Who makes the front LSD for the '05?

jaylw314 · 09-04-2005, 06:52 PM

I looked over info on the front LSD, and noticed that it went from the SureTrac in '04 (made by FHI), to a new helical LSD in the '05.

Now, aside from having my brain turned to mush trying to understand how a helical diff works, I'm curious as to who makes it. When I did a search, the only two companies that appear to make a helical diff are Torsen and Quaife. Did FHI build a new helical diff from the ground up, or did that contract it from one of those companies. Anyone know?

**wdb** · 09-04-2005, 08:21 PM

I don't know for certain but FHI makes the center and rear differentials so I assume they know how to cut a helical gear. My money is on them making their own diff.

RBMike · 09-06-2005, 09:21 AM

It's probably not a torsen. Torsen is a whole different kind of diff.

09-04-2005, 06:52 PM	#1
jaylw314 Junior STI Driver Posts: 144 IWSTI Addict since: Aug 2004 Trader Rating: (0)	Who makes the front LSD for the '05? I looked over info on the front LSD, and noticed that it went from the SureTrac in '04 (made by FHI), to a new helical LSD in the '05. Now, aside from having my brain turned to mush trying to understand how a helical diff works, I'm curious as to who makes it. When I did a search, the only two companies that appear to make a helical diff are Torsen and Quaife. Did FHI build a new helical diff from the ground up, or did that contract it from one of those companies. Anyone know? This ad is not endorsed by this member. Please register or login to hide this ad.

09-06-2005, 09:21 AM	#3
RBMike The Next Petter Solberg Posts: 931 IWSTI Addict since: Oct 2004 Trader Rating: (0)	It's probably not a torsen. Torsen is a whole different kind of diff. This ad is not endorsed by this member. Please register or login to hide this ad.

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09-04-2005, 08:21 PM	#2
wdb dances with roads Car: 2005 CGM STi Posts: 5,125 IWSTI Addict since: Apr 2005 Trader Rating: (8)	I don't know for certain but FHI makes the center and rear differentials so I assume they know how to cut a helical gear. My money is on them making their own diff.