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T56 conversion....hydraulic clutch question

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Old Feb 7, 2018 | 11:12 PM
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Originally Posted by AboveTheLogic
I think is an important point. Sliding the cylinder over slightly or tilting it a bit shouldn't give you any adverse effects. Once the system is bled, it's bled. I was pleasantly surprised at how effective it was to gravity bleed the system from dry. I'm not using a stock type slave cylinder so your results may vary.

This is one of those areas I didn't put a whole lot of thought into. I just mounted it up and got it working, have since driven a few thousand miles, including some autocross time without any leaks or clutch issues.

I've had more issues with using the wrong bellhousing bolts than anything else. Get the right bolts. I can dig up the part number if needed.

What's up with the bellhousing bolts? If I have to get new ones, fine, just curious why off-the-shelf 3/8 bolts didn't work
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Old Feb 8, 2018 | 01:09 AM
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Nice work! Looks like mine fit a lot easier than yours.

These are the bellhousing bolts I used. They were not snug enough in the threads to do the job. When tightening them down, I felt like I was going to strip out the threads. Several vibrated out.
https://www.summitracing.com/parts/sum-910206

I can't seem to find a record of the bolts I ended up with, they have traditional heads. Stay away from the summit 910206 12 point head bolts.
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Old Feb 8, 2018 | 10:07 AM
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Originally Posted by AboveTheLogic
Nice work! Looks like mine fit a lot easier than yours.

These are the bellhousing bolts I used. They were not snug enough in the threads to do the job. When tightening them down, I felt like I was going to strip out the threads. Several vibrated out.
https://www.summitracing.com/parts/sum-910206

I can't seem to find a record of the bolts I ended up with, they have traditional heads. Stay away from the summit 910206 12 point head bolts.
Thanks...I guess Zwede was right, no two of these cars are the same haha


Painted the booster and cylinder last night, need to locate some rubber sheet and make some gaskets to seal them against the firewall.....also picked up a Heim joint for the clutch rod yesterday, I have the rod sitting here on my desk so at some point I will cut threads on the end of it and fab an adapter to join the rod and Heim joint, should be able to post results by the end of the day
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Old Feb 8, 2018 | 10:32 AM
  #24  
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Fab an adapter?

If you're threading the end of the rod, you can either use a coupling and nuts to marry the rod to the heim joint, or get a heim joint with a female threaded end.

Coupling nut:
https://www.fastenal.com/products/details/0169134

Heim:
https://www.summitracing.com/parts/sum-msm5

Or just this:
https://www.summitracing.com/parts/qa1-cfr5
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Old Feb 8, 2018 | 11:23 AM
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Originally Posted by AboveTheLogic
Fab an adapter?

If you're threading the end of the rod, you can either use a coupling and nuts to marry the rod to the heim joint, or get a heim joint with a female threaded end.

Coupling nut:
https://www.fastenal.com/products/details/0169134

Heim:
https://www.summitracing.com/parts/sum-msm5

Or just this:
https://www.summitracing.com/parts/qa1-cfr5

The adapter is the connector...along with a jam nut on either end. The joint has 5/16-24 external threads on it, there are internal threads available but the rod is only .280 diameter, not enough for fine 5/16 threads......that would be too easy hahaha so I will turn the rod end down to .25 and use 1/4 threads and make the connector to match
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Old Feb 8, 2018 | 09:59 PM
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My rod was also about .280 and it threaded just fine:
Attachment 48354407

Attachment 48354408

Not super snug but its been holding up. I'll let you know if it falls apart.
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Old Feb 8, 2018 | 10:48 PM
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The rod will take a 5/16 die alright...maybe I've been in the machining business too long, but I would prefer full thread engagement
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Old Feb 8, 2018 | 10:55 PM
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Yeah I'm am IT guy, different mindset...
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Old Feb 8, 2018 | 10:58 PM
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Was able to get into a lathe today and machine the end of the clutch rod, also made a connector.....I have the clutch cylinder assembled and forgot to tak a pic of it before turning in for the evening, will do that tomorrow and hopefully have it installed
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Old Feb 8, 2018 | 11:03 PM
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Ok it only took a second to run out and snap a pic
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Old Feb 8, 2018 | 11:25 PM
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Nice
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Old Feb 8, 2018 | 11:32 PM
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Originally Posted by AboveTheLogic
Nice
Thanks, looks a lot like yours lol

I should have it installed tomorrow evening, then I can move on to the next job

I really should start a thread for the trans swap now that the clutch cylinder is about done
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Old Feb 9, 2018 | 10:29 AM
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Originally Posted by 682XLR8
Thanks, looks a lot like yours lol

I should have it installed tomorrow evening, then I can move on to the next job

I really should start a thread for the trans swap now that the clutch cylinder is about done
I recommend bench bleeding it from the slave end as much as possible. My new LT1-style Sachs slave cylinder took ALOT of bleeding.
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Old Feb 10, 2018 | 11:58 AM
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Originally Posted by Neil B
I recommend bench bleeding it from the slave end as much as possible. My new LT1-style Sachs slave cylinder took ALOT of bleeding.
Thanks for the tip, going to the Napa store today and see if they can hook me up with some adapter fittings for this set-up, and I'll give the bench bleeding a try
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