2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
Sponsored by:

Porting Exhuast manifold

Thread Tools
 
Search this Thread
 
Old 05-18-04, 06:33 PM
  #26  
Lives on the Forum

 
WAYNE88N/A's Avatar
 
Join Date: Feb 2004
Location: Coldspring TX
Posts: 5,721
Likes: 0
Received 2 Likes on 2 Posts
much easier way to gain the 1/10 sec in the quarter would be to find 100 or so pounds worth of crap on the car and get rid of it
Old 05-18-04, 07:38 PM
  #27  
Is that thing Turbo?

Thread Starter
 
totallimmortal's Avatar
 
Join Date: Jan 2004
Location: Maryland
Posts: 1,411
Likes: 0
Received 0 Likes on 0 Posts
I've considered wieght reduction but i drive my car everyday and alot and i've gotten rid off all i want to and am down to 2510 lbs. What I was getting at with the porting idea was that i have 3inch pipe right off the manifold for about 18 inches and then 18 of 2.5, to the rb catback which is dual 2.25 so the most restrictive part left is that manifold
Old 05-18-04, 07:52 PM
  #28  
Nothin But a G Thang

 
ajsuper7's Avatar
 
Join Date: Mar 2001
Location: Houston, Texas
Posts: 1,213
Likes: 0
Received 0 Likes on 0 Posts
the only conclusive test is to do a before and after dyno. i had thought of this a long time ago being that headers are so ridculously loud that just putting headers on my car ruined my driving experience, but could of been due to a few exhaust leaks why it was so loud but i thought that the car sounded a bit better with the stock manifold on, i figure it couldnt hurt to port the sucker so just do it and dont listen to what others say. see for yourself, i dont see any downside to doing it....go for it. prove them all wrong or right, it wont matter, atleast the manifold will weight less and wont sound like a lawnmower like headers do.
Old 05-18-04, 09:48 PM
  #29  
Is that thing Turbo?

Thread Starter
 
totallimmortal's Avatar
 
Join Date: Jan 2004
Location: Maryland
Posts: 1,411
Likes: 0
Received 0 Likes on 0 Posts
Alright i just want to apologize if i pissed anyone off sayin they were stupid i just get fustrated when i ask a question and get incoplete answers and then people get pissed. Since it doesn't seem like anyone has seen any negative results with doin it i'm, gonna do it this week and will tell you all what i think
Old 05-18-04, 10:44 PM
  #30  
whats going on?

iTrader: (1)
 
SirCygnus's Avatar
 
Join Date: Mar 2004
Location: atlanta ga
Posts: 4,929
Received 8 Likes on 7 Posts
its a waste of time, thats the results. like i said, the exhaust makes a sudden 90 degree turn. plus, gutting the cats would be a better idea. unles you already did that, than thats fine. but until you get a header, people are gonna wonder why the hell you spent the time on modifying a manifold that its horribly misschapen. its not that nothing lines up or that it has rough inner wals or **** like that, if you smoothen it out, there will be no affect. now, porting the tb and the im will yeild results. because someone has tried.


its like trying to make an airfulkter adapter out of an old afm. it looks good in theory, but in reality, is just a plain pain in the *** and a waste of time.
Old 05-18-04, 11:32 PM
  #31  
Is that thing Turbo?

Thread Starter
 
totallimmortal's Avatar
 
Join Date: Jan 2004
Location: Maryland
Posts: 1,411
Likes: 0
Received 0 Likes on 0 Posts
well already did the tb porting, but i don't see why it would not help to make the opening at the back of the manifold bigger, like match it to the gasket, kinda take the hole that the exhauast exits the manifold throught and take it from whatever size it is now to about a 1/4 inch in diameter larger.

Last edited by totallimmortal; 05-18-04 at 11:34 PM.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Ian_D
Single Turbo RX-7's
25
10-14-15 12:31 PM
Clacor
Single Turbo RX-7's
19
09-11-15 08:36 PM
mulcryant
2nd Generation Specific (1986-1992)
10
09-09-15 05:24 PM
Ian_D
New Member RX-7 Technical
6
09-06-15 10:38 PM
doritoloco
New Member RX-7 Technical
7
09-05-15 12:41 PM



Quick Reply: Porting Exhuast manifold



All times are GMT -5. The time now is 12:02 PM.