Not Your Everyday Race Car - The Mighty Citroen

Not Your Everyday Race Car - The Mighty Citroen

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Mark Benson

Original Poster:

7,520 posts

270 months

Monday 31st October 2016
quotequote all
I've been racing for quite a few years now, from Locost to Porsche, single seaters to saloons and one of the highlights of the 15+ years has been the 2CV 24 hour race, which a few PHers entered as a team way back in 2007.



It was a way of spending relatively little (under £2k, everything's relative in motorsport) yet getting the experience of racing through the night, just like Le Mans. One of my fondest racing memories is doing the graveyard shift as the sun came up and Snetterton went from night to morning.

The then team manager (Rich, more of him later) and I always said we'd do it again but never got round to it and with the scarcity of viable 2CVs and the increasing cost of building a car we'd only realistically use a couple of times a year, we thought that was it. Short of buying a seat with an established 2CV team, we'd only be able to do a 24 hour race again if we shelled out for something like the Silverstone 24, which was a world away in terms of cost. Even the car we currently drive, a Boxster would need a lot of work and the entry and running costs would be prohibitive.

But then Rich got wind that, thanks to falling numbers of 2CVs in the 24h they were considering a new class for something more modern, and a plan was hatched.

Ebay, Gumtree and local bomb-site garages were searched, breakers were called; the base car wasn't going to be found in Racecarsdirect or the PH classifieds. Eventually we tracked down a low mileage example near Pontefract and as I was passing, I went and gave it a look over - it was perfect and the deal was done - a Citroen C1, in Yorkshire Racing Blue with 46k on the clock and a Cat C recorded for a bent wing and cracked bumper.

68bhp of pure power and a free CD in the player 'Old Skool(sic) Rave Classics' that kept me entertained up the A1 for all of a junction.



The rules state that not a lot can be done to the car to make it go faster apart from taking out the seats and the carpets, which we'll then replace with a great big metal cage and a fire extinguisher. No engine mods, no wikkid 'zorst, no Pipercross 'yeah mate, adds 20 horses' air filters and no modifications to the head or bottom end.
68bhp is what it came with and it's my job to try and make sure it still has 68bhp at the end of 24 hours racing.

So far I've put it up on axle stands, pulled the bumper off and taken a load of bits off in a fairly random order, thus:



Bought a load of new bits, the kind of things you service it with and the kind of things that go wrong; plugs, filters, belts, water pump and alternator:



(that's the old alternator next to the new one by the way, we're not made of money! I just wanted to make sure they were the same before I fitted it).

I then drained the coolant by spraying it all over the engine bay (it has a drain plug, how novel. I just pulled the bottom hose off and then did the other hoses one by one. Should have waited for the Haynes manual).

And that's where we are today, a granny-car and a pile of bits that need to be a race car by spring.
I have a reasonable mechanical knowledge from maintaining and fixing cars over the years but I'm an IT manager, not a race car engineer.

I'm under no impressions, there's loads to do (this is just the start) but having not done this before I'm naively working on the premise that it's just a case of working out the things I'd expect to be done to my race car by a professional builder, then learning how to do them myself. Easy!

Oh, the other problem, I'm in North Yorkshire and my build partner is in Gloucestershire, so guess who's doing the majority of the work (I get a lot of encouragement by text though).

Updates as and when I do something noteworthy/break something/need advice - Wish me luck.

More random pics:

Bumper inside the car, I'm not overburdened with space at home so it seemed a good place for now:



Where the drain plug is and where the alternator was:


Mark Benson

Original Poster:

7,520 posts

270 months

Wednesday 2nd November 2016
quotequote all
skeggysteve said:
Looks like fun Mark!

The regs look very tight on modifications which should keep down costs.

Are you getting the cage welded in? I'd recommend it as it will make the shell stiffer than a bolted in one. I've got a small welder if you want to borrow it.

You know where I am if you want any help/advise etc.

Oh, do I recognise the garage extension?!
Hi Steve, yes it's a very limited set of modifications but it keeps costs low and it's all about the drivers rather than the amount of money they can throw at their car.
Yes, we're welding the cage in, but I won't be going anywhere near, my welding skills are 'primitive' to say the least (farm welding) so I'll just take it to my local bodyshop who'll do it for biscuit money with any luck.

Any time you want to come up and visit you know you'll be welcome (and yes, that's the mini-extension but it makes a huge difference).

Mark Benson

Original Poster:

7,520 posts

270 months

Wednesday 2nd November 2016
quotequote all
So, progress (well, a little bit).

I'd noticed a weep of oil down the front of the block and according to the dealer service manual I found online (thanks to the C1 owners club, yes there's even an owners club for these) I know there's an oil/air separator bolted to the front of the engine, But that was behind the cat, so that came off (with a lot of Plusgas and swearing).

It's the black panel (with oil weeping from beneath it funnily enough)in this photo:



Close up:



So off came the hard water pipe in front and off came the panel, sure enough the sealant was missing on part of the panel (bottom left bolt hole, you can just make it out in the photo).



I cleaned up the panel ready for a new bead of RTV sealant (when I get out and buy some, mines about 5 years old - I used a boatload on the Landy we used to have).

I refitted a couple of bits, just to make me feel better - water pump and hoses complete with shiny jubilee clips instead of the knuckle-shredding clips the manufacturers use these days.





onwards and upwards. Sump drop next, 9 years of accumulated 'stuff' in the bottom of the sump and a hunt for swarf.

Mark Benson

Original Poster:

7,520 posts

270 months

Thursday 3rd November 2016
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olly22n said:
Citroen said:
We're offering everyone the opportunity to enjoy any Citroën vehicle with a 24 hour test drive. The only question is…where will you go?
Spa, back in 24 hours. Might need new tyres. biggrin

Mark Benson

Original Poster:

7,520 posts

270 months

Friday 4th November 2016
quotequote all
sprogthedog said:
This place is a bad influence.

A gang of us are now seriously considering doing this!!
Go on, you know you want to......

Mark Benson

Original Poster:

7,520 posts

270 months

Monday 7th November 2016
quotequote all
RoadRunner220 said:
E34 said:
A few likeminded mates and I are excitedly planning on building a car for Spa next year.

Do you know if you can race on a National B license?
A couple of years ago I needed a National A license before I could race at Spa.
I think it's Nat. B for the Snetterton 24h race (assuming it is Snett next year) but Spa I think is Nat. A. There may also be the opportunity for some 2 hour races (Rich knows more than I do about it) during the year so you might be able to get signatures to upgrade fairly quickly.

Mark Benson

Original Poster:

7,520 posts

270 months

Tuesday 8th November 2016
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Lagerlout said:
C'mon, you're not tempted to port the st out of everything whilst you're in there?? wink
Very, but they have a nifty rule (from the point of equalization) that if the organisers think you're running a quicker engine, they can request you change it for a 'stock' engine from their supply.

Which is why, as long as there's no nasties in the sump I'm leaving the head on smile

Mark Benson

Original Poster:

7,520 posts

270 months

Tuesday 6th December 2016
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Prizam said:
RichUK said:
joe_90 said:
Do we all need race licenses?
Yes. National B for the UK races. National A for the European ones.
Do you need to attend all races?
I've never been in a race series yet where attendance was mandatory, so I doubt it.

Really need to get my backside in gear and get on with the car, man-flu and some time working away and suddenly we're in December and I'm no further forward....

Mark Benson

Original Poster:

7,520 posts

270 months

Tuesday 6th December 2016
quotequote all
Prizam said:
So...

Having done a few track days and getting "the itch" from reading this thread...

Take me through the process of joining up and racing in this series. Does National A mean you don't need B as well... or does one progress from the other?
Get your 'go racing' pack from the MSA (Motor Sports Assn. The sport's governing body in the UK) here.

Fill out the form, get a medical from your doctor, do the license test, pass and you'll have a National 'B' license.

Join the organising club in the new year (usually a nominal fee) and they'll update you with details of the races they're organising.

Choose the race(s) you want to enter and are eligible for, and enter them smile

You'll have a yellow and black 'Novice cross' on the back of the car but will be allowed to race in all the UK events. For each event you complete over 2/3rds (from memory) of without a visit to the officials you'll collect a signature on your licence upgrade card, 6 signatures mean you can take the cross off and apply for a National 'A' license.

You can also get a signature for spending a day on a marshal post and/or taking the MSA's advanced test I think.

Mark Benson

Original Poster:

7,520 posts

270 months

Tuesday 6th December 2016
quotequote all
Krikkit said:
Prizam said:
Mark Benson said:
Get your 'go racing' pack from the MSA (Motor Sports Assn. The sport's governing body in the UK) here.
Thats cheap. Thruxton charge £310. Whats the difference?

What is the ball park cost of the C1 series? Cant find it on the website.

It mentions 3 mandatory driver changes, can this be between 2 drivers?


Thanks so far, you are a great help.
You need to pay for assessment time, hence £310.

Costs are noted above, car prep with standard dampers is ~£3k, plus your racing fees on top. I'd over-estimated the costs a bit when I worked it out, but I also included costs for a 24h race.

Increasingly tempting!
Yes, you still need someone to do the exam, Thruxton are offering an all-in for £310 which sounds about right.

Race costs; well as far as I know none have been published but the 2CV club that this series was born out of charge £400 for a 2 hour enduro race so budget double that for a 4 hour and you should be fine.
I'd be surprised if 24 hours was £200/hour though; I wouldn't like to speculate on what they might be but the 2CV 24h race cost about a grand each for 4 paying drivers and and we were effectively hiring the car as well as entry fees, fuel & catering etc.

That's why more drivers mean more accessible racing, get a third person involved and get them to pay for (ie. 'rent') their seat as well as their entry fees and your costs decrease, a fourth and they decrease a bit more - use the asset you've built to help cover your racing costs (but don't ever expect to make money on it smile ).

Mark Benson

Original Poster:

7,520 posts

270 months

Tuesday 6th December 2016
quotequote all
We paid £1250 for the one in the OP. It's a Cat C with 46k miles.

It was from a breaker who'd bought it and realised it was too good to break so put it back on the road, he wouldn't say what he bought it for but you can bet it was under a grand (if you factor in a new wing on the car and some dents pulled out plus a fresh MOT).

Took a bit of searching for though, there are a lot of over-valued high-milers around. Ebay, Gumtree and word of mouth plus calls to breakers locally just in case they've picked something up from the insurance companies.

Mark Benson

Original Poster:

7,520 posts

270 months

Tuesday 3rd January 2017
quotequote all
More dates up on the site, all are currently to be confirmed but it's shaping up to be a very international series:

http://c1racing.club/2017-calendar/

Spa in April, Croix in May, Anneau du Rhin (no, me neither. On the Franco-German border near Strasbourg according to Google) in June, Pembrey in July, August off, Cadwell September, Spa October and Anglesey in November for the RoR.

I told my wife I'd be doing fewer events in 2017. Maybe not.

Meanwhile, progress made and pitfalls experienced on the blue beast over the Christmas break. Photos and waffle to follow......

Mark Benson

Original Poster:

7,520 posts

270 months

Tuesday 3rd January 2017
quotequote all
Smitters said:
Maybe I'm misunderstanding but if you need Nat A to race Spa (and presumably the other Euro tracks), it would take several years of just doing the UK tracks to progress from the Nat B/yellow cross and get signed up to Nat A and be able to enter all the races in the series. Am I being a bit thick?
No, you're quite correct. You need 6 signatures to upgrade, one of which you can get by spending a day with the chaps in orange so you need to have done 5 UK races on a Nat. B to get a Nat. A.

You can enter any UK club race with a Nat. B though, so you could enter enough saloon car races (there are several regional championships, plus Trackday Trophy, Tintops etc) to gain your signatures more quickly, though it's doubtful you'd be competitive in a C1.


I suspect the international nature of 2017 is as much to do with the difficulty of getting a completely new series on an already packed club calendar here in the UK.

Mark Benson

Original Poster:

7,520 posts

270 months

Wednesday 4th January 2017
quotequote all
So, progress.....

I finally got a bit of time on the car over Christmas, so first job was to drop the sump, no nasties but no pictures either as I was so keen to get on with the car I forgot to take any. Once the sump was back on, the oil/air separator panel went back on with liberal RCV sealant and a (not very interesting) picture as well:



So then back on with all the ancillaries and fire her up..... Well, almost. Someone forgot to connect up the alternator (I'd taped the wires out of the way) so it wasn't charging. Like a hero I found the fault immediately but in my self-congratulatory rush I forgot to disconnect the battery and shorted the wires against the bodywork; a big flash and, unbeknown to me at the time a PITA problem for later.

Anyway, nothing leaked so I called it a day.

Next time out it was 'make it look more like a racecar' day so I started on the interior. This was for two reasons, a) for myself, all I'd done so far was a service and b) so I could send Rich some pics that made it look like I was actually doing something.

Rear seats out:



Front seats out:



Trim, carpet and upper dash out:



Also took the sound deadening out (the deadening in total weighs about as much a a handkerchief, no wonder these cars are noisy on the motorway).

There wasn't much more I could do without the stuff we're going to be buying at Autosport next week or the cage, lower wishbones and modified driveshafts (all club parts that Rich is buying/has bought) so I thought I'd start it up and drain the gearbox oil ready to swap the driveshafts and wishbones over.

It was then I noticed that the battery and power steering lights didn't go out when the car was running.

I checked the alternator, there was current. I checked the fuses in the fuse box, they were all intact. I checked the continuity from the alternator to the battery - nothing. Bugger. Those sparks when I refitted the alternator terminals had something to do with it I'm sure.

So in desperation I turned to the Haynes manual. The wiring diagram has a master fuse yet the entire manual fails to mention it's location or even that the car has one. I traced the wires from the alternator, having to take apart a lot of the bits I'd recently reassembled - nothing. There was definitely a broken link and a fuse was the only logical reason, the cable running from the alternator to the battery was too thick for a short circuit to have melted it.

Long story short I set about taking the fuse box out to see if I could get a look behind and......



Not the best picture, but you see that big metal plate on the front of the fusebox? That's a fusible link and it should be, erm... linked all the way across. It's not and because it's moulded into the fuse box at the factory I need a whole new box. £100 from Citroen or £27 from a breakers on ebay.

Not the most expensive lesson in financial terms, but a whole morning lost and at least another one to get everything back together when the new fusebox arrives. Lesson learned.

Autosport next week and a bit of a shopping spree (costs so far including the car and all service parts, around £1500).

Edited by Mark Benson on Wednesday 4th January 13:49

Mark Benson

Original Poster:

7,520 posts

270 months

Thursday 19th January 2017
quotequote all
So, we've been shopping at Autosport.

I'm currently waiting for a big Demon Tweeks delivery as I type (although it's 'out for delivery' with Parcelfarce, so it's probably in France or somewhere), but in the meantime I've been finding out just why you always, always disconnect the battery when working on the car's electrics. What. A. Pain.

To recap - I blew the main fuse which is moulded into the main fusebox on the car - so just buy another fusebox I thought, swap it in and solve the problem.

Oh no. It wouldn't be that simple.

£27 bought a box from a breakers, and the first thing I discovered was that half the plugs from the loom into the box do not want to be removed. At all. And this is on the bench where I can get at the underside of the fusebox, not in the car where access is severely limited.

So I did what any self respecting bloke would do, I took it apart.

An intact master fuse, and some very, very stubborn multiplugs:



Many, many pieces:



That's the bit we want, but how do I get it into the existing fusebox?



Ah yes, powertools are the answer:



An intact fusible link in the original fusebox:




So, off to Autosport and a good poke about a semi-finished car on the BARC stand and a good chat with someone official, who's name I didn't catch but Rich seemed to know (he's good at business stuff and talking to people without upsetting them so I leave that side of things to him):

Nice to see another 'not red' car being built:



Same seat as us. In the background is the official person (red jumper) talking to someone I recognise but can't place:



Cage in situ, but the shoulder straps are bolted to the floor nono



Home again and waiting for the big order from Demon Tweeks, Lifeline and a load of other places, I started making a panel for the cut off and extinguisher.

Rivnutted ally plate and a big hole cut out for cables:



And a plate cut to go round the cup holders - endurance racing takes ages, we might want a McDonalds Coke on the Kemmel straight. Always thinking ahead you see.



More drivel like this when the goodies arrive. Apologies if it's all a bit too detailed, it's as much for me to document as for anything else (and to publicly self-flagellate about the stupid mistake blowing the main fuse, can't beat a Catholic upbringing....).

Mark Benson

Original Poster:

7,520 posts

270 months

Friday 20th January 2017
quotequote all
geeks said:
Good work. We were on the BRSCC stand next door, went and had a long chat about this as we are putting one together as well following a chat at RoR. Currently trying to find a donor car that is NOT RED (very unusual for us, two of the three guys in the team race red cars elsewhere) I did notice a few entertaining things on the show car, no door cards, harness angles and the like but its a show car that's what they are for smile many a motorsport show car i have seen with fully blacked out windows because inside they are either empty or standard cars hehe

When does your cage arrive?

Also will you be ordering your rubber pre-shaved? (matron!)
We have a cage, it's just that it's currently sitting somewhere down south, Rich is coming up to do some standing about work on the car next weekend, we'll do the trial fit of it then, mark up the feet for welding etc.

And yes, we'll be shaving our rubber, that's one of the few jobs I've entrusted to Rich.

Steve - I put red threadlock on the rivnuts, araldite is too messy (plus I have a mandrel for my air riveter so they're not likely to come loose anyway).
And Elvington would destroy tyres (as we know!) on this, road tread would just disintegrate. At least like everything they're cheap though, £40 or so a corner, I'm used to paying 5 or 6 times that.

Mark Benson

Original Poster:

7,520 posts

270 months

Friday 20th January 2017
quotequote all
Oh, and the first load of Autosport bits came yesterday evening (as expected Parcelfarce driver didn't bother to knock, just left it with a neighbour, the package was squashed and had footprints on it. Their usual high levels of customer service then....).


Mark Benson

Original Poster:

7,520 posts

270 months

Tuesday 24th January 2017
quotequote all
Plate for the cutoff, spotlight switch and extinguisher pull finished. Will install it once the cage is in - hopefully this weekend for the trial fit and marking up the feet, then I need to find a decent welder to neatly weld the feet in (my welding is not neat).



Put the steering wheel in too, forgot to take a picture but it looks tiny (30cm wheel, so it is tiny) but kind of suits the car.

Mark Benson

Original Poster:

7,520 posts

270 months

Monday 30th January 2017
quotequote all
A Very productive weekend on the car. Rich came up on Thursday evening and we had all day Friday, all day Saturday and half of Sunday to work on it. We were also very restrained at a Burns night party on Saturday night, resisting the temptation of many, many excellent whiskies, so we could be up on Sunday morning. Now that's dedication.

Picture heavy update:

Friday morning, we needed to drill out spot welds holding 'cups' on top of the rear turrets and remove the lower dash to accommodate the cage for trial fitting and marking of the weld-in feet.

Buying the correct drill bit for the job helps immensely with the former, drill through and whack with a cold chisel:



I set Rich about removing the lower dash, I should state for the record he's done very little 'hands on' car work; he's a businessman and so this is all new to him but it's fair to say he learned a lot this weekend. First lesson was the shortcomings of a Haynes manual where it claims most parts can be 'eased out of position' or 'slid easily away from the dash' when in fact nothing could be further from the truth - they're a handy guide but sometimes you just need to 'give it a good pull'

Rich having a go at the dash:



Dash out, it was time to unwrap the cage:



First up was the rear section with the main hoop, we needed to ratchet strap the feet closer to get it into the car, but once in it sat neatly in place.



We quickly manage to assemble the rest of the cage (no pics, it needed four hands as we found out when I was almost given concussion by a falling section we both thought the other had hold of), marking out the location of the holes in the weld-in 'feet' that the cage bolts to, allowing the captive nuts to sit inside the sills.
We then removed the cage again to drill. The Safety Devices instructions say to allow 25mm for the nuts but it's clear when looking at them that the welds holding the nuts are wider than 25mm and for the feet to sit flat on the car, we used (and destroyed) a 32mm holesaw:



A nice flush fit for the foot:



And the cage sitting back in the car on it's anchors, loosely bolted together. I'll need to take the car for welding then we'll bolt the cage in permanently:



Last job cage-wise is to install the brace bar across between the rear turrets, this bolts through the turret into a plate inside the wheelarch, one of the plates needed a bit of grinding to allow it to sit correctly but eventually it bolted in and we had the cage 'dry assembled':



Next up was the 'club' suspension, this is optional but who doesn't want adjustable dampers and nice machined billet aluminium stuff to play with? Unfortunately we got to this stage:



and found that one of the rear spring platforms wasn't machined correctly, the retaining bolt would only go into the ally spring seat about half way, so that's going back to Gaz this week and hopefully we can get a replacement quickly so I can reassemble the rear end.

Saturday was electrics day, we need to connect the FIA switch like this:



It's not as simple as simply cutting the battery cable, the alternator can surge when the battery power is cut, so that needs a route to earth and the requirements include a need to interrupt the signal from the ignition switch to the coils as otherwise the alternator will continue to provide power to the car and it will just keep running.

Not many pictures, but we started by creating another terminal in the engine bay to connect the 'main feed electrical circuit' in the diagram above into, it's the lower of the two positive terminals in this picture:



We then set about finding the live feed to the ignition switch. The Haynes manual is suitably vague so that was no use, I then managed to find some wiring diagrams for the Aygo online, but they were in Dutch. I was fairly sure they indicated that the live feed was blue on the loom, but didn't want to trust myself so Rich made a call to someone who's built a car and they confirmed we need to cut into the blue wire. It felt like I was in a film trying to defuse a bomb with someone at the end of the line saying "Cut the blue wire":



Not a particularly clear picture, but if you look at the multiplug in the centre of the picture you can see the end of the blue wire.
<Snip> no going back now.

Everything was wired up to the switch and we test fire............nothing.
Eventually we realised that we got the ends of the wires mixed up at the master switch in our anxiety at doing the ignition end, once we corrected that, we had a working master switch that cuts everything once activated. This felt like a real success.

Sunday was running pipework for the fire extinguisher system. the rules state there has to be two outlets in the engine bay and two in the cabin. They recommend one pointing at the fuel rail:



and one at the manifold:



I'll properly fit the bottle and finish the pipework once the cage is in.

Last job for the weekend was to cut down the dash as neatly as possible to fit between the cage, then refit the lower portion:





It'll need a bit of extra support, but a couple of aluminium brackets will do the trick.

It's starting to feel like a proper race car now. Next up is the club suspension kit, which extends the lower arms at the front of the car to give it camber and fitting all new springs and dampers.

We're biting the bullet and booking a test day at Croft on March 13th so the pressure's on a bit now.

Edited by Mark Benson on Monday 30th January 10:38

Mark Benson

Original Poster:

7,520 posts

270 months

Tuesday 31st January 2017
quotequote all
skeggysteve said:
Looking good Mark.

I'll try and get cover for March 13th and come and enjoy the delights of Croft again!

I assume that you've got a decent trailer this time? wink
It still has number plates and an MOT Steve. Rich has a good trailer, but I'll be driving it the 5 miles to Croft smile