Go Back  Offshoreonly.com > Technical > General Q & A
Holley EFI Timing tables. Can anyone share what they run >

Holley EFI Timing tables. Can anyone share what they run

Notices

Holley EFI Timing tables. Can anyone share what they run

Old 09-05-2020, 12:28 AM
  #1  
Registered
Thread Starter
iTrader: (4)
 
Join Date: Jun 2012
Posts: 418
Likes: 0
Received 2 Likes on 2 Posts
Talking Holley EFI Timing tables. Can anyone share what they run

Holley EFI Timing tables. Can anyone share what they run. I am interested in values that everyone is running on NA setups.Here is mine on 502 with afr heads.

cyrus77 is offline  
Old 09-07-2020, 07:52 PM
  #2  
Registered
iTrader: (1)
 
Join Date: Nov 2004
Location: Lago Vista TX
Posts: 911
Received 42 Likes on 21 Posts
Default

Mine was supercharged so I don't know if it'll help any

If you send me your email I can shoot over my HEFI file...


Doug
Boatally Insane is offline  
Old 09-07-2020, 08:13 PM
  #3  
Registered
iTrader: (1)
 
Join Date: Jun 2009
Location: Chicago
Posts: 7,075
Received 1,424 Likes on 375 Posts
Default

Can you post one with PSI instead of kpa..
ICDEDPPL is offline  
Old 09-08-2020, 03:24 PM
  #4  
Platinum Member
Platinum Member
iTrader: (1)
 
articfriends's Avatar
 
Join Date: Jun 2004
Location: Frankenmuth
Posts: 6,525
Received 97 Likes on 58 Posts
Default

I can tell you this, when I dyno they usually like more like around, 28 in midrange approaching tq peak (below it) and 32, 33 w afr heads after 4800, 5000(I think thats what you told me you had for heads, Smitty)
articfriends is offline  
Old 09-08-2020, 09:38 PM
  #5  
Registered
iTrader: (1)
 
Join Date: Jun 2009
Location: Chicago
Posts: 7,075
Received 1,424 Likes on 375 Posts
Default

Personally what my motors wants for timing is still a damn mystery to me.
30* at 4000 and 2# of boost or 27* ?? I have no ducking clue lol.
This past weekend I made a switch to add 3* of timing , (at any speed)
was data logging it , adding 3* and seeing if rpm increased indicating the engine likes it .. but I would need calm water (not happening on lake michigan) and a bunch of time to get this testing done .
I think next I`ll pull timing and see what happens.

Data log: Purple: timing switch on
Yellow : timing
Green: RPM
29* at 4000 increased to 32* not change in rpm. Maybe it wants less than 29*
Only thing I noticed is the EGTS dropped 20-25* but that don`t tell me a whole lot

Artic you do a lot of dyno testing , any info you can share ?





The bump is a wave
Timing goes up (yellow) but RPM never changes (green)
ICDEDPPL is offline  
Old 09-08-2020, 09:47 PM
  #6  
Registered
 
Join Date: Jan 2006
Posts: 2,658
Received 136 Likes on 84 Posts
Default

less timing will raise the egt's,,if anything,,go up a degree or 2.you won't see much in speed or rpm,you'll just make your exhaust valves happy.
I usually dyno tune for the timing table and get the afr's some what correct.then in the boat I make the afr's right and leave timing alone,unless i'm bouncing off the knock sensor.
sutphen 30 is offline  
Old 09-16-2020, 05:09 PM
  #7  
Registered
 
Join Date: May 2018
Posts: 137
Received 18 Likes on 12 Posts
Default

can you give us more info on cam specs, compression etc? idle area should be about the same otherwise you start surge and it makes your IAC work overtime and I wonder if you are using idle timing adjustments or if you have the turned off. also you sheet should basically be lock out and not growing otherwise you are not getting the best out of your engine.
Cerberus66 is offline  
Old 09-20-2020, 08:56 AM
  #8  
VIP Member
VIP Member
 
b18cls1's Avatar
 
Join Date: May 2007
Location: Stuart, fl
Posts: 249
Received 33 Likes on 20 Posts
Default

Originally Posted by ICDEDPPL View Post
Personally what my motors wants for timing is still a damn mystery to me.
30* at 4000 and 2# of boost or 27* ?? I have no ducking clue lol.
This past weekend I made a switch to add 3* of timing , (at any speed)
was data logging it , adding 3* and seeing if rpm increased indicating the engine likes it .. but I would need calm water (not happening on lake michigan) and a bunch of time to get this testing done .
I think next I`ll pull timing and see what happens.

Data log: Purple: timing switch on
Yellow : timing
Green: RPM
29* at 4000 increased to 32* not change in rpm. Maybe it wants less than 29*
Only thing I noticed is the EGTS dropped 20-25* but that don`t tell me a whole lot

Artic you do a lot of dyno testing , any info you can share ?





The bump is a wave
Timing goes up (yellow) but RPM never changes (green)

if egt drops when timing is added then you were under timed. You have to look at dimisnishing return for egt vs deg.
b18cls1 is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.