swiveled (i had one on the compressor) the swivel uses an o-ring to seal that isnt really rated for the heat and leaked. so i swapped it out for a straight connector and has brought boost back down to a pretty consistent 7.5-8 psi, no spikes.
trans cooler now has remote dual fan cooler, trucool 40k, and stock radiator cooler in line lol. i will prob heed rocket man's warning and install a deep pan with extra capacity.
soo last night at track - probably last cool night till next "winter" down here so i took her out, same ol shitshow only a few runs... wanted to try out traction control on/off/fuse pulled but no such luck. buncha broke down pos cars. really didnt do any better mph wise than first time out, which i was kinda bummed about wasnt sure why but looking at the logs it was pretty obvious... i took 3.5-4 psi out of it and pretty much ran the same time.
60's werent great with the 1-2 shift messed up, had one 1.74 even with a little stumble on the shift, others were 1.9x. if i can get a clean shift i think itll be real close to a 1.6x.
pump ship date pushed back again.... so no fuel for atleast another week.
i did order a new tci flexplate sfi approved, from summit was already delivered todaynice looking piece. i will probably have someone install, dropping trans is a mofo on my back, i aint @Rocket Man
[after fuel sys all up and going] i think ill have enoughpower to blow this old engine up anytime i want, so im going to start re-denali-izing my yukon. not that ive stripped it out or anything. but i mean to try and hunt down/eliminate all the noises/vibrations, get it to ride nice and smooth again, prob need new shocks for the rear... they're a little bit out of their range and have over a year and half of beatings on them. going to get new (larger) aluminum driveshaft for the rear made, front shaft is fine but a little tight...needs another 1/2-1" taken off of the stock length, i'll prob have my guy local do that - not so worried about it failing as rear. check wheel bearings, lube suspension, etc. have a few exhaust ticks i need to close up from rushing thru welding it all up myself.
so last time i went track i did a little bit of a full pull, it went like: soft launch, ran the 1/8th, looked down at afr trend - was fine, got back in it and it mph'd 116 lol
have been having trouble getting it to shift out of 1st, it would blow thru the shift point(6100rpm), hit redline (7200rpm), shut off, come back, traction control, etc the 1-2 shift would take like half a second, all other shifts good.
been reading all i can on how to get trans to shift worth a crap, messing with torque coefficients, and airmass based blahblah. and it seems like i can either get the 1-2 shift good and all the rest are off... or 1-2 is crap and every other is great, or they're all great so long as you dont go WOT
so i'm trying to limit throttle movement in 1st to say 75-80% or so and see if that will get it to shift good enough.
its been running great, i used some pushlok air fittings for the wastegate lines, boost had been spiking up to 12psi every once in a while (power down shifts mostly) but would usually be 9-10psi. i read someone had issues with the pushlok fittings that swiveled (i had one on the compressor) the swivel uses an o-ring to seal that isnt really rated for the heat and leaked. so i swapped it out for a straight connector and has brought boost back down to a pretty consistent 7.5-8 psi, no spikes.
trans cooler now has remote dual fan cooler, trucool 40k, and stock radiator cooler in line lol. i will prob heed rocket man's warning and install a deep pan with extra capacity.
soo last night at track - probably last cool night till next "winter" down here so i took her out, same ol shitshow only a few runs... wanted to try out traction control on/off/fuse pulled but no such luck. buncha broke down pos cars. really didnt do any better mph wise than first time out, which i was kinda bummed about wasnt sure why but looking at the logs it was pretty obvious... i took 3.5-4 psi out of it and pretty much ran the same time.
60's werent great with the 1-2 shift messed up, had one 1.74 even with a little stumble on the shift, others were 1.9x. if i can get a clean shift i think itll be real close to a 1.6x.
pump ship date pushed back again.... so no fuel for atleast another week.
i did order a new tci flexplate sfi approved, from summit was already delivered todaynice looking piece. i will probably have someone install, dropping trans is a mofo on my back, i aint @Rocket Man
[after fuel sys all up and going] i think ill have enoughpower to blow this old engine up anytime i want, so im going to start re-denali-izing my yukon. not that ive stripped it out or anything. but i mean to try and hunt down/eliminate all the noises/vibrations, get it to ride nice and smooth again, prob need new shocks for the rear... they're a little bit out of their range and have over a year and half of beatings on them. going to get new (larger) aluminum driveshaft for the rear made, front shaft is fine but a little tight...needs another 1/2-1" taken off of the stock length, i'll prob have my guy local do that - not so worried about it failing as rear. check wheel bearings, lube suspension, etc. have a few exhaust ticks i need to close up from rushing thru welding it all up myself.
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randeez
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talk to a guy who caught a couple nice vids last time out, nice hd cam, not sure how to embed at a certain time... first run is about the 4min mark...i think there's another about 7:50 in
you can really see how terrible the 1-2 shift is on the first one
you can really see how terrible the 1-2 shift is on the first one
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Thanks for posting!! Sad to see the ZO6 hit the wall.
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randeez
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yea i was right there in the burnout box and watched it...stayed in it to long. he was staged in the right lane hit that side first, went across and hit left side. almost clipped other driver in left lane
I still dont have it back in ya know...btw is your torque converter able to lock up at wot? That’s in the tune. Would help out with shifting.im starting to think a yukon isnt the best thing to make into a drag truck
so last time i went track i did a little bit of a full pull, it went like: soft launch, ran the 1/8th, looked down at afr trend - was fine, got back in it and it mph'd 116 lol
have been having trouble getting it to shift out of 1st, it would blow thru the shift point(6100rpm), hit redline (7200rpm), shut off, come back, traction control, etc the 1-2 shift would take like half a second, all other shifts good.
been reading all i can on how to get trans to shift worth a crap, messing with torque coefficients, and airmass based blahblah. and it seems like i can either get the 1-2 shift good and all the rest are off... or 1-2 is crap and every other is great, or they're all great so long as you dont go WOT
so i'm trying to limit throttle movement in 1st to say 75-80% or so and see if that will get it to shift good enough.
its been running great, i used some pushlok air fittings for the wastegate lines, boost had been spiking up to 12psi every once in a while (power down shifts mostly) but would usually be 9-10psi. i read someone had issues with the pushlok fittings that swiveled (i had one on the compressor) the swivel uses an o-ring to seal that isnt really rated for the heat and leaked. so i swapped it out for a straight connector and has brought boost back down to a pretty consistent 7.5-8 psi, no spikes.
trans cooler now has remote dual fan cooler, trucool 40k, and stock radiator cooler in line lol. i will prob heed rocket man's warning and install a deep pan with extra capacity.
soo last night at track - probably last cool night till next "winter" down here so i took her out, same ol shitshow only a few runs... wanted to try out traction control on/off/fuse pulled but no such luck. buncha broke down pos cars. really didnt do any better mph wise than first time out, which i was kinda bummed about wasnt sure why but looking at the logs it was pretty obvious... i took 3.5-4 psi out of it and pretty much ran the same time.
60's werent great with the 1-2 shift messed up, had one 1.74 even with a little stumble on the shift, others were 1.9x. if i can get a clean shift i think itll be real close to a 1.6x.
pump ship date pushed back again.... so no fuel for atleast another week.
i did order a new tci flexplate sfi approved, from summit was already delivered todaynice looking piece. i will probably have someone install, dropping trans is a mofo on my back, i aint @Rocket Man
[after fuel sys all up and going] i think ill have enoughpower to blow this old engine up anytime i want, so im going to start re-denali-izing my yukon. not that ive stripped it out or anything. but i mean to try and hunt down/eliminate all the noises/vibrations, get it to ride nice and smooth again, prob need new shocks for the rear... they're a little bit out of their range and have over a year and half of beatings on them. going to get new (larger) aluminum driveshaft for the rear made, front shaft is fine but a little tight...needs another 1/2-1" taken off of the stock length, i'll prob have my guy local do that - not so worried about it failing as rear. check wheel bearings, lube suspension, etc. have a few exhaust ticks i need to close up from rushing thru welding it all up myself.
swathdiver
Full Access Member
im starting to think a yukon isnt the best thing to make into a drag truck
...so im going to start re-denali-izing my yukon.
I'm thinking of an old G-Body coming to your stables soon, maybe an Olds Cutlass or Monte Carlo? Then get ready for some 1.3X short times!
We used to control our boost mechanically via two methods. First was the factory wastegate which set the minimum boost pressure. Then we by-passed the electronic control and used a compressor valve for control from inside, fit perfect inside the ash tray. On launch, this type of valve would give a nice swing in pressure, about 5 psi over what the max pressure would be in third gear so setting the dial to 18 psi would give a 1st gear swing of about 23 psi. Anything over 24-25 psi would lift the heads off the block but they could run 20 psi all day long in any gear.
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