Merc Blue Top Trans Mod: Not for 2004 ZF
#1
Merc Blue Top Trans Mod: Not for 2004 ZF
So there I was reading through the twin screw supercharger upgrade thread and I saw the comments on the Blue Top solenoid mod and decided I wanted to do it. Got the solenoids and lined up the shop but I was a little concerned that I couldn’t find anyone who had done this on a 2004 or newer XKR. I now know the reason. The newer car has 6 very different solenoids and I’m now $850 smarter. However there was an upside, I’d had the trans oil changed early to get rid of the trans growl (not a good thing) and it didn’t take. So I had them swap out the oil used by the dealership for:
Pentosin ATF 1 TE ML 11B
No growl that I can see. So that was likely worth the effort (at least that is what I’m telling my wife when she gives me the “you’re and idiot” glare.
The dealership owes me pictures will post when I get them.
Pentosin ATF 1 TE ML 11B
No growl that I can see. So that was likely worth the effort (at least that is what I’m telling my wife when she gives me the “you’re and idiot” glare.
The dealership owes me pictures will post when I get them.
Last edited by plums; 12-08-2012 at 06:05 PM.
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Such as an 02? A little bit of searching reveals the new solenoids are supposed to firm up shifts, has anyone here done it? Is it too aggressive or still comfortable for daily driving? Any downsides?
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The title of this thread has been changed to reflect that the blue tops are only for the Merc W5A580.
Last edited by plums; 12-08-2012 at 06:06 PM.
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Mark
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My XJR has blue tops. They were changed when transmission and torque converter were strengthened and modified. Test drives were quite awful experiences because of VERY HARSH downshifts 3-2, 2-1. After adapation reset and 1K miles it's ok, not so comfort as before the blue tops - but shifts could not be firmer.....like real race car when you use S mode. It's possible if you just change the blue tops, no other mods, you feel good.
Last edited by XJR-99; 12-09-2012 at 04:42 AM.
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pomosv (12-09-2012)
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#8
I wish this upgrade would work with my 6 speed. Oh well.
#9
Let me check
One of the guys out here is modifying his XJR and helping me with mine, if he doesn't want them they are yours. Give me a few days to check.
#10
labor
That was the labor + oil charge to pull apart the transmission and discover they won't work. That is on top of the cost of the two solenoids. So just two, and found a home for them. (Jeff wants them for his XJR)
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Blue tops installed short video
They shift the transmission almost instantly at lower speeds. I only have about 100 miles into driving after the install. Under throttle, they are great. The shifting should ease a little at the lower speeds after more driving. I like them, but I am used to doing weird things to my vehicles to make them perform better.
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