denmah

iTrader: (2)

my first track outing yesterday, some struggles, then a 11.20 @122 on 7psi, then a talking too, then a blown motor, watch the video to see what all hapened

headed out





7psi


too fast young man...
but sir this is as slow as i can go


not the first or last trailer ride home lol


video of first track outing

black06g85

iTrader: (6)

well damn man, least ya got some runs out of it before it kaboom'd.

Bad Apache

That sucks. But you've been there before. For your sake, I'm really hoping you find a definitive cause for the boost spike. Unknown are the worst.

408GT

iTrader: (2)

That sucks man. Hope it isn't hurt too bad.

aggie91

Hope it you can find the issue with the boost spike and get us a report back! Hopefully the emgine is not in horrible shape...

douglee25

I'm curious for sure. Somehow that WG didn't open!

D-WAKE

Did it feel like a rocket @30psi? I'm curious what power it makes at that PSI.

Photochop

iTrader: (74)

Man, thats rough. Curious to see what caused that in the controller.

douglee25

You're using a MAC valve for your boost control, correct? If so, could also be a faulty solenoid/valve.

Mo6893

Ka-bewm.

denmah

iTrader: (2)

its gone LOL
im sure ill find holes in the block when i get it out

denmah

iTrader: (2)

it felt like catastrophic failure lol

69-chvl

iTrader: (11)

If you dont see oil everywhere that's a great sign!

SLOW SEDAN

iTrader: (13)

Shouldn't the squirt be setup to save the engine in the event of overboost? With Holley it's quick to pull timing, keep A/F in check, and dump the gates if an event like that happened. And I've had it happen when a wastegate line called it quits and she saw 32psi. But I drove it home thanks to Holley, stock ECM would have blown up with a quickness!

twinturbo496

iTrader: (2)

MS3 Gold has protection for Boost, AFR, Fuel Pressure, Oil Pressure, Low voltage....

He disabled the protection...

69-chvl

iTrader: (11)

This is a good lesson for all of us...at the very top of my timing table I put 0* just in case things get away from me.

Tjabo

I lost a motor using MS3 one time because I didn't have my over-boost protections set aggressively enough. When it hit (because I melted a wastegate line), I thought it was something else, and I just kept getting on it again. Pretty soon the motor popped, because even though the overboost protection was shutting it down, boost is building when it gets shut down, and it spikes real hard.

What I learned was to make sure that overboost cut is set to force me to get completely out of the throttle and let the RPMs go down very low before it will reset and allow acceleration again. All of these parameters are adjustable in MegaSquirts that have overboost protection or AFR protection.

I found that when I was in a mood to make boost, I was too stupid to take my foot completely out of the gas unless the protection method simply shut me completely down. Learned my lesson the hard way. Lol...

callys

iTrader: (2)

Don't know if this ever got answered but it looks like it is, or is a copy of, the KB Racing turbo log

denmah

iTrader: (2)

i have completely dusted motors without a drop on the ground so, thats not a good theory lol

correct its a KB style manifold, or trick performance style manifold, or any of the other 10 places that make em.

its a log that is fed from the other side
i have full pictures of the turbo kit posted somewhere deep in this thread

probably hard to find so here

Attachment 721776

Attachment 721777

gsteele

The patience you exhibit in being able to answer this question over and over is epic. Hats off to you.