306 track car build

SWFCOnet · Unread post by **SWFCOnet** » 02 Sep 2009, 13:13

well i finally found a black 306 rallye

last september it did need some tlc but i think it was a good buy

supercharger kit
wossner 8.0-1 pistons
forged conrods
decked/rebored block
group A gear rods
billet steel lightened flywheel
devil de-cat
magnex system
avo coil overs
tarox 6pots 310mm discs
sparco buckets
pair of Raceland 6 point harnesses
sparco wheel boss
Sparco dished wheel
16" milla maglia
16" speedlines
16" Compamotive mo's
rallye graphics
de-badged grill
single wiper conversion
solid rear beam mount
group n engine mount
rear shocks
upper and lower strut braces
pair of rose jointed drop links
nissens alloy rad
griffiths enginering quick shift
clutch kit
pair of black mask depo headlights
hybrid 24/27mm rear antiroll bar
carbon fibre door cards

There is probably something i have at teh back of the shed that i've forgoten that i've bought but that seams like the lot

This is how it looked back then

a few bits i've working on while the cars been away having the cage

Wossner 8.0:1 Low compression forged pistons 86.5mm

P.E.C. Forged steel rods – have only been test fitted to standard pins.

Pics of the block:

And the cage

The cars not back at mine yet im off on hols this weekend so work wont start back till end of September so not really much progress when you think i've had the car 12 months

MikeT · Unread post by **MikeT** » 03 Sep 2009, 09:22

Like in the Scottish highlands, I understand rallying is popular in the Welsh hills too, or is this going to be a pure track weapon?

Excellent work and so young!

steve_rallye · Unread post by **steve_rallye** » 03 Sep 2009, 09:40

Which charger kit are you using?

Is it one of Rich W's kits with a rotrex charger?

Get yourself on www.306gti6.com

KP · Unread post by KP » 03 Sep 2009, 09:51

Not being funny but should the bores not be as smooth as possible or is that as they wear down??

Are you balancing all the rods and pistons up?

Someone on the coop forum managed to get his all within a few grammes of each other and did it i think by building the piston up as it would be on the car and then got the crank flywheel and clutch balanced up off the car as well, best way to do it i think.

Looking good so far though, all that wieght stripped out now put back in with the cage but im sure it will strengthen it more than enough

what are you going to do to get rid of the over steer issues most 306's suffer from??

MikeT · Unread post by **MikeT** » 03 Sep 2009, 14:28

KP wrote:Not being funny but should the bores not be as smooth as possible or is that as they wear down??

No, otherwise the rings won't get lubricated so well and fail to seal properly. That cross-hatch honing is still visible in my block of 116K miles

KP · Unread post by KP » 03 Sep 2009, 15:48

Ah so its like little cavities where the oil hides in as its sprayed up bore as the pistons is on its upward trip so that as it comes down its lubricated??

I would have thought this would create more friction against the piston rings though as its like sandpaper effectively is it not?

MikeT · Unread post by **MikeT** » 03 Sep 2009, 17:27

I don't know the exact science/design details but that sounds about right.
It does look like a file pattern, I never looked at it that way but I think the actual pressure of the rings against the walls is not so much and the angle of the cuts is slanted, reducing friction further. The fact the rings and bores take so long to wear bear this out.

citrov6 · Unread post by **citrov6** » 03 Sep 2009, 20:17

that looks fun, glad to see you thought about it and put a cage in there instead of a harness on its own.

simply the lubrication from the cross hatch reduces friction.