Zoom Zoom Boom again?!? WTF!

[btstarcher]

I think I just blew my 2nd engine a little while ago. This time the smoke smelled sweet though, like antifreeze. Also there isn't lots of oil everywhere, and when I unscrewed the oil cap it reeks of fuel. In any case I am pretty well fucked.

[Chimmike]

headgasket this time?

[08.5MS3]

Head gasket?

[btstarcher]

I was thinking the same thing but there was an audible "boom" and what sounded like gravel tumbling around after it...

[jonspeed3]

Another one bites the dust. :x

Makes me scared of my car when i return stateside.

[smoogs12]

Ugh.

Good luck man. I hope everything gets sorted.

Tapa

[helmetface]

@jonspeed3 is your signature(s) big enough holmes?

[jonspeed3]

@helmetfail
nah.

[Butterybunz]

wot? or just cruising?

[btstarcher]

Cruising. I did give it a little gas, but maybe half throttle. Maybe a little more, but not WOT.

[btstarcher]

I'm tempted to push it down the hill and into these trees...LOL

[Butterybunz]

what gear? I have been getting a lot of part throttle knock, and after looking it seems like its really common.

[btstarcher]

6th...at around 80 LOL. I figured it would be safe because my RPM's weren't too low and it wasn't WOT. I haven't been seeing much knock on my 50/50 e85 tune, partial or otherwise. But I will check when I get home. I often log my trips to work and datalogged just last night.

[G26]

Seems you gen 1's get a lot of part throttle kr, anyone ever take a log of this to see why?

Only part throttle KR I've seen is like 0.50* for a blip.

[smoogs12]

Originally Posted by G26 Seems you gen 1's get a lot of part throttle kr, anyone ever take a log of this to see why? Only part throttle KR I've seen is like 0.50* for a blip.

I get assloads of pt kr in high gears cruising on the highway. Mostly on tip in.
No wot kr though.

Never gotten it it a log but I easily could if you wanted to see.

Tapa

[btstarcher]

I do as well. Will post a log if I remember too...so somebody remind me.

[Stealth01]

Yeah, I get a lot of KR on the highway, when cruising in 6th. If I drop to 5th, it goes away.

Sorry, man. Makes me want to trade the car.

[tddvrrn]

shitty man, that sucks. sorry to hear it. i'm very curious to see what this turns out to be.

if the engine was blown, wouldn't the oil be outside of the engine? maybe it was just the headgasket, like has been suggested..

gud luk.

[G26]

Originally Posted by smoogs12 I get assloads of pt kr in high gears cruising on the highway. Mostly on tip in. No wot kr though. Never gotten it it a log but I easily could if you wanted to see. Tapa

Weird, I don't think us gen 2's get any KR just cruising lol.

[btstarcher]

Well there is oil outside the engine. Just not as much as last time. Last time it sprayed everywhere, even under the car and onto the hatch. I mean everything was covered. This isn't as spectacular, I feel a little let down. There's some under the car, I could see it when I pushed it backwards to see if it was leaking. Maybe a couple splashes here and there.

[smoogs12]

@btstarcher what was the cause of your last blown engine?

[btstarcher]

My own douchebaggery. Is that spelled right?

[btstarcher]

Basically modding without knowledge or common sense. I had a wonderful device known as a Standback, and I just wanted more boost. Sooooooo.....I increased the boost. I already had my gutted downpipe and testpipe; I figured surely this fine turbocharger can give me 22psi. :-)

[08.5MS3]

Not to deviate too far off-topic, but in regards to PT knock on Gen1's; many have said it's for fuel economy purposes.

[smoogs12]

Originally Posted by 08.5MS3 Not to deviate too far off-topic, but in regards to PT knock on Gen1's; many have said it's for fuel economy purposes.

Yeah thats my understanding as well.

Still, its pretty disconcerting none the less. I have a hard time convincing myself that 7.1 kr is "just something that happens" lol.

[G26]

Originally Posted by smoogs12 Yeah thats my understanding as well. Still, its pretty disconcerting none the less. I have a hard time convincing myself that 7.1 kr is "just something that happens" lol.

Thats what I am starting to think also, as it seems most of these engines are blowing during this.

Considering the gen 2 does not show part throttle KR, this might be worth looking into.

[dpolseno41]

7.1?! I get paranoid seeing .3 part throttle KR hahaha

[smoogs12]

Originally Posted by G26 Thats what I am starting to think also, as it seems most of these engines are blowing during this. Considering the gen 2 does not show part throttle KR, this might be worth looking into.

Do you think its just another change in ecu logic from gen 1 to gen 2?


We really need to just make a new thread. We're thread jacking big time haha.

[08.5MS3]

Originally Posted by smoogs12 Yeah thats my understanding as well. Still, its pretty disconcerting none the less. I have a hard time convincing myself that 7.1 kr is "just something that happens" lol.

Agree.

[maxwella]

best wishes to us all
.
Could someone post the PT knock thread link here?

[Butterybunz]

I see up to 5 degress of part throttle knock on any given day daily driving the car. 2008 ms3 mods: sf intake and cobb stage 1 ots tune

[exentix]

so glad i am not the only one getting pt knock. i get so freaking paranoid. it does seem to be on tip in, usually only 5th and 6th gear. i thought it was partly due to bad gas, stock heat range plugs. i have other plugs i wanted to put in today to see if it goes away. and i got different gas, plus i am gonna be running some e85 soon. hopefully that gets rid of it.

[Stealth01]

Originally Posted by exentix so glad i am not the only one getting pt knock. i get so freaking paranoid. it does seem to be on tip in, usually only 5th and 6th gear. i thought it was partly due to bad gas, stock heat range plugs. i have other plugs i wanted to put in today to see if it goes away. and i got different gas, plus i am gonna be running some e85 soon. hopefully that gets rid of it.

@Lex has experimented with changing plugs and found it doesn't make a significant difference in KR. I'd try the gas first. I'm going to do that too. I think I'll also install my HALOs and TIGs and see if that helps.

[Colin1337]

When I was using the Cobb ots tunes, I was seeing 7kr just cruising around. Now that I have a real tune, I never see knock higher than .3kr and that's at wot and is rare to even see that.


Sent via carrier pigeon

[exentix]

Originally Posted by Stealth01 @Lex has experimented with changing plugs and found it doesn't make a significant difference in KR. I'd try the gas first. I'm going to do that too. I think I'll also install my HALOs and TIGs and see if that helps.

well i have them to install anyway as i will be upping boost and start tuning as soon as this downpipe goes in this weekend. im gonna be doing a pump 93 tune and a 93/e85 mix tune. i also have an intake mani tig to install, not sure how much it will help. i just find it odd that low gears have maybe .3 knock but higher gears it comes back with a vengance.

[Stealth01]

Originally Posted by exentix i just find it odd that low gears have maybe .3 knock but higher gears it comes back with a vengance.

Yeah, I agree. Nothing's as disconcerting as cruising along at 80MPH and seeing 5-6 degrees of KR out of nowhere. Makes a one-hour trip to Denver more stressful than it should be.

[exentix]

Originally Posted by Stealth01 Yeah, I agree. Nothing's as disconcerting as cruising along at 80MPH and seeing 5-6 degrees of KR out of nowhere. Makes a one-hour trip to Denver more stressful than it should be.

yea i just got back from a 3.5 hour trip to philadelphia lol

[btstarcher]

Originally Posted by exentix so glad i am not the only one getting pt knock. i get so freaking paranoid. it does seem to be on tip in, usually only 5th and 6th gear. i thought it was partly due to bad gas, stock heat range plugs. i have other plugs i wanted to put in today to see if it goes away. and i got different gas, plus i am gonna be running some e85 soon. hopefully that gets rid of it.

I just looked at my cruising datalog with my current map; there is a pattern to the partial throttle KR. It only happened in the lower RPM's (between 2700 and 3200) and under load around .4. But it was random; there are plenty of similar instances where timing was not pulled.

This is my 50/50 summer mix of e85 map btw. No WOT knock to speak of.

[Stealth01]

Originally Posted by btstarcher I just looked at my cruising datalog with my current map; there is a pattern to the partial throttle KR. It only happened in the lower RPM's (between 2700 and 3200) and under load around .4. But it was random; there are plenty of similar instances where timing was not pulled. This is my 50/50 summer mix of e85 map btw. No WOT knock to speak of.

Yep, the only real WOT KR I get is false knock, from noisy shit in my engine bay.

[Ray Danger 2020]

Originally Posted by smoogs12 Yeah thats my understanding as well. Still, its pretty disconcerting none the less. I have a hard time convincing myself that 7.1 kr is "just something that happens" lol.

7.1! Holy Fuckleberries!! the most I've ever seen on my car is like a 1.5. Anyway, PT knock on our cars happens because in closed loop cruising on the highway, the car advances the timing until it hears knock, then backs it off just a tad to increase fuel economy. Also, I get some PT knock in my genpu (only like .3-.4 shit), but I just attribute it to engine noise that the car thinks is knock.