1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

After few upgrades, I have a ? Or two...

Thread Tools
 
Search this Thread
 
Old 07-25-11, 02:11 AM
  #1  
Vrooooom Pfffshhhhhhh...
Thread Starter
iTrader: (2)
 
Danker06's Avatar
 
Join Date: Jul 2011
Location: Los Angeles
Posts: 50
Likes: 0
Received 0 Likes on 0 Posts
CA After few upgrades, I have a ? Or two...

After purchasing my 81 RX7 my intention is obviously to keep it for a very long time. Since purchasing the vehicle I have completed a few upgrades. But the specific two have lead me to post this thread.

1. I have replaced the stock air cleaner with the racing beat canister. Should I have plugged up the four vacuum hoses that lead to the stock air cleaner?

2. I recently purchased a universal RB exhaust and had it installed modifying the piping to 2 and a half and eliminating the cats. Today I experienced the oes light on for a short period of time. I'm sure this is going to occur often due to the elimination of the cat based on what I read here. But this is my daily driver and was wondering if will do anything negative to the motor and also if it's safe?
Thanks in advance
D
Old 07-25-11, 03:28 AM
  #2  
Senior Member

iTrader: (1)
 
Mr_Miles's Avatar
 
Join Date: Oct 2010
Location: oregon
Posts: 484
Likes: 0
Received 0 Likes on 0 Posts
might have something to do with the rat's nest and the entanglement of wires connecting to it. has it been removed?
Old 07-25-11, 08:42 AM
  #3  
Vrooooom Pfffshhhhhhh...
Thread Starter
iTrader: (2)
 
Danker06's Avatar
 
Join Date: Jul 2011
Location: Los Angeles
Posts: 50
Likes: 0
Received 0 Likes on 0 Posts
This car came unmolested so I think it's safe to say that no the "rats nest" has not been removed. Does the 81 rx7 have one? Everything I googled has led me to 2nd and 3rd gen threads only regarding the rats nest.
Old 07-25-11, 08:52 AM
  #4  
Vrooooom Pfffshhhhhhh...
Thread Starter
iTrader: (2)
 
Danker06's Avatar
 
Join Date: Jul 2011
Location: Los Angeles
Posts: 50
Likes: 0
Received 0 Likes on 0 Posts
Ahhh nevermind! Just found one by rx7carl. Will give that a go and see what happens . But until then, is the car ok driving the way it is now?
Old 07-25-11, 11:26 AM
  #5  
Round and Round

iTrader: (10)
 
74RX4's Avatar
 
Join Date: Aug 2002
Location: SW Florida
Posts: 1,516
Likes: 0
Received 3 Likes on 3 Posts
None of the hoses going to the air cleaner are vacuum. They are fresh air intakes only. If you cap them the system they feed will be disabled. They all connect to parts of the emission control system. They should not damage the motor connected or not.
Old 07-25-11, 02:05 PM
  #6  
Moderator

iTrader: (3)
 
j9fd3s's Avatar
 
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,829
Received 2,597 Likes on 1,845 Posts
Originally Posted by Danker06
. Today I experienced the oes light on for a short period of time.
D
what is an OES light?
Old 07-25-11, 04:14 PM
  #7  
Vrooooom Pfffshhhhhhh...
Thread Starter
iTrader: (2)
 
Danker06's Avatar
 
Join Date: Jul 2011
Location: Los Angeles
Posts: 50
Likes: 0
Received 0 Likes on 0 Posts
The overheated exhaust system light...
Old 07-25-11, 06:12 PM
  #8  
Moderator

iTrader: (3)
 
j9fd3s's Avatar
 
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,829
Received 2,597 Likes on 1,845 Posts
Originally Posted by Danker06
The overheated exhaust system light...
ah did you take off the big heat shield over the exhaust?
Old 07-25-11, 06:51 PM
  #9  
Vrooooom Pfffshhhhhhh...
Thread Starter
iTrader: (2)
 
Danker06's Avatar
 
Join Date: Jul 2011
Location: Los Angeles
Posts: 50
Likes: 0
Received 0 Likes on 0 Posts
I did. I upgraded to 2.5 in piping straight to a universal racing beat exhaust. Should have I somehow kept that?... Didn't think it was needed since I have always done that to all my lil hobby/daily cars.
Old 07-26-11, 07:24 AM
  #10  
Waffles - hmmm good

iTrader: (1)
 
t_g_farrell's Avatar
 
Join Date: Jul 2004
Location: Lake Wylie, N.C.
Posts: 8,783
Received 282 Likes on 232 Posts
Originally Posted by Danker06
I did. I upgraded to 2.5 in piping straight to a universal racing beat exhaust. Should have I somehow kept that?... Didn't think it was needed since I have always done that to all my lil hobby/daily cars.
I bet that exhaust is kind of loud without any presilencers. When your hearing
starts to go, you'll learn.

Yeah those heat shields ate pretty much needed on a rotary. The exhaust is
almost twice as hot as any piston engine exhaust ever gets.
Old 07-26-11, 09:22 AM
  #11  
Moderator

iTrader: (2)
 
rxtasy3's Avatar
 
Join Date: Jun 2002
Location: Spartanburg, SC
Posts: 9,318
Likes: 0
Received 256 Likes on 237 Posts
i never had my exhaust overheat light come on til this last time at dgrr.
Old 07-26-11, 09:38 AM
  #12  
Slave to the Rotor!

iTrader: (8)
 
81WideMariah's Avatar
 
Join Date: Jul 2006
Location: Orlando/Winter Park
Posts: 849
Likes: 0
Received 1 Like on 1 Post
Pull the gauge cluster out and pop the bulb out from the back of the cluster.... problem solved. My OES light used to randomly turn on.. even when the vehicle was dead cold and I had just started it up.... obviously these sensors aren't the most accurate or reliable pieces of equipment. Plus you have no cats and that is what the OES light is referencing, it is meant to prevent you from melting the cats..... kinda impossible now.
Old 07-26-11, 11:52 PM
  #13  
Vrooooom Pfffshhhhhhh...
Thread Starter
iTrader: (2)
 
Danker06's Avatar
 
Join Date: Jul 2011
Location: Los Angeles
Posts: 50
Likes: 0
Received 0 Likes on 0 Posts
Surprisingly the exhaust isn't as loud as I thought it was going to be. That universal RB exhaust sounds nice! I'm going to try the following solutions and see what happens. Today I collected the heat shields from my local muff shop. I'm going to figure out a way of maybe spot welding a few points so that it can be placed over the staight pipe. But at this point will that help? Also removing the rats nest. Hopefully it all goes smooth.
Old 07-26-11, 11:57 PM
  #14  
Vrooooom Pfffshhhhhhh...
Thread Starter
iTrader: (2)
 
Danker06's Avatar
 
Join Date: Jul 2011
Location: Los Angeles
Posts: 50
Likes: 0
Received 0 Likes on 0 Posts
Sorry for not adding this to the last post. Furthermore in removing the ratsnest and straight piping the car will not compromise reliability or even safety? I read some other members thread that his exhaust exploded or someshit! Craziness! Anyway thanks for helping me out.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ls1swap
3rd Generation Specific (1993-2002)
12
10-01-15 07:58 PM



Quick Reply: After few upgrades, I have a ? Or two...



All times are GMT -5. The time now is 05:32 PM.