Turbo gearbox onto a S2???
- Thread starter Big Dave
- Start date
TTM
Well-known member
Now that is a question I have been asking myself for quite long.
Just about everybody I have read from on the web reckons it will fit fine but the only bloke who has not is the mechanic who does the big ops on my car, and for having worked on these cars since they came out and having replaced countless 944 clutches he seems to know pretty much what he is talking about. I am very confused. [8|]
Just about everybody I have read from on the web reckons it will fit fine but the only bloke who has not is the mechanic who does the big ops on my car, and for having worked on these cars since they came out and having replaced countless 944 clutches he seems to know pretty much what he is talking about. I am very confused. [8|]
TTM
Well-known member
Interesting.
I bought a second hand S2 torque tube.
The S2 TT can be identified by a ~5 mm wide slit that goes half way through it covered by aluminium tape (supposedly to prevent external objects, damp, etc. getting in).
As explained by the former Porsche engineer who sold it to me, the slit was aimed to authorise torsional flexibility.
Besides was a NA torque tube, which showed no slit.
Early 951 torque tubes feature no slit either but a pair of anchors at the back, however my german speaking being not good enough I did not understand what these were aimed to (additionnal exhaust bracket(s), perhaps ?)
Late 951 torque tubes have no anchors and are identical to NA torque tubes in the sense that gearboxes are swappable between the NA and the 951. They share the same part number, anyway.
Anyway, he too reckoned that NA/951/S2 torque tubes and gearboxes were swappable [>:]
My mechanic said the S2 gearbox/TT has that different that screws alignment and/or alignment pins are specific to the S2, whereas they are identical between the NA and the turbo, hence the impossibility to fit an S2 gearbox to anything else than an S2 torque tube.
I seem to remember "Northernbloke" replaced the torque tube on his S2. Did the replacement unit feature the slit ?
I bought a second hand S2 torque tube.
The S2 TT can be identified by a ~5 mm wide slit that goes half way through it covered by aluminium tape (supposedly to prevent external objects, damp, etc. getting in).
As explained by the former Porsche engineer who sold it to me, the slit was aimed to authorise torsional flexibility.
Besides was a NA torque tube, which showed no slit.
Early 951 torque tubes feature no slit either but a pair of anchors at the back, however my german speaking being not good enough I did not understand what these were aimed to (additionnal exhaust bracket(s), perhaps ?)
Late 951 torque tubes have no anchors and are identical to NA torque tubes in the sense that gearboxes are swappable between the NA and the 951. They share the same part number, anyway.
Anyway, he too reckoned that NA/951/S2 torque tubes and gearboxes were swappable [>:]
My mechanic said the S2 gearbox/TT has that different that screws alignment and/or alignment pins are specific to the S2, whereas they are identical between the NA and the turbo, hence the impossibility to fit an S2 gearbox to anything else than an S2 torque tube.
I seem to remember "Northernbloke" replaced the torque tube on his S2. Did the replacement unit feature the slit ?
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