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

Questions about advancing timing.

Thread Tools
 
Search this Thread
 
Old 10-05-11, 02:57 PM
  #1  
This is my social media.

Thread Starter
iTrader: (22)
 
dwb87's Avatar
 
Join Date: Jan 2006
Location: WA
Posts: 2,744
Likes: 0
Received 0 Likes on 0 Posts
Questions about advancing timing.

I've seen plenty of helpful threads about setting the timing. I've been searching for threads explaining how to advance the timing on a modified engine.

Is TDC "good enough" on a modified engine? Does it necessarily have to be advanced to see it's full potential? Should this only be done by your tuner? Is it the rotation of the CAS one way or the other? (retard or advance)

Perhaps I don't know enough about retarding or advancing the timing to even question it. That is why I am asking.
Old 10-05-11, 03:01 PM
  #2  
They live We sleep
iTrader: (1)
 
rx7_FREAKKK's Avatar
 
Join Date: Feb 2009
Location: Dot Island
Posts: 919
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by dwb87
I've seen plenty of helpful threads about setting the timing. I've been searching for threads explaining how to advance the timing on a modified engine.

Is TDC "good enough" on a modified engine? Does it necessarily have to be advanced to see it's full potential? Should this only be done by your tuner? Is it the rotation of the CAS one way or the other? (retard or advance)

Perhaps I don't know enough about retarding or advancing the timing to even question it. That is why I am asking.
Beware, this room has more smart asses then helpful people. I started off with the right mark (YELLOW) from what i am told lined up to the PIN. Then See how it Drives, then maybe advance it 5 or 10 As long as its not missing, Depending what year car you have
Old 10-05-11, 03:53 PM
  #3  
rotorhead

iTrader: (3)
 
arghx's Avatar
 
Join Date: Aug 2004
Location: cold
Posts: 16,182
Received 429 Likes on 263 Posts
Need full details on your setup and what you plan to do with the car.
Old 10-05-11, 08:33 PM
  #4  
This is my social media.

Thread Starter
iTrader: (22)
 
dwb87's Avatar
 
Join Date: Jan 2006
Location: WA
Posts: 2,744
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by rx7_FREAKKK
Beware, this room has more smart asses then helpful people. I started off with the right mark (YELLOW) from what i am told lined up to the PIN. Then See how it Drives, then maybe advance it 5 or 10 As long as its not missing, Depending what year car you have
I know how to set the timing. That isn't really my question.

My set up is:
Mild street port
3mm apex seals
APEX'i Power FC for FD3S with commander
Banzai Racing Power FC adapter for S4
Koyo radiator
FMIC
HKS SSQV III blow off valve
ACT HD clutch plate
ACT SS clutch disc
ACT Prolite flywheel
BNR Stage 4 turbo
Cheap FPR
720cc primary fuel injectors
1,600cc secondary fuel injectors
Walbro fuel pump
Racing Beat REV TII Exhaust
130 Amp Ford Taurus alternator
All emissions removed

It's been tuned by Steve Kan. I kind of brought it to him running like a turd. lol - I plan to get the car in better/smoother running condition.
Old 10-06-11, 03:45 PM
  #5  
Engine, Not Motor

iTrader: (1)
 
Aaron Cake's Avatar
 
Join Date: Feb 2001
Location: London, Ontario, Canada
Posts: 29,789
Likes: 0
Received 108 Likes on 91 Posts
Leave the position of your CAS alone. Any timing changes would need to be done via the ECU.

Can you post your timing table? Honestly, chasing power by tuning timing in boost past what a fairly reputable tuner has already set it at is a bit dangerous.
Old 10-06-11, 03:47 PM
  #6  
rotorhead

iTrader: (3)
 
arghx's Avatar
 
Join Date: Aug 2004
Location: cold
Posts: 16,182
Received 429 Likes on 263 Posts
Leave the position of your CAS alone. Any timing changes would need to be done via the ECU.
yup. Do you have a Datalogit to access your Power FC with a laptop?
Old 10-06-11, 05:25 PM
  #7  
This is my social media.

Thread Starter
iTrader: (22)
 
dwb87's Avatar
 
Join Date: Jan 2006
Location: WA
Posts: 2,744
Likes: 0
Received 0 Likes on 0 Posts
No, I do not have a Datalogit, and I am not able to post my timing table.

To make a long story short...

I have this damn ticking noise in my engine bay. I've ruled out turbo shaft play, exhaust leak, frayed belts, alternator, etc...

The noise seems to be coming from the turbo side. It's almost as if it may be something inside of the CHRA. But the BNR stage 4 turbo is as old as the engine. (Roughly 6,000 miles on them) - I keep thinking, what if this ticking noise has something to do with the coils firing when they shouldn't be. Is this absurd to think? Would it really be this loud outside and on this side of the engine?

Extra information: My coils are modified (dual igniter) for the Banzai Power FC adapter and I use a .065 restrictor pill for my BNR stage 4 turbo.
Old 10-06-11, 05:40 PM
  #8  
Sharp Claws

iTrader: (30)
 
RotaryEvolution's Avatar
 
Join Date: Oct 2003
Location: Central Florida
Posts: 5,107
Likes: 0
Received 41 Likes on 40 Posts
if it's a ratcheting noise on decel, it's your downpipe.

i have no idea why advancing timing came into the equation..

if it's a ticking noise randomly at idle, you probably have a loose exhaust sleeve in one of both of the rotor housings.
Old 10-06-11, 05:44 PM
  #9  
This is my social media.

Thread Starter
iTrader: (22)
 
dwb87's Avatar
 
Join Date: Jan 2006
Location: WA
Posts: 2,744
Likes: 0
Received 0 Likes on 0 Posts
Is a loose exhaust sleeve bad?... If so, how much of a bitch is it to "fix"?

Timing came in... Because I am going crazy over this noise, and thinking of every possibilty. I have literally lost sleep over this problem.
Old 10-06-11, 07:19 PM
  #10  
Sharp Claws

iTrader: (30)
 
RotaryEvolution's Avatar
 
Join Date: Oct 2003
Location: Central Florida
Posts: 5,107
Likes: 0
Received 41 Likes on 40 Posts
well i had one customer who had a sleeve come loose because it was a used housing he bought from someone else. the pins were drilled out and screws put in, i didn't think much of it until several thousand miles later a ticking noise showed up from the engine, sounded like it was internal... we pulled the turbo off and sure enough it was sloppy and whacking the manifold with each pulse and warping the sleeve.

no easy way to tell without pulling the turbo off. but this is just a guess from personal experience.

only way to fix it is disassembling the engine..
Old 10-06-11, 07:31 PM
  #11  
This is my social media.

Thread Starter
iTrader: (22)
 
dwb87's Avatar
 
Join Date: Jan 2006
Location: WA
Posts: 2,744
Likes: 0
Received 0 Likes on 0 Posts
Is it okay to drive it like this?
Old 10-06-11, 07:51 PM
  #12  
Sharp Claws

iTrader: (30)
 
RotaryEvolution's Avatar
 
Join Date: Oct 2003
Location: Central Florida
Posts: 5,107
Likes: 0
Received 41 Likes on 40 Posts
if it is a sleeve? i would say it isn't a good idea. at least not boosting it hard.
Old 10-06-11, 08:06 PM
  #13  
This is my social media.

Thread Starter
iTrader: (22)
 
dwb87's Avatar
 
Join Date: Jan 2006
Location: WA
Posts: 2,744
Likes: 0
Received 0 Likes on 0 Posts
****.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
acha3
2nd Generation Specific (1986-1992)
7
09-06-15 08:14 AM
ZaqAtaq
New Member RX-7 Technical
2
09-05-15 08:57 PM
Apoc3D
2nd Generation Specific (1986-1992)
10
09-05-15 10:24 AM
rx7shirley
2nd Generation Specific (1986-1992)
6
09-02-15 02:11 PM



Quick Reply: Questions about advancing timing.



All times are GMT -5. The time now is 04:44 PM.