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Bash's Hillclimb car

#1
Evening folks,
I've been Hillclimbing a Clio 182 for the pst few seasons with some good results but after taking the car as far as I was willing to take it I fancied something different, after some thought it turned out to be a 1993 K11 Micra, with just 35k from new and owned by one family (2 people),
I had kept a look out in the usual places and this beauty came up on Scumtree but was in Leicester (120 miles from me in Yorkshire), it had covered just a couple of thousand miles over the last years but handled having it's arse kicked all the way back home with ease on less than 1/4 tank.

$_86.JPG


It's a 1.0 base spec 'shape', Plans are for a bit of Hillclimbing in the 1a (up to 1400cc) class next season at Harewood.
 
#2
I have acquired a set of Koni Adjustable coilovers to help in the twisty bits, the rear end will be Koni adjustable rear dampers and MK3 focus rear springs cut down from 8 coils to 6 giving a rear spring rate of 200 lb/in, by my basic calculations, the other thing I did find for the rear is Saab 93 rear dampers will bolt on and are 80mm shorter in both open and closed length than the standard micra shocks and are much stiffer on the damping

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pork

Club Member
#5
Regarding the Saab dampers......which year you use? Was there any mods to make them fit?


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#6
They were from a 2004 saloon, but any 93 from that type shape should fit,
there are several different ones for the spec of car e.g. stiffer for estate version etc, the sticker on them come with the part number and a colour code (mine are red but did see green and yellow at the scrappers too),

they fit just like corsa rears just needing the lower bush narrowing slightly
 
#9
It certainly is,

Other parts purchased to fit or now fitted include:
Whiteline Rear ARB
Standard 1.3 Front ARB (hopefully this set up should neutralise the understeer a little)
Janspeed system
LUK Clutch
rear crank seal
1999 1.0 gearbox and shafts (stronger than the early 1.0 and better ratios apparently)
Volk TE37 in 13x6 et25 (3.3kg each)
HOL engine/gearbox mounts
Whiteline castor kit

I'v also seam welded the wishbones,
Solid mounted the gear linkage rod to the under side of the tunnel, the one that's normally mounted to the rear lower engine mount,
under the advice of Matt Humpris,
and made a pretty convincing home brew Group A intake copy out of a mixture of saab and volvo intake pipes.
 
#12
The engine is fitted and running well, it revs like a bike, the idle isn't the best but liveable,
the corsa koni coilovers are fitted,
still to fit the whitteline rear arb and castor/traction kit
I think I'm going to fit a de-powered 3.1 turn steering rack as the 3.9 turn non pas rack is turd.

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#15
Here are the rear shocks
top is standard k11
middle is corsa 'c' koni adjustable
bottom is 2002 - 2012 saab 93

the saab and corsa shock are the same length but the corsa one still has a rubber bush fitted in this picture making it look slightly longer.

the lower bush width is
standard k11 = 32mm
corsa 'c' = 34mm (needs narrowing by 2mm)
saab 93 = 37.5mm (needs narrowing by 5.5mm, there is enough material to take this off easily enough)

top stud diameter (where the strut top bush goes)
k11 =10mm
corsa = 12mm
saab =10mm

fullsizeoutput_3c2.jpeg
 
#17
Started knocking the rough edges off the casting of the spare head,
does any one know how much valve lift you can get away with on the standard valve springs before you start getting coil bound, I'm undecided to go with the autosprint cams or the piper ultimate road with 9mm of lift

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frank

Club Member
#18
i ran the 10mm autosprints with the washer removed from under the spring np, and those inlet ports are a bottleneck eh, i opened these about 2mm

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#19
cheers frank,
I'm going to knife edge the bridge between the ports a little more and then just smooth the exhausts a little,
10mm lift seems fairly extreme on a 28mm diameter valve, do they do more options on the regrinds?
do you know what Matts 773 cam specs were?
 

pork

Club Member
#23
274......think that's what he said, gunna be messing about with shims tomorrow

Geoff sounds like a nice bloke, and was really quick with the turn around


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#25
Here are the rear shocks
top is standard k11
middle is corsa 'c' koni adjustable
bottom is 2002 - 2012 saab 93

the saab and corsa shock are the same length but the corsa one still has a rubber bush fitted in this picture making it look slightly longer.

the lower bush width is
standard k11 = 32mm
corsa 'c' = 34mm (needs narrowing by 2mm)
saab 93 = 37.5mm (needs narrowing by 5.5mm, there is enough material to take this off easily enough)

top stud diameter (where the strut top bush goes)
k11 =10mm
corsa = 12mm
saab =10mm

View attachment 55074
Whats the length of a corsa b or saab rear shock? Dont have them in my country need to find an alternative

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#26
Well I better update this, the car had it's first official outing at Harewood Hillclimb on the 25th of March and performed very well managing an equivalent of a second in class 1 and finishing just 0.07 of a second behind the current record holder in a very rapid Nova.

The car has had been altered in spec slightly, it's currently
22mm front and rear anti roll bars
Koni Vauxhall Corsa front shocks with 180lb springs
Saab 93 rear shocks with HOL Tarmac springs (cut down by 2 coils)
Janspeed 4-2-1 manifold with stainless full system
100nx air box with K&N
1.6 injectors
Adjustable FPR (53 psi with no vac line on)
2.6kg TTV flywheel
Solid engine mounts
98 spec box
The car made 101bhp on RS Tuning's conservative rolling road with a AFR of 13 to 1
the car has been corner weighted and came in at 749kg with 1/4 tank of fuel.

Ordered this week
773 cams
and the ecu is going to Ed for a Nistune board


IMG_3074.JPG
 
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LiamC

I've ruined my car 🙁
#28
Well I better update this, the car had it's first official outing at Harewood Hillclimb on the 25th of March and performed very well managing an equivalent of a second in class 1 and finishing just 0.07 of a second behind the current record holder in a very rapid Nova.

The car has had been altered in spec slightly, it's currently
22mm front and rear anti roll bars
Koni Vauxhall Corsa front shocks with 180lb springs
Saab 93 rear shocks with HOL Tarmac springs (cut down by 2 coils)
Janspeed 4-2-1 manifold with stainless full system
100nx air box with K&N
1.6 injectors
Adjustable FPR (53 psi with no vac line on)
2.6kg TTV flywheel
Custom front lower suspension brace
Solid engine mounts
98 spec box
The car made 101bhp on RS Tuning's conservative rolling road with a AFR of 13 to 1
the car has been corner weighted and came in at 749kg with 1/4 tank of fuel.

Ordered this week
773 cams
and the ecu is going to Ed for a Nistune board


View attachment 57105
What do you find the anti roll bars like? I've a 25 front and a 22 adjustable rear to go on soon just wondering

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#29
I tried standard front and 20mm rear for a while with 325lb front springs but it was trashy and tended to understeer
now with 22mm F & R ( rear is on hardest hole setting ) and the 180lb front springs it's far more nimble and roll stiffness is massively improved.

It's a matter of suck it and see with your 25mm bar I reckon as there's so many variables like tyre's, shock damping rate, geometry etc that will effect how the car feels.
 

LiamC

I've ruined my car 🙁
#30
I tried standard front and 20mm rear for a while with 325lb front springs but it was trashy and tended to understeer
now with 22mm F & R ( rear is on hardest hole setting ) and the 180lb front springs it's far more nimble and roll stiffness is massively improved.

It's a matter of suck it and see with your 25mm bar I reckon as there's so many variables like tyre's, shock damping rate, geometry etc that will effect how the car feels.
I should ask Matt Humphris what spring rates the hol springs are and go from there. I have adjustable drop links for the rear too so plenty of room for fettling

Thanks for the info on that I'll have a good read up of different set ups

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#34
End of the season now and mission accomplished with the car delivering a 69.72 on it's last outing.
the car has run faultless all season, hopefully over the winter I will have time to get the big bore 1350cc motor in it and i'm considering a dog box to see if I can get near the class record.


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