you need a valentine one to go with thatNo wind noise, but quiet inside
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you need a valentine one to go with thatNo wind noise, but quiet inside
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
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.
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.