Re: FiTech w/timing control on LA 360 - What distributor?
[Re: GoodysGotaCuda]
#2456697
02/24/18 03:09 PM
02/24/18 03:09 PM
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Joined: Nov 2003
Posts: 10,228 Colleyville
3hundred
I Live Here
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I Live Here
Joined: Nov 2003
Posts: 10,228
Colleyville
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Here's one example MSD 8534 The FI requires an electrically clean signal. You can probably find something similar and cheaper to the MSD if needed. Robert
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Re: FiTech w/timing control on LA 360 - What distributor?
[Re: UCUDANT]
#2456747
02/24/18 04:42 PM
02/24/18 04:42 PM
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Joined: Nov 2004
Posts: 25,050 Texas
GoodysGotaCuda
OP
5.7L Hemi, 6spd
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OP
5.7L Hemi, 6spd
Joined: Nov 2004
Posts: 25,050
Texas
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I use an MSD, you just perform a minor disassembly to lock it down. You can then set base where you need it and program the unit with the curve and max timing settings you want. This may be elementary, but how is the FiTech handling timing with a locked out distributor? Is the spark jumping that far within the cap? If I set my base timing on a locked distributor at 15° and want 35° at cruise, that's 20° the spark has to jump from the rotor to the plug port on the dist cap, because the rotor is no longer moving. Do you have a p/n for the MSD distributor?
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Re: FiTech w/timing control on LA 360 - What distributor?
[Re: GoodysGotaCuda]
#2456864
02/24/18 07:04 PM
02/24/18 07:04 PM
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Joined: Jan 2003
Posts: 28,068 Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,068
Irving, TX
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If I set my base timing on a locked distributor at 15° and want 35° at cruise, that's 20° the spark has to jump from the rotor to the plug port on the dist cap, because the rotor is no longer moving.
Remember that you're setting timing by the crank and the cam runs at 1/2 crank speed. The spark would have to jump half the timing lead. Your 20* at the crank becomes 10* in the distributor.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: FiTech w/timing control on LA 360 - What distributor?
[Re: 68KillerBee]
#2456997
02/24/18 10:59 PM
02/24/18 10:59 PM
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Joined: Nov 2004
Posts: 25,050 Texas
GoodysGotaCuda
OP
5.7L Hemi, 6spd
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OP
5.7L Hemi, 6spd
Joined: Nov 2004
Posts: 25,050
Texas
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Remember that you're setting timing by the crank and the cam runs at 1/2 crank speed.
The spark would have to jump half the timing lead. Your 20* at the crank becomes 10* in the distributor. Good point, that is what I was overlooking! Goody, join fitech owners group on facebook. Decent amount of mopar guys on there that can help. As these mopars are trickier when using original equipment. I am on there actually, but just lurking. It seems like a lot of complaining or people that haven't got a clue how an engine runs.
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Re: FiTech w/timing control on LA 360 - What distributor?
[Re: Twostick]
#2457187
02/25/18 08:34 AM
02/25/18 08:34 AM
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Joined: Nov 2004
Posts: 25,050 Texas
GoodysGotaCuda
OP
5.7L Hemi, 6spd
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OP
5.7L Hemi, 6spd
Joined: Nov 2004
Posts: 25,050
Texas
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You should really use a distributor that you can adjust the rotor phasing on. Locking the timing at 36 is all well and good but the ECM has to pull timing out to make the curve and when the engine is at speed the time it takes the ECM to calculate this can use up 10 degrees of rotation. This can put the rotor too far from it's intended tower.
I used an MSD billet with a Cap a Dapt and an adjustable rotor.
A crank trigger can eliminate that plus it will supply a clean tach signal which is critical. It can also allow a coil near plug arrangement if the Fitech ECM will support it.
Kevin Do you have a part number for your MSD parts? I'm questioning if timing control is even worth it with an FiTech. - Overall it still seems like pretty crude control and is overcomplicating something that a distributor does just fine [for the application].
- Our goal is simply better drivability in any condition with very long road trips in mind.
- If something hiccups with the FiTech ignition control, we are hosed.
- Whereas a stock ignition ecu is cheap, readily available and easy to change.
Thoughts?
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Re: FiTech w/timing control on LA 360 - What distributor?
[Re: UCUDANT]
#2457206
02/25/18 11:11 AM
02/25/18 11:11 AM
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Joined: May 2005
Posts: 4,734 Florida
BDW
master
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master
Joined: May 2005
Posts: 4,734
Florida
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Timing control is nice. I can from the drivers seat bump change idle RPM, or say max timing at the track I tried to read through the Facebook stuff and couldn't make sense of it. I'm not using the timing control, just the Mopar performance ignition I already had. What changes/parts did you make for timing control? I saw so many posts saying it didn't work with FiTech.
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Re: FiTech w/timing control on LA 360 - What distributor?
[Re: BDW]
#2457220
02/25/18 11:47 AM
02/25/18 11:47 AM
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Joined: Nov 2004
Posts: 25,050 Texas
GoodysGotaCuda
OP
5.7L Hemi, 6spd
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OP
5.7L Hemi, 6spd
Joined: Nov 2004
Posts: 25,050
Texas
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Timing control is nice. I can from the drivers seat bump change idle RPM, or say max timing at the track I tried to read through the Facebook stuff and couldn't make sense of it. I'm not using the timing control, just the Mopar performance ignition I already had. What changes/parts did you make for timing control? I saw so many posts saying it didn't work with FiTech. Do you have the FiTech that supports timing? it's a little more expensive than the base unit.
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Re: FiTech w/timing control on LA 360 - What distributor?
[Re: BDW]
#2457303
02/25/18 02:17 PM
02/25/18 02:17 PM
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Joined: May 2003
Posts: 6,566 Downtown Roebuck Ont
Twostick
Still wishing...
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Still wishing...
Joined: May 2003
Posts: 6,566
Downtown Roebuck Ont
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Yes , I have the 600hp system. If you try to read through Facebook or the 20+ thread on Abodies, it's a mixture of success or failure. Some talk about buying special wiring because of the poor noise immunity of the FiTech input.
Maybe I have ADD, just didn't see a clear cut solution. ANY system that uses the distributor pickup for a tach signal is going to have serious electronic noise issues. The inside of a distributor cap is basically a lightning factory. I had to run a shielded coaxial cable on mine spliced in as close to the pickup as possible to get a usable signal. Kevin
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Re: FiTech w/timing control on LA 360 - What distributor?
[Re: GoodysGotaCuda]
#2457308
02/25/18 02:27 PM
02/25/18 02:27 PM
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Joined: May 2003
Posts: 6,566 Downtown Roebuck Ont
Twostick
Still wishing...
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Still wishing...
Joined: May 2003
Posts: 6,566
Downtown Roebuck Ont
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You should really use a distributor that you can adjust the rotor phasing on. Locking the timing at 36 is all well and good but the ECM has to pull timing out to make the curve and when the engine is at speed the time it takes the ECM to calculate this can use up 10 degrees of rotation. This can put the rotor too far from it's intended tower.
I used an MSD billet with a Cap a Dapt and an adjustable rotor.
A crank trigger can eliminate that plus it will supply a clean tach signal which is critical. It can also allow a coil near plug arrangement if the Fitech ECM will support it.
Kevin Do you have a part number for your MSD parts? I'm questioning if timing control is even worth it with an FiTech. - Overall it still seems like pretty crude control and is overcomplicating something that a distributor does just fine [for the application].
- Our goal is simply better drivability in any condition with very long road trips in mind.
- If something hiccups with the FiTech ignition control, we are hosed.
- Whereas a stock ignition ecu is cheap, readily available and easy to change.
Thoughts? I don't recall the MSD part# but it's probably older than you are. It used the old GM points style distributor cap with the window in the side. If you Google MSD " Cap-a-Dapt " and adjustable rotor, you should turn up some part numbers. Kevin
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