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Old 05-06-2009, 06:13 AM   #1
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Quote:
Originally Posted by schoir
BTW, if you wanted to stick with your old style transmissions (which is not what I have chosen to do), I don't see why you wouldn't be able to swap in the new '03-'04 glass top and frame in place of your '99 top and frame and have it work the same way that the old top worked.
Could you elaborate on this? So why bother changing the transmission if it may work without changing anything?
Also, what sort of cost are you looking at in addition to the top, to retrofit the '03-'04 top to a pre'-00 the way you are going to do it?
Thanks!
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Last edited by rick3000; 05-06-2009 at 06:32 AM.
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Old 05-08-2009, 09:54 AM   #2
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Quote:
Originally Posted by rick3000
Could you elaborate on this? So why bother changing the transmission if it may work without changing anything?
Also, what sort of cost are you looking at in addition to the top, to retrofit the '03-'04 top to a pre'-00 the way you are going to do it?
Thanks!
Rick:

The "Version B" transmissions are MUCH more reliable than the earlier version. There is no "half-moon gear" in the newer style transmissions, so you never experience the V-Levers rotating the gear past the 50th tooth and then having the "hydraulic" pushrod snapping back. Sometimes over and over again. Sometimes ending up in a dead zone. The newer cable sheaths also are not prone to stretching as the old ones were, thereby more likely avoiding the "retraction" of the inner speedometer-type cable and the possible damage that can cause if you are not paying attention (including tweaking the clamshell).

Also, the timing system in the newer style transmissions is better designed to prevent the malfunction that occurs fairly frequently with respect to the "top open" idiot light not going off when the roof is completely closed or completely open. There is no "after-running" time built into the newer system.

You can get a used set of transmissions, with cables, and then buy a new style relay, along with sourcing an electrical connector to plug into the front side of the driver's side transmission. That whole set up should come in around $400 total.

If your old version set up is working perfectly, I don't see any immediate downside to just installing the '03-04 top and frame. If it doesn't work or if the old system fails after a while (could be years), you could then go ahead and do the rest of the conversion. It would also give you time to find a good deal on the newer parts.

Regards, Maurice.
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Old 05-10-2009, 07:39 AM   #3
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Quote:
Originally Posted by schoir
The "Version B" transmissions are MUCH more reliable than the earlier version. .
When did the Version B start?
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Old 05-14-2009, 08:16 AM   #4
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Originally Posted by clickman
When did the Version B start?

"Version B" transmissions were integrated into the assembly line sometime around May or June 1999, so that 2000 Boxsters and later years should all have them.

Regards, Maurice.
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Old 05-19-2009, 07:06 AM   #5
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I wonder if they changed the top on the 987 or if it's compatible with the 986.
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Old 05-19-2009, 08:18 AM   #6
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Originally Posted by blue2000s
I wonder if they changed the top on the 987 or if it's compatible with the 986.
A 987 top will DEFINITELY not fit a 986.

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