a4ls2goat

mine got in and out shaft play within 50 miles of using it.

coltboostin

Dang. Whats on it now?

a4ls2goat

Ordered a s475 96mm t6. Should be here friday.

coltboostin

Will she fit? GTO is a tight space. Get the hammer out!

a4ls2goat

Sure will. This is for my 1st gen rx7. I sold the GTO a while back

coltboostin

Room for days!

I love that car! Sorry I am day late and a dollar short per the usual

coltboostin

IC pipes figured out-all from various pieces of scraps. Once section is even from a old Isuzu truck that has 3 inch SS exhaust that we took from the scrap yard trip back in 2005 with a good friend that is no longer with us. Fun thing about doing it sloppy is reusing parts from old builds brings back great memories. This car needs as much good Karma as it can get



I will weld this stuff up next time I have access to a TIG. Last is the exhaust-and we are ready for testing and tuning!

coltboostin

Well the first dyno visit was a minor success.

I was last in line-had 4 other (DSMs) to tune, so it was just a "dial in" session for the car.

After some idle/driving tune time to get the new moor/cam set up dialed in-we made few hits

First pull-breaking up. 100% my fault as I had never changed plugs from last season, and forgot the new set!! Oye. Hit them with brake fluid and a wire wheel.

Next pull-out of fuel, and boost seemed out of control. I was seeing 20+psi on my 15 lbs spring with no signs of the party stopping any time soon. I could turn up the base pressure but with the boost control lacking and bark breaking up under load- I decided to call it a night. So far, she made 760whp lifting at 5500. I cant give much of an impression on the street since I have not done more than a blast down the street, but I would not say this turbo is lazy by any means!

Before I go back to the dyno, I will be doing-

New plugs and wires (AZ lifetime warranty-Free.95)

Adding a second gate

Swapping out one 255 for a 340 or larger so I can safely make 850-900whp.


Video-its hard to tell in the video but it was breaking up considerably under load.

https://www.youtube.com/watch?v=hsbP...ature=youtu.be

dburt86

iTrader: (2)

this looks promising!!!

coltboostin

To address the overboost issue, I originally was going to re-work my gate entry-but I said F it and picked up another 450 Chinagate and added it with great gate priority off the up pipe.



With 15psi of spring, she now holds 15psi on gate . Took it for a test rip, and YIKES, much better than I expected after the dyno! Even with the 5.3 and big cam, its not much laggier than the twins set up-and rips pretty hard for 15psi. It may be hard to compare since my daily is 4XXwhp and auto and this is the first tie she has seen full pulls this year, but she feels as stong if not stonger than last years set up. Big differnce up top as well-you can feel the Cam carry the power well.

Still need to add pump and, address the old plugs, and wrap the DP in the bay, and its back to the dyno.

On a side note-opening my dump picked up 180 whp on the dyno! I am sure some of this was due to increased boost, but I have to impove the regular exhaust flow. I knew my cheated angle would be a restircion, bit lord I didnt know it would be that bad! Watch your angles people!

Jwooky

Curious, I know you bent the rods in the 5.7, but why did you go away from the twin setup?

I figured you would just swap out the long block.

coltboostin

I got an offer I could not refuse on the twins. Cash is always king, and I wont turn down a profit

After my first WOT sessions, I am much more encouraged by this set up and am eager to get the wick turned up!


Also a few people asked for an idle vid. Here it is. I am sorry but I literally know nothing about the cam. It was trash picked form a local shop

coltboostin

So far so good with On3's Billett 88mm. Drove it a few times this week.

She runs good. Here is a video of a 30-150 pull on gate (15psi). Dont pay attentiong to my POS tack- it lags as much as 1500 rpm up top! Need more fuel to have more fun. Still needs a lot of finishing work, but the turbo works well. Not as lazy as I would expect with a 5.3 and big cam. More to come

coltboostin

60-150 roll on, no brake boosting. It seems the extra torque is making traction more difficult.


Should give a good perspective on spool, transient, and "sound" characteristics of this turbo. If the off the shelf cast Pt88 unit is "quiet" I would have to say this one is not.

Here is the list of things I need to do before I see the track.

Flush coolant system. Current coolant looks like mud LOL. Engine must have been sitting for some time.
Wire up 2 stage boost control
Smooth out restriction in exhaust
Add more pump. See if one 450 and one 380 can fit in stock bucket or move to cheap fuel cell and twin 380's
Bump base pressure to 70psi-retune and add boost 

She feels very strong; this cam definitely carries the power well up top. I am excited to see what the difference is at similar boost levels compared to the 5.7 and twins

SLOW SEDAN

iTrader: (13)

Good to see updates on this and that its making some power! Now turn up the boost! haha

coltboostin

Its coming! We will see what I can dream up for a nearly free fuel upgrade. Does not help that I am on the beach for the next 2 weeks. Dyno day the weekend I get back home, so we will see what I can cobble together.

DirtyS30

Cants wait to see what the 88 makes

gnx7

iTrader: (28)

When you can lay 2 black stripes for 200-300ft rolling into in 4th gear.... you might be making some power

That looks fun now!

coltboostin

Thanks! Now just a matter of getting that "Jam" all under control.


Sorry for the lack of updates guys, been a busy few weeks with non car stuff. Took the Fam on Summer Vaca.





And THIS has been taking all of my time! Not much time for car antics this summer. I've been very hands on with this project, and it cant be as sloppy as the can unfortunately. The goal is "zero zip ties" LOL





What little free time I have been driving and enjoying the car even though it needs some finishing up. Take it to work quite often when its nice out. Hard for me to fix something thats not really broke.




Went to a charity Dyno day that I won shutting down at 5500 (730whp-chart going STRAIGHT up) because it was leaning out pretty hard. Found a clogged fuel filter. $4 at autozone, and we are good to go, but I still need more pump! Somewhere along the line, my diff unwelded itself (yes, it still runs fine, just one wheel peels!) and I know I need to fix it. So, not I have th opportunity to do some work.


Short list before I can take it for the FULL JAM tune session-

More pump. Min 340x2 (sourced used for $40)
Wire 2 stage boost control
Figure out overboost situation- spikes to 18+
Try to fit Mickey ET Pros 28x10.5
Fuel Filter
Plugs (still from 2014 LOL)
Address cooling. Angle radiator/Shroud/More fan


Wish List
Turbo Blanket?
GM style coolant reservoir
Fuel cell, or swirl Pot and AEM 380's


Updates soon!

Tjabo

Your diff was actually welded, and now it's open again? Or was that a joke? Lol