flames out the exhaust
#61
Originally Posted by ScionizedRide
Originally Posted by draxcaliber
alright, my friend told me it is when you have alot of backpressure in your exhaust. are you still on stock exhaust? i guess that might be something that contributes.
#62
Originally Posted by Guru
As long as your velocity doesn't slow down appreciably (which it shouldn't on a well designed setup) there should be no downside.
That IS where the problem is. The 3 inch diameter is allowing the exhaust gases to cool to much. Hence loss of tQ numbers for any of the cars with 350 and below whp. Which is pretty much 90% of the cars on here.
#63
Originally Posted by Mr_Meaty
manifold design plays a part as well...el vs. log.
Man, I remember seeing that vid...if that was my dyno, I'd be ____ed! Why the hell would you launch like that on a dyno?
Man, I remember seeing that vid...if that was my dyno, I'd be ____ed! Why the hell would you launch like that on a dyno?
1/4 mile simulation. Some dyno's have it.
#64
hmmm....never heard of it, but I'll take your word for it.
Good enough for me.
Oh, and aen, that topic has been discussed in lenght before. a log style mani is usually shorter so allows for quicker spooling, but the unequal lenght runners caues turbulance, wheras an EL mani (usually longer runners) have a slightly slower spool but the equal lengh runner allow for smooth deliver of air flow to the turbine allowing for a smoother HP/Tq curve and ultimatley, more power, and i beleive HP builds more exponentially then TQ, which is why a good flowing EL mani will produce more HP then TQ after a certain PSI level.
After this.... phil>hieu!
Good enough for me.
Oh, and aen, that topic has been discussed in lenght before. a log style mani is usually shorter so allows for quicker spooling, but the unequal lenght runners caues turbulance, wheras an EL mani (usually longer runners) have a slightly slower spool but the equal lengh runner allow for smooth deliver of air flow to the turbine allowing for a smoother HP/Tq curve and ultimatley, more power, and i beleive HP builds more exponentially then TQ, which is why a good flowing EL mani will produce more HP then TQ after a certain PSI level.
After this.... phil>hieu!
#66
hieu = already knew that, just wanted elaboration to solidify his theories...
i dunno about you but i do recall going at this already, hence the log manifold and big turbo i have. =|
60-1 turbo, 70 trim. benifit from a 3 inch exhaust?
i dunno about you but i do recall going at this already, hence the log manifold and big turbo i have. =|
60-1 turbo, 70 trim. benifit from a 3 inch exhaust?
#68
Originally Posted by sciontcnj
i dont know how people can say you lose trq...i mean the dynos show that you gain 7 foot lbs as far as i saw
Link? The dyno I saw showed a significantly lower tQ number compared to other tC's running the same boost and HP #'s, but having a 2.5 inch exhaust instead.
#69
Yeah, aen, your larger turbo is compensating for your log mani, but untill we get that dynoed, we won't see exactly where power comes on and what not. And if you switched to an EL mani, you would get more, smoother power.
sciontcnj: we aerent saying that you LOSE tq, you just build more HP then tq. the stock tc motor has a little more tq then hp...turbos with log manis on our motors have higher tq then hp, and those with el manis (with enough psi) have higher hp then tq.
What does any of this have to do with flames out the exhaust?
sciontcnj: we aerent saying that you LOSE tq, you just build more HP then tq. the stock tc motor has a little more tq then hp...turbos with log manis on our motors have higher tq then hp, and those with el manis (with enough psi) have higher hp then tq.
What does any of this have to do with flames out the exhaust?
#72
Originally Posted by Mr_Meaty
Yeah, aen, your larger turbo is compensating for your log mani, but untill we get that dynoed, we won't see exactly where power comes on and what not. And if you switched to an EL mani, you would get more, smoother power.
sciontcnj: we aerent saying that you LOSE tq, you just build more HP then tq. the stock tc motor has a little more tq then hp...turbos with log manis on our motors have higher tq then hp, and those with el manis (with enough psi) have higher hp then tq.
What does any of this have to do with flames out the exhaust?
sciontcnj: we aerent saying that you LOSE tq, you just build more HP then tq. the stock tc motor has a little more tq then hp...turbos with log manis on our motors have higher tq then hp, and those with el manis (with enough psi) have higher hp then tq.
What does any of this have to do with flames out the exhaust?
#74
3 inch exhaust, EQ manifold, GT37 turbo and I have 340whp and 346wtq....
3 inch FTW
I pop flames too. If you watch my youtube video you can hear it pop while shifting in the 60-100 run.
My brother shoots flames out of the QTP cutout which looks hot as hell at night
3 inch FTW
I pop flames too. If you watch my youtube video you can hear it pop while shifting in the 60-100 run.
My brother shoots flames out of the QTP cutout which looks hot as hell at night
#75
a lot of turbo cars flame on shifts cause they are alittle rich, evo's are really bad for it since they are pig rich from the factory, but running 10psi u probably have the horsepower to run at least a 2.75-3.0" exhaust
#76
Originally Posted by Guru
05-06 Tc's peak power point is only 5500 RPM with stock camshafts and compression ratio. 07-08's peak later at 6000 RPM due to changes in the camshaft profile among other minor things. That peak power point changes little but the torque peak can move around on you based on spool up characteristics of the turbine used.
#80
lol I know this is old and all but I came across this thread looking for something else. Just wanted to post this vid
http://www.youtube.com/watch?v=qZPZ3...eature=related
http://www.youtube.com/watch?v=qZPZ3...eature=related