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

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randeez

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Rocket Man

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I guess your truck eats more than fuel after all. It’s making parts disappear now.:lol:
 
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randeez

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i also need clean out the post filter/get a cartridge for it

ordering one wouldnt be here till next week, i cleaned the one i had out with some brakeclean/air compressor
 
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randeez

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first track outing sucked balls

got it back together, pump back in - gave it a couple shots out on the back roads. i changed to the 6lb springs while it was down, thinking it would make 10lbs or so and with the little boost controller i could add up to 20lbs if i wanted. of course with the 6lb springs it was about dead nuts on 6lbs, and wide open on the controller only made like 12-13lbs :emotions122:

so i threw the 9lb springs back in it...kinda left it way open and boost was off the chart, kicked the throttle body into limp mode lol. reset it rolling down the road in limp mode and was fine. closed it a good bit and left it where it made about 11psi.

there was a roll racing event going on didnt really want to go, but it WAS fairly empty when i got there and was hoping to get a few runs in. as i showed up i guess a lambo caught fire maybe? i dunno, wasnt a wreck but had all the staff ******* around with it when i went to tech in. and then it was just **** breaking every 5 passes probably
11psi is where it was on the first and pretty much only run. felt slow but it did do an 11.0@128ish, absolutely ***** a turbo 350z - hope he had probs cause that **** was slow. sat too long, ac didnt want to cool without heating up the coolant, intake temps were 120+ ect was 200*+, kicked the belt off staging - didnt notice and made the run on battery :upyours:.

had a spare belt so i threw it on, said they had the other at the line so i went up to grab it but it was trashed - was hoping it was good so i could send it again and throw that one back on, if i one i put on came off.

second run i had it cooled down pretty good, turned up the controller a little more (found out later to about 17psi) right before it was my go, truck in front of me dumped a bunch of coolant and they ****** around trying to get it prepped for a half hour as im literally at the burnout box i couldnt really keep ac on and cooling so temps and **** were way up. didnt even load it up on the trans brake. from idle made the whole pass at 50% throttle and still put a couple bus lengths on an acula tlx type s or some crap. didnt even grab the time slip.

belts - im going to try a longer belt so the tensioner isnt so close to max'd out - with the belt i have its real close to being max'd out as soon as i put it on. so i grabbed the next 2 sizes up. also grabbed the gates tensioner with a steel pulley - i was hoping to find a pulley with a raised outer edge or something to retain the belt but couldnt find anything.

for the AC im going to grab a pusher fan to throw in front of the condenser. it seems to cool fine moving but idling after its already heat soaked aint worth a crap. will probably space the 40k out further - its seems to be doing great with just it on there for now, i planned on getting an external heat exchanger, 2000+ dodge cummins use one and can grab for about 100bux. and i ordered a turbo blanket and abunch of wrap to do everything under the hood.

fuel pump did great tho! even the off the charts boost reading (22psi+) fuel pressure was good, injector duty cycle was 110% but pressure was good. at 17psi its sitting under 90% so thats about where it needs to stay until bigger injectors
 
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Rocket Man

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first track outing sucked balls

got it back together, pump back in - gave it a couple shots out on the back roads. i changed to the 6lb springs while it was down, thinking it would make 10lbs or so and with the little boost controller i could add up to 20lbs if i wanted. of course with the 6lb springs it was about dead nuts on 6lbs, and wide open on the controller only made like 12-13lbs :emotions122:

so i threw the 9lb springs back in it...kinda left it way open and boost was off the chart, kicked the throttle body into limp mode lol. reset it rolling down the road in limp mode and was fine. closed it a good bit and left it where it made about 11psi.

there was a roll racing event going on didnt really want to go, but it WAS fairly empty when i got there and was hoping to get a few runs in. as i showed up i guess a lambo caught fire maybe? i dunno, wasnt a wreck but had all the staff ******* around with it when i went to tech in. and then it was just **** breaking every 5 passes probably
11psi is where it was on the first and pretty much only run. felt slow but it did do an 11.0@128ish, absolutely ***** a turbo 350z - hope he had probs cause that **** was slow. sat too long, ac didnt want to cool without heating up the coolant, intake temps were 120+ ect was 200*+, kicked the belt off staging - didnt notice and made the run on battery :upyours:.

had a spare belt so i threw it on, said they had the other at the line so i went up to grab it but it was trashed - was hoping it was good so i could send it again and throw that one back on, if i one i put on came off.

second run i had it cooled down pretty good, turned up the controller a little more (found out later to about 17psi) right before it was my go, truck in front of me dumped a bunch of coolant and they ****** around trying to get it prepped for a half hour as im literally at the burnout box i couldnt really keep ac on and cooling so temps and **** were way up. didnt even load it up on the trans brake. from idle made the whole pass at 50% throttle and still put a couple bus lengths on an acula tlx type s or some crap. didnt even grab the time slip.

belts - im going to try a longer belt so the tensioner isnt so close to max'd out - with the belt i have its real close to being max'd out as soon as i put it on. so i grabbed the next 2 sizes up. also grabbed the gates tensioner with a steel pulley - i was hoping to find a pulley with a raised outer edge or something to retain the belt but couldnt find anything.

for the AC im going to grab a pusher fan to throw in front of the condenser. it seems to cool fine moving but idling after its already heat soaked aint worth a crap. will probably space the 40k out further - its seems to be doing great with just it on there for now, i planned on getting an external heat exchanger, 2000+ dodge cummins use one and can grab for about 100bux. and i ordered a turbo blanket and abunch of wrap to do everything under the hood.

fuel pump did great tho! even the off the charts boost reading (22psi+) fuel pressure was good, injector duty cycle was 110% but pressure was good. at 17psi its sitting under 90% so thats about where it needs to stay until bigger injectors
Those Gates green belts are the bomb, forget what they’re called.
 
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randeez

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Tried one, didn't last long.

There isn't much on it just alternator, tensioner and idler. I've tried the tightest belt I could and it's worse..
I'm thinking maybe it's pulling it so much, tensioner maxes out and it starts to come off the front of the pulley. I've been checking it literally every drive and it's jumped a rib off easily every other drive. Tried spacing the pulley out and it it rides the inside as soon as you start it. So the plastic pulley is flexing or something I don't know

As well as a handful of parts store, rockauto, summit belts

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randeez

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It's gotta be an alignment issue. Could you mount a GoPro under the hood?
dunno whatever it is, it happens high rpm.
this was from a few weeks back when i said f-it and threw a standard washer behind the pulley, not even an 1/8" thick. within a 5 min drive, no high rpm it was riding the tensioner.
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and lately when ive been driving it starts walking off the front a few ribs lol. i found a ls1tech thread where they talk about tensioner puller for a 3800 series engine, and later an ls3 camaro tensioner pulley looks to be the same that has taller sides on it. i went ahead and ordered one
 

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and lately when ive been driving it starts walking off the front a few ribs lol. i found a ls1tech thread where they talk about tensioner puller for a 3800 series engine, and later an ls3 camaro tensioner pulley looks to be the same that has taller sides on it. i went ahead and ordered one

I'm seeing taller sides as more of a band-aid. If it's trying to walk off, it'll be dragging against those taller sides and might just climb them. Have you tried using straightedges across all the pulleys to compare "pulley A" to "pulley B" then B to C, C to D, A to C, A to D etc.? Lay one straightedge across one pulley and another straightedge across the other, positioned so they overlap each other. Due to varying pulley widths, they won't align flush with each other. But, the amount they're not flush should be even along their length.
 
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randeez

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i would need the laser alignment tool, none of the outer edges are the same thickness.... the crank pulley has a 1/4 or so for timing marks outside the belt ribs. but spacing the pulley out and having /\ happen at normal rpm pretty much tells me it cant space out anymore
i think at high rpm the crank is pulling on the belt (underside) to the point where the tensioner maxes out, and at the same time slinging the belt over the topside at the tensioner plastic pulley probably flexes and belt wants to walk off...slightly longer belt and steel pulley may fix it... itll be dragging the taller sides only when in high rpm with the taller sided pulley
 

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...none of the outer edges are the same thickness.... the crank pulley has a 1/4 or so for timing marks outside the belt ribs.

Right. That's why I mentioned the two straightedge method. But, it just tests for a crooked pulley and not the alignment of the pulley as a whole.

If they're aligned at idle or low RPM but one moves at high RPM, I'd imagine that you could find the "flexible" one with the engine off. I doubt a bracket is flexing. Have you grabbed the tensioner and tried to move it in and out?
 

ks03

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Think you could eliminate the tensioner and go to a manual/ slotted adjustment?
I don’t know if you could combine your current setup with slotted brackets from
Maybe keep the idler, but route the belt under instead of over
 

Rocket Man

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Fleetrunner?
RPM belts, they used to be green but it looks like they’re black now. Stands for Race Performance Muscle. Designed especially for boosted applications. It’s what I run on The Beast.

 

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dunno whatever it is, it happens high rpm.
this was from a few weeks back when i said f-it and threw a standard washer behind the pulley, not even an 1/8" thick. within a 5 min drive, no high rpm it was riding the tensioner.
20210725_113417-jpg.jpg



and lately when ive been driving it starts walking off the front a few ribs lol. i found a ls1tech thread where they talk about tensioner puller for a 3800 series engine, and later an ls3 camaro tensioner pulley looks to be the same that has taller sides on it. i went ahead and ordered one
something is tilted up forcing the belt in, I would guess the tensioner, try adjusting the tensioner forward/down with a shim or something, too much and it may come off forward.
**pretty sure by adjusting the tensioner angle you can guide the belt how you want., look at the line from the balancer to the tensioner
 
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