Notices
Evo Engine / Turbo / Drivetrain Everything from engine management to the best clutch and flywheel.

Timing issues

Thread Tools
 
Search this Thread
 
Old Jul 6, 2009 | 09:00 PM
  #1  
evo8john's Avatar
Thread Starter
Evolving Member
iTrader: (1)
 
Joined: Aug 2008
Posts: 319
Likes: 0
From: Lincoln, Ne
Timing issues

Just looked at a log i made a little closer and realized that from 3 to 6 k i am only around 3* of ignition timing with 0 KR and 6k to 7500 it goes up gradually to 11. is this normal? How much timing should I be running (we only have 91 oct here in nebraska). Mods are 3" TBE, MBC at 22 psi, HKS intake, and Megan exhaust manifold.

Thanks Guys
Reply
Old Jul 7, 2009 | 05:55 AM
  #2  
crcain's Avatar
Evolved Member
 
Joined: Oct 2002
Posts: 2,788
Likes: 1
Originally Posted by evo8john
Just looked at a log i made a little closer and realized that from 3 to 6 k i am only around 3* of ignition timing with 0 KR and 6k to 7500 it goes up gradually to 11. is this normal? How much timing should I be running (we only have 91 oct here in nebraska). Mods are 3" TBE, MBC at 22 psi, HKS intake, and Megan exhaust manifold.

Thanks Guys
It's hard to say but 22 psi and 91 octane might only take 3 degrees at peak boost. But to have exactly 3 degrees for 3k rpm doesn't make sense. As rpm rises, you can feed back some ignition timing. How much depends on a lot of factors.
Reply
Old Jul 7, 2009 | 12:13 PM
  #3  
Evo8luva's Avatar
Evolving Member
iTrader: (6)
 
Joined: Sep 2006
Posts: 273
Likes: 0
From: Chicago burbs'
Agreed with above^
3* at peak seems pretty normal, but not increasing gradually as rpm climbs/boost tapers isn't right. 11* at 7500 might be all the timing your 91 can take at 20-22psi (or whatever it ends up at the top) but it sitting at 3* from say 3500~ to 6000 is weird. It doesn't boost creap or spike up real bad in that area, does it?
I know my built motor, big cam, IX turbo doesn't like more then 12-13* at 7500 on c
93 and 21psi. But my timing map is real smooth from 1-2* at peak and ramps up to 13, the graph looks completly flat there too.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
mines5
Evo Engine / Turbo / Drivetrain
10
Mar 21, 2017 06:30 AM
blackbalts
Evo Engine / Turbo / Drivetrain
2
Jun 28, 2016 09:17 AM
Guitarplyr
Evo Engine / Turbo / Drivetrain
3
Dec 18, 2013 02:50 PM
MREvo2k6
For Sale - Part Outs
11
Aug 3, 2007 08:18 AM
Sentinal
Lancer Audio and Security (All models)
8
Sep 11, 2004 12:43 AM




All times are GMT -7. The time now is 11:33 PM.