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House of Dub 5GTX and Dieselgeek Sigma 5 short Shifter

Nyulak

Ready to race!
Location
SheffVill, OH
Running APR Stage 2 with downpipe I noticed some clutch slip last winter. A couple of weeks ago I noticed slip on the highway on a 5-4 downshift. Time for a new clutch, so I got the HoD 5GTX clutch kit and had them install it last Saturday. I also figured it would be an ideal time to have short shift kit installed, so I also had HoD install a Dieselgeek Sigma 5.

The install had a little snag when a leak at the rear seal was found, but with a new seal installed everything went together well. The install of the short shifter took some adjusting, but that was expected. what wasn't expected was how hard shifting became with the kit installed. Fortunately, this was fixed after I remembered to remove the clutch stop. The new clutch grabs lower than OEM, so it was necessary to get full clutch travel.

I have put 600 miles on the setup and am very pleased. Since the clutch grabs so well, the car is now more responsive. Turns out I had minor clutch slipping for some time and didn't realize it. The short shifter started out notchy and required extra effort, but it has become smoother over the past week with nice throws. I really like how these upgrades improve the car. I only wish I would have done it sooner.

Now I just need a bigger turbo to take advantage of the clutch.
 

MonkeyMD

Autocross Champion
Don't know how I missed this.

I know it's only a matter of time that this upGrade well be necessary. So good to know that's it's tolerable in everyday driving.

I would have forgotten about the clutch stop too. Kind of sucks that you can't keep it. It made a huge difference in my seating position and comfort level in shifting etc.
 

Nyulak

Ready to race!
Location
SheffVill, OH
Yeah, I think the worst bit is no clutch stop. I wish the pedals were better oriented in general, but the most comfortable position requires more effort to reach the clutch thanks to my short legs.
 

TSI1

New member
Location
TX
I have 2 questions.

No clutch stop, as in when you press the clutch pedal, it doesn't have a natural stopping position? Like it kind of slips in somewhere before you've engaged it all the way to the floor or something?
I might not be framing my question correctly, hopefully you can decipher.

I have less than 1k miles on my new 2017 1.8T 5speed. When I have it floored in 1st and go near the redline, shift into 2nd, I feel a moment of possible slippage then a sort of 'oomph' into a fully engaged 2nd.
Is that slippage?
 

MeltedSolid

Autocross Newbie
Location
San Francisco Bay Area
Car(s)
'15 Golf, e36 328i
A clutch stop is a piece you can buy that limits the travel of your clutch. Often if you push the clutch all the way to the ground, there will be a region that the clutch is completely disengaged for. A clutch stop will nearly eliminate that region so that the clutch begins engaging immediately after you begin releasing the clutch.

I believe what you're experiencing is a result of the bleeder delay valve. It is technically clutch slip, but only while the clutch does not have the full force of the pressure plate against it, so it is not something to worry about. The reason the OP was slipping is because of the massive amount of added power/torque from tuning his car. Not something you would ever experience stock.
 

Nyulak

Ready to race!
Location
SheffVill, OH
A clutch stop is a plastic plug that goes into the floorboard to prevent excessive clutch pedal movement. The stock clutch engaged high in its travel, so there was no need to push the pedal all the way to the floor.

Quickly making shifts will have some slip as the engine is turning at a different rate than the transmission, so the two will change speeds to match. The slippage that heralds a failing clutch happens when you are in a high gear and accelerating with the engine increasing speed, but the car not keeping pace. You will also notice more slipping when changing gears are low load and slow shifts.

A full-throttle shift without lifting the accelerator pedal during engagement, or not getting the revs correct with the accelerator, could put a large load on the clutch causing it to slip as you start engaging the clutch. This is likely exacerbated due to the clutch delay valve. The CDV is a restriction in the fluid path that slows the engagement of the clutch. This is expected behavior for a stock setup.
 

TSI1

New member
Location
TX
MeltedSolid, Nyulak,
Thank you both for the detailed and well written response.

I have been following the black forest industries project schwarz build, and have noticed some of their chatter in regard to the fact that our 5MT is not from the 2.5 from the MK6, as suspected, as well as some other information.

Drivetrain at large is something that I do not fully understand yet. However, I understand some basic principles yet am not fully aware of all of the other intricacies. It isn't easy to self-diagnose many of these issues without that working knowledge.

I sure am glad that forms like this are around!

Thanks again.
 

pwojdat

New member
I have 2 questions.

No clutch stop, as in when you press the clutch pedal, it doesn't have a natural stopping position? Like it kind of slips in somewhere before you've engaged it all the way to the floor or something?
I might not be framing my question correctly, hopefully you can decipher.

I have less than 1k miles on my new 2017 1.8T 5speed. When I have it floored in 1st and go near the redline, shift into 2nd, I feel a moment of possible slippage then a sort of 'oomph' into a fully engaged 2nd.
Is that slippage?
Hey, are you running stage 1 ECU or stock? I have 2016 golf and went APR stage 1 (91). Wondering how long before my clutch will start to slip if ever (my best hope).
 

TSI1

New member
Location
TX
pwojdat,

I am running everything stock. Unitronic and revo do not offer anything for the 2017 yet. I do not have APR in my city, so it is not an option for me, because if I need to go to the dealer in a hurry than I will not be able to flash it back to stock.

In regards to clutch slip, I'm honestly very unsure. I would however recommend looking into Project Schwarz from BFI, if you do some decent google searching, you will find that they are looking into doing some decent things with our transmission.

Best of luck!
 
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