Author Topic: My 427 SOHC Build..... Finally the time has come!  (Read 776430 times)

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Royce

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1620 on: August 25, 2016, 08:14:58 AM »
bad alternator or alternator not getting current from ignition on ???
1955 Thunderbird Competition Coupe Altered Chassis "War Bird" 383 Lincoln Y block 520 hp
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Heo

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1621 on: August 25, 2016, 08:15:10 AM »
Is it charging if you give it some rpm? i have that problem
right now. I put a new alternator in my sisters Mercedes
and idling the dash flashes red and  warning for
no charge. It goes away if i give it some rpm
I guess faulty Alternator although its new
multimeter shows 12.4 idling 13,7 with some RPM
The diagnos with the laptop shows the same
the relay cuts in at around 1200 rpm



The defenition of a Gentleman, is a man that can play the accordion.But dont do it

cobracammer

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1622 on: August 25, 2016, 11:21:27 AM »
Brand new alternator and a fresh new signal wire run from the passenger side mini buss bar to the signal wire on the alternator.  When driving the car, handheld shows 11.8 volts while driving at speed, but as soon as I hop out and test battery with the multimeter, it shows 12.42.  I guess I can first use the multimeter to test the power stud on the back of the alternator while the car is running.  If that shows 13+ volts, then I guess ill need to run a fresh 8 or 4 gauge power wire straight to the battery?

I am cutious why the handheld shows 11.8 when the battery shows 12.42 at the same time  lol
Jason
2005 Saleen S281 (427 SOHC 2 X 4 EFI swap), T56 Magnum XL 6 speed, 9" Currie rear with 3.89 Gears

turbohunter

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1623 on: August 25, 2016, 12:05:20 PM »
Jeez O flips that thing sounds nice.
I had an '05 Saleen and it didn't sound anything like that.
Gee and mine had a "cammer" too ;)
Been a long trip with some miles to go but really a cool car.
Marc
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My427stang

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1624 on: August 25, 2016, 04:11:17 PM »
If the alternator is wired correctly, use your test light to make sure the key-on-engine-running wire (hell, all wires)have power

If they all have power, then the alternator or internal regulator is bad.  If they don't, chase the wire
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Ross
Bullock's Power Service, LLC
- 70 Fastback Mustang, 489 cid FE, Victor, SEFI, Erson SFT cam, TKO-600 5 speed, 4.11 9 inch.
- 71 F100 shortbed 4x4, 461 cid FE, headers, Victor Pro-flo EFI, Comp Custom HFT cam, 3.50 9 inch

cobracammer

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1625 on: August 26, 2016, 07:46:33 AM »
Thanks Ross,

This will be right up your alley also....  I spoke with a Tech at FAST about the efi settings.  I went over each value (as seen on the handheld in the youtube video).  The only one he had an issue with was the IAC.  He said it should be between 15-20 and my currently reads between 30-35.  What had happened was during the setup, the instructions ask you to start the car.  After starting the car (on larger engines), if it will not stay running, you have to turn the throttle blade adjustment screws so that the car will stay running at your chosen idle speed.  After you adjust the screw, you should shut off the system and recalibrate the Throttle position sensor.  This is something I did not do.  So the car would randomly rev up to like 1200 to 1300 RPS.  So I will re-calibrate this weekend.

Also, I explained to him that in 1st gear, there was almost a kind of hesitation.  Gears 2-4 (at this point I haven't gotten to highway speeds ), the engine purrs like a Tiger.

He explained that the EFI system is programed to give  a boost of fuel on acceleration.  this was prob bogging the engine down a little in 1st gear.  He suggested I go into the advanced settings and adjust the "Accel fuel" to -2 or -3 and this should solve the issue.


In other news, The radiator fans sufficiently cool the engine.  in the driveway sitting still after a drive, the fans were slowly cooling the engine down.  by the time I shut the car off, I was around 209 degrees, and I am not sure if it would still keep going down.  At some point, the relay will tun off the push fan and we should be ok. 

Also, I ordered a new 4 gauge alternator wire that feeds the battery with a built in fuse block.  I will most definitely check the voltage on the alternator, but even if the alternator is bad, I will want the new alternator to feed the battery directly and not go through the OEM wiring like it does now.

more to come but good stuff at this point  :0)
Jason
2005 Saleen S281 (427 SOHC 2 X 4 EFI swap), T56 Magnum XL 6 speed, 9" Currie rear with 3.89 Gears

My427stang

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1626 on: August 26, 2016, 10:59:31 AM »
Sounds good

However, do not adjust the accel fuel until you calibrate the TPS, you may not need to

Remember the TPS tells the ECM what the human is trying to do, all other sensors are based on what the engine is doing.  So when you change something like throttle plate setting without recalibrating, the ECM is reading something different compared to what your foot is doing

You may need to adjust accel fuel later, but recalibrate and try it first
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Ross
Bullock's Power Service, LLC
- 70 Fastback Mustang, 489 cid FE, Victor, SEFI, Erson SFT cam, TKO-600 5 speed, 4.11 9 inch.
- 71 F100 shortbed 4x4, 461 cid FE, headers, Victor Pro-flo EFI, Comp Custom HFT cam, 3.50 9 inch

cobracammer

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1627 on: August 26, 2016, 11:44:10 AM »
Awesome.  Good to know.  I will recalibrate the TPS first.  Hopefully with the calibration, the IAC will automatically correct to be around 15-20.  Then take her for a quick drive down the street to see if 1st gear is still a boggy.  If so, then I will adjust the accel fuel.  Thanks again  :0)
Jason
2005 Saleen S281 (427 SOHC 2 X 4 EFI swap), T56 Magnum XL 6 speed, 9" Currie rear with 3.89 Gears

My427stang

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1628 on: August 26, 2016, 02:27:25 PM »
Also remember if you were having electrical issues, things can often get a little wonky. 

So I'd

1 - Fix alternator, ensure it's charging around 14.0-14.5
2 - Once things are stable and you are happy with charging, recalibrate TPS
3 - Make decisions from there.
---------------------------------
Ross
Bullock's Power Service, LLC
- 70 Fastback Mustang, 489 cid FE, Victor, SEFI, Erson SFT cam, TKO-600 5 speed, 4.11 9 inch.
- 71 F100 shortbed 4x4, 461 cid FE, headers, Victor Pro-flo EFI, Comp Custom HFT cam, 3.50 9 inch

cobracammer

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1629 on: August 26, 2016, 05:55:54 PM »
Just an FYI, I was screwing around in the garage tonight, and I noticed i could turn the waterpump pulley and the alternator pulley by hand, and it slides around the crank pulley.  Im pretty sure thats loose and you are not supposed to be able to spin the belt around while not turning the crank pulley  lol
Jason
2005 Saleen S281 (427 SOHC 2 X 4 EFI swap), T56 Magnum XL 6 speed, 9" Currie rear with 3.89 Gears

machoneman

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1630 on: August 26, 2016, 06:09:57 PM »
Correct! That alone could be the low-to-charge problem. Try to tighten that puppy up but if you can still spin the fan ....

If they are all spun aluminum pulleys (spun/CNC machined, yada-yada) you may have some difficulty getting it tight as the belt can't easily 'bite' into the sides of the grooves. One could rough up the sides of the pulleys with some wet/dry sandpaper (320 to say 600) but before doing so, be sure that the bottom of the V portion of the belt isn't bottoming out. A properly sized belt has only the sides of the V touching the pulleys when locked down. A belt that sits too deep in the pulley groves will slip!   

http://vibralign.com/wp-content/uploads/photo-1-belt-size.jpg
« Last Edit: August 26, 2016, 06:14:00 PM by machoneman »
Bob Maag

cobracammer

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1631 on: August 27, 2016, 12:15:33 PM »
Ok have some really great news and one small bit of bad news.  At this point, lets begin with the good.  Alternator was loose!  That was all.  Now13.5 volts charging !  Thanks Bob.

Second, had a cracked or bad vacuum cap between the 2 throttle bodies!  Replaced it this morning and reset the tune on the ECU.... Car now runs beautifully.

Third, took Ross's advice on the accel fuel setting, and tried a lap around the neighborhood after new tune... Still was a little "boggy" in 1st gear. Pulled back in, changed accel fuel setting to -2, and now runs pretty sweet!  ECU still learning, so only going to get better!

Now for bad news....  Oil leak.  Seems to be coming from back of the block and drippin out between scatter shield.  I checked the back of the intake, and its dry, so might be the oil galley plug on back of block.  At this time, too worn out ( 110 pages worth) to try and repair. Especially now that all else is working so well.  Maybe in future, I have a shop do it with a lift and a tranny jack.  Can't bare to pull the tranny again on my back.  Just going to enjoy the hell out of it in the fall weather!!!
« Last Edit: August 27, 2016, 06:56:38 PM by cobracammer »
Jason
2005 Saleen S281 (427 SOHC 2 X 4 EFI swap), T56 Magnum XL 6 speed, 9" Currie rear with 3.89 Gears

john a

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1632 on: August 28, 2016, 01:45:52 PM »
Congrats, I'm happy for you. I've followed this since day one, talk about a long winding road. Let us know how it goes, I'm sure it's going to be a blast.

John

cobracammer

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1633 on: August 28, 2016, 05:53:33 PM »
Thanks John 
Jason
2005 Saleen S281 (427 SOHC 2 X 4 EFI swap), T56 Magnum XL 6 speed, 9" Currie rear with 3.89 Gears

newfalconowner

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Re: My 427 SOHC Build..... Finally the time has come!
« Reply #1634 on: August 28, 2016, 07:30:35 PM »
sounds great.. Im at my stage of starting my car and going to be drive it soon, just need to wrap my head around on the Fast setup like your learning