anyone interested in a hydraulic clutch conversion bracket

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anyone interested in a hydraulic clutch conversion bracket

Postby monzaaddict » Wed Dec 14, 2016 7:21 pm

The bracket will allow hydraulics to be adapted to a 71-75 clutch pedal assembly. I should have something in a month or so (maybe less). Grandam75 did this conversion which is shown is his project journal and for all intents I am just copying what he did. I have all the dimensions plotted on graph paper and have verified the angle using a mockup made of mdf.

I am going to need to design a clutch pedal stop also.
The clutch pedal starter interlock safety is going need to be bypassed.
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Last edited by monzaaddict on Sun Jan 15, 2017 1:50 am, edited 2 times in total.
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Re: anyone interested in a hydraulic clutch conversion brack

Postby mahoy78spyder » Fri Dec 16, 2016 3:54 pm

I've been seriously considering converting my car to a 4-spd and this looks interesting. Won't need it for some time but you have my attention. :th:
Ken Mahoy
'78 C06 Monza Spyder
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1978 Chevrolet Monza Spyder

Re: anyone interested in a hydraulic clutch conversion brack

Postby monzaaddict » Fri Dec 30, 2016 2:24 am

a simple bolt on clutch pedal stop can be fashioned using the following parts (threads 3/8" 16):

- an adjustable furniture leveling glide
http://www.ebay.com/itm/162344220950?_t ... EBIDX%3AIT

- a threaded rubber foot
http://www.ebay.com/itm/262262785446?_t ... EBIDX%3AIT

- a jam nut
https://www.lowes.com/pd/The-Hillman-Gr ... ts/3012489

- A coupling nut
http://www.homedepot.com/p/Everbilt-3-8 ... /204337391

- 4 screws

The following parts are also needed:

- 5/16" x 1" clevis pin (I am going to weld pin to pedal)
http://www.ebay.com/itm/172064093104?_t ... EBIDX%3AIT


-Russell 641001 Clutch Hose Fitting Clutch Fitting -4AN Male
http://www.ebay.com/itm/252313385182?_t ... EBIDX%3AIT

- clutch master for an ls1 98-02 camaro
http://www.ebay.com/itm/170918203204?_t ... EBIDX%3AIT

A lt1 camaro clutch master is the same except the internal stop allows for a longer stroke and it includes the reservoir. With the adjustable pedal stop adjusted properly the lt1 master could be used.

- Heim with 3/8" 24 female thread and 5/16 bore
http://www.ebay.com/itm/310407383483?_t ... EBIDX%3AIT

- 3/8" 24 jam nut
http://www.ebay.com/itm/271595071613?_t ... EBIDX%3AIT

- rigging stud (has to be cut down to work
https://www.westmarine.com/buy/hayn--re ... d--7414030

A simpler solution to modify the clutch pushrod might be to use this repair kit
http://www.ebay.com/itm/261851765088?_t ... EBIDX%3AIT

and this spacer
http://www.ebay.com/itm/370915026348?_t ... EBIDX%3AIT

The plate causes the brake pedal to sit lower. cutting the pushrod and adding a coupling nut and two jam nuts will allow the pushrod to be extended restoring the pedal height.
3/8" 24 x 1 3/4" coupling nut
http://www.ebay.com/itm/222387321725?_t ... EBIDX%3AIT

firewall flexible grommet 1300
https://www.google.com/search?q=kennard ... 8&oe=utf-8
https://www.mcmaster.com/#63595K36

After buying this grommet. I think the hole required is too big. use a 1.25 id grommet or a piece of foam pipe insulation wrapped around master and sandwiched between bracket and firewall.

I disassembled one of the masters and found the bore has a steel liner - I had assumed it was plastic. Also the pushrod used by AP/Lockheed/Tilton are basically the same. Therefore the stock rod can be replaced with a threaded 5/16 rod made by tilton. Three lengths are available.

https://www.summitracing.com/parts/til-75-030
https://www.summitracing.com/parts/til-75-031
https://www.summitracing.com/parts/til-74-400
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Last edited by monzaaddict on Sun Jun 11, 2017 12:47 pm, edited 10 times in total.
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Re: anyone interested in a hydraulic clutch conversion brack

Postby monzaaddict » Sat Jan 14, 2017 3:24 pm

I got the pedal stop worked out and will be working on the firewall bracket. No reason this won't work. Clutch master push rod stays straight throughout the full range of motion.
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Re: anyone interested in a hydraulic clutch conversion brack

Postby robson » Tue Aug 01, 2017 2:00 pm

Is there any hydraulic clutch conversion kit out there made for the Monza?
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Re: anyone interested in a hydraulic clutch conversion brack

Postby robson » Tue Aug 01, 2017 2:00 pm

Is there any hydraulic clutch conversion kit out there made for the Monza?
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