DC2 TypeR / E36 328i
Lol at Internet egos! Far from it Daniel.
Your posts in this thread suggest otherwise Christopher!
Lol at Internet egos! Far from it Daniel.
It will effect me if I ever become poor and have to move to Pontefract as I will have to hear it.
Lol, wouldn't make it 10 minutes you southern fairy!
11 pages FLOL, your doing well
Anyway do you like my exhaust or not?
I'd sooner catch AIDS again than have to live with that exhaust mate.
I swear I've seen chip in a porno.
Its quite possible mate, although ive not made any straight ones recently.
Its quite possible mate, although ive not made any straight ones recently.
Always knew you were a turd burglar.
What's your stage name?
Your posts always make me laugh chip.
And that picture ^^^^^ nice bat
Tinker bell
I think he wants to make another movie with you chip.. this time he'll get it all in his mouth (inc the balls)
The problem with being in gay films is you could end up with your exhaust tube ending up oversize and making horrible farting noises all the time that you cant control, something Im sure you can relate to.
Going back to this, it's kind of hard to understand what you're saying but whatever, I think you're saying I get no gain, then go on to say I do gain?
It doesn't matter how much power I gain, or don't gain, what matters is I gain a smile on my face.
If that makes me look a chav idiot then so be it!
but make personal comments about the area I live, and judgements about me based on my car is a s**tty thing to do. You think I chose to live here? I was born and bred. It's not the nicest areas but heck, at least we've got a Haribo factory. Has Surrey? I thought not.
Pontefract 1 - 0 Surrey.
I absolutely love it.
Its retarded, it'll piss everyone off and get you in so much trouble... but its so awesome.
Well done!
LOL , enjoy the car mate , but seriously the exhaust does it no favours , make it quieter , get it on track and find out what honda really built , you'll never find out on a road.
How come it is so loud? Is it Simply a pipe and nothing else?
Not my cup-of-tea - but fairplay for trying it for the laugh. The Evo gets too loud in-car for me at times - and that's WAAAAAY quieter than yours!
D.
Do NA engines not need a decent amount of back pressure?
I may be wrong..but i thought Turbo engines like a bigger exhaust as possible (with some element of back pressure however NA engines really do need a good bit of back pressure to perform properly and have a nice torque curve?
Back pressure is a really massively misused term, NO 4 stroke internal combustion engine wants exhaust back pressure, in fact in an ideal world you would have negative exhaust back pressure.
Negative exhaust back pressure is only possible when you get the diameter and length of the exhaust correct for a particular situation, on the ITR in question for example you'd see neg back pressure at high rpm momentarily towards the end of the exhaust stroke of the engine with this exhaust as at high RPM the gas speeds would be high enough to provide that effect, at lower rpm though it will lose that effect (which the standard exhaust has).
Silencers do nothing to improve negative EBP, so all cars will perform better without them, they are only there to control noise, they dont benefit performance at all.
An ideal exhaust for this car performance wise would be in the 2.25-2.5" region and have utterly no silencers and as few bends as possible.
You are correct that turbos dont really benefit from a small exhaust with high gas speeds but you are totally incorrect to use the term exhaust back pressure as a positive thing, its not, its exhaust gas speed that you want, thats kind of linked to EBP in that smaller pipes have higher of both, but where people (like yourself by the sounds of it) make the mistake is that silencers increase EBP but that doesnt equate to an increase in gas speed as well like an increase in EBP from a smaller diameter pipe will.
In an ideal world you would have a small diameter pipe at low rpm and a large diameter one at higher rpm.
An interesting topic which I tried to enforce I have little knowledge of. I have just your typical word of mouth pool of knowledge. After a bit of reading (your post sparked my curiosity further) Its all to do with pulse zones. Glad I posted though.
Yes its all about the exhaust pulses providing a partial vacuum behind them which helps to draw the air out of the cylinder (and hence during valve overlap allow it to also help draw fresh air in)
Chip, you seem to know your stuff about engines. I'm an engineer myself and did a couple of modules on IC engines, suspension geometry, drivetrain etc.
i had done little on 2T engines but know the basics. Going a little off track I wonder if you know about the motocross 2t engines with the big expansion chambers ? I see so many bashed up and always think to myself this must be losing a lot of power? What are your thoughts on it if you are into this area? This isn't a test also lol, I'm genuinely interested and have only done some basic reading a few months back on how much design is gone into these things to create the variety of pulses that they can.