Randeez 2012 Budget Yukon Denali Build (stick on hood scoops galore)

[randeez]

np149 stuff:
to sum up.... i ordered a complete rebuild kit about 2 weeks ago, the viscous coupling got sent and delivered a couple days after. figured no big deal itll come from a few diff places. waited.... waited... looking at the order online it said it was shipped and delivered, waited another couple days. finally called them today and told them only got one part a week and a half ago wheres the rest?? he gets typing on the computer and comes back and says its getting delivered...today. so i got to look like an impatient a-hole.
still no idea when the 32 spline input adapter will be done. coming up on 2 weeks with it also.

 

[randeez]

 

[Doubeleive]

View attachment 240075 View attachment 240076 View attachment 240077

is that the magnesium one?

 

[randeez]

is that the magnesium one?

now that you mention it, i didnt even check...pretty sure it does feel heavier than the old case half - maybe aluminum? the old case half wasnt in bad shape so maybe ill check and just reuse the old one if it is magnesium.

another item on the agenda is making this thing shift into something other than D, looking at that diagram the only parts that are different between 6speed and 4speed trucks are #22(handle) and #24(gear selector mechanism) prob going to order both and see if its that easy

 

[Doubeleive]

now that you mention it, i didnt even check...pretty sure it does feel heavier than the old case half - maybe aluminum? the old case half wasnt in bad shape so maybe ill check and just reuse the old one if it is magnesium.

another item on the agenda is making this thing shift into something other than D, looking at that diagram the only parts that are different between 6speed and 4speed trucks are #22(handle) and #24(gear selector mechanism) prob going to order both and see if its that easy

A magnet may somewhat stick to magnesium so that's one way to check, you need a 3d printer for those other goodies

 

[randeez]

A magnet may somewhat stick to magnesium so that's one way to check, you need a 3d printer for those other goodies

its aluminum... which kinda sucks cause they press the rear out bushing and the front out support bearing into the case before they ever send it, i could just order those two items and swap them into the magnesium case to reuse it i guess.

truck is about back together, battery was dead so its on the charger now. if i can get it running check fluids and for leaks.
i need to put the lower cover on the transmission, which i gotta pull the exhaust cross over back off to do. after that, sway bar and i think its about ready to be put back on the ground.

i pressurized the coolant system and no leaks into the radiator cooler lines so a little premature on that . was planning on eventually doing it anyway so no big deal - its not done yet but i will see how the weekend goes.

 

[iamdub]

You've actually had 3-4 consecutive posts lately that weren't about some sort of misfortune with all of this. Ima call you "Charmin" cuz you're on a roll!

 

[randeez]

its all gone back together so nice , it might actually work this time for a while

 

[Doubeleive]

the magnesium is better but you can put a case saver on it and that way it wont wear and start leaking not sure how those fit i'm assuming it goes on the inside. nothing to worry about right away, I drove mine to almost 300k it leaked but it was a very slow leak those things are tough I beat the crap out of mine and it didn't break till about 300k and I'm not sure it was even broken but the transmission shop blamed the transfer case and warrantied it anyway.

 

[HiHoeSilver]

its all gone back together so nice , it might actually work this time for a while

Way to jinx it.

James be at the track like....

 

[randeez]

He better hurry up, cause we techd in

 

[randeez]

Blasting out if the hole lol for reference I've done a 1.6x 60',
(Left lane)

Got another half second off it...prob could've got another run in but was getting late got a few more things to do. With that mph it should be knocking on 10s

 

[mikeyss]

How are you liking Np149 in comparison to your original one? Does it hook up any better?

 

[randeez]

No input shaft, no np149...going to need longer driveshaft also, by like an inch.

 

[randeez]

No input shaft, no np149...going to need longer driveshaft also, by like an inch.

No np149, input adapter didnt show up, and I'll need like an inch longer rear driveshaft.

 

[avalonandl]

I need another inch on my shaft too.......ooops LOL

 

[randeez]

I hear ya...why else would I be trying to make a yukon fast

...too much?

 

[swathdiver]

Your hard work is paying off Randy, that's a great start! Let us know when we should all get together again and if you want to run her at Orlando Speedway or Moroso.

 

[randeez]

Your hard work is paying off Randy, that's a great start! Let us know when we should all get together again and if you want to run her at Orlando Speedway or Moroso.

thanks james!
there is a few more things i need to do asap - aside from the tuning in general, on the logs from these runs upper rpm the injector duty cycle went over 100, soon as that happened im guessing they stuck opened and fuel pressure dropped. its set up for 58psi but i didnt have the boost reference connected. that may solve the issue short term but its going to be real close to 100%idc. i can probably bump up the fuel pressure to 65 or 70 and also boost reference the regulator - but again mostly just working with what i have, really need some bigger injectors.

i think after i fix the fuel itll be real close to trapping 130mph , issue with that is with the 4.10s im about to shift into OD which i was told not to do. also i need to get the shift lever and crap to shift into D3

 

[swathdiver]

thanks james!
there is a few more things i need to do asap - aside from the tuning in general, on the logs from these runs upper rpm the injector duty cycle went over 100, soon as that happened im guessing they stuck opened and fuel pressure dropped. its set up for 58psi but i didnt have the boost reference connected. that may solve the issue short term but its going to be real close to 100%idc. i can probably bump up the fuel pressure to 65 or 70 and also boost reference the regulator - but again mostly just working with what i have, really need some bigger injectors.

i think after i fix the fuel itll be real close to trapping 130mph , issue with that is with the 4.10s im about to shift into OD which i was told not to do. also i need to get the shift lever and crap to shift into D3

Yeah, hitting overdrive would be ******* the transmission, we always held it to 3rd. With 4.10s @ 125 MPH you're motor's turning about 5400-5500 rpms. Up to 130 would be around 5700 mathematically. Is that what you're seeing?