Turtle64b's Stillen Build Thread

[Jayhovah]

Originally Posted by turtle64b

Gotta keep lookin' on the bright side!!

The bright side is that fuel sprayed all over your hot manifolds and you didn't lose the build to an engine fire. =)

This is a small price to pay for that miracle

[ScottM]

It hurts reading this. Looking on the bright side and gaining experience is the best way to view it. I hope you get this sorted out soon man

[Bird]

Man, you've got me breaking into a sweat now, and I am just a desk jockey behind a keyboard. Only the brave! Good luck!

[MoulaZ]

Originally Posted by turtle64b

There are some 3/16"ish spacers where the injectors meet the engine to ensure the injectors remain firmly in the rail and in the engine. If you do not install them, fuel pressure can force the injector further than desired into the block and lead to the top developing a gap between the injector and the rail. After a little cooldown, I felt the inboard side of the injector at the rail and I could feel the o-ring. Also, significant spray from between the rail and the injector upon priming the fuel pump by turning the ignition "ON"

If you look at the picture, the spacer is actually on the injector ("top" or engine side of the injector) at this point. How they got removed is beyond me...

Checked mine, looks like they were on there so in the clear. Phew.

[turtle64b]

Supercharger is on the way back from Vortech and should be here Friday! Minor rebuild with the Si trim upgrade (thanks Topgunz for really twisting my arm on that one haha ) As soon as it gets back, I'll have it on and oiled and hopefully be able to take her out for a Friday night cruise

[Jayhovah]

Originally Posted by turtle64b

Supercharger is on the way back from Vortech and should be here Friday! Minor rebuild with the Si trim upgrade (thanks Topgunz for really twisting my arm on that one haha ) As soon as it gets back, I'll have it on and oiled and hopefully be able to take her out for a Friday night cruise

Long time coming!

Sent from my Nexus 6P using Tapatalk

[BOLIO 671]

Originally Posted by turtle64b

Supercharger is on the way back from Vortech and should be here Friday! Minor rebuild with the Si trim upgrade (thanks Topgunz for really twisting my arm on that one haha ) As soon as it gets back, I'll have it on and oiled and hopefully be able to take her out for a Friday night cruise

Awesome..how much did the bearings and impeller upgrade run u?

[turtle64b]

Got the SC back a day early!!! Slapped it on, refilled all the fluids and turned'er over! That marbly sound seems to be coming back..... Which makes me wonder, how tight do you tension the small SC belt? Could radial pressure cause the imbalance leading to that sound? Just spitballing a little here. It is definitely quieter than the first time!

[TopgunZ]

YES! Do not overtighten than a 70* twist. I had mine at about 90* because when i went to 45 you could hear the bearings being stressed. Your marbles.

[turtle64b]

Originally Posted by TopgunZ

YES! Do not overtighten than a 70* twist. I had mine at about 90* because when i went to 45 you could hear the bearings being stressed. Your marbles.

I don't really understand this, I'm sorry. Is this 70 degrees turn on the tensioner? If so, where is your starting point (i.e. 70 degrees from the point you can no longer push up on it yourself?)?

In hindsight, this may have been what caused the very original and subsequent failure of the bearings. I refuse to repeat that mistake!!

At this point, I feel like backing it off until belt slippage occurs and then tightening from there might be my best bet.

Thanks!!

Edit: Any tool recommendations for tightening/loosening the tension pulley from the top with everything installed? I am going to run to Lowes for a 9/16 crowfoot today, but I was curious if you guys had any tools that worked really well from the top.

[turtle64b]

If you guys wouldn't mind taking a look at the last three videos and tell me what you think about SC belt tension/sound I'd appreciate it!

https://goo.gl/photos/6wexurgWYzweWzYw7

[turtle64b]

Put down 410whp/310wtq before they thought I ran lean and wouldn't pull it again... AFRs solid, no higher than 12.03, so I think they might have had an issue with the probe they were using for AFRs. I was hoping for a little higher, but I got the WOT data for Seb at SpecialtyZ to iron out the top end and maybe find a few more horses. It's looking like time to pick up the 9lb pulley

[TopgunZ]

No way. Your tuner is off. There is zero chance of running lean at 410whp with that fuel setup. I was running without a rfs and made 533whp on E85! Which takes 30% more fuel!

Plus those mods should have you deep into the 400s, not just barely over. Something is wrong.

[overtureZ]

This is sounding like my build O.o

[turtle64b]

I sent the data from my 2 dyno runs to Sebastian, so I anticipate good things!

Woo from the forum here lives out by me and said he was running ~447 on a similar setup without fuel mods (other than bigger injectors, so I was hoping for that at least!
EDIT: I believe he has the F.I. exhaust which is a little bigger than my Borla w/ test pipes. This may contribute to lower numbers.

Dude at the dyno day also said he let off at the end because he thought it was running lean based on their probe. Again, triple checking the data, No AFR's on either bank above 12.5 until the gas was let off and my hp/tq graphs looked almost identical throughout the ROM range despite me allegedly running lean 2.5k RPM sooner on the second run. It was a dyno day even and not a tuning session, so I can understand the conservative approach to not running the car again given the data they could see.

I didn't open the data files until I got home to scour them for any issues. I'm not confident in my ability to tune a car, but I am confident in my ability to find and diagnose a lean condition based on pedal position, AFRs, MAF voltage, injector cycles, etc., if it exists, and I didn't see it.

I'm looking forward to the next iteration of my tune and I can't say enough good things about Sebastian so far! Based on the 310wtq number though, I feel safe moving up to the 9 pounder, if I can find one these days that is haha!

Thank you guys for watching over me!! Hopefully more to come!

-Brett