Manual Transmission T56 | T5 | MN12 | Clutches | Hydraulics | Shifters
View Poll Results: Should I do the drill mod?
Yes, do it
47
82.46%
No, keep it how it is
10
17.54%
Voters: 57. You may not vote on this poll

Cant decide drill mod or not?

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Old Apr 22, 2007 | 08:09 PM
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Default Cant decide drill mod or not?

I cant decide if I should do the drill mod or not. Has anyone had problems after they did the drill mod? Is there any reason I should'nt?
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Old Apr 22, 2007 | 08:11 PM
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Do it.
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Old Apr 22, 2007 | 08:15 PM
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Mainly I just want to hear if anyone thinks it can cause the slave to fail early or anything like that. The car shifts pretty decent how it is but if it helps and is pretty risk free as long as I get all the metal flakes out ill do it.
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Old Apr 22, 2007 | 08:19 PM
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dont want to sound like a newb but what's the drill mod?
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Old Apr 22, 2007 | 08:33 PM
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Originally Posted by mycamaroSS
dont want to sound like a newb but what's the drill mod?
Go to http://www.installuniversity.com/ins...sity/index.htm
Then install docs and its under transmission.
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Old Apr 22, 2007 | 08:33 PM
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the drill mod is used to remove the restriction in the hydraulic line coming from the master to slave cylinder in order to help with fast shifting.

i havent heard of anyone having problems after doing it
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Old Apr 22, 2007 | 08:40 PM
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what if one were to not do it. I rarely have trouble grinding gears. maybe because I shift too hard? maybe thats why I wore out my blocker rings quickly?
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Old Apr 22, 2007 | 08:46 PM
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Yeh I never shift too hard just fast but I try not to force anything. Which is why if I could get things a little smoother it could help for a little faster shifting. I am currently pretty happy with my shifter tho but not sayin it cant be better.
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Old Apr 22, 2007 | 11:43 PM
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There's absolutely no down side to the drill mod. Imagine an hourglass. You have the bottleneck in the middle that the sand must slowly channel through. With the restriction, there is this "bottleneck" that the fluid has to travel through so to speak. It keeps the fluid from traveling through the line as fast as it should to and from the master and slave, hindering clean, sure, disengagement, and engagement, of the clutch.
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Old Apr 22, 2007 | 11:45 PM
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Cool I figured it would be good to do when I was doing my headers and motor mounts.
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Old Apr 23, 2007 | 12:01 AM
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Absolutly do it. Coincidentally I just did the drill mod on my car today, and its 100% quicker shifting. I used to have slow 1-2 shifts, but now its great, and its a free mod, so why not?

The only way it could damage anything is if you dont flush the line well emough to get rid of the drill shavings. Be sure that you flush it well, because the little metal particles can hurt seals
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Old Apr 23, 2007 | 12:09 AM
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Originally Posted by LivingCanvas
Absolutly do it. Coincidentally I just did the drill mod on my car today, and its 100% quicker shifting. I used to have slow 1-2 shifts, but now its great, and its a free mod, so why not?

The only way it could damage anything is if you dont flush the line well emough to get rid of the drill shavings. Be sure that you flush it well, because the little metal particles can hurt seals
I know ill be freakin some is still in there even after I flush the **** out of it. I got a hand pump like bleeder that can be a vacuum/pressure bleeder and ill push a bunch of fluid through it like that after I blow some air through it.
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Old Apr 23, 2007 | 12:40 AM
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do the drill mod. When I did my hydraulics, I decided not to and wish that I had because every now and then I get the sponge pedal due to the restriction.
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Old Apr 23, 2007 | 05:21 PM
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sweet i might be doing this soon
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Old Apr 23, 2007 | 05:26 PM
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You guys that have done the mod what size bit did you go up to 1/8?
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Old Apr 23, 2007 | 11:30 PM
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1/8th is correct
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Old Apr 24, 2007 | 12:48 AM
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why wouldnt you do it?
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Old Apr 24, 2007 | 09:47 AM
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I replaced the slave when I did mine as well. If you're doing it by yourself, an easy way to flush the metal shavings is to snap the quick-disconnect into an old removed slave and pour fluid into the bleeder of the slave and tilt. The fluid will dribble out of the drilled side along with any shavings.
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Old Apr 24, 2007 | 07:48 PM
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To get the trash out of the line after you drill out the restriction, blow compressed air through it. That will do way more than letting fluid flow through it.
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Old Apr 24, 2007 | 07:53 PM
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Originally Posted by BriancWS6
To get the trash out of the line after you drill out the restriction, blow compressed air through it. That will do way more than letting fluid flow through it.
Cool I was going to do both.
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