Project Family Truckster: 2wd Conversion Turbo LSx Blazer Build

[ColoradoK5]

Cool Video! cant wait to see what you do next love what you are doing with the blazer

[whitels1]

Great job with the Blazer!

[timmytimm3]

Great vid! Mexico is much nicer than I thought.

What a great road to do some testing

[lyrikz]

Awesome truck man.

[softballnrd27]

What size are the wheels? 18x?

[72Blazing]

What rate coilover springs did you end up going with?
I just received my No Limit wide ride and Fat Bar setup and
Rob sent me 200 and 450s.

[Wasted Income]

Originally Posted by softballnrd27

What size are the wheels? 18x?

18x9 all the way around.

Originally Posted by 72Blazing

What rate coilover springs did you end up going with?
I just received my No Limit wide ride and Fat Bar setup and
Rob sent me 200 and 450s.

For the rear, i ended up going with a 375 lb/in spring....but your shock length and location will affect how much spring rate you need.

I also have 450s in the front, but I think it needs more. I have my preload adjuster cranked TIGHT to bring the front end up, so it's not so raked out. But mine started out as a 4x4, so the frame has that extra 1" kick to it that I'm fighting.

[72Blazing]

Mine was a 4x4 also. Rob said he would exchange the springs if I needed something
different.

[Wasted Income]

Well, an update.

Found out what all the racket in the engine was....

4 bent rods, 5 pistons with broke ring lands, and one piston hitting the crank. lol. Was still running pretty good up until I tore it out of the truck.

[Hart_Rod]

Heat?

[Wasted Income]

Detonation.

[Hart_Rod]

Originally Posted by Wasted Income

Detonation.

Ouch!

[Tom Vogel]

You might want to install a wideband O2 sensor on that new motor. Shes way leanin out.

[Wasted Income]

Originally Posted by Tom Vogel

You might want to install a wideband O2 sensor on that new motor. Shes way leanin out.

Lol, ok.

You mean this here wideband?



Trust me when I say, it was most certainly not too lean.

[lt155ruck]

Lol. I think perhaps it might be a question of the owner not wanting to loose in some of those exhibitions of speed in "Mexico" ?? Haha you have to enjoy the giggle factor. .. even if it costs an ls motor.

[Wasted Income]

Originally Posted by lt155ruck

Lol. I think perhaps it might be a question of the owner not wanting to loose in some of those exhibitions of speed in "Mexico" ?? Haha you have to enjoy the giggle factor. .. even if it costs an ls motor.

This guy. This guy gets it! haha

[lt155ruck]

Originally Posted by Wasted Income

This guy. This guy gets it! haha

LOL Next short block please....maybe we should dial the boost back..... NAH more is always better

[Tom Vogel]

So whats your CR and boost level?

[Wasted Income]

Originally Posted by lt155ruck

LOL Next short block please....maybe we should dial the boost back..... NAH more is always better

Hey, what can I say....I'm greedy

Originally Posted by Tom Vogel

So whats your CR and boost level?

CR before or after the kustom connecting rods mod?

Compression is 9.6:1, boost level was 15-16 psi with some spikes to 18 psi at the shifts....
I mentioned it in another thread, but "boost level" means nothing. 20 psi from a china ebay 60mm turbo is not the same as 20 psi from a PT106.

I'll probably start piecing together a forged shortblock for it, but for now, in goes another junkyard 6.0.

[Tom Vogel]

As you probably know, predetonation has nothing to do with the strength of your bottom end and everything to do with CR, boost level and fuel delivery. Thats a relatively high CR and alot of boost. You need proper Fuel delivery and timing or it will be quick curtains all over again... pronto. An air to air intercooler would make a big difference as well. Or...How about a methanol injection system?
Even if you dont care about grenading the motor, you will get a Huge performance increase if you take care of the predetonation.

[Wasted Income]

Originally Posted by Tom Vogel

As you probably know, predetonation has nothing to do with the strength of your bottom end and everything to do with CR, boost level and fuel delivery. Thats a relatively high CR and alot of boost. You need proper Fuel delivery and timing or it will be quick curtains all over again... pronto. An air to air intercooler would make a big difference as well. Or...How about a methanol injection system?
Even if you dont care about grenading the motor, you will get a Huge performance increase if you take care of the predetonation.

Tom, I appreciate the advice, however I've already got most of it covered.

Fuel delivery is up to the task. I have a Fuelab 41402 160 gph pump, fed by a -10 sumped tank, which splits to two -8 lines before the fuel rail, and 80 lb/hr injectors. It never...never...went lean. I have lots of logs showing that the fuel system is capable of supplying the correct fuel pressure and AFR even at 16 psi and 7000 rpm.

I don't have room for an A2A intercooler, with my AC stuff in the way. I do already have a dual nozzle meth injection setup on it.
I circled one nozzle, and there is another one on the back side of the pipe that you can't see. I am also running E85.


I plan to upgrade the bottom end, since high cylinder pressure, whether from big hp, or detonation, bends rods. The stock cast pistons also don't give much room for error if you get a little too greedy or get some bad gas or something.

I've built and ran two other big turbo LS motors in the past, and never broke anything with them. Once I hurt this one early on, I didn't really care about it anymore, so I just kept turning up the wick on it to see what it would take before it came unglued...which it never truly did. Call it a science experiment

[Tom Vogel]

I am still betting on predetonation. Mighty surprising with E85 Ill admit. Do you have a custom tune on it? If you dont, Id get one. There should be someone close enough to you with a dyno and flash capabilities.. not cheap, but thats what I did with my Mustang and that did the trick for me.

[Wasted Income]

I own a commercial version of EFI Live, and have always tuned my own stuff on the street and on the track.

The Blazer however, has a Megasquirt ecu on it, and does not need to be "flashed" in the traditional sense. I can tweak fueling, timing, boost values on the fly and it changes immediately.

Just a friendly heads up, but there is no such thing as "predetonation". I think you're combining two different things.....pre-ignition, and detonation.

http://en.wikipedia.org/wiki/Engine_knocking

[Tom Vogel]

I can tweak fueling, timing, boost values on the fly and it changes immediately.
OK then

Just a friendly heads up, but there is no such thing as "predetonation". I think you're combining two different things.....pre-ignition, and detonation.

I stand corected.

http://en.wikipedia.org/wiki/Engine_knocking[/QUOTE]

[72Blazing]

Lots of NMCA and NMRA racers running 12-1 plus compression with high boost levels(30psi+)
With the stock bottom end there could have been any number of contributing factors.
I am sure you will have one hell of a beast when you are done!