Adaptronic
Sponsored by:
Sponsored by:

Retarded CAS guy

 
Old 01-03-2011, 04:03 AM
  #1  
Newb
Thread Starter
 
Join Date: Jul 2010
Posts: 12
Total Cats: 0
Default Retarded CAS guy

If i retard the cam angle sensor or the distributor should I increase/advance the cranking ignition timing?

Also backfireing on cranking is too much fuel?
privatealpha is offline  
Old 01-03-2011, 10:44 AM
  #2  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 76,358
Total Cats: 2,294
Default

The Adaptronic controls the spark. If you rotated the CAS without telling the ECU you did so your spark timing is going to be WAY off. The ECU might think it's trying to maintain 10 at idle when you might actually be at 0 or -10. However much you retarded it off from synced, you'll be that retarded through your entire map.
Braineack is offline  
Old 01-03-2011, 03:06 PM
  #3  
Newb
Thread Starter
 
Join Date: Jul 2010
Posts: 12
Total Cats: 0
Default

I probably only retarded it 1-3mm, I estimate 1 degree, not much
And yes, I know the entire map will be retarded, its why I did it.
Cant find 98ron fuel so for the meanwhile running on 95ron.
privatealpha is offline  
Old 01-03-2011, 03:07 PM
  #4  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 76,358
Total Cats: 2,294
Default

why wouldn't you just retard your spark map then?
Braineack is offline  
Old 01-03-2011, 03:25 PM
  #5  
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 15,281
Total Cats: 1,997
Default



Lol at "estimating" spark retatd based on cas rotation. Go buy a timing light before you melt a piston.
__________________
Trackspeed Engineering
High-Performance Turbo Specialists - Sunnyvale, CA - 650-701-7223 - Email us!
Originally Posted by codrus View Post
Basically I've come over to the camp of "If something is a reliability problem on the track, just ask Andrew and do what he says".
Savington is online now  
Old 01-03-2011, 03:44 PM
  #6  
Newb
Thread Starter
 
Join Date: Jul 2010
Posts: 12
Total Cats: 0
Default

Degrees marked out on the cas.
Just wondering if i retard 1 degree, I would advance 1 degree for cranking.
privatealpha is offline  
Old 01-03-2011, 04:28 PM
  #7  
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,179
Total Cats: 509
Default

put it back and verify that timing matches what is displayed in the adaptronic and then slap yourself and just remove timing from the whole timing map instead of dicking around with the cas.
y8s is offline  
Old 01-03-2011, 05:14 PM
  #8  
Senior Member
iTrader: (4)
 
Join Date: Jan 2008
Location: Falls Church, VA
Posts: 1,361
Total Cats: 17
Default

Merely adjusting the CAS a degree or two should not make the car hard to start or cause it to backfire. You have either moved it a lot more than you think you have, or something else is the root cause.

When my car was starting really rough and backfiring and I couldn't adjust the CAS enough to time it properly, it was because my newly installed timing belt had slipped a tooth.
ScottFW is offline  
Old 01-03-2011, 05:43 PM
  #9  
Senior Member
iTrader: (4)
 
Join Date: Nov 2009
Location: Toronto, ON
Posts: 1,447
Total Cats: 6
Default

Originally Posted by Braineack View Post
why wouldn't you just retard your spark map then?
+1 This. Makes almost no sense to have a standalone ECU
dgmorr is offline  
Old 01-04-2011, 03:36 AM
  #10  
Newb
Thread Starter
 
Join Date: Jul 2010
Posts: 12
Total Cats: 0
Default

Should i use the master ignition trim OR 'Select All' on the ignition table (And retard that way).
It was hard to start because the CAS was on 7 degrees - Should be 10 degrees.

I had to take the CAS out about 3 months ago to rebuild it and I just put it back straight in, and to my surprise the car started. Must've marked it pretty good.

I have got the car retuned since, so im thinking I should retard 3 degrees to keep it in check.
The reason I couldnt check the timing before was because I had an oversized crank pulley, and have now gone back to a standard size pulley- where I now have the timing marks. Motor is a 4agze, from Toyota.
privatealpha is offline  
Old 01-04-2011, 04:52 AM
  #11  
Cpt. Slow
iTrader: (25)
 
curly's Avatar
 
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 12,760
Total Cats: 676
Default

Get a timing light.

It sounds like you think the stock 10 degree timing spec has something to do with the CAS. The CAS sets it, but you're pulling timing off the crank, and the CAS is a CAM angle sensor.

Again, get a timing light.

Thanks by the way, for telling us it's not a Miata motor 10 ******* posts into your "help me I'm a retard" thread.

GET A ******* TIMING LIGHT!

I mean did you really think that you could come in here with your shitty grammar and your shitty explanation and think we'd be able to help you? WHO THE **** CAN DIAGNOSIS AN ENGINE PROBLEM WHEN NO ONE KNOWS WHAT ENGINE IT IS?!? ******* moron.

Get a timing light.
curly is offline  
Old 01-04-2011, 05:10 AM
  #12  
Newb
Thread Starter
 
Join Date: Jul 2010
Posts: 12
Total Cats: 0
Default

Yea I apologize.
I was trying to get the post up before I got to work, so I could read the replies when I got home. Didnt read over what I posted, missed out some important info obviously.

I checked the ignition timing a few hours ago, it was slightly retarded at 7 degrees. Ive put it back to 10 degrees and the car seems to start much easier.
The whole mess started when I had to rebuild the Cam angle sensor.
Ive loaded up the previous tune and it starts and drives pretty good.

Again, sorry, thought I had put Corolla in the first post.
privatealpha is offline  
Old 01-04-2011, 08:07 AM
  #13  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 76,358
Total Cats: 2,294
Default

Does the Adaptronic's readings and your actual readings with the timing light coincide now?
Braineack is offline  
Old 01-04-2011, 09:30 AM
  #14  
Senior Member
iTrader: (4)
 
Join Date: Nov 2009
Location: Toronto, ON
Posts: 1,447
Total Cats: 6
Default

Master Ignition Trim would be it...if everything else is set correctly.
dgmorr is offline  
Old 01-04-2011, 10:27 AM
  #15  
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,179
Total Cats: 509
Default

master ignition trim should really be zero.

you should get your timing light to match the adaptronic by dithering the trigger offset angles...

whatever is in the timing map should be what the car is actually timed to.
y8s is offline  
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Full_Tilt_Boogie
Build Threads
67
03-16-2019 08:07 PM
JxPhan
Meet and Greet
3
10-02-2015 02:17 AM
The Gleas
MEGAsquirt
3
10-01-2015 09:30 AM
aidandj
MEGAsquirt
14
09-25-2015 05:26 PM


Thread Tools
Search this Thread
Quick Reply: Retarded CAS guy


Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.