Petty Cash Racing/Team NAXJA pull off an astounding 4th overall!

IXNAYXJ

IXNAYXJ

NAXJA Forum User
Location
Wherever the next race is.
DSC_03452.jpg


DSC_03652-1.jpg


DSC_05242.jpg


Full Story to follow at the Petty Cash Racing Blog.

-Matt
 
Right on Team. Pretty damned good, for a station wagon. :)
 
Glenn B said:
Right on Team. Pretty damned good, for a station wagon. :)
Click to expand...
Thanks, but it was pretty brutal. We ran perfectly...and still only came in 2nd in class. The Organizers accidentally put a much faster car in our class (which we still almost beat...at the end of day one, we were only 9 seconds behind the fastest car on the track). What we really need now is horsepower...we can seriously be contenders for the overall win if we had 50 more ponies.

We have two weeks before our next race in Denver...if anybody or company wants to see an XJ be the first ever vehicle in the history of 24 Hours of LeMons to win both Index of Effluency AND the Overall win, let me know and let's make it happen. Our only chance is at the Denver race in two weeks...whatcha got?

DSC_07512.jpg


-Matt
 
Best of luck in Denver!
So close, wish I could make it.
 
What year XJ? If it is a Renix, make sure you are running the high altitude CPS, otherwise cut and move the CPS to give you a couple of more degrees of advance, especially at this altitude. Maybe an adjustable MAP sensor and a few minutes on a dyno to get your mixture right for this altitude. Pull the head and put in the thin Mopar head gasket. Maybe extend the pan down a couple of inches along with the oil pickup and add a windage tray. While you have the head off, touch up the ports and port match to the intake and exhaust. That should all of these together should give you maybe a 20 hp increase from where you are. Its cheating but a 4.2L crank and rods and a set of H802CP pistons. That mod could give you a lot more than 50 hp.
 
old_man said:
What year XJ? If it is a Renix, make sure you are running the high altitude CPS, otherwise cut and move the CPS to give you a couple of more degrees of advance, especially at this altitude. Maybe a MAP sensor and a few minutes on a dyno to get your mixture right for this altitude. Pull the head and put in the thin Mopar head gasket. Maybe extend the pan down a couple of inches along with the oil pickup and add a windage tray.
Click to expand...
Yeah, it's an '89. We ran at Reno which was 5000 feet and didn't do anything, but I'm all about making it a little quicker. Unfortunately I won't have the time between now and leaving for the race next week to fiddle with it...anybody in the Denver area want to help us out?

-Matt
 
The CPS is DEFINATELY worth the few bucks and 20 minutes to replace. IIRC I can score one from a local factory parts guy for around $50 or less.

Maybe someone around here has a junkyard pulled sensor they would donate.
 
old_man said:
The CPS is DEFINATELY worth the few bucks and 20 minutes to replace. IIRC I can score one from a local factory parts guy for around $50 or less.

Maybe someone around here has a junkyard pulled sensor they would donate.
Click to expand...
Good info, I honestly didn't realize there was a different CPS for higher altitude.

-Matt
 
It gives you several more degrees of timing advance which is really needed at higher elevations. Doesn't hurt the performance at lower levels either.
 
IIRC, the mounting bracket is the same and the sensor is just attached a few degrees farther over. If you can score one, mark the one you remove and create a template to modify standard ones-- it should be much easier to locate and modify standard ones in the future.
 
You must log in or register to reply here.

Similar threads

1
Feeler for sale of my XJ crawler.
Replies
0
Views
474
1-tonxj
1
N
The XJ Unibody Chassis
Replies
0
Views
551
NAXJA_Archives
N
N
  • Locked
Lowering An XJ
Replies
0
Views
392
NAXJA_Archives
N
macgyvr
NAXJA Elections - 2021
Replies
2
Views
2K
macgyvr
macgyvr
Saudade
Speedo Deado
Replies
4
Views
2K
Anak
Anak
Back
Top