I have the larger line mod valve in my tranny and I have my chip setup to give me the shifts that I am looking for, but I have read that this can cause problems. I am wondering why this can cause problems and why The unit PSP sales is a better route to take. Can anyone explain this to me??


Thanks!!

 

Just have your chip re-burned to lower the line pressures a little. I have the Level 10 big valves and springs with no problems. Just let your tuner know all your mods. They should be able to adjust.

 

Silver-Bolt,

LOL..I think he was looking for a different reply to this He has a chip that is "perfected" by JDM to his CUSTOM shift preferences.

By the way...where did you read it causes problems? Many people have this done also....

 

No flame intended Spiro, but you really need to take that "chip" off your shoulder.... pun intended.......
I think he was just trying to ask what the differences are in shift kits. My line mod valve is perfect for me and I have had no problems. Jason

 

Jason,
Relax...its an inside Joke Bud!! You may need to take your own advice .

Rob is not asking about the differences between the two, but rather asking what people know about possible PROBLEM with ONLY using a Line-Mod Valve, rather than a complete V-Body from PSP or FACTORY_TECH.

I obviously dont know, thats why I asked where he read this.

 

...by the way Jason, if you need to talk to me, use this E-mail link EMPTYPOCKETRACN@aol.com.
You must realize something you NEW GUYS dont know. Many of us have a history together...so dont think that your catching me try to flame someone..OK.
Rob (collins8) has had his chip changed many times, and I have helped him more than I can remember with tech here and by E-mail.

So please...dont try to "patrol" me, because your still too new around here to know everyone, and everyone's relationship with one another.


IMO

Spiro-

 

Yep Spiro some of us are "OLD" timers...

 

Spiro,
You are exactly correct!
Here is the link that got me curious:
http://www.powersurgeperformance.net...pexd.asp?id=36

I am very happy with my setup now, but I want to make sure I am not hurting something because the tranny operation fundamentals are not up my alley. I am just looking for an honest answer.

Rob

 

Now I see what you mean. Hopefully FACTORY_TECH could chime in on this one.
Not sure about what causes transmission problems from not having the accumulator bore spring rates matched to the pressure increase. That is something many would be interested in to know as well, considering most have done just the Line-Mod valve alone.

Dont mind the NEWBIES...there still learning LOL

 

I'm sure Factory Tech will be more than happy to explain, and do a better job than I :-). I got that info from him, as a matter of fact, it was a post here on F-150. I'm sure a search would turn it up. I'm also sure he could just explain it agian here too.

 

I sure am learning more and more everytime I visit here.. I dont think I will ever get up to speed on the insider stuff. Thanks for the info Spiro. I didnt mean for it to sound like I was patrolling you.

 

Reading my MM and Fast Fords, It says that raising the line pressure gives you the firmer shifts by placing more pressure on the clutch packs, but it forces the pump to work harder which can lead to failure prematurely. They say it is better to upgrade the clutch packs to give you the firmer shifts and back off on the line pressure. There kit prices are not cheap. I have herd that Transtar sales the same parts at half the price but I guess you need to know what to order???

 

There were some things in the MMFF article that I don't agree with, but all in all I'm pretty much in agreement that using a chip to raise line pressure is a bad idea. As for the accumulator, when you raise the line pressure in the valve body, the spring calibrations in the accumulator circuits are no longer the correct ones, adding stiffer springs to offset the higher line pressure is in my opinion the correct way to do it. Just changing the line pressure modulator valve improves the shift, no argumant there, I just think that my way is better. For what it's worth, a few tuners and I think JDM disagree with me on that point, they say that the springs are redundant, or something to that effect, so it's kinda of a preference issue. In addition to adding the extra springs in th top of the accumulator bores, I also change the calibrations in the lower circuits (the 310 springs) and I use a different 321 valve because they were a problem on some of the first 01s I built, the new ones have a better surface and are much less likely to stick, which casues a pretty harsh "bang" shift on the 2-3 shift.

G

 

Thanks for the info!!!

Looking forward to rebuilding my tranny with your new parts i get from Sal at PSP!

Matt

 

Talk to Sal in person, we have a few "experiments" we're working on that should help a lot with "severe" applications that are'nt yet listed in his web site.

G