My 1987 Two Door Crown Victoria AKA THE BROWN BLOB

[87gtVIC]

What exactly are you referring to?

Maybe my install thread clears things up for you: http://www.grandmarq.net/vb/showthre...l=1#post706832

[87gtVIC]

Remember this post....with video where I comment on rev limiter or valve float being the odd noise I am hearing.....

http://www.grandmarq.net/vb/showthread.php?26257-My-1987-Two-Door-Crown-Victoria-AKA-THE-BROWN-BLOB&p=780320&viewfull=1#post780320

Turns out its just the exhaust note bouncing off of cars as I am flying past them. Put headphones on the other day and figured that one out. Means I can continue to push her.

[sly]

[gadget73]

If you hit valve float or a rev limiter, you'd know it. The factory rev limiter is something over 6000 rpm. Valve float may occur anywhere depending on the springs, but you'll feel the car running suddenly very horrible if it happens. It actually feels a fair bit like a rev limiter but its like you hit a "wall" at a certain RPM and it won't spin beyond that point. Usually goes along with a bunch of hitching and bucking, and sometimes it goes with smashed valves and wrecked valvetrain parts.

[Tiggie]

Makes sense now that you say that and I rewatch the video. Just look out for the man on your big speed excursions.

I was under the impression that eec iv didn't have a rev limiter. So they do have one?

[gadget73]

Theres one, but its fairly high rpm. Not sure if its actually a rev limiter or a limit of the hardware where it just simply can't fire the injectors any faster. Either way its somewhere north of 6000 rpm, which most of us are never going to hit anyway.

[mitymerc]

What exactly are you referring to?

Maybe my install thread clears things up for you: http://www.grandmarq.net/vb/showthre...l=1#post706832

Did you use the V6 TFI or your existing one. Wondering if they work on either engine. Did a quick pn search on my phone last time I went to the JY and they did not look compatible.

[mitymerc]

Theres one, but its fairly high rpm. Not sure if its actually a rev limiter or a limit of the hardware where it just simply can't fire the injectors any faster. Either way its somewhere north of 6000 rpm, which most of us are never going to hit anyway.

The Mustang MT ECM has a limiter @ 6250 RPM. There has been some discussion that the AT version was not limited, I can't verify that. I can say that the MT definitely has one. I experimented with using it as a 2 step back when 2 steps were not allowed in the classes I raced in. It sort of worked but was inconsistent as the R's would hit the limiter & the ECM would pull back on the fuel (scary strategy when @ full throttle) and bounce way down so you never knew how many R's it would be turning when the tree came down.

[87gtVIC]

I used existing TFI.

Never even considered to use a different one. If it aint broke, dont fix it.

Did you use the V6 TFI or your existing one. Wondering if they work on either engine. Did a quick pn search on my phone last time I went to the JY and they did not look compatible.

[gadget73]

As far as I know, the TFI doesn't really care how many cylinders are involved. There is that black module which is for a different spark control system but the grey ones all function the same. The ones intended for remote mounting have more pins on the plug since they have to get the connections from the pickup into the module as well. The dizzy-mount ones have the pins sticking straight up from the module into the PIP. Other than the connector arrangement, they work the same.

[mitymerc]

That was my speculation, so for a back up unit to chuck in the car I can grab whatever is handy (provided the pins are correct) as a backup.

[VicCrownVic]

I belive the bit about number of cylinders not being a concern (too lazy to look it up on a Saturday morning).
Also the black units are supposed to be computer controlled or something along those lines. Oddly, while I was looking for a remote mount TFI at the JY, it was hit or miss if an F150 had a black or a gray module. This was looking at the same model year trucks so I have no idea what that was all about. I don't think that many people would install the wrong replacement (they were all Motocraft and looked original to the trucks) but this is Detroit so I geuss...

As for the connector, it is actually the same for both dizzy and remote mounted modules. The remote module pulls its PIP "info" from three of the existing pins. Even on the dizzy mounted units those three pins for the PIP "info" are tied into the same three pins on the main module plug. The dizzy would still need to be changed to a remote mount unit and custom wireing but I wonder if a dizzy mounted TFI module could be used remotely with a remote mount dizzy? I wouldn't recommend it since you would then have three exposed pins on that module (even if you cut them off) unless you insulate them. If you're going to add extra cost of a remote mount dizzy there's no sense in testing this theory. The TFI is not that expensive compared to the dizzy (at least at my local JYs).

Check the post below for some more info on this topic:
http://www.grandmarq.net/vb/showthre...tor-Conversion
IIRC the links in the first post cover a bit of what I'm talking about.

Edit: Sorry for the thread jack. The Brown Blob is looking great as always.

[gadget73]

Something about computer controlled dwell vs computer controlled advance. I forget, I read it once but all I know is they aren't the same and don't sub for one another.


Got woke up by barking dogs and a phone call from work at almost exactly the same time. At least I could walk him through the problem and didn't have to go in.

[86VickyLX]

The rev limiter stock is 6250. Auto and manual. According to the programming through binary editor.

[Bobcat]

The rev limiter stock is 6250. Auto and manual. According to the programming through binary editor.

6200? How kiddish. Should be 7200.



David, you need more Ford emblems.