Re: Charger with 440 won't pull and rev enough?
[Re: Mr.Yuck]
#1236074
05/21/12 02:29 PM
05/21/12 02:29 PM
|
Joined: Jul 2008
Posts: 179 Up in the North and Far Away
AutoEngineer
OP
member
|
OP
member
Joined: Jul 2008
Posts: 179
Up in the North and Far Away
|
Quote:
well you are losing at least 4 tenths at the 60 foot mark. You should be around the 1.65 60 foot. Now on to the rpm problem...I'd think if you had a fuel problem it would be ok thru 1st and maybe 2nd. From my experience when you have a poo poo pump it's at 3/4 track when you find out. Are you running it w/ an air cleaner assembly? If so remove it and run just the base plate. I'd think with that MPh you should be real low into the 12's and if you can pick up 2-3 mph maybe high 11's.
The track was very slippery like all those old airfield tracks we have here around. They don't have even close to that traction you have with dedicated and prepped race tracks. That's one reason why I like running the cams in the straight up position or slightly retarded. Advancing the cam will only add low end torque and possibly even worsen the traction problems. I might be also testing a taller gear ratio like 3.55 after solving first this rpm problem. On a slippery track it's really difficult to have a good launch and hook hard.
After this rpm problem is history, I assume it will pick up some mph's, because it was almost 200ft before going through the lights when it hit like a wall. At the moment I can only imagine what the ET would had been, IF would had driven on a prepped track and without that rpm problem.
Was running it w/ an air cleaner assembly like this http://www.knfilters.com/images/l/66-3000.jpg
|
|
|
Re: Charger with 440 won't pull and rev enough?
[Re: AutoEngineer]
#1236076
05/21/12 03:43 PM
05/21/12 03:43 PM
|
Joined: Aug 2003
Posts: 43,292 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,292
Bend,OR USA
|
I hate to tell you that the M/T ET Street radials don't work worth a hoot on a bad track, the regular ET streets do a lot better I have both types for my car, I run the radials on the good tracks, 1.39 60 fts and the bias plys on the bad tracks, 1.43 60 ft on the same track, same day. The radials won't run 1.60 on a bad track where the bias will run 1.49 to 1.52 Does the motor hit the same RPM limits in all gears or just high gear ? If in high gear only look at the fuel system, if the same in all gears look at the ignition sytem or tach Good luck on getting that rat motor rascal Put the hammer to him
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
Re: Charger with 440 won't pull and rev enough?
[Re: Cab_Burge]
#1236077
05/22/12 01:37 PM
05/22/12 01:37 PM
|
Joined: Jul 2008
Posts: 179 Up in the North and Far Away
AutoEngineer
OP
member
|
OP
member
Joined: Jul 2008
Posts: 179
Up in the North and Far Away
|
Quote:
I hate to tell you that the M/T ET Street radials don't work worth a hoot on a bad track, the regular ET streets do a lot better I have both types for my car, I run the radials on the good tracks, 1.39 60 fts and the bias plys on the bad tracks, 1.43 60 ft on the same track, same day. The radials won't run 1.60 on a bad track where the bias will run 1.49 to 1.52 Does the motor hit the same RPM limits in all gears or just high gear ? If in high gear only look at the fuel system, if the same in all gears look at the ignition sytem or tach Good luck on getting that rat motor rascal Put the hammer to him
Practically it's nearly the same in all gears, about 5500 rpm and hits like wall. Almost like there would be a rev limiter somewhere ... But if it's being rev'd in neutral, it takes in the twinkling of an eye over 6500 rpm
Have tested an other ECU, coil, ballast, dist, triple checked the wiring of all ign components, everything EXCEPT the tach. It's a replacement Tic-Toc-Tachometer from Y1. Used a Sun tach to compare the reading of it when installed, and there was non to mention.
Could it really be so easy solution that the tach would cause the rpm problem? In theory the answer is yes, but how about in practice, has anyone had such a problem caused by the tach?
However, it will be easy to disconnect that Tic-Toc-Tachometer from the coil
|
|
|
Re: Charger with 440 won't pull and rev enough?
[Re: AutoEngineer]
#1236078
05/22/12 02:33 PM
05/22/12 02:33 PM
|
Joined: Aug 2003
Posts: 43,292 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,292
Bend,OR USA
|
Quote:
Quote:
I hate to tell you that the M/T ET Street radials don't work worth a hoot on a bad track, the regular ET streets do a lot better I have both types for my car, I run the radials on the good tracks, 1.39 60 fts and the bias plys on the bad tracks, 1.43 60 ft on the same track, same day. The radials won't run 1.60 on a bad track where the bias will run 1.49 to 1.52 Does the motor hit the same RPM limits in all gears or just high gear ? If in high gear only look at the fuel system, if the same in all gears look at the ignition sytem or tach Good luck on getting that rat motor rascal Put the hammer to him
Practically it's nearly the same in all gears, about 5500 rpm and hits like wall. Almost like there would be a rev limiter somewhere ... But if it's being rev'd in neutral, it takes in the twinkling of an eye over 6500 rpm
Have tested an other ECU, coil, ballast, dist, triple checked the wiring of all ign components, everything EXCEPT the tach. It's a replacement Tic-Toc-Tachometer from Y1. Used a Sun tach to compare the reading of it when installed, and there was non to mention.
Could it really be so easy solution that the tach would cause the rpm problem? In theory the answer is yes, but how about in practice, has anyone had such a problem caused by the tach?
However, it will be easy to disconnect that Tic-Toc-Tachometer from the coil
Disconnect that rascal and go see It wouldn't be the first time a tach caused poroblems like yours
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
|
|