Scaffolding poles + old VW bits + Rotary engine....
Discussion
Okay, looks like the 2 brand new coils we had were a pair of duff ones, so all that fun was for nothing 
Lesson learnt, if all the symptoms point to coils, even if you've swapped them, it can still be coils....
Anyway, over the weekend we've done a very fast conversion to some D585 Yukon coils - which are rated for more ambient temperature, have a built in heatsink and are also much more powerful, rigged up with some universal leads most of the misfire went away (bar a little @5krpm, but the spark plugs are sooted up from running them before).
Have to say a big thank you to the people at Magnecor, who after a hurried e-mail over the weekend, sorted out a rush order on some custom ignition leads for us to suit the new coils, which arrived first thing this morning, ready to put on and test before we set off down to Minehead on Friday.
I'll get a picture tonight if I remember of the new coil setup! At the moment it's a case of some very fast work to correct the timing and coil dwell maps...
Lesson learnt, if all the symptoms point to coils, even if you've swapped them, it can still be coils....
Anyway, over the weekend we've done a very fast conversion to some D585 Yukon coils - which are rated for more ambient temperature, have a built in heatsink and are also much more powerful, rigged up with some universal leads most of the misfire went away (bar a little @5krpm, but the spark plugs are sooted up from running them before).
Have to say a big thank you to the people at Magnecor, who after a hurried e-mail over the weekend, sorted out a rush order on some custom ignition leads for us to suit the new coils, which arrived first thing this morning, ready to put on and test before we set off down to Minehead on Friday.
I'll get a picture tonight if I remember of the new coil setup! At the moment it's a case of some very fast work to correct the timing and coil dwell maps...
Well, fingers crossed that new plugs have cleared the rest up with the engine warm - went dark before we could get it properly hot to confirm though - nearly put the bloody thing on the M1 twice on the test track trying to warm it up in the dark, gave it up as a bad idea
Off down to Minehead at 4am in the morning for another race, soon find out!
Off down to Minehead at 4am in the morning for another race, soon find out!
Engine and 'box out tonight, 6 pieces of teeth floating around in the diff...whoops.
Looks like fatigue started it off, but flex in the diff from impacts finished it - looking at the shape and angle of the teeth that are missing, perhaps we can make up something to fit behind the crownwheel near the pinion with a bearing or something on just for the crownwheel to ride on when it flexes?
Be a good time for that limited slip diff though, anyone got any money they need to write off through tax as advertising costs?
Looks like fatigue started it off, but flex in the diff from impacts finished it - looking at the shape and angle of the teeth that are missing, perhaps we can make up something to fit behind the crownwheel near the pinion with a bearing or something on just for the crownwheel to ride on when it flexes?
Be a good time for that limited slip diff though, anyone got any money they need to write off through tax as advertising costs?
Edited by PhillipM on Tuesday 27th September 22:34
Engine out, gearbox apart, 5th gear synchro/selector was worn just enough to move ~1mm on the shaft and jam the whole selector mechanism.
Put a 45* bevel on the edges of the selector to help if anything similar happens in future, and 5th gear/selector and it's fork are on the bench looking lonely
Gearbox back together, engine and box back in, radiators back on, fluids refilled and bled, test driven, works beautifully.
4-speed gearbox now, it's lighter, might go faster
Put a 45* bevel on the edges of the selector to help if anything similar happens in future, and 5th gear/selector and it's fork are on the bench looking lonely
Gearbox back together, engine and box back in, radiators back on, fluids refilled and bled, test driven, works beautifully.
4-speed gearbox now, it's lighter, might go faster
Right, after a very rough event at Kirton today, we've managed to claw a couple of places back and end the year 8th overall in the Championship, albeit after battering the skid pans to death, punching two holes in the floor, cracking the windscreen on a hard landing and hitting the engine skid pan hard enough to dent it the whole way across and put a dent in the sump too.
Oops.
This stand-in engine was feeling decidedly unhappy towards the end of the day too tbh!
Writeup later!
Oops.
This stand-in engine was feeling decidedly unhappy towards the end of the day too tbh!
Writeup later!
Edited by PhillipM on Sunday 23 October 19:54
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