2006 - MPT to VTD conversion!

114024 Views 238 Replies 50 Participants Last post by nutville, 2 mo ago

a6n6d6y

Discussion Starter · Jul 19, 2008 (Edited)

7

this mod is intended for US vehicles without VDC as all others (AFAIK) allready have this type of differential

edit: looks like 2007+ XTs have this as an option as per http://www.subaruforester.org/vbulletin/f63/usdm-forester-specs-options-prices-all-years-34187/#post435339

this mod will do little for your vehicle unless your making A LOT of power

as you can see the diagram has the first half of the part numbers (for the most part)..I have a wad of papers that finished them by Year Motor etc

Edit by admin: parts list and diagram attached and downloadable below.

if you copy and paste the part numbers into one of the OEM parts sites you can get a total cost..(note the quantities on some of them)...and they will put them in a box and ship them to you..then you (or your favorite transmission shop :icon_wink

must assemble and install, however, this project will require the use of a shop press and some specialty tools (or their home made equivalent :icon_idea: )

This article explains this diff well: see downloadable 4eat.pdf attachment below

once this is assembeled installing it to the transmission is fairly straight forward...if you have never opened an automatic transmission this may not be a job for you :evilatyou:

here they are side by side left MPT right VTD

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41 - 60 of 239 Posts

a6n6d6y

Discussion Starter · #41 · Aug 10, 2008

Roo said:
What I AM seeing is an opportunity to take all the part numbers, put together a wholesale package price for interested parties, and fill the needs. I'll be all over it Monday morning after I get finished with my Monday morning chore list and a few other things at work.

By Monday evening, I'll have a package price worked out and then it'll simply be shipping quotes to interested parties.

are you going to be including the knowledge of how to disassemble and reassemble an automatic transmission in that offer :mob:

I would do it for locals ...but I'm not a vendor here....just sharing what I have figured out.............

Roo

· #42 · Aug 10, 2008

Dear Mr. a6n6d6y,

You sir have a Private Message.

:shake:

goshring

· #43 · Aug 10, 2008

WOW. That is awesome! Very cool mod.

2StepsAhead

· #44 · Aug 11, 2008

Any update on the parts list package? I might be going under the knife, want to get a rough estimate what this would cost so I can see if I have the funds for everything.

Andy_PHA

· #45 · Aug 12, 2008

so to touch on one of my earlier questions... are these parts the same as what is in a WRX 4EAT, or are these parts that are for newer/other market foresters? I don't know that it matters, but I was just wondering.

a6n6d6y

Discussion Starter · #46 · Aug 12, 2008

Andy_PHA said:
so to touch on one of my earlier questions... are these parts the same as what is in a WRX 4EAT, or are these parts that are for newer/other market foresters? I don't know that it matters, but I was just wondering.

if you want to know you can go to a dealer and get the part numbers for the WRX and compare...that is how I put this one together only I looked up the parts for a FXT w/VDC

Andy_PHA

· #47 · Aug 12, 2008

cool that answers my question for the most part. I was just wondering if there was a difference between the two. Mostly I just wanted to know if these were parts for the Forester specifically.

a6n6d6y

Discussion Starter · #48 · Aug 12, 2008 (Edited)

2StepsAhead said:
Any update on the parts list package? I might be going under the knife, want to get a rough estimate what this would cost so I can see if I have the funds for everything.

I've edited the first post to help with this http://www.subaruforester.org/vbulletin/f89/mpt-vtd-conversion-37441/#post429050

also I don't want to assume the liability of doing the assembly work and shipping ready to install ( nor do I have vendor status to make this feasible )

g00fy

· #49 · Aug 12, 2008

I'm sorry but i'm still a little confused here... Does this job require the center diff out of a 4EAT wrx? Or does it require the center diff out of a 5spd FXT? Or am i totally wrong here?

guroove

· #50 · Aug 12, 2008

g00fy said:
I'm sorry but i'm still a little confused here... Does this job require the center diff out of a 4EAT wrx? Or does it require the center diff out of a 5spd FXT? Or am i totally wrong here?

The vtd center diff is in the 2007 or 2008 Forester Sports models, and the WRX limited with automatic transmission.
2007 Subaru Forester Sports - Top Speed

g00fy

· #51 · Aug 12, 2008

guroove said:
The vtd center diff is in the 2007 or 2008 Forester Sports models, and the WRX limited with automatic transmission.
2007 Subaru Forester Sports - Top Speed

Ah, got it now, thanks man!

a6n6d6y

Discussion Starter · #52 · Aug 12, 2008 (Edited)

Andy_PHA said:
so to touch on one of my earlier questions... are these parts the same as what is in a WRX 4EAT, or are these parts that are for newer/other market foresters? I don't know that it matters, but I was just wondering.

a6n6d6y said:
if you want to know you can go to a dealer and get the part numbers for the WRX and compare...that is how I put this one together only...
I looked up the parts for a FXT w/VDC

g00fy said:
I'm sorry but i'm still a little confused here... Does this job require the center diff out of a 4EAT wrx? Or does it require the center diff out of a 5spd FXT? Or am i totally wrong here?

are you trying to source the parts used ?

maybe I would make sure before purchasing those...however, I mated the VTD to a 2002 legacy transmission before I installed so there is a good probability that the WRX 4EAT would be compatible

NO

pleiad7

· #53 · Aug 12, 2008

a6n6d6y,

how long did the whole swap (removal, disassembly, re-assembly, installation) take you? I just got back from talking with the guys at my preferred shop (LIC Motorsports); they said they can do the work for me, but weren't sure how many hours to quote for the whole job. Also, what exactly is the shop press needed for? They have a machine shop on hand, but again, need specifics to obtain a quote.

TIA

a6n6d6y

Discussion Starter · #54 · Aug 12, 2008 (Edited)

pleiad7 said:
a6n6d6y,

how long did the whole swap (removal, disassembly, re-assembly, installation) take you? I just got back from talking with the guys at my preferred shop (LIC Motorsports); they said they can do the work for me, but weren't sure how many hours to quote for the whole job. Also, what exactly is the shop press needed for? They have a machine shop on hand, but again, need specifics to obtain a quote.

TIA

too long, and frankly I don't know, I was in the garage for a few hours a day for a week, but I was meticulous as I had never done it before...however once the diff is assembled it should be less than 2 hours under the car for installation..probley closer to one hour if they have experience with the subys

the dealer shop manual should be of some help R&R of the "extension case" should give a good idea

the press is needed for bearing installation plus a specialty tool to compress the return spring on the clutch piston

here's the tool I made, it was a side diff retainer(where the front drive axle goes into the transmission)

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Tuned200

· #55 · Oct 27, 2008

OK, so I have a VDC tranny, is a Valve body upgrade required or will the resistor mod work fine for the power I make.

And dang nice job on the write up.

a6n6d6y

Discussion Starter · #56 · Oct 27, 2008

the resister is all they do to the 'direct control' VBs...my transmission seems to do fine with it

g00fy

· #57 · Nov 1, 2008

will the VTD out of a LGT 5eat work also?

a6n6d6y

Discussion Starter · #58 · Nov 1, 2008 (Edited)

g00fy said:
will the VTD out of a LGT 5eat work also?

I just looked in the service manual, the transfer section looks very different on the 5eat

a6n6d6y

Discussion Starter · #59 · Nov 2, 2008

I updated the first post with VTDcost.txt from SubaruPartsDirect.com

a6n6d6y

Discussion Starter · #60 · Dec 12, 2008

a problem....finally

Well winter weather made taking the FWD fuse out a plus (the front tires were spinning in the rain)

but when I get on it in first gear it triggers the flashing AWD light....the "it thinks the tires are of different sizes" thing...

a new TCU out of a VDC vehicle is ~$500 and I don't KNOW that it would work, I think the wire to that light is going to get cut

but beside the flashing light it works great...4 wheel drifting in the rain :woohoo:

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