The way they affect tuning of the engine is basically by altering the length of the induction runner (from the tip of the trumpet to the head of the valve). There's a formula in 21st Century Performance for working it out. There is also an effect of the bellmouths of the ram tubes but since most people use sock filters this probably won't make any appreciable difference...... but it'd definately be open to debate I think :)
Ryan Ottens wrote: > > im pretty sure autosport here in adelaide on magill road sell them. > at around $30-40 EACH > > >> From: "Craig Coffey" <[EMAIL PROTECTED]> >> Reply-To: [EMAIL PROTECTED] >> To: <[EMAIL PROTECTED]> >> Subject: Re: webber questions >> Date: Mon, 18 Mar 2002 07:40:31 +1200 >> >> I don't know where in oz you'd get 'im, but they're called velocity >> stacks >> >> >> Craig >> >> ----- Original Message ----- >> From: "Leighton" <[EMAIL PROTECTED]> >> To: <[EMAIL PROTECTED]> >> Sent: Saturday, March 16, 2002 9:26 PM >> Subject: webber questions >> >> >> > Where can i get those trummpet looking things to stick on th side >> of my >> > dellorto's?? >> > >> > i dont even know what they are called >> > >> > can any one help me with some info of what they do and how they aid >> > performance?? >> > >> > >> > thanx heaps >> > >> > Leighton >> > >> > >> > > > > > _________________________________________________________________ > Chat with friends online, try MSN Messenger: http://messenger.msn.com > > --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[email protected]/ ---------------------------------------------------------------------
