ecko04

First and foremost no my engine is not blown.

I am new to the boosted world, my car is actually at the shop now being tuned, getting new aluminum IC piping, etc.

Each time I login to SL it seems like another person or 2 have blown their engine. What are the most common causes of blown engines in boosted applications. I am specifically speaking in terms of the stock motor, not those pushing 20 lbs of boost on their built motors but those auto & manual running 5, 8, 10, 11 psi, etc.

Are these people tuned, bought crappy kits, pushing the limits too much (what is too much), etc.

I'm just trying to understand so that I don't make the same mistake.

Just today I login and see that rozz-tC and all4degame motors seem to be no more.

crush02342002

iTrader: (2)

well i could list a few but ill mis alot of em...lol

1. low oil pressure
2. running without proper fuel/managment
3. improper install (not tightning down or sealing vac lines)
4. over boosting (without enough fuel)
5. fuel leaks (leaving the car leaning out)
6. lean afr
7. running too hot of an ign map
8. too agressive of a tune
9. using too much rtv on the oil pan

the list goes on

crush02342002

iTrader: (2)

primary reason is lack of knowledge

ecko04

What is low oil pressure? Does the pressure not fluctuate when at idle, partial and wot?

vac lines are pretty much self sealing are they not? Using fittings and the vac lines go on top of those and usually clamped or zip tied down.

I'm not seeing the fuel leaks, i'm not sure how that happens.

I can see lean AFR but those also fluctuate. What are the ideal AFR's?

Aggressive tune, yeah I can see how that can be an issue. I thought all tuners tuned on the conservative side.

Too much RTV...i'm not sure how that is possible either. Did they just use the entire tube on the oil pan?

jsg93085

or insufficient research...

ecko04

or incorrect information in that research

TheFantasticG

Not true. Depends on what the customer wants. I had my tuner tune a ultra-conservative map for me.

ecko04

Still I doubt any customer wants a super aggressive please make my engine pop tune. That shouldn't need to be said; its pretty self explanatory. The entire purpose of the tune is so that the motor doesn't go pop.

gingles

iTrader: (1)

what the hell.....to much rtv on the oil pan?....care to explain this one crush?

crush02342002

iTrader: (2)

https://www.scionlife.com/forums/vie...035&highlight=

cory james had this issue but it wasnt his fault but the same idea applies, sealent broke off and clogged his oil pick up which in turn caused oil starvation. well that led to a blown engine...

ill explain more of em ina min

dave2610

i would say the most common issue is a ____ poor tune or none at all

NVMyTc

iTrader: (4)

X2

Most every single Blown tc i have seen has been from a crappy tune, and in 3 cases no management at all..

crush02342002

iTrader: (2)

low oil pressure due to clogged oil pick up, lack of oil, oil leak, ect

vac lines can pinch, tear, break, melt, and sometimes the wrong size was used and fits lose.....let me put it to you this way, if i were to some how have a vac line come lose from your wastgate you will over boost and thus could leed to a blown engine. also the barbed fitting on the tial wastegate if it isnt tight it will make you over boost...

ideal afrs...kinda debatable but here is what i go by....
idle=14.7
normal driving (no sudden excel)=14.7
light boost (1-5psi)=12-12.5
full boost(5-max psi)=11-11.5

ask aen and some others about fuel leaks....a leak can happen if the fuel injector isnt seated properly or if your running a return system and forget to tighten down a fuel line...not to mention road debris (it happens). this can cause a sudden lean condition..lean=boom...

Iv seen some effed up maps in the short time iv been on this site and they were all "pro tuned"...got to find a good shop that you can trust...also tuning yourself is a plus but then again you still run the risk.

dave2610

yep. seen that a bunch. plus people doing their own street tune with no knowledge or taking their cars to shops that dont know what they are doing.

crush02342002

iTrader: (2)

so realy you just need to remeber this

1. install correctly and take your time
2. double check everything
3. dont cut corners
4. use quality components
5. find a tuner you can trust
6. (more of a tip) install your gauges first and get used to the readings of your gauges before boosting...this way you have a better chance of spoting something early on when you do the turbo install.
7. dont ignore your gauges they are there for a reason

golden rule= research and understand everything you can about boosting the tc.

if you dont trust anyone of use atleast trust in TT, Dezod, P-Tuning, ect, that boost cars on the daily for info.

gingles

iTrader: (1)

wow.....i wouldnt think someone would cake their oil pan with that much gasket maker in the first place....but i do understand the concept

crush02342002

iTrader: (2)

i felt the same but in reality it doesnt take much crap to clog the oil pick up

ecko04

Like you said the gauges are there for a reason. If something is clogged the pressure would be at 0 and if there was a leak there would be a constant degradation of pressure so if you gas it some gas you would still not see if rise which should be an immediate indication of a problem, bt like you said people ignore the gauges.

crush02342002

iTrader: (2)

also not everyone runs an oil pressure gauge, some opt for an egt instead...so by the time the idiot light comes on its too late.

ecko04

oh, I guess that's something I picked up from reading. I run an oil pressure, AFR and boost gauge. I monitor water temp from the scan gauge.