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How do you fill the wheel arches on a 1986 car?

Masher

Masher

PCGB Member
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I have a 1986 car which I believe to have the earlier type front wishbones. Currently I have something like 20mm spacers all round and 17" wheels with 55 offset all round (typical 911 wheels) and the rear arches are just about filled. The fronts could do with pushing out somewhat to give the desired appearance and possibly a marginal improvement in handling on track. Do I simply fit wider spacers (43mm?) thus pushing the weight away from the hub and making me wonder what this will do to the front wheel bearings or is there another fix? Buy a set of 17" wheels with 15 and 23 offsets? (I have moved the offset in the right direction, haven't I?)

I'm useless at attaching pictures but if I'm lucky there is one below showing the current situation.

1642314154_FB_zpsb443a9be.jpg


Cheers
Mick

F11A719A51C2445CB0236835670227E2.jpg
 
Sounds like you have an early offset car then - pre abs..

I'd say you ideally want the 15/23 offset - adding big spacers must be a weight penalty as well?
This site is a good reference for Porsche wheels http://www.944racing.de/felgengewichte.php
Doesn't look like there are any Porsche wheels in the offset you want. Beware the replica 17" cup wheels - pretty heavy I believe

16" Fuchs would be really cool, and light, but there's not so much tyre choice, and they will be £££. Are you running a square or staggered setup?

FWIW I run 8J ET40 wheels on my track car (late offset) and they fill the arches beautifully with 225/45 tyres.

9546158899_a32e67b44b_o_zps0f1dcd5e.jpg
 
From my short experience using 20mm spacers on the front axle on a late offset car I was not too pleased with how heavier the steering felt. No sure if that's relevant on what seems to be a mostly track car, but perhaps worth a thought.
 
Excuse the naivety of the question but do the later wishbones fit directly onto the earlier cars thus achieving what I want without adding the weight of spacers / replica wheels? Mine IS the earlier, non ABS type currently.

Cheers
Mick
 
I think the spacing is mostly in the hubs - providing the space for ABS sensor arrangement - so probably not that much weight penalty using spacers - not sure if the bearing arrangement/position changed - I have a feeling the rears went from a pair of bearings to a single wide one but that is my memory from about 10 years ago, so could well be wrong! I think the wishbone dimensions may be slightly different but 86 cars already had alloy wishbones rather than the earlier cars steel, and never had a pair side by side.


If you have shocks to fit the early suspension there are some subtle differences in width and hole spacing between the early and the later hubs so you would therefore need new front shocks. If you had the wishbones /shocks hubs from a later car they should bolt up direct to the earlier car and if you replace with the 250 turbo arrangement big blacks/reds bolt straight on (but you then need 17" wheels to clear the callipers)

 

ORIGINAL: edh

Beware the replica 17" cup wheels - pretty heavy I believe
Click to expand...

I have the Cup 1 replicas, and they are indeed fairly weighty. I'm even considering going back to the standard 15" wheels! Mind you, the Cups do look really good, and fill the arches beautifully, especially at the back. (No spacers at either end).
 
One other thought - try & find some ET 40 wheels like mine (They are rears from Cayman or Boxster II) ET40 + 20mm spacers gets you to pretty much the same as ET15 7J wheels.

I got most of mine (i have 2 sets [:D]) via ebay, a couple from PH Sportscars and Jasmine
 

ORIGINAL: edh

One other thought - try & find some ET 40 wheels like mine (They are rears from Cayman or Boxster II) ET40 + 20mm spacers gets you to pretty much the same as ET15 7J wheels.

I got most of mine (i have 2 sets [:D]) via ebay, a couple from PH Sportscars and Jasmine
Click to expand...

Just to help my thinking these are 17" wheels of what width? 7J front and 9J rear? Both ET40... did I get that right? I have a feeling Boxter rears are typically 8J which sounds like it's getting too narrow at the back (9J + 20mm spacers ET55 just about right at the back currently). Could work at the front...

Thanks
Mick
 
Only 8J all round, so depends what tyre width you want to run. 225R is plenty for the S2. Not sure how much power you have but yours is a bit of a custom turbo IIRC?

Maybe it's time to look at other wheels? Compomotive or BBS?
 
Thanks. The car came with a set of 911 turbo twists (staggered 7J and 9J) and I had a couple of sets of 996 10 spokes so I've been using this. I'll find out the power of my car in a couple of weeks when Augment Automotive have finished playing with it and mapping it. Won't be out of this world - maybe 320ish. Based on current experience 8J would mean narrowing the rear which I don't want to do though 8J at the front might put me about where I want to be. It'd be lovely if someone left me alone with 10 sets of wheels and a jack and let me try them on before I buy! I guess wheels aren't quite like shoes! I'll probably end up taking a punt on something on fleabay but advice always welcome first!

Cheers
Mick
 
I used to run my turbo on Pirelli P Zero-C track tyres, 225 width all round on 16" clubsport rims (OK the rears were 9J but still..). It was running approx. 300hp and didn't have any traction issues in the dry. In fact the S2 is a bit twitchier in the slow 2nd gear corners - would be better with an LSD but it's not worth spending that sort of money on it.
 
You will need 17" rims to clear the big red brake callipers you have.

The expensive option would be to buy some of the modern Fuchs offerings that come in the early offset that would suit your car
 

ORIGINAL: edh

I used to run my turbo on Pirelli P Zero-C track tyres, 225 width all round on 16" clubsport rims (OK the rears were 9J but still..). It was running approx. 300hp and didn't have any traction issues in the dry. In fact the S2 is a bit twitchier in the slow 2nd gear corners - would be better with an LSD but it's not worth spending that sort of money on it.
Click to expand...

Some years ago I bought a set of 4 x 225 Pzero-C of a turbo that ended up totalled in the barriers at Brands.

Tony
 

ORIGINAL: DarrylH

I'm on ET15 all round, 10" rear with 8" front on an '86 car.

15165779009_611e3b7399_z.jpg


15352224582_9be85f3308_z.jpg


15329508956_a22c8dd6fc_z.jpg


I think it's filled out quite well
Click to expand...
Spot on. Looks fab. 17 inch wheels? Has your car got the early narrower front track? I believe it changed in 1886/7 (someone will know just when).
If so, I need to follow your lead. Any pointers on wheel manufacturers doing these sizes?
Thanks for the pics,
Mick
 
Cheers Mick, I've got the earlier narrower track. They're 17" on mine.

These are Azev C's. Most people use Azev A's on these cars. I got this set off Nickson Motorsport on here.

I've not long purchased some presents for myself from Tom at Augment Automotive, I'll be interested to here what you've had done and see how you get on after mapping [:)]
 
I have a set of genuine 951 Fuchs here for sale with brand new Kumho Ecsta Sports if interested ?
 
i am guessing the Fuchs are 15 or 16 inch? i plan to stick to 17 inch wheels though i love the Fuchs look.
cheers
mick
 
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