What negative things can happen to a turbo'd engine?

[mr_wizard]

As long as one keeps its lubes cared for on a regular basis I think it would be ok right? Or do the rods and such tend to bend? My engine is healthy, but has alot of miles. 170k actually, but has awesome compression. Should I turbo?

[Craving4Boost]

i hope your not asking us so if we say yes and you blow your engine you can blame it on us

if you have good compression then go for it if you want too. some people on this forum have way more than you and are still running their ka-t's.

but please do a big search and read the stickies.

damn i should post up a thread "What negative things can happen to a Turbo'd guys LIFE!" no clothes...im starving...im growing white hair from workin so hard...dont go out with friends much anymore...annddd im 18 years lol....boost bby..gotta love it

[crzycav86]

Go for it. It's basically all in the tuning. If you have a good sized turbo, fmic, and enough fuel, you can have a pretty reliable kat. Just don't go overboard and you'll be fine.

[scheffler]

It is a lot of work time and money to do it right but well worth it if you ask me.

[lilskyline240]

damn i should post up a thread "What negative things can happen to a Turbo'd guys LIFE!" no clothes...im starving...im growing white hair from workin so hard...dont go out with friends much anymore...annddd im 18 years lol....boost bby..gotta love it

HAHHAHAH...so true

[nissanfanatic]

HAHHAHAH...so true

It really is....lol

[Kenrik]

As long as one keeps its lubes cared for on a regular basis I think it would be ok right? Or do the rods and such tend to bend? My engine is healthy, but has alot of miles. 170k actually, but has awesome compression. Should I turbo?

Question: negative things can happen to a turbo'd engine?

Answer: something like this.... not a KA but you get the idea

[fiznat]

Too much power on parts you dont replace will eventually cause them to be crunched up and ejected from the block.

Poor tuning can cause ANY turbo system to go bye bye within a matter of seconds.

Clutches + Tires tend to wear out quicker than the manufacturer had originally intended

The lesson is: if you pick a power level that you can afford, things will be pretty good. If you try to stretch the limits you will end up with parts on the highway.

[lilskyline240]

[DammitBobby]

Well said!

The lesson is: if you pick a power level that you can afford, things will be pretty good. If you try to stretch the limits you will end up with parts on the highway.

[Jookmasta]

so to answer ur question, timing. timing can be advanced to where u run too much timing, engine knocks, and boom. the key is tuning. no way around it. if ur compression is solid and the other engine things are working fine, go for it. the car has to be tuned properly for it to last as long as possible.
Modified by Jookmasta at 9:56 PM 11/2/2005

[C-Kwik]

so to answer ur question, timing. timing can be advanced to where u run to lean, engine knocks, and boom. the key is tuning. no way around it. if ur compression is solid and the other engine things are working fine, go for it. the car has to be tuned properly for it to last as long as possible.

??? How does timing ever cause an engine to run lean? Advancing timing only increases cylinder pressure and heat. Which leads to detonation. Running lean can also cause a hotter combustion, which can cause detonation. But timing does not affect the A/F ratio. That is purely a function of air being sucked in and fuel being squirted by the injectors...

[Jookmasta]

my mistake. i will edit the post. thats what i get for responding to a post and looking at alpha and beta thalassemia at the same time................med school owns everyone.

[MarkEmark]

Very bad things can happened to turbocharged engines, even when they're running well, well-tuned, and freshly built. Stock rods blow, I wouldn't trust them at serious power levels.

Here's what's left of my $3700 engine with 1000 miles on it







Sorry, couldn't resist

[180sx]

u crazy man!!! timing won't affect a/f fcuk yah it does

more advanced timing as u sad makes more pressure and hotter what does that mean ??? i wonder learn rules of combastion . how u think they tune cars crank up timing increase fuel . and thus retardint timing takes away power and decreases fuel needed . add fuel and timing retards becouse too much fuel takes longer to ignite . thats why if u get to fire at 0 degree when piston squizes all that air to max and u have fuel at lambda u get max power.

same with spark the more advanced timing gets und more compressed air gets bigger spark needed to create explosion

[Titan]

i wonder learn rules of combastion .

Learn the rules of spelling; grammar and sentence structure wouldn't hurt either.

[deviousKA]

What negative things can happen to a turbo'd engine?

It can be taken advantage of by a lower powered NA engine on the track

Sorry, I just had to say it.

[jamied311]

.

[crzycav86]

u crazy man!!! timing won't affect a/f fcuk yah it does

more advanced timing as u sad makes more pressure and hotter what does that mean ??? i wonder learn rules of combastion . how u think they tune cars crank up timing increase fuel . and thus retardint timing takes away power and decreases fuel needed . add fuel and timing retards becouse too much fuel takes longer to ignite . thats why if u get to fire at 0 degree when piston squizes all that air to max and u have fuel at lambda u get max power.

same with spark the more advanced timing gets und more compressed air gets bigger spark needed to create explosion

Huh? Your post makes zero sense. But based on what I could barely interpret(the first sentence)... I'm gonna say you're wrong

[nissanfanatic]

Timing can affect Air/Fuel ratio readings.

Much of the combustion process relies on heat created by pressure. Boost+CR makes the heat necessary to burn fuel rapidly. Namely why higher octane fuel is needed for higher boost/higher CR engines. If timing is retarded too far, PCP will occur past optimal crankshaft degree thus not creating enough heat to completely burn the charge provided. Hence power loss. This means there is oxygen left over from combustion. Now how does a wideband work? It detects oxygen in the exhaust stream. So, too much retard and you will get lean readings. As you advance, you may start to see Richer readings as less oxygen will be present due to it being used.

Also, misfires will show up as lean readings as well. So, for any of you that see "LEAN" when you get hesitation or hit that "brick wall", automatically check ignition system. Misfire means that most-if-not-all of the charge was dumped right out. What happens? Wideband picks up a shat-load of straight air. So you get a "LEAN" reading.

Hope that helps. Please correct anythign that you think isn't correct. Even if you aren't sure, post it up because a lot of what I posted was pretty much theory/information I read.

[180sx]

i am getting off topic but 2 THINGS 1 titan is this english 101 or ka-t forum ? by the way english is my 4th language and i am still learning as you can seeand have been for past 3years , how many languages u speak before u gonna ***** about my grammer

2 my reply was to c-kwick about a/f ratios at increased timing . I hit reply instead of quote

and crzy 86 yah if u think i am wrong based on my first few words than why don't u go crank up ur timing more by more i mean all the way and see what happens . once u come back with blown motor and cause was detonation , becouse enough fuel wasn't added to compensate for more agressive timing ...than will see who was wrong

iam out

[Chezedik]

why woudn't a misfire cause a rich condition on the wideband since a ton of unburnt fuel would pass through too?

[Titan]

1 titan is this english 101 or ka-t forum ? by the way english is my 4th language and i am still learning as you can seeand have been for past 3years , how many languages u speak before u gonna ***** about my grammer

I speak 3 languages actually; English, Polish, and French. However, I am not going to get in a pissing match with you.

This isn't English 101, but if people cannot understand what you are trying to say, you may as well be talking in a foreign language. Therefore, there MUST be some English comprehension, regardless what the topic of the forum may be.

I fully realize how difficult it is to learn a new language, especially in later years; I've done it myself. However, there are certain things that are common to all languages, such as punctuation and run-on sentences. All I'm asking for is a little more effort given to the context of your post, as I am not the only one here having difficulties understanding you.

[C-Kwik]

Timing can affect Air/Fuel ratio readings.

Readings are one thing. But the actual air/fuel does not get affected. And not to the extent you might think. You'ld actually need a 4 gas analyzer to detect the changes in exhaust gas content to see the total effects of timing changes.

Much of the combustion process relies on heat created by pressure. Boost+CR makes the heat necessary to burn fuel rapidly. Namely why higher octane fuel is needed for higher boost/higher CR engines. If timing is retarded too far, PCP will occur past optimal crankshaft degree thus not creating enough heat to completely burn the charge provided. Hence power loss. This means there is oxygen left over from combustion. Now how does a wideband work? It detects oxygen in the exhaust stream. So, too much retard and you will get lean readings. As you advance, you may start to see Richer readings as less oxygen will be present due to it being used.

There will actually be plenty of time for the mixture to burn. In fact too much retard will cause some of the mixture to burn in the exhaust system. Depending on where in the exhaust stream the measurement is taken, it may give inaccurate measurements of the actual A/F. The A/F ratio is the actual air to fuel ratio. Getting inaccurate readings due to conditions has nothing to do with what the actual A/F ratios are.

Also, misfires will show up as lean readings as well. So, for any of you that see "LEAN" when you get hesitation or hit that "brick wall", automatically check ignition system. Misfire means that most-if-not-all of the charge was dumped right out. What happens? Wideband picks up a shat-load of straight air. So you get a "LEAN" reading.

Misfires are an entirely different beast altogether. Keep in mind the context of the post that sparked this. He had said the motor would run lean and detonate. Even if the timing caused the A/F reading on a meter to show lean, the actual A/F would be independent of the timing. The motor is still geting the same amount of fuel and air.