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So Ratboy was whinging to me the other day that it seems like he never has any updates about his car and he is sorta right.
After a quick scan of the blog i realized there hasn’t been many updates on his car for a while, this isn’t to say he hasn’t been hard at work on it.
Pictured above you can see Ratboy’s Primo workshop lol, since its return from Garage 7 its now producing 202kw at the wheels and this is great.
However, THE biggest flaw with theres car’s and the Z31’s alike is the stupid rear end design with its crappy semi trailing setup.
At normal “factory” spec height this isnt an issue, at Ratboy spec height the rear has about -3ish deg of camber which is bad news for traction and tyre wear
Pictured here is half of the rear sub-frame, Ratboy has since removed this and replaced the two outward bushes with solid urethane ones and “fabbed” up a camber bracket to help correct some of that negative camber, we eagerly await some completed photos.
Quick shot here of the front ADJ LCA’s, Ratboy tells me that the ball joints where pretty effed! If there are any O.G South Australian Drifters out there they may remember the old Bowzer HR31 drift car, these are from that car. Video Below; i feel bad knowing i helped to strip this thing out before it got crushed so bad ass.
Put the S15 gear in yesterday. Well I say S15. Here’s the shopping list:
S15 Lower Control Arms
S15 Knuckles/Uprights
S15 Hub + Disc
R31 Adj Castor Rods
Z31 Modded Tie Rods
S13 Coilovers with 10kg springs from the Z31 Coils
Z31 Adj Cambertops
Z32 4 Pot brakes
Quite a mismatch there. I was also hoping to use the Z32 slotted discs… neglected the fact that they are hub and disc in one unit, unlike the S15 where hub and disc are separate.


Does it work? No.
The outer tie rod is wound about 4 turns. Fix is already on the way… have made up 25mm spacers. Just waiting for them to arrive.
The Castor Rod is wound out. So much so that one fell out:

Luckily it was after coming out the shop where the guy washed his hands of it after looking at it. Slow speed meant I knew where it dropped and I babied it all the way home with it pulling left under brakes. Solution is to get longer ones duh. Will be getting S15 adj, though I doubt it’ll happen before Sunday (next drifts) so I may have to hope the stock Z31 castor arms will still fit… Fingers crossed!