Silvia roadholding problem
 

Hello, After getting my engine running better i'm now looking at improving the suspension. My car seems very twitchy on the back end when pulling out to overtake... feels like the change of road camber unsettles the back end making the rear wheels hop about which don't inspire much confidence.
I was thinking of fitting some uprated rear shocks and changing the anti-roll bar bushes but would appreciate some thoughts or any other recomendations before laying out my hard earned.

sounds like your rear shockers need replacing

KYB do replacement Gas rear shocks. you can up-rate the fronts by replacing the fluid with a higher viscosity fluid (EG transmission fluid)

You possibly may need to replace your rear subframe bushes

Thanks for the suggestions :) . I think I will try replacing the shocks first as I replaced the subframe bushes a few years ago for the mot.
Looking on the kyb website they only seem to list rear shocks for the S13 so do these also fit S12 ?. How much ATF fluid do i need to put in the front shock tubes ? cheers

i got my shocks from DP motor-sport in warington.
with the fronts you need to measure how much fluid comes out and replace the the same amount, (as long as your shocks haven't been leaking)

The service manual goes into the exact amount of fluid required.

I`ve just checked my s12 manual for you.
It says 9.9 imperial fluid ounces, hope that helps. :D
Regards,
Ian.

Lol I'd guess 9.9 fluid ounces being about 281cc

About half a pint (0.495) mmm beer :D

Thanks for the translations :p ...LOL...
I didn`t have a clue what a fluid ounce was ;) .
Regards,
Ian.

Thanks all especially old and rusty for looking up the information in the s12 bible for me :D . Ordered the KYB's ( £41 + vat each is that a good price?) and will be putting 288 cc (i can't think what an imperial fluid ounce is!) of ATF in the front shock tubes. Next thing is a dyno session once i get some ethanol for the water injection and an adjustable cam pulley made up.

You`re welcome mate, any time. :D
I had the manual close by, so it only took a couple of minutes to find.
I still don`t know what a fluid ounce is though...LOL.... (I will have to google it later);) .
If you need anything else looking up, just give me a yell.
Regards,
Ian.

The Imperial fluid ounce is 1/160 of an imperial gallon or 1/20 of an imperial pint or 8 fluid drams, about 1.734 cubic inches or 28.41 millilitres.[1] This volume of water weighs very nearly 1 avoirdupois ounce (it is the volume occupied by one ounce at 62 °F (16.7 °C), weighed in air with brass weights).

Wikipedia is GOD.

That`s pretty comprehensive ;) .
But what does avoirdupois mean (sounds like a french swear word...LOL...)
Regards,
Ian.

The avoirdupois (IPA: [ˌævərdəˈpɔɪz]; French:[avwar'dypwa]) system is a system of weights (or, properly, mass) based on a pound of sixteen ounces. It is the everyday system of weight used in the United States. It is still widely used by many people in Canada and the United Kingdom despite the official adoption of the metric system, including the compulsory introduction of metric units in shops. It is considered[citation needed] more modern than the alternative troy or apothecary or the medieval English mercantile and Tower systems.

Wiki! :D

did anyone test 30psi's theory of s14 rear shocks with the spring cup cut off as a replacment to the s12 std rear shock????

Nope don't think so, and I couldn't be arsed to measure the length of the S12 shocks compared to S14. S13 ones may be the right length but mine just appeared pretty short to me though.

i have a couple of spare s12 rears, if anyone has an s14 or s13 one to test against??? obviously near grays if poss :D

martin i saw you in your motor on the road the other week, but was in works van, so didnt think you would recognise me, looks sweet really does.

Oh cool, where ya see me?

I did measure an S13 shock didn't I? I'm sure I posted up the length

upminster high street, by the charcoal grill :D

thinking now it may have been more a few months than weeks, i dunno. lol

i think you have measured the s13 one, or was gonna, ill do a search.

**EDIT** yeah you did, extended 60cms, ill hopefully go out and check std ones in a bit.

someone on there was gonna try and use some XJR front shocks, did this work??? although for a jag i wouldnt think they would be cheap.

I can't remember being there, but its possible I was getting a kebab for sure

was the middle of the day, you was driving, and you had a passenger, ive slept since, so im a little hazy as to date, or even the day of the week :( i meant you was driving past the charcoal grill :D

Very likely to have been a sat or sun. Could have been heading towards Bramble Lane for a quick sprint

that would sound about right, lol

I noticed there was a 'race prepped' S12 on ebay, the advert mentioned the use of porsche 968 stocks.

Ebay S12 added to ebay for sale page.