With a trackday looming up at Blyton, the FIMCA is up & running but I decided it was time I got the Honda twin cam powered SIMCA 1000 back into action. The engine and box had to come out to investigate a complete lack of drive. This turned out to be a pinion completely stripped of teeth. Somebody's 'dodgy' gearbox rebuild in the past rather than my mixture of clutch parts that I'd initially suspected. I was hoping to incorporate a few parts I've acquired when everything is reassembled into a better 1000 gearbox....And AP racing clutch and a much lighter Honda flywheel.....
While everything was out of the car I decided to lose some weight by cutting off the redundant diff housing from the Honda bellhousing. This is mated to the SIMCA gearbox via a steel plate. The SIMCA bellhousing had to be cut back to the flat face that makes up the rear of the diff housing.
I originally replaced Honda's injection with a pair of Dellorto 40 DHLA carbs from a 1.6 Alfa (£60 from an Autojumble) on a SIMCA 1000 manifold which fitted using a home made sandwich plate. The Alfa jetting seemed OK for the Honda engine when I tried it last year....so I've left it at that so far. Sparks come from a SIMCA 1100 distributor adapted to fit up to the end of one of the cams.
Didn't finish puttng the SIMCA together ready for the Blyton trackday yesterday so took my 'FIMCA' instead.... a FIAT/SEAT 133 with its 850 engine replaced by a 1294 SIMCA unit with Rallye 3 cam running on Honda bike carbs. The 205 GTi was driven by Philippe, another of our SIMCA Club UK members.
While the car was in bits I took the chance to do a few welding repairs... the car was built from a 1000 rescued from a scrapyard back in 1985 after all..!! I've also fitted bigger arched but lighter rear wings to clear the 205x60x13 tyres It needs to up the gearing to suit the Honda engine. The wings came from the 2010 Bastogne ISM.
Have bought another Honda powered SIMCA 1000. Needs finishing but has a Hond CRX B series twin cam Vtec engine fitted. Engine currently resting on trailer winch. The mounting crossmember that Steve who'd started the conversion planned just needs completing. It should then avoid the Honda mounting poking through a hole in the rear panel as on my Honda/SIMCA 1000.
Now it's up & running time to go round with the welder...especially on the rear chassis legs, one of the few remaining original SIMCA bits on this car that hasn't been reinforced or replaced with some real metal..!! Have added a bit more silencing... a Honda twin cam on carbs isn't quiet..!!!
Sunday saw a day's 'testing' at a trackday at Blyton Park in Lincolnshire. In between things breaking, the SIMCA really does GO but we were dogged all day by niggling faults. The bigger rear arches allow the suspension to work properly with no tyre rubbing and the Clutch seemed well up to the job. Minus points were a broken throttle cable...on the day I'd forgotten to take a spare..!! ...the gear linkage falling to bits and plug leads coming adfrift. We managed to bodge the above to keep it running but eventually called it a day when the misfire kept returning and the gearbox started wailing. The plug lead problem was the SIMCA distributor I'm using. Its mounting is obviously not ideal and massive vibration sets in at 8000rpm. A Honda 2 wire distributor from a late carb equipped Civic haas been supplied by ebay to cure the ignition woes. Cable and gear linkage problems are easily solved. The gearbox issue may mean upgrading to a Renault UN1 box from my scrap Espace but that's a jb for the winter.
Having a short break from work on my 1200S coupe and 1100 pickup to sort out a few problems on my trackday 1000 ready for a forthcoming event. After a few problems on the last outing at the Blyton track, I've replaced the notoriously 'fiddly' 1000 throttle cable which is prone to sticking with a full 2 metre long inner & outer cable running on top of the centre tunnel. The distributor problem is being solved with a honda '2 wire' distributor from one of the last twin carb Civic/Rover models found on Ebay. These are a very handy unit with everything for the electronic ignition, including the coil pack, contained under the disributor cap. Of course true to form, I've complicated things for myself trying to fit it to a twin cam engine which , on UK models at least, was only ever fitted with injection, an ECU and a very different system. The 2 wire distributor fits straight on to the SOHC engines but is physically larger than the twin cam's original unit and uses different mounting lugs. A bit of rearrangine of cooling hoses and fabrication of brackets should make it fit. Photos to follow.
Will take photo of the Honda distributor on my trackday 1000 tomorrow. Here's a photo of the same distributor on an SOHC Honda engine fitted in my Brother's SIMCA 1100 Special. My 1000 wasn't ready in time for the trackday last week so I took the FIAT 133 in which I've fitted a 1294 SIMCA engine with a Rallye 3 race cam and Honda CBR600 bike carbs. ...see other photo