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Old 01-13-2018, 04:50 AM   #1
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GBox 2nd gear detent install question

Good morning everyone,

Do I leave the transmission in neutral when installing the GBox second gear detent?

Couldn’t find the answer in an online search or in the install instructions, and transmissions are my weak link from a knowledge standpoint. Intuitively it seems correct to have the trans in neutral for the install.

Thanks in advance for answers and any additional install tips.
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Old 01-14-2018, 02:36 PM   #2
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Just received a response from GBox to my questions. I’ve decided to leave the gearbox in neutral for the install. They are a company of few words, but they did respond quickly on a Sunday. Here are my questions and Gbox’s responses:
———————————————-
Subject: Re: Install question - GBox 986 2nd gear detent install
Reply-To: ***************

the gear doesn't matter, or oil.
———————————————
On Sunday, January 14, 2018 6:01 AM, ************ wrote:

Hi GBox,

I’m ready to install my recently purchased GBox 2nd gear detent and I just need your confirmation that the transmission should be in neutral for the install. Also, should I lightly oil the detent surface prior to install or install it dry?

Thanks in advance for you replies.

Best Regards, Fred
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Old 01-14-2018, 02:57 PM   #3
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What is a Gbox?
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Old 01-14-2018, 03:24 PM   #4
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Quote:
Originally Posted by Ciao View Post
What is a Gbox?
Gbox is a company that specializes in Porsche gearboxes (among other things). They make a modified 2nd gear detent for the 986 6spd that is proported to limit 2nd gear popouts if the transmission is in good condition at install. Google ‘GBox 986 detent’ and you will find them on the web. There is also a forum member (Erik) who produces a modified detent.

I don’t have a 2nd gear popout problem, but I’m installing the detent as PM while I have the car on the Quickjack for brakes, AOS and Pedro’s technoBrace.
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Last edited by Oldcarguy; 01-14-2018 at 03:26 PM.
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Old 01-14-2018, 04:22 PM   #5
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Interesting!

Cheers, Oldcarguy!

I'll research it
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Old 01-14-2018, 09:02 PM   #6
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Originally Posted by Oldcarguy View Post
Just received a response from GBox to my questions.
I give them huge props for responding on a Sunday! At least they told you enough so you can get on with the work.
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Old 01-14-2018, 09:21 PM   #7
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That thing has to be absolutely perfect to line up. Overall, the job is reletively easy, unless you need to pull it back out and twist it. It goes in farther than you think as well.
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Old 01-25-2018, 07:47 AM   #8
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GBox 2nd gear detent installed yesterday. Took less than an hour. Tools used were 8 inch 3/8” swivel head ratchet, 3/8” 15 inch breaker bar, 8mm allen head male socket, 13mm box head wrench, and 7mm flat end (not ball head) allen wrench.

- Use of the 7mm allen wrench as the extract tool was brilliant as suggested in the post below. I did not have clearance to use either of my flex head magnets and they would not have worked as well anyway (if at all).

2nd Gear Detent Replacement,

- I did the install with the transmission in 1st gear to move the counterweight out of the way. The little L shaped heat shield cover was MIA on my car. Will add to my Sunset parts list for order.

- I think the Borla exhaust gave me the room to use the 15” breaker bar. The 8mm plug came lose with no problems.

- I lightly oiled the new detent with Mobil 1 0w-40. Even though I was very careful to align the detent, I did have to rotate it slightly to seat it correctly. I heard and felt it when it “dropped” into place

Haven’t had a chance to drive it due to weather, but it static shifts ok into all gears and reverse. Here’re a few pics:












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Old 07-11-2018, 06:51 PM   #9
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so.... "2nd gear popout".... would that describe what appears to an onlooker as a missed shift to 2nd-gear? In other words: it sure FEELS like it's engaged, and then it's not..... sunnuva..... (grrrr)

it's not like it engages, and I'm accelerating when it pops-out.... it just "clicks in", but doesn't engage..... making my wife snicker at me 'cuz it seems I can't find 2nd gear half the time now....

sunnuva.....
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Old 07-11-2018, 10:29 PM   #10
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Originally Posted by maytag View Post
so.... "2nd gear popout".... would that describe what appears to an onlooker as a missed shift to 2nd-gear? In other words: it sure FEELS like it's engaged, and then it's not..... sunnuva..... (grrrr)

it's not like it engages, and I'm accelerating when it pops-out.... it just "clicks in", but doesn't engage..... making my wife snicker at me 'cuz it seems I can't find 2nd gear half the time now....

sunnuva.....
Yep. Particularly before the car is fully warmed up.
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Old 07-12-2018, 04:16 AM   #11
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Quote:
Originally Posted by maytag View Post
so.... "2nd gear popout".... would that describe what appears to an onlooker as a missed shift to 2nd-gear? In other words: it sure FEELS like it's engaged, and then it's not..... sunnuva..... (grrrr)

it's not like it engages, and I'm accelerating when it pops-out.... it just "clicks in", but doesn't engage..... making my wife snicker at me 'cuz it seems I can't find 2nd gear half the time now....

sunnuva.....
For me it was not like a missed shift or reluctance of the gearbox to shift into second. In the case I experienced when checking out Boxsters for purchase, I had shifted into second, it engaged no problem and I was lightly accelerating in second and the transmission popped into neutral. For the rest of the test drive I made sure to keep pressure on the lever while I was in second gear. Through the shifter it did feel like second gear had an initial position that “tricked” you into believing second was firmly engaged when in fact it wasn’t. I passed on that car. For the 986 I did purchase, I installed the detent as PM.
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Last edited by Oldcarguy; 07-12-2018 at 04:19 AM.
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Old 07-13-2018, 12:35 PM   #12
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Quote:
Originally Posted by Oldcarguy View Post
For me it was not like a missed shift or reluctance of the gearbox to shift into second. In the case I experienced when checking out Boxsters for purchase, I had shifted into second, it engaged no problem and I was lightly accelerating in second and the transmission popped into neutral. For the rest of the test drive I made sure to keep pressure on the lever while I was in second gear. Through the shifter it did feel like second gear had an initial position that “tricked” you into believing second was firmly engaged when in fact it wasn’t. I passed on that car. For the 986 I did purchase, I installed the detent as PM.
CMS shift arrester will improve shifting further into all gears!


https://californiamotorsports.net/collections/porsche-986-boxster-5-speed-transmission-parts/products/cms-996-shift-arrester
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