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I'll ask them and see how far I get
Was working on the new ignition loom lastnight. Hope to have it finished and installed at the weekend so that I can crank it up to run on both sets of plugs. Following a good wash (the car) I'll finally make my way over to Specialist Components dyno.
I'll run this ignition loom along the side of the Motronic one for the moment and properly integrate it when I make a new custom loom (been reasearching and collecting parts for this).
Sparked up the ole girl this evening on both coil packs. A few teething problems to begin with. I couldn't get it to start, not even a cough. I checked the plug ordering, pairing and low tension connections - all were good. It was then that it occurred to me the last time I ran the coil packs, the dizzy was still present with the hall phase sensor plugged in. That'll be it - the ECU is still expecting a cam phase signal to run sequential injection. A quick play with the config and it was then setup for batch injection. Started first turn and purred away. Was great to hear it run again after several weeks Later on I'll have to investigate and machine up a mount for a hall sensor on the camshaft. I don't have an engine driven power steering pump so that is the obvious place to mount it.
Anybody know of any existing products that do this? I can' be the first to need one
Yes they would. I'll have a snoop about on the other forums. Clewett have several options but they're so darn expensive once you've added shipping and import tax. Unless I find something UK side I'll probably machine one up.
Just ordered a throttle position sensor (direct bolt-on to replace the 2 throttle switches) and a cam hall sensor from Specialist Components. I'll machine up a mount to suit it
It occurred to me that you could mount your coilpacks on a plate bolted to the bottom half of the standard dizzys (in place of the dizzy caps) - that way you can use the factory hall sensor and you get a mount that you know is "engineered".
It's possible yes, but I don't want to butcher my dizzy. They're just too valueable. It also won't go far in reducing part count / simplicity and service items.
After last nights test, I don't have any concerns on the coil pack mounting. I'd put money on it being more secure than a modified dizzy base
Hey Rob, meant to post yesterday whilst sitting in a meeting (!), but may be worth having a look at my thread for the pics of the rear mounted turbo oil scavenge pump housing.
Not sure what bosses/castings are on the back of your cam carriers (same?) but I modified the housing that usually has a toothed wheel for driving the smog pump. I'm running 964 NA cams, so I needed them lengthening with a spigot which then drives my oil pump (you don't need this of course) then I removed the air pump drive, machined off the outer (and now using it as a coaster), retaining the centre section. Into this I've made a pickup, threaded so that the clearance to the HE sensor can be adjusted. Then, on the air pump drive housing, I welded in a HE sensor boss/plate which then allows the sensor to sit over the pickup. Very simple - I have a spare mounting plate for a sensor if you need it.
Anyway, thats a very wordy way of explaining what's in the link above....I also closed off the aperture where there was once the smog pump belt, just keeps things cleaner in the long term.
Hi Spenny, thanks for the ideas. The backs of both cam carriers have 3 bolt holes which could be used to fasten some kind of housing to.
When I removed the PSP I fitted one of these Rothsport blanking plates
Looking on the Clewett website, their cam hall sensor housing (uses bank 1)requires drilling and tapping into the end of the cam to fit a pickup bolt. See the fitting instructions
I'd rather use bank2 for this as from previous inspection I know some gibbon has sheared a bolt off in one of the three holes on the bank1 cam housing. (No, it wasn't this particular gibbon).
Thing is, I ordered the hall sensor from Specialist Components 'unseen' so until it arrives I've no idea what it looks like or how I'll fit it.
Thing is, I ordered the hall sensor from Specialist Components 'unseen' so until it arrives I've no idea what it looks like or how I'll fit it.
Ah, I lay a pound-to-a-penny it'll be the standard fare hall effect sensor that's being used everywhere, same as I'm using for crank, cam and wheel speed sensors.
(these aren't the teeth I'm going to be reading on the front stubs, was just positioning it to show somebody)
Not tried it, but am pretty sure they're the same geometry as the ABS sensors as well.
The throttle position sensor and cam hall sensor turned up the other day. After eye-balling the cam sensor in its proposed position, I'm not left with any options other than turning a housing up for it on the lathe. That'll be a job for a little later on since the car will drive fine without it for now.
The various electrical changes I'm making to the engine mean the standard engine loom will be swapped out for a custom one. The std Porsche engine loom combines the ECU functions and the dashboard instruments in the same loom. I wanted to separate this into two. I tackled the engine instrument loom first and re-routed some of the wiring (oil temp & v-belt) from the left to the right hand side of the vehicle loom so that they enter the engine bay altogether with the other instrument wiring. I then made up a custom loom which connects all the dashboard instrument sensors up and terminates them in a 13pin deutsch connector. This loom takes the wheel-speed sensor, reverse switch, oil-temp, oil-pressure, low-oil-pressure, v-belt and alternator charge indicator. This simplifies things quite a lot for when I move onto the engine ECU loom. Getting shot of the Porsche engine loom certainly cleans up the engine bay too
Next job is to fit the alternate connector into the loom as it enters the engine bay in the RHS corner.
Ha! I've gotta a few years worth of mods to go before getting close to that
I won't be doing anything to the car over the summer months that require taking it off the road for more than a weekend.
02-05-2015, 04:36 AM
