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1990 C4 Roll Bar Diameter

 
Old 11-29-2008, 01:08 PM
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rotorheadcase
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Question 1990 C4 Roll Bar Diameter

Hi all,

I'm looking to order a set of Powerflex bushes for my '90 C4.

Could someone please tell me the diameter for the standard front and rear roll bars.

I'm in the process of moving house so everything is in a state of chaos and I don't have time to trawl through the site to get the required info.

Anyone who has these on their C4 I would appreciate a little feedback as to whether it's a worthwhile upgrade.

Thanks in advance,

Neil
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Old 11-29-2008, 05:01 PM
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Jan-Terje
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Hey there, on the other side of the globe

The C4 has 18mm rear sway bar and i think it is 21mm up front.
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Old 11-30-2008, 08:31 AM
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Thanks Jan... much appreciated.

Neil
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Old 11-30-2008, 09:20 AM
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dfinnegan
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PET C4
front
20mm 89, 90-
22mm 91- (M030)
rear
18mm -90
20mm 91-
Rennlist Quotes:
What is the best way to start a suspension upgrade program?
If wanting improved handling, start with the
rear. Change the rear sway bar. On a Carrera 4 install a
larger diameter one. 21mm is best. These are found on
1990 model year only Carrera 2.
I always recommend with a strut brace to also
replace the rear sway bar with a more suitable unit.
On a C4 you remove the 18 mm and replace it with a 21 or
22 mm. With a C2 you remove the 21 or 22 mm and replace
it with a 18 or 19 mm. If you have a tip you leave the
sway bar installed because it is a 19 mm. Add a good set
of tyres and then see the difference.
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Old 11-30-2008, 09:21 AM
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Old 11-30-2008, 10:45 AM
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rotorheadcase
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Thanks for the link and the specs for the front roll bar.

Now I'm in a dilemma... do I order a 21 mm bush kit as well for the rear and hope to pick up a used 21mm roll bar!!

Thanks again,

Neil
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Old 11-30-2008, 10:55 AM
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dfinnegan
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The C2 guys need the bar you have and you need they bar they have. Sometimes a swap works. If you search you'll see posts asking for swaps. Might be worth a try.
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Old 11-30-2008, 01:20 PM
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Thanks mate... have posted in the FOR SALE thread...

Neil
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