droppointalpha
04-07-2012, 02:17 PM
To make a long story short, the rear end took a bad hit. Thankfully, I carry full coverage.
Pretty much, the entire rear axle was replaced. After, getting the car back from the shop, I carefully drive it round to ensure everything was good. Long story time... You probably ought to go grab a beer real quick.
Well, around 35 with just enough gas to barely accelerate, I get this feeling like the transmission is alternating between full lock up and not or between two gears (not sure I'm explaining it right). Acceleration still feels good and I know the feeling occasionally happened before the event. I read around and reread that the vehicle had some hunting around (reading lido's prefab tune page). But once the bug is there, worry is tough to ignore.
But now I'm thinking. The shop guy was surprised the marauder had unique rear diff compared to I don't know what. He was expecting it to be the rear from the interceptor. I told him I knew out had a unique final ratio in the 3 range but couldn't recall the number off the top of my head. Now, I'm perusing the internet to learn what I can about the rear diff and find the ratio wasn't unique except that it hasn't been seen in the platform before hand. First response on google is an OLD post on here. A guy needed to replace his but no one had the full assembly, if I read correctly.
That was 2009. Now I'm worrying. The CV LX Sport used a 3.27 and the CVPI used the same and offered the 3.55 in 2006; both could be fitted with a LSD; I identify these vehicles as I didn't notice a tremendous difference that should have come from a 2.72 or perhaps a 3.08 rear end. I have also read how to ID the diff externally by reading the tag 3 55 & 3 L 55 being the tags for an open and LSD respectively. But, my worry attacks upon the ship, ergo I cannot satisfy my fear nor curiosity. However, I can post here some questions and perhaps spark some interesting exchange of knowledge in the process.
1. Would a post 2006 CVPI 3.55 LSD even be able to fit/function with the ole MM? Number splines and such? I ask because the old thread was from 09 but the CVPI was never more than suggested as a source of parts. (link here http://www.mercurymarauder.net/forums/showthread.php?t=53347 )
2. Assuming the answer to the above is yes, would I be right in assuming an open diff is not going to harm the car, only reduce rear end performance? Was there a quality or performance difference between the MM and the CVPI/LX Sport diffs? (out side of whether it was open or limited slip)
3. Would a 3.27 gear do damage or cause problems? (other than an incorrect speedometer reading)
4. What was the stock MM's top speed if you removed the limit? Does the engine put out enough power to reach higher speeds if the 3.27 final gear was in place? If the 4.10 gives better grunt at the sacrifice of a higher engine rpm per given speed (an thus higher fuel consumption), would the 3.27 give a similar but opposite effect? (sorry, curiosity ruining wild now)
5. Has anyone ever done a 3.27 swap for higher top end speed (stand alone our in conjunction with other mods)?
6. (back to earth) Is it worth while to pay to change back to a 3.55 gear from 3.27 assuming the wrong one was in fact installed?
Finally, I ask some forbearance as I am typing this from the phone. It doth not like the search bar and thus I cannot use it to search the forum for additional answers.
Fond regards.
Pretty much, the entire rear axle was replaced. After, getting the car back from the shop, I carefully drive it round to ensure everything was good. Long story time... You probably ought to go grab a beer real quick.
Well, around 35 with just enough gas to barely accelerate, I get this feeling like the transmission is alternating between full lock up and not or between two gears (not sure I'm explaining it right). Acceleration still feels good and I know the feeling occasionally happened before the event. I read around and reread that the vehicle had some hunting around (reading lido's prefab tune page). But once the bug is there, worry is tough to ignore.
But now I'm thinking. The shop guy was surprised the marauder had unique rear diff compared to I don't know what. He was expecting it to be the rear from the interceptor. I told him I knew out had a unique final ratio in the 3 range but couldn't recall the number off the top of my head. Now, I'm perusing the internet to learn what I can about the rear diff and find the ratio wasn't unique except that it hasn't been seen in the platform before hand. First response on google is an OLD post on here. A guy needed to replace his but no one had the full assembly, if I read correctly.
That was 2009. Now I'm worrying. The CV LX Sport used a 3.27 and the CVPI used the same and offered the 3.55 in 2006; both could be fitted with a LSD; I identify these vehicles as I didn't notice a tremendous difference that should have come from a 2.72 or perhaps a 3.08 rear end. I have also read how to ID the diff externally by reading the tag 3 55 & 3 L 55 being the tags for an open and LSD respectively. But, my worry attacks upon the ship, ergo I cannot satisfy my fear nor curiosity. However, I can post here some questions and perhaps spark some interesting exchange of knowledge in the process.
1. Would a post 2006 CVPI 3.55 LSD even be able to fit/function with the ole MM? Number splines and such? I ask because the old thread was from 09 but the CVPI was never more than suggested as a source of parts. (link here http://www.mercurymarauder.net/forums/showthread.php?t=53347 )
2. Assuming the answer to the above is yes, would I be right in assuming an open diff is not going to harm the car, only reduce rear end performance? Was there a quality or performance difference between the MM and the CVPI/LX Sport diffs? (out side of whether it was open or limited slip)
3. Would a 3.27 gear do damage or cause problems? (other than an incorrect speedometer reading)
4. What was the stock MM's top speed if you removed the limit? Does the engine put out enough power to reach higher speeds if the 3.27 final gear was in place? If the 4.10 gives better grunt at the sacrifice of a higher engine rpm per given speed (an thus higher fuel consumption), would the 3.27 give a similar but opposite effect? (sorry, curiosity ruining wild now)
5. Has anyone ever done a 3.27 swap for higher top end speed (stand alone our in conjunction with other mods)?
6. (back to earth) Is it worth while to pay to change back to a 3.55 gear from 3.27 assuming the wrong one was in fact installed?
Finally, I ask some forbearance as I am typing this from the phone. It doth not like the search bar and thus I cannot use it to search the forum for additional answers.
Fond regards.