REVscene - Vancouver Automotive Forum


Welcome to the REVscene Automotive Forum forums.

Registration is Free!You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today! The banners on the left side and below do not show for registered users!

If you have any problems with the registration process or your account login, please contact contact us.


Go Back   REVscene Automotive Forum > Automotive Chat > REVscene Nation: Beyond The GVRD > Island Off-Topic

Island Off-Topic "Must you always talk about cars?" Not in here.
For other things in life..

Reply
 
Thread Tools
Old 05-29-2004, 11:55 AM   #7826
I *Fwap* *Fwap* *Fwap* to RS
 
NanaimoRx-7's Avatar
 
Join Date: Nov 2001
Location: 250 RiceScene
Posts: 1,533
Thanked 0 Times in 0 Posts
Grant I wish I'd bought your car, it looks great in those pics. I'd been meaning to ask about it. If anyone see's a decent shell out there I'd like to hear about it, I need a straight frame.
Advertisement
__________________
No I am not a Certified Rotary Mechanic, but I did stay at a Holiday Inn Express last night.
NanaimoRx-7 is offline   Reply With Quote
Old 05-29-2004, 12:22 PM   #7827
Revscene.net has a homepage?!
 
RZ350's Avatar
 
Join Date: Jun 2002
Location: Victoria
Posts: 1,291
Thanked 0 Times in 0 Posts
Well then according to your chart:

my engine displaces 1.2L total between two rotors.
Each rotor displaces 0.6L so therefore each of my exhaust primarys should, according to your info, be around 0.5" to 0.75" maximum; how can I be choking the exhaust?

Now most people consider a rotarty to be roughly equal to a motor twice the size, so lets just say that EACH of my rotors displaces 1.2L. So my exhaust primarys should be between 1.25" and 1.75", which they are

Before you point out that the bends are not made with a mandrel, keep in mind that they were done by an excellent exhaust maker and the piping is in fact considerably oversized.

I'll find a reference for the scavenging effects later.

Grant

P.S. This is all in good fun, but I do believe that you are wrong and the performance I've observed proves it.
__________________
Making the easy stuff look hard since 1984

Rides:
'05 VW Golf TDI (boosted econobox :evil )
'03 Kawasaki KLX400R (wheelie king)
'84 Italian (daily driver)
'83 RZ-350 (recovered, all except for the electrical)
RZ350 is offline   Reply With Quote
Old 05-29-2004, 12:28 PM   #7828
Revscene.net has a homepage?!
 
RZ350's Avatar
 
Join Date: Jun 2002
Location: Victoria
Posts: 1,291
Thanked 0 Times in 0 Posts
Oh and the noise is alright, especially considering there is no interior. The highway can get a little tedious after a half-hour or so, and if you gas it at any RPM around town you will get noticed. That said it is utterly un-rice sounding, just deep, raspy and a bit of a ping; so people don't like that sound but I certainly do. The big thing is to make sure that you don't get a center-in center-out one, my offset one is the only thing keeping it sane.

Grant

P.S. Nanaimo RX-7, your welcome to take a spin in it anytime your down, or I'll let you know the next time I'm in Duncan with it.
__________________
Making the easy stuff look hard since 1984

Rides:
'05 VW Golf TDI (boosted econobox :evil )
'03 Kawasaki KLX400R (wheelie king)
'84 Italian (daily driver)
'83 RZ-350 (recovered, all except for the electrical)
RZ350 is offline   Reply With Quote
Old 05-29-2004, 12:33 PM   #7829
Hypa owned my ass at least once
 
Lemon's Avatar
 
Join Date: Feb 2003
Location: Nanaimo
Posts: 6,748
Thanked 1 Time in 1 Post
sorry but i have yet to hear a NA rotary exhaust note that is deep
__________________
2009 Mazda5 GT Lux pkg - Family wagon

FS 2000 civic DX B16A swap $3200obo
http://www.revscene.net/forums/fs-20...48#post7309348
Lemon is offline   Reply With Quote
Old 05-29-2004, 12:38 PM   #7830
Revscene.net has a homepage?!
 
RZ350's Avatar
 
Join Date: Jun 2002
Location: Victoria
Posts: 1,291
Thanked 0 Times in 0 Posts
Fair enough, it's not like "jet aircraft at takeoff" deep, but it beats the heck out of "basically stock civic with fart-can" on the deep-o-meter. I could just be the way I hear it in the cockpit, I've never heard it from outside.
Grant
__________________
Making the easy stuff look hard since 1984

Rides:
'05 VW Golf TDI (boosted econobox :evil )
'03 Kawasaki KLX400R (wheelie king)
'84 Italian (daily driver)
'83 RZ-350 (recovered, all except for the electrical)
RZ350 is offline   Reply With Quote
Old 05-29-2004, 12:46 PM   #7831
Hypa owned my ass at least once
 
Lemon's Avatar
 
Join Date: Feb 2003
Location: Nanaimo
Posts: 6,748
Thanked 1 Time in 1 Post
just when i think of NA rotary i think, weed whacker on crack
__________________
2009 Mazda5 GT Lux pkg - Family wagon

FS 2000 civic DX B16A swap $3200obo
http://www.revscene.net/forums/fs-20...48#post7309348
Lemon is offline   Reply With Quote
Old 05-29-2004, 05:37 PM   #7832
I subscribe to the Fight Club ONLY
 
D4Damager's Avatar
 
Join Date: Sep 2002
Location: Nanaimo, BC
Posts: 7,372
Thanked 0 Times in 0 Posts
Did you ever hear my car with the RB header, magnaflow presilencer and Ceti1 SS muffler, Lemon? It was pretty bloody smooth, you're probably thinking of Ty's Dual N1 attack or Justin's broken muffler.

EDIT: This is Jeff, plus J4 is gay.
__________________
Now go runteldat :gun3:
Ok! I reloaded!!
Quote:
Originally posted by Type R
I love the drama.. This shit beats daytime soaps..

Last edited by D4Damager; 05-29-2004 at 05:37 PM.
D4Damager is offline   Reply With Quote
Old 05-29-2004, 06:26 PM   #7833
I Will not Admit my Addiction to RS
 
Join Date: Apr 2002
Location: Nanaimo
Posts: 511
Thanked 0 Times in 0 Posts
Quote:
Originally posted by NanaimoRx-7
Tommy, the man is correct in his exhaust thinking, at least for first gens. A very popular IT7 setup is dual 2" collected before it goes over the axel, and 3 inch over and out. Actually the best setup for a stock port 12A in true dual setup would be to collect it about 3 feet past the rear bumper. Porting brings the collection point closer and closer to the engine. What are you trying to say with that source? 12A's would be picking between the 2-2.5l engine size by using a 2"-2 1/2" pipe, but dual 1.75" should cover it.

How's the noise grant? I've wanted to do duals for awhile but I can't bring myself to chop up my header.
Yes 1.75" covers it but you lose out on the support of the other rotors positive pulses to further enhance the scavenging effect which kills top end. Relying purely on velocity to remove gases across the surface area of 1.75" seems a lot more restrictive than that of a 2"-2.25" collected exhaust closer. There was a huge article somewhere published written by Paul Yaw on this topic.
t0mmy is offline   Reply With Quote
Old 05-29-2004, 06:29 PM   #7834
I Will not Admit my Addiction to RS
 
Join Date: Apr 2002
Location: Nanaimo
Posts: 511
Thanked 0 Times in 0 Posts
Quote:
Originally posted by RZ350
Well then according to your chart:

my engine displaces 1.2L total between two rotors.
Each rotor displaces 0.6L so therefore each of my exhaust primarys should, according to your info, be around 0.5" to 0.75" maximum; how can I be choking the exhaust?

Now most people consider a rotarty to be roughly equal to a motor twice the size, so lets just say that EACH of my rotors displaces 1.2L. So my exhaust primarys should be between 1.25" and 1.75", which they are

Before you point out that the bends are not made with a mandrel, keep in mind that they were done by an excellent exhaust maker and the piping is in fact considerably oversized.

I'll find a reference for the scavenging effects later.

Grant

P.S. This is all in good fun, but I do believe that you are wrong and the performance I've observed proves it.
Not dogging on your exhaust or anything (Mine isn't any better) just clearing up the point that scavenging effect is lost or at the most minimal at that point.
t0mmy is offline   Reply With Quote
Old 05-29-2004, 09:59 PM   #7835
Hypa owned my ass at least once
 
Lemon's Avatar
 
Join Date: Feb 2003
Location: Nanaimo
Posts: 6,748
Thanked 1 Time in 1 Post
Quote:
Originally posted by D4Damager
Did you ever hear my car with the RB header, magnaflow presilencer and Ceti1 SS muffler, Lemon? It was pretty bloody smooth, you're probably thinking of Ty's Dual N1 attack or Justin's broken muffler.

EDIT: This is Jeff, plus J4 is gay.
yeah, sorry jeff i herd it last night, thats where i got the weed whacker idea
__________________
2009 Mazda5 GT Lux pkg - Family wagon

FS 2000 civic DX B16A swap $3200obo
http://www.revscene.net/forums/fs-20...48#post7309348
Lemon is offline   Reply With Quote
Old 05-29-2004, 10:06 PM   #7836
WOAH! i think Vtec just kicked in!
 
bcty's Avatar
 
Join Date: Mar 2002
Location: Out Boosting
Posts: 1,621
Thanked 2 Times in 2 Posts
yeah i like the turbo thing much better start @ 3" and work up
bcty is offline   Reply With Quote
Old 05-30-2004, 03:11 AM   #7837
OMGWTFBBQ is a common word I say everyday
 
jeffraider's Avatar
 
Join Date: Sep 2002
Location: Nanaimo
Posts: 5,230
Thanked 0 Times in 0 Posts
Quote:
Originally posted by Lemon
yeah, sorry jeff i herd it last night, thats where i got the weed whacker idea
my blue car? that's not how it sounded when i sold it
__________________
1990 Mazda Miata

Quote:
Originally posted by abinga
You're all too white to be saying nigga, except for Jeff.
jeffraider is offline   Reply With Quote
Old 05-30-2004, 03:13 AM   #7838
OMGWTFBBQ is a common word I say everyday
 
jeffraider's Avatar
 
Join Date: Sep 2002
Location: Nanaimo
Posts: 5,230
Thanked 0 Times in 0 Posts
oh and what's this business of coal now being a top street racer
__________________
1990 Mazda Miata

Quote:
Originally posted by abinga
You're all too white to be saying nigga, except for Jeff.
jeffraider is offline   Reply With Quote
Old 05-30-2004, 03:43 AM   #7839
I subscribe to the Fight Club ONLY
 
Type R's Avatar
 
Join Date: Jul 2001
Location: Pimp Palace
Posts: 7,236
Thanked 0 Times in 0 Posts
Jeffraider is a lil fucker, fuck that guy..
__________________
-=Teh Kooler Paisan=-

Well Spank My Ass And Serve Me A Milkshake!!
_________________
Sales & Leasing / Wheaton Nanaimo
Type R is offline   Reply With Quote
Old 05-30-2004, 04:01 AM   #7840
I answer every Emotion with an emoticon
 
Nightwalker's Avatar
 
Join Date: Sep 2002
Posts: 7,655
Thanked 443 Times in 188 Posts
Quote:
Originally posted by jeffraider
oh and what's this business of coal now being a top street racer
WHAT STREET RACERS?!?!?!
__________________
Quote:
Originally Posted by MajinHurricane View Post
who would ban me? lol. Look at my post count.
Nightwalker is offline   Reply With Quote
Old 05-30-2004, 09:10 AM   #7841
WOAH! i think Vtec just kicked in!
 
bcty's Avatar
 
Join Date: Mar 2002
Location: Out Boosting
Posts: 1,621
Thanked 2 Times in 2 Posts
i kicked your ass.. my 60 foot time was in the 1.5secs and i had you for the first 100meters and that was 2 foot drive jsut wait till i use all 4.. your fucked pal
bcty is offline   Reply With Quote
Old 05-30-2004, 09:54 AM   #7842
OMGWTFBBQ is a common word I say everyday
 
jeffraider's Avatar
 
Join Date: Sep 2002
Location: Nanaimo
Posts: 5,230
Thanked 0 Times in 0 Posts
Quote:
Originally posted by Type R
Jeffraider is a lil fucker, fuck that guy..
hahahaha
__________________
1990 Mazda Miata

Quote:
Originally posted by abinga
You're all too white to be saying nigga, except for Jeff.
jeffraider is offline   Reply With Quote
Old 05-30-2004, 09:00 PM   #7843
Hypa owned my ass at least once
 
Lemon's Avatar
 
Join Date: Feb 2003
Location: Nanaimo
Posts: 6,748
Thanked 1 Time in 1 Post
next time i wont run 10 psi just gotta get my boost controler fixed lol
__________________
2009 Mazda5 GT Lux pkg - Family wagon

FS 2000 civic DX B16A swap $3200obo
http://www.revscene.net/forums/fs-20...48#post7309348
Lemon is offline   Reply With Quote
Old 05-31-2004, 09:12 AM   #7844
WOAH! i think Vtec just kicked in!
 
bcty's Avatar
 
Join Date: Mar 2002
Location: Out Boosting
Posts: 1,621
Thanked 2 Times in 2 Posts
u can borrow mine for a day or two if u wanna run around town with a bit higher boost
bcty is offline   Reply With Quote
Old 05-31-2004, 09:54 AM   #7845
Hypa owned my ass at least once
 
Lemon's Avatar
 
Join Date: Feb 2003
Location: Nanaimo
Posts: 6,748
Thanked 1 Time in 1 Post
i just need to get a new spring for mine from brainchild, and i cant turn the boost up as of yet cuz my fuel pump is slowly dieing
__________________
2009 Mazda5 GT Lux pkg - Family wagon

FS 2000 civic DX B16A swap $3200obo
http://www.revscene.net/forums/fs-20...48#post7309348
Lemon is offline   Reply With Quote
Old 05-31-2004, 10:25 AM   #7846
Diagonally parked in a parallel universe
 
91TII's Avatar
 
Join Date: Jan 2003
Location: Drivers Seat
Posts: 1,483
Thanked 0 Times in 0 Posts
Quote:
Originally posted by Lemon
sorry but i have yet to hear a NA rotary exhaust note that is deep
Depends on the exhaust setup. I've heard on Video an NA with the full Racing Beat Exhaust and its much deeper then any of the exhaust's on NA's around here. Wait till Aaron gets RB on my old car, it should be a deeper tone. But yeah most NA's do sound more high pitched, but oh well, they can still sound good like that.
__________________
TTM Squad Member

"Objects in Mirror are Piston Powered."
91TII is offline   Reply With Quote
Old 05-31-2004, 10:35 AM   #7847
Hypa owned my ass at least once
 
Lemon's Avatar
 
Join Date: Feb 2003
Location: Nanaimo
Posts: 6,748
Thanked 1 Time in 1 Post
actually i think it was cams car i herd, either way it was a weed whacker lol, im sure u can make them sound good.. like by adding a turbo lol, now turbo 2 sound nice

PS i may have a new walbro comming my way for cheap so no 3rd gen pump for me .. sorry guys lol
__________________
2009 Mazda5 GT Lux pkg - Family wagon

FS 2000 civic DX B16A swap $3200obo
http://www.revscene.net/forums/fs-20...48#post7309348

Last edited by Lemon; 05-31-2004 at 10:36 AM.
Lemon is offline   Reply With Quote
Old 05-31-2004, 11:34 AM   #7848
My AFC gave me an ABS CEL code of LOL while at WOT!
 
DC450's Avatar
 
Join Date: Mar 2002
Location: Whistler ;)
Posts: 1,835
Thanked 0 Times in 0 Posts
Damn, i need to check this thing more often...

But lemon, i dont think you've heard my car... Well, i know you haven't heard my car, its barely on the road! (working) but its got a real deep exhaust, goin up hills in 4th it makes your ears pop bwaaaaa Bonez race pipe, no cats to two unknown mufflers with 4.5 inch resonators on the back
__________________
87 Rx7 sport (Sold)
88 mazda 323 GTX AWD turbo (for sale)
90 Talon TSI AWD, lowered, rims, aftermarket computer/turbo/intercooler, new paint.. (for sale)
88 Rx7 Turbo Deuce. 3 inch exhaust, FCD, intake, blitz blowoff valve, lowered, tinted, Apex'i Safc and a list as long as my arm

Last edited by DC450; 05-31-2004 at 11:36 AM.
DC450 is offline   Reply With Quote
Old 05-31-2004, 12:31 PM   #7849
I bringith the lowerballerith
 
BlackFC3S123's Avatar
 
Join Date: Feb 2003
Location: asdf
Posts: 1,141
Thanked 0 Times in 0 Posts
i will desimate all with my RB full exhaust!

i would just like to say awesome job to George and Jeff at auto cross yesterday, awesome jobs guys......almost a perfect drift on the hairpin eh George?
no worries about that you still did an AWESOME run.

pictures of you guys are on the may 30th saratoga thread.
BlackFC3S123 is offline   Reply With Quote
Old 05-31-2004, 08:29 PM   #7850
WOAH! i think Vtec just kicked in!
 
bcty's Avatar
 
Join Date: Mar 2002
Location: Out Boosting
Posts: 1,621
Thanked 2 Times in 2 Posts
yeah its cool evan you ahve my old set.. sounds soooooooo good id say the best around here right now.. u just gotta work those bugs out..

hey why we talking about n/a's anyways.. turbo is where its at
bcty is offline   Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -8. The time now is 10:50 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
SEO by vBSEO ©2011, Crawlability, Inc.
Revscene.net cannot be held accountable for the actions of its members nor does the opinions of the members represent that of Revscene.net