1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

4 / 5 lug conversion questions

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Old 03-19-06, 08:26 PM
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Chad Carson

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4 / 5 lug conversion questions

Anyone done the S4 4 lug conversion to a GSL-SE and ran the larger 4 piston caliper like on the TII?
I have done some searching but only found 5 lug info.

I am think this route so I can keep the stock gsl-se lug pattern but be able to upgrade to the larger 4 piston calipers.
Old 03-19-06, 08:43 PM
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Rico the rotary freak

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Yes i did it, just re-drill the 5 lug front rotors to 4X114.3, and get the 2nd gen 4lug hubs. and you need longer wheel studs, ARP #100-7708 Late model GM 12mm X 1.50" from Summit Racing will work.
Attached Thumbnails 4 / 5 lug conversion questions-test-027.jpg   4 / 5 lug conversion questions-test-036.jpg  

Last edited by caciqueuno; 03-19-06 at 08:55 PM.
Old 03-19-06, 09:12 PM
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^^^ does work but I don't like redrilling things. If you want it done properly get some custom hubs and caliper brackets made for the front. Cost me about $AU300
Old 03-19-06, 09:20 PM
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Good 4 U
Old 03-19-06, 09:41 PM
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Chad Carson

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Originally Posted by caciqueuno
Yes i did it, just re-drill the 5 lug front rotors to 4X114.3, and get the 2nd gen 4lug hubs. and you need longer wheel studs, ARP #100-7708 Late model GM 12mm X 1.50" from Summit Racing will work.

Interesting...... so all you did was buy s5 cross drilled hubs and redrilled them to the se bolt pattern? What bearings are you useing and what spindle?
Old 03-19-06, 09:53 PM
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Rico the rotary freak

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Buy the Respeed 1978-1985 big brake kit and follow the instructions,very easy to do
www.mrcmfg.com/respeed/catalog/index.php

Last edited by caciqueuno; 03-19-06 at 09:58 PM.
Old 03-25-06, 12:05 AM
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has any one else done a 4 piston swap?

I dont care for the 5 lug swap,just the bigger rotors and 4 piston calipers.

Any pics?
Will the GSL SE brake master work?
How about the proportion valve?

What do they mean by bigger bearing front brakes,the GSL SE set up?
http://www.mrcmfg.com/respeed/catalo...dfe40d7f922414
Old 03-25-06, 01:36 AM
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https://www.rx7club.com/showthread.p...&highlight=lug

thanks Gonzz
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