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Discussion Starter #1
Hey,
i'm considering to get LSD for my 2010 Boxster S with PDK.
haven't found any info on installation procedure. not even high level overview.


so what's involved in this?
does the gearbox need to be taken out?


from the following diagram (for MT service manual) and from K-Man article it looks promising like the swap can be done with the gearbox in place.





but PDK's side cover is much thicker - so i i don't know....

what oil needs to be refilled after the swap?
i mean - gear box oil? clutches oil? does the diff has it's own oiling?

any other tips will be welcomed! :thanks:
 

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Discussion Starter #2
no info?.....

is this swap even poosible? :crazy:
 

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Of course it is possible. Yes, the diff will have to be removed completely from the car. It must be drained, opened, and the ring gear coming out. Then you can change the core. Reassembly includes carefully setting the gear lash and is best performed by an experienced hand, it is not as simple as "nuts and bolts". This is one job best left to someone who lives in gears.
 

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Discussion Starter #4
i spent today about half an hour at local Porsche dealership with a mechanic and Porsche's work instructions on an computer (PPN).
very very little info there on the gearbox and the "final drive".

what we did see that even for driveshaft seal replacement they say gearbox needs to be removed.
so for the LSD i guess it's a must to remove the gearbox.

he reckons that oil should be replaced in the final drive compartment only.

engine cooling fluid should be drained and replaced (because of the PDK's heat exchanger).

all in all there are no instructions on disassembly and even to partnumbers for parts that needs to be replaced.

033032005.jpg

also no info on gap adjusting shims.

i guess i will have to wait for info from others on this project after somebody will do it.

the vendor unfortunately also can't provide any info :wall:
looks really weird to me selling 3,500$ product with zero support....
 

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Discussion Starter #5
as i meantioned earlier - i've seen this.

the main dillemas now are that it looks like gearbox removal is a must + where to get gap adjusting shims...
 

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Stock 987.2s have an open diff?!
Sort of. Stock 987.2S uses an elsd which modulates the brakes on the free-spinning wheel to approximate the actions of an LSD. Seems to work fairly well, but I've never compared it against a real LSD to see if there's a big difference in feel or speed. You can feel it engaging; it's a weird feeling.
 

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Discussion Starter #9
this intresting stuff.
does this eLSD comes stock on all 987.2s cars?
 

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The diff can be swapped in the car, just like the 987.1. Just no documents out there - pop out the stub axles (left side is very long, will only come out part way) and remove side cover. The diff will just slip out if all the under panels and braces are removed. There are no part #s available for the diff bearings, so they have to be pulled and re-installed. I had a shop do that part and swap the ring gear. With my Guard PDK LSD the dimensions were perfect, so no shim/backlash changes needed.

The fill hole for the gear section is on the right side rear of the trans.
 

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the vendor unfortunately also can't provide any info :wall:
looks really weird to me selling 3,500$ product with zero support....

I take exception to this last little bit here, as I spent quite a bit of time trying to give you as much information about the installation of this differential as is currently available. I am not precisely sure what more I should have done to help you along with this. You would not purchase a synchronizer and then expect the provider to give you a full step by step process for rebuilding your gearbox would you?

I take a great deal of pride in trying to give as many people as I can the best information available, and more then often I share helpful tips with no expectation of returns in any way. To say that I give zero support is not only not accurate, it is also a bit of a crappy thing to say.

I sent link after link after link with every scrap of information I could find for you, not to mention my own breakdown on the installation of this differential. Again I am not sure what more I should have done for you. I don't, unfortunately have the time to do a video on this installation, and I was very clear that you should find a transmission specialist to help with this installation, or talk to your dealership's service department.

Porsche unfortunately no longer puts service manuals on paper for everyone. I did try to see if this was available for you as well, which you also know. I would love to be of more help to you, but unfortunately in this case, there is just not much more I can offer. I do not think you statements here about zero support are accurate.

Erik Johnson
The Race Line
(970) 344-7761 phone
 

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Discussion Starter #13
Erik, i stand by what i say - the info provided by you in over 15 messages was very very minimal.
eventually after quite some wrestling at the keyboard i got info on oil and shims.
i don't understand why such basic info is not prepared and handed out with the product.

my dissatisfaction however is not really from you but by the manufacturer - absolute zero info comes from their side.

if we look at other products for other cars - 10-20 pages of installation instructions are not uncommon. even if we don't really need them...
here we get nada. except "experience mechanic will have no trouble to figure this out" or "do it according Porsche's manual".

i if had an access to a shop which has experience in this specific work on Porsche's - i wouldn't be asking those question...

and guess what - there is no Porsche's instruction for this. as i already have said - (luckily) i was able to spend some time a front of PPN together with a Porsche mechanic. for PDK nothing helpful is there.
quite honestly i would expect the vendor (either manufacturer or reseller) to do it for sake of their customers.
the fact they don't care to do it and tell the customer to go do it himself doesn't make sense and in my view it's equal zero support.

i would go even further and say that such vendor is not very confidence inspiring - if this is his attitude during the sale effort i can only imagine how he will treat problems if they arise.

this is truly sad and IMO is not appropriate for such a pricey product.

it's also a simple marketing thing - not every dealer will install aftermarket products. not everybody lives in US/UK/Germany and have plenty of shops experienced in Porsche modding.
so with no good instructions - the target market is decreased significantly...
 
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Discussion Starter #14
The diff can be swapped in the car, just like the 987.1. Just no documents out there - pop out the stub axles (left side is very long, will only come out part way) and remove side cover. The diff will just slip out if all the under panels and braces are removed. There are no part #s available for the diff bearings, so they have to be pulled and re-installed. I had a shop do that part and swap the ring gear. With my Guard PDK LSD the dimensions were perfect, so no shim/backlash changes needed.

The fill hole for the gear section is on the right side rear of the trans.
thanks a lot for this info.
this is what i've been looking for!

since we discovered that our cars already have this electronic simulation of the LSD - what are your impressions and experience from moving to a "real" LSD?
 

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thanks a lot for this info.
this is what i've been looking for!

since we discovered that our cars already have this electronic simulation of the LSD - what are your impressions and experience from moving to a "real" LSD?
ABD cuts power and drags brakes, all in detriment to exit speed. Lots of experience with it in a non lsd base cayman. It makes the car feel week on corner exits when loaded hard. Real diffs and the sport chrono psm calibarations work much better. It allows the power to be used with a useful degree of power oversteer. It will still interrupt if you go full drift style for several seconds.
 

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Discussion Starter #16
so times get improved? :drivingskid:

are you saying you keep PSM turned ON? even on auto-x?

when you say "Sport Chrono PSM calibarations" - do you mean stock one or you had to recalibrate something in the ECU? (or some other car's computer)

thanks again for your input!!!
 
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