twint78

an xpipe creates evenflow out both exhuast.
what it does is take uneven exhuast from both sides combines the 2 and divides evenly.this will create back pressure.

turbostreetfighter

marcus,
look dick, i've said all along you had a good point about heavier fw's. i understand about rotational intertia and i know adam used a heavier fw for that very reason. in fact i prefer a heavier fw on the street. what i'm trying to tell you is ************* these days don't ******* care about that and are running quicker than ever. now you're getting bitchy cause you have to keep backpedaling with more and more exceptions.


first of all **** YOU!!!! i was not trying to demeanor you in anyway !! how am i getting BITCHY? all i was trying to do is give you simple ways of understanding the point i am making. if you dont want to understand than shut the **** up, and turn your computer off!






i don't understand your ****** superiority complex, you think you know more than everyone else cause you've got all this experience this and experience that.

how do you think i got all of my experience Dumbass?

well i'm sorry i don't have as much money as you to be a bigshot, i'm sorry that everytime a throw a rod straight through the block it takes me little while to save up again. now, i'm not attacking you in any way and i understand you've got a very viable point of view, but i don't appreciate your ****** attitude. you need to realize that there's two sides to every story.

you are the one that started the name calling and ****, i dont have a lot of money, and i dont claim to be a bigshot! you said it not me. everyday all day i am building drag cars so that gives me more superiority over at least you. when you build something that can beat me or make more power than me then you can talk al of the **** you want. i am sorry that you dont like my ******* attitude and you should also know that i dont give a flying **** what you think, to me you are a PION!!
BTW what did i say to you that offended you sooo much?

peejay

No it doesn't. By evening the exhaust pulses with an H-pipe or an X-pipe (although it's better done with a flat-plane crank or with 360-degree headers like you'd see on GT40s or Panteras) you are allowing the exhaust system to see evenly-spaced resonance from the pressure pulses. The resonance effects work across all cylinders and increases flow. This is NOT "added backpressure".

fdracer

marcus,
maybe you should be mad at yourself, not me, it is you who has been contradicting yourself throughout this whole thread. you go off on how great the heavy fw is, then you go and tell us about all the instances where a lwfw is actually better. all i'm saying is that there are applications for both. the fact of the matter is a heavy fw is the exception to the rule rather than the norm in import drag racing. i'd say over 3/4 of the import guys out there run a lighter fw, and yes they're breaking records left and right. even you can't argue this one.

turbostreetfighter

i am not contradicting myself, you asked me questions and i answered them and i also told you the reason they are using the LFW's what else can i say? all of the cars you were talking about were not RX7's they were hondas and supras. ARI uses a stock FW and so does Steve, do you want to argue with them too? do you not think that Ari tried the LFW? the next time you decide to start a war try to start it about a subject that you are knowledgable about ...like useless **** talking! and you are wrong about 3/4 of the import racers using LFW unless you are talking about road racing or bracket racers. i gaurantee that i know more of them than you do and i know the setup that they are using. please do not reply to this post as i will not answer back it is obvious that your maturity level is about the same as my 3 year old daughter! i have better things to do than argue with a child. and to everyone else ..sorry for this waste of bandwidth, i try and help everyone understand and answer any questions that y'all have and then get flamed over some bullshit. this is not what a forum is about ,i am not always right and i dont claim to be which is why i ALWAYS state that i am not here to argue but to tell my experiences about a given subject. if anyone should have been mad it should have been SPautos and he did not blow his top!!

Silver7

This forum is suppose to be about sharing experiences, not flaming someone for having a difference of opinion. Here is my experience..
I switched from a stock flywheel to an 11.5 lb flywheel. I drag race occasionally for fun but I also do some road racing and autocrossing. After driving it around for a while I fell in love with it. I love the quick revving and ease of rev matching my gears. I took the car to the drag strip to see if my times would change. I was still on stock sequential turbos at the time and I was using a 6 puck ACT clutch. My times remained pretty much the same. I ran an 11.6 at 118. Before the flywheel upgrade my best time was 11.7 at 118. I am not attributing the .1 second to the flywheel. I think I was just getting a little better at hitting my shift points.

turbostreetfighter

thanx for the info. did you try the two FW's after you converted to single?


MWW

Silver7

I did not. I am very curious about this cause I think that a heavier flywheel may start to make a difference with single turbos do to the lack of torque in the lower rpms. Oops, did I say say torque? Maybe I meant rotational inertia.

turbostreetfighter

ha ha