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My new '90 Carrera 4

 
Old 03-14-2010, 07:47 PM
  #16  
Computamedic
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Originally Posted by birdseye View Post
They are 47mm rear/52 front offset. 10j x 18 and 8j x 18 - anybody know what the j means?
The "J" indicates the wheel rim profile. There's a lot more information here on the variety of rim profiles which are used. The "J" profile is, by far, the most common - in road wheels at least.

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Old 03-15-2010, 03:30 PM
  #17  
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I've been looking for months for a black or white 964. Did you find that one on pistonheads by any chance?
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Old 03-15-2010, 05:38 PM
  #18  
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Yes it was on Pistonheads, wasn't far from home. Hope you find what you're looking for!
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Old 04-16-2010, 06:29 PM
  #19  
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booked it in to JZ Machtech today for KW V3 fitting, told them I want it as low as they are prepared to go which they said would probably be a little lower then RS. Picked up refurbished wheels in anticipation. will post pics when it's done.
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Old 04-18-2010, 04:31 PM
  #20  
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I love Turbo seats!
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Old 04-18-2010, 05:03 PM
  #21  
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Originally Posted by birdseye View Post
Yes it was on Pistonheads, wasn't far from home. Hope you find what you're looking for!
Where in Herts are you? I'm in N London, and do most of my driving in Herts. Also work in Luton. I'll keep an eye out for you.
Don't get hung up on making the car too low, as it's not always beneficial to the ride or handling. As Dave says, H&R greens can and do overwhelm the standard shocks (they did mine). Don't forget, it's not an RS, so making it just below RS height (even with KW's) may not be a good thing. The RS is different in many others ways. I'd also bear in mind what Dave says about the C4.
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Old 04-18-2010, 05:04 PM
  #22  
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Originally Posted by wit007 View Post
I love Turbo seats!
They're actually the sports seats which were an option on all models.
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Old 04-18-2010, 06:09 PM
  #23  
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Thanks for the comments; mr pg, i live in ware. There are some really good roads out from here.

I know going too low is not really the right thing to do, but like some others on here I am from a VW background and it makes it really hard to resist going as low as possible. 964's just look so good low!
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Old 04-19-2010, 05:30 AM
  #24  
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Originally Posted by mr pg View Post
They're actually the sports seats which were an option on all models.
Yes, but they are known as Turbo seats. I'm jealous because I've got normal seats (comfort) ;(
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Old 04-19-2010, 05:43 AM
  #25  
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Originally Posted by wit007 View Post
Yes, but they are known as Turbo seats. I'm jealous because I've got normal seats (comfort) ;(
What you choose to call them is entirely up to you, but the "Sports Seats" option was a ú308 selectable option in the UK (at least) and, were even a NCO choice on the Turbo. There were other seat choices such as lumbar adjustment which wasn't available with the Sports Seats and, hence, available on the Turbo as well if the Sports Seats option wasn't taken.

I, too, have the Comfort Seats and would have preferred the Sports Seats, but, hey ho, we make do!!!

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Old 04-20-2010, 03:57 AM
  #26  
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Very nice car that is a very fun Porsche to drive around in. Vernon.
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Old 04-20-2010, 04:33 PM
  #27  
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Hi dave

Just been reading your advice with regards to lowering a C4.
I have only currently done the front but will be doing the rear asap.
I have only used springs.
Would you say it looks too low for a C4? or do I need to measure?
I will definately be thinking about uprating my shocks though when the wallet refills itself...lol

lee

Last edited by l.chadburn; 09-21-2010 at 05:00 PM.
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Old 04-20-2010, 05:24 PM
  #28  
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Lee,

Comparing the pictures of your car and mine (on the previous page), I'd guess that mine is slightly lower than yours. Measuring the ride height to the specific suspension points is the only way to be sure.

Once the C4 gets down to RS levels (mine is 7mm above RS) the steering geometry is compromised by the steering arms sitting at the wrong angle with the consequence that suspension movement results in an inevitable steering change, i.e. the well documented "bump steer". This cannot be resolved on a C4 since the normal solution is to fit the RS uprights - OK on a C2 but can't be done on a C4 since they will not accommodate the front drive shafts.

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Old 04-20-2010, 05:30 PM
  #29  
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Should be ok then. I have driven it on sunday and today and haven't felt anything untoward, but new shocks is definately now on my list...eventually!

How do I measure the ride height, which points do I use.

lee
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Old 04-20-2010, 05:41 PM
  #30  
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Lee,

As per the diagram.

Dave
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