Boss 302 Track Key - MustangForums.com



2005-2014 Mustangs Discussions on the latest S197 model Mustangs from Ford.

Reply
 
 
 
Thread Tools Search this Thread
Old 03-27-2011, 09:13 AM   #1  
8178A
3rd Gear Member
Thread Starter
 
Join Date: May 2007
Location:
Posts: 724
Default Boss 302 Track Key

Anyone know what kind of changes are made to the cam timing when the Boss 302 Track Key is used?

Expect they must advance the intake cam and retard the exhaust cam to increase the valve timing overlap duration.

http://www.2012boss.com/blog/ford-tr...302-race-mode/ and http://www.youtube.com/watch?v=PiWSr-Ax8K4

Last edited by 8178A; 03-27-2011 at 11:00 AM.
8178A is offline   Reply With Quote
Old 03-27-2011, 12:08 PM   #2  
JWButler14
3rd Gear Member
 
JWButler14's Avatar
 
Join Date: Feb 2010
Location: Macon, Ga.
Posts: 556
Default

that video makes me want a Boss even more
JWButler14 is offline   Reply With Quote
Old 03-27-2011, 12:20 PM   #3  
JIM5.0
5th Gear Member
 
JIM5.0's Avatar
 
Join Date: Jul 2010
Location: Texas
Posts: 4,404
Default

Quote:
Originally Posted by 8178A View Post
Anyone know what kind of changes are made to the cam timing when the Boss 302 Track Key is used?

Expect they must advance the intake cam and retard the exhaust cam to increase the valve timing overlap duration.
Actually, to add more are under the torque curve in the low RPM bandwidth, which is all TracKey tune does, you want less cam lobe overlap so as far as cam LSA timing changes, they increase the LSA some to mitigate waste of raw unburnt fuel-air from being over scavenged out of the cylinder. So, in reality, they will either advance the intake came, or retard the exhaust cam, or both, in relation to crank angle to get that wider LSA.
But I am sure their is much more to it: tweaking the spark to RPM curve, throttle setting to RPM curve, fuel injection to RPM curve, and possible several more tables are adjusted in the TracKey tune to get that lower end torque increase.

Now, as for simply the cam timing as far as cam profile (lift, duration, ramp opening and closing rates), the Boss 302 only has the exhaust cam modified with a different profile (lobe cut). I believe the intake cam is exactly the same profile as the stock 5.0 GT Coyote engine cam.
Just exactly what are the exhaust cam profile specs, nobody knows right now, at least not until someone gets their hands on a Boss 302 engine, breaks it open, extracts the exhaust cam, and degrees it in detail

Last edited by JIM5.0; 03-27-2011 at 12:23 PM.
JIM5.0 is offline   Reply With Quote
Old 03-27-2011, 02:37 PM   #4  
wcgman
5th Gear Member
 
wcgman's Avatar
 
Join Date: Mar 2006
Location: Colorado
Posts: 2,652
Default

And why would I ever need the stock key again? lol.
wcgman is offline   Reply With Quote
Old 03-27-2011, 04:51 PM   #5  
JIM5.0
5th Gear Member
 
JIM5.0's Avatar
 
Join Date: Jul 2010
Location: Texas
Posts: 4,404
Default

If you like the improved low end torque performance of TracKey, you don't need the stock key.

What you can do is this: load up an aftermarket race tune in the stock key tune's position so with TracKey, you have a stock performance tune which you can use for cruising around and showing off, but in the normal tune position, the race tune will be there just by switching the keys! No plugging into the OBD2 port to load up another tune!
JIM5.0 is offline   Reply With Quote
Old 03-27-2011, 08:17 PM   #6  
8178A
3rd Gear Member
Thread Starter
 
Join Date: May 2007
Location:
Posts: 724
Default

Quote:
Originally Posted by JIM5.0 View Post
Actually, to add more are under the torque curve in the low RPM bandwidth, which is all TracKey tune does, you want less cam lobe overlap so as far as cam LSA timing changes, they increase the LSA some to mitigate waste of raw unburnt fuel-air from being over scavenged out of the cylinder. So, in reality, they will either advance the intake came, or retard the exhaust cam, or both, in relation to crank angle to get that wider LSA.
But I am sure their is much more to it: tweaking the spark to RPM curve, throttle setting to RPM curve, fuel injection to RPM curve, and possible several more tables are adjusted in the TracKey tune to get that lower end torque increase.

Now, as for simply the cam timing as far as cam profile (lift, duration, ramp opening and closing rates), the Boss 302 only has the exhaust cam modified with a different profile (lobe cut). I believe the intake cam is exactly the same profile as the stock 5.0 GT Coyote engine cam.
Just exactly what are the exhaust cam profile specs, nobody knows right now, at least not until someone gets their hands on a Boss 302 engine, breaks it open, extracts the exhaust cam, and degrees it in detail
I was referring to the idle setting of the cam timing.
8178A is offline   Reply With Quote
Old 03-27-2011, 08:23 PM   #7  
8178A
3rd Gear Member
Thread Starter
 
Join Date: May 2007
Location:
Posts: 724
Default

You would think that Brenspeed and others should be able to offer the two key solution too.
8178A is offline   Reply With Quote
Old 03-28-2011, 06:13 AM   #8  
JIM5.0
5th Gear Member
 
JIM5.0's Avatar
 
Join Date: Jul 2010
Location: Texas
Posts: 4,404
Default

Quote:
Originally Posted by 8178A View Post
I was referring to the idle setting of the cam timing.
In idle, you can decrease LSA to get the big block hotrod lop, which I assume some tuners purposefully do. But that lop unfortunately destroys low end torque at the line. At idle, the LSA would be set wider and all the other parameters adjusted accordingly tfor a smooth idle, least fuel burned, but when you step on it from a stop sign, you get as much instant torque as possible.
Once you hit higher RPM bandwidths, that is when the LSA is closed in for the much quicker opening and closing rates of the valves and to also account for the inertia exhibited by the mass of the fuel-air mix.
JIM5.0 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Vintage AC shop referral - frontrunner serpentine system bradleyb Classic Mustangs (Tech) 3 11-27-2015 07:50 PM
Vintage AC shop referral in los angeles bradleyb California Regional Chapter 0 10-01-2015 01:02 AM
Moroso... PBIR... Track night? CS2007 Florida Regional Chapter 0 09-29-2015 12:06 PM
20 inch Wheels a mistake on 2015 Mustang GT? mungodrums The New S550 2015-2017 Mustang 10 09-28-2015 10:54 PM
What is the difference between Ford Racing 2015 Street Handling vs Track Handling ? mungodrums Suspension 0 09-24-2015 10:12 PM


Tags
2011, 2012, 302, bos, boss, engineer, exhaust, ey, interview, key, mustang, speed, top, trac, track, video

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Advertising
Featured Sponsors
Vendor Directory

All times are GMT -5. The time now is 09:07 PM.


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.