|
06-01-2018, 10:13 AM | #11 |
VIP Member
Join Date: Jan 2003
Location: Allentown,PA
Posts: 2,438
Likes: 780
Liked 703 Times in 206 Posts
|
Re: A/F readout delay
Marty , possibly because I'm reading 10" from the port as opposed to the collector.
I also have a brand new sensor installed for this race. I looked at a few runs from last week and they were closer to .014 seconds ,so age can defiantly be a factor. '
__________________
Tom Goldman 1500 SG , 1506 STK |
06-01-2018, 10:57 AM | #12 |
Member
Join Date: Nov 2002
Location: Freeport, IL
Posts: 457
Likes: 536
Liked 149 Times in 34 Posts
|
Re: A/F readout delay
Thanks Tom!
__________________
Marty Buth 3657 STK |
06-01-2018, 11:05 AM | #13 |
Veteran Member
Join Date: Mar 2005
Location: Sand Springs, OK
Posts: 8,132
Likes: 896
Liked 389 Times in 168 Posts
|
Re: A/F readout delay
So, Tom, your only looking at one cylinder?
You use a carburetor? I am not sure why you would choose that, over the round part of the collector, past the transition section.
__________________
Ed Wright 4156 SS/JA Last edited by Ed Wright; 06-01-2018 at 11:12 AM. |
06-01-2018, 12:08 PM | #14 |
VIP Member
Join Date: Nov 2002
Location: Massapequa Park,NY
Posts: 1,206
Likes: 1,738
Liked 822 Times in 264 Posts
|
Re: A/F readout delay
If to close to end of collector it will give you a false reading at speed..........ask me how I know.
__________________
1989 Camaro Iroc-Z I/SA B&B Auto Machine Shop. |
06-01-2018, 01:21 PM | #15 |
Veteran Member
Join Date: Mar 2005
Location: Sand Springs, OK
Posts: 8,132
Likes: 896
Liked 389 Times in 168 Posts
|
Re: A/F readout delay
At the end of the transition area being too close to the end of the collector = too short collectors. Right where the collector goes round would not be too close to the end on any headers I've ever seen. In the primary tubes only shows you that one cylinder. How darn short are your collectors? 10" or so from the end of the collectors will be OK going down the track WOT. Will show bogus Lean at idle & on the return road due to clean air being sucked back in during cam overlap cycles.
__________________
Ed Wright 4156 SS/JA |
06-01-2018, 03:43 PM | #16 | |
VIP Member
Join Date: Nov 2002
Location: Massapequa Park,NY
Posts: 1,206
Likes: 1,738
Liked 822 Times in 264 Posts
|
Re: A/F readout delay
Quote:
__________________
1989 Camaro Iroc-Z I/SA B&B Auto Machine Shop. |
|
06-01-2018, 06:04 PM | #17 |
VIP Member
Join Date: Jan 2003
Location: Allentown,PA
Posts: 2,438
Likes: 780
Liked 703 Times in 206 Posts
|
Re: A/F readout delay
Ed , I run O2's in two of the primary's. I use the primary because when running on a throttle stop the reading in the collector will give a false lean reading .
When at WOT the primary and collector readings are fairly close. …..I run the collector O2 right at the leading edge of the merge.
__________________
Tom Goldman 1500 SG , 1506 STK |
06-02-2018, 07:41 PM | #18 |
Veteran Member
Join Date: Mar 2005
Location: Sand Springs, OK
Posts: 8,132
Likes: 896
Liked 389 Times in 168 Posts
|
Re: A/F readout delay
[QUOTE=Glenn Briglio;564343]After the diverge they are 4" , which is where the O2 is mounted.[/QUOTE
Automatic car? Might want to test some collector extensions.
__________________
Ed Wright 4156 SS/JA |
|
|