Some baic Mark knowledge questions.

LaserSVT

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Maybe I am not entering the right search criteria but I just get endless pages of stuff that does not answer these questions even though I know tey are on here somewhere.
Gve me a break,I just paid for a Gold Membership today so I should get some lee way. :lol:

Anywho,
1. Does the Spider Valve do anything other then make the venting louder and allow for less moisture?
2. Whats the issue with moisture? Is there something I need to do to maintain my air ride correctly?
3. What speed does it lower and how much do you have to slow down before it raises again?
4. Whats so special about the 98 trans again?

Thanks all! :wrench
 
98 Trans doesn't have the same failure issues as the others, since it was updated.
Car lowers at I believe 65mph once sustained for like a minute (highway cruising)
 
You guys are completly useless. :lol: Much <3

I know it lowers at highway speeds but what exactly and when does it go up?
I know the 98 is a better trans but why? Is it just the solinoid?
 
I know the 98 is a better trans but why? Is it just the solinoid?

No, there's a whole bunch of things, but one of the most significant changes is the mechanical diode one way clutch <----- Whatever the F that is. (probably some info on the transmission differences in the TCCOA tech section)
 
Oh yeah, what was the last month they made the Mark? Mine was made 5/98.
 
1. Does the Spider Valve do anything other then make the venting louder and allow for less moisture?

I've had the Sypder Valve and then the Spyder Valve Extreme. I believe he's designed a 3rd generation one now, so I can't speak of that.

The original spyder valve was basically a remote vent solenoid with a schraeder valve that enabled you to fill up the system with an air pump if the compressor died. One of the advantages of this system was that it vented the air and moisture before it reached the compressor.

The Extreme one has a couple extra features.
1- it has a pressure gauge.
2- the scrhaeder valve that enables you to refill the system can be mounted more conveniently.
3- it has moisture separators. So the Extreme can actually remove moisture from the system before it reaches the vent and compressor. This extends the life of everything.

2. Whats the issue with moisture? Is there something I need to do to maintain my air ride correctly?
Moisture destroys the compressor.
It increases pressure in the dryer.
And it can cause corrosion that will make your vent solenoid either freeze open or closed. Both are bad, but personally, it's worse when the vent gets permanently stuck open.


3. What speed does it lower and how much do you have to slow down before it raises again?
Isn't it 65? And it drops at 45?

4. Whats so special about the 98 trans again?
They upgraded a few parts, I remember that they improved the accumulator pistons, they changed the oil pan... The electronics are different....
Nothing radical.
 
The spider valve also vents faster, which is nice with a module VIII or Asham.

It's also nice to hear that louder vent so you know everytning's ok.
 
The stock mark 8 air ride compresses the air, pushes it thru the dryer and into the system.

When it vents, the process is reversed and the air goes backwards thru the dryer, blowing moisture into the compressor head where it corrodes the vent solenoid valve causing it to either stick open or closed thus disabling the system.

when you install any version of the spider valve, it eliminates the backwards flow of moisture thru the dryer and into the compressor.. instead of going back thru the compressor and dryer it's vented to outside, instead.

This is a good thing on two accounts.
No longer is the dryer being overwhelmed by the dual pass scenario...

moisture is removed from the system easier because it doesnt get pushed back thru

over time, the residual moisture in the system is all but completely eliminated, which goes along way in increasing the life of the compressor and the entire air ride system

Spider Valves are worth their weight in gold IMHO.

On my 95, my compressor died.
Tiffany took 3 dead compressors and built a single "frankencompressor" out of them.
I put a first generation spider valve on that compressor and it lasted for well over 200K miles...keeping in mind this was not a new, or a rebuilt compressor.
It was put together out of three dead ones.

the 98 trans..
much improved over the earlier years.
I could go on and on for paragraphs full of information that would mean little or nothing to most people
it'd be just "words, words, words"

in a nutshell.. it has a much improved one way clutch known as the "mechanical diode" that replaces the prone to fail one way clutch in the previous years.
The TCCOA trans article explains all of this in detail.


The Air suspension lowers at or about 60MPH, after 10 seconds AT or about 60 it'll lower the car to highway speeds.

At or about 40 miles per hour it'll raise itself back up.

hope this helps
 
The spider valve also vents faster, which is nice with a module VIII or Asham.

It's also nice to hear that louder vent so you know everytning's ok.

And with the Spyder Extreme, you have the plumbing to actually direct the location on the car where the air vents- for maximum effect or quiet.
 
In the stock setup, the drier passes compressed air back through it to reactivate the desiccant beads. Without doing that, the drier become saturated faster and have no way to dry itself out. This is the part about the Spyder that I don't understand, how does it regen the drier beads?

Like XLR said thou, the stock flow unfortuneatly passes air back through the drier>compressor which is the bad part. I think the drier is way to small, and the compressor is not built quite good enough for these conditions, hence the problems some people have...

Maybe if Lincoln had said to replace the drier every 2yrs or something, the compressors would last forever? With my VII I had, I took it out and dried it in the oven every fall so it wouldn't freeze in the winter. It leaked down overnight/hours and the compressor still worked good to the day I got rid of the car, leaky bags and all...
 

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