Hole in Trans! Are 5-spd and 6-spd cases the same? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

maytag · 08-03-2018, 08:36 PM

My track day today ended disastrously. See photos below. (Car is an '03 S)

I can only guess the clutch exploded on me? I was down shifting at turn 1 (UMC OUTER) and the pedal went straight to the floor.

So, obviously, 5-spd trans are cheaper and more plentiful. Do any of you know if the front case half will fit the 6-spd trans? If I can avoid buying a complete 6-spd trans, I'll be happy about it! Haha

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78F350 · 08-03-2018, 08:56 PM

They are not the same. Maybe the Audi/VW 6-speed cases from the same year range. Possibly even the front 1/2 of a Quattro.
https://s4wiki.com/wiki/01E_6-speed_manual_transmission

jsceash · 08-10-2018, 02:44 PM

Sorry removed I miss read you first post.

BYprodriver · 08-10-2018, 02:48 PM

You should call CA Motorsports, https://californiamotorsports.net/pages/contact-us.

They can probably tell you what happened & why. Get their Billet shift arrester it makes shifting much smoother & they can help with your next trans.

78F350 · 08-03-2018, 09:09 PM

I found pics to compare, I don't think the VW/Audi will work either.

maytag · 08-06-2018, 07:18 PM

Thanks again, to all of you who've responded here.
I'm eyeball-deep in projects right now, so I haven't done much.... BUT.... what I HAVE done isn't working for me.... Sunnuva.....

I got to the point where I was removing the bolts holding the halfshafts to the trans. There are 12 of them, and 10 went fine. the last two are kicking my A$$! they wouldn't budge, so I added some heat to the back flange. I cranked on 'em enough that the socket-cap stripped-out. So I welded an allen-socket to the first one..... the socket broke. So I bought another and welded it to the 2nd one.... the BOLT broke, 1" down from the cap. ::sigh::

SO: I'll cut the cap off the remaining one so I can finish getting the #$@! thing out.... and then ....

What do I risk having damaged adding that much heat to that axle-flange on the trans? Is it riding in a sealed-bearing? or does it have a rubber seal / wiper on it that I could've damaged? I tried to contain the heat, but ... sunnuva.....

SUNNUVA>.......

ok......
I'm calming-down now.

In the meantime, I'm sending back the Beluga exhaust to Beluga for warranty, because it's got something rattling inside the mufflers. They're not being super helpful at this point, in spite of them advertising their one-year warranty (I initially contacted them within 6 weeks of purchasing it).... but as long as they honor their warranty, I guess that'll be sufficient.

I'm making a list of parts I want to replace with new as I reassemble. It's growing. haha.

Thanks again, and in advance, for your help & support!

78F350 · 08-06-2018, 08:57 PM

I've used an angle grinder with a cut-off wheel.
Here's the flange. I'm not sure about the bearing, but it's a pretty big heat-sink.

itsnotanova · 08-07-2018, 05:00 AM

I highly recommend not going with a 5 speed as they don't last very well on a track car. I don't know of anyone that has downgraded to a 5 speed. Go with a 987 five speed if you do though

maytag · 08-07-2018, 05:30 AM

Quote:

Originally Posted by itsnotanova

I highly recommend not going with a 5 speed as they don't last very well on a track car. I don't know of anyone that has downgraded to a 5 speed. Go with a 987 five speed if you do though

No, I should have been more clear; I was thinking I could use the front case half, if they were the same, because the 5-spd trans is more plentiful and cheaper. But that's not an option.

I'll keep y'all posted.

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maytag · 08-08-2018, 11:44 AM

Quote:

Originally Posted by 78F350

Here's the flange. I'm not sure about the bearing, but it's a pretty big heat-sink.

Looks like the seal on those axles isn't too tough to replace.
All in all, I'm remaining positive here. I think I should be able to find someone to weld those holes up. I'll replace the axle seals, and should be okay.

I read someplace that a 987 clutch fits, and is more robust. But now i can't find that reference.... waddy'all know?
Those of y'all who track your cars: clutch preference?

What about a lightweight flywheel? Worth it?

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Sveach756 · 08-08-2018, 03:57 PM

Can you expand a little more on the rattling exhaust? I have the same on a new car I bought and it almost sounds like an AC compressor going bad rattle at times, is this your experience. Feel free to PM me to stay on topic.
Thanks
Shawn