Slow burn project- T1 Speeduino EFI

[Bruce.m]

Not much left on the engine except the throttle linkage. Converted the Camsync to a Deutsch connector and made a shim for the crank sensor (using a hall instead of the VR sensor supplied with the crank pulley).

Spent some time looking at options to fit the fuel pump and filter/reg. originally the pump unit sits beside the framehead on the left side. However it’s a bit tight with a long steering arm on that side. Although I have the master cylinder on the right side which should leave plenty of space. Was also planning to keep the filter / reg up front so only a single fuel pipe needed. Still yet to make the final decision.

Was very annoyed to find the tank breather hose was perished. I fitted new hose pieces last year which were ordered from CSP. The tank hasn’t even had petrol in it since then!!! So they have perished without fuel being near them. Now need to find a decent quality generic petrol hose in 5/8” or 15mm ID, and use a elbow connector to get the bend.

[Bruce.m]

Gentle push on the unused hose reveals the cracks.

[Piledriver]

Sadly that's the norm these days.

The newer rubber formulations from Gates etc are pretty resistant, esp the barrier hoses, but the older stuff basically dies sitting on the shelf.
Sometimes the hose will have a date stamp. Sometimes.

I first experienced this years ago after buying into the "awesome" braided nylon covered fuel lines for VWs...
All the braid did was hide the garbage within better...

[Bruce.m]

I think CSP got these made after stock dried up. They are single layer rubber with no internal braid, which isn’t a problem given there is no pressure involved. Very frustrating however.

[Paul H]

For future reference. The central rotor is approximately 22mm diameter and the bore in rotates within is 28mm. That’s too small for a module 1 spur gear with 36 teeth. Would probably need to be 24 teeth or use a smaller tooth size which might be difficult to read.

I use a 12 tooth wheel in my twin sensor device using OEM cam sensors

[Piledriver]

The ATS667 sensor is used in a lot of OE application, the steel RC truck spur gears I use are "32" pitch which is appx 3mm tooth to tooth.
Likely can go finer... a lot of abs wheels are closer than that, pretty likely they are used for those as they are right size.

Sadly I still cant find an OE part# or application for the Sensata "CPO" (combustion pressure only) sensors.
(Look like the pressure sensing glow plugs without the glow part)

I have an evil plan.

[Bruce.m]

Did some work on the throttle body linkage recently. Firstly designing the brackets that mount to the CBR TBs.



I cut down a rivnut to create a metal thread for the Bowden adjuster.

[Bruce.m]

Mounted & with the hollow M6 adjuster + lock nut fitted.

[Bruce.m]

Similar bracket on the right side, picking up available mounting points.

[Bruce.m]

Used heat shrink (the type with glue) to secure the ferrules on the end of the conduit.

[Bruce.m]

Inner cable fitted & adjusted. Seems to work but will be checked / adjusted using a flow meter in time.

[Piledriver]

Beautiful!

[Bruce.m]

Cheers

[Bruce.m]

In the process of stocking up on new plugs, oil, spare oil filter, battery etc. Engines install should be soon, hopefully this weekend or next. Throttle trumpets & filter assembly is partly done in CAD. Final design will probably be done after installation so I can check the clearances.

Did run the Bowden conduit through to the pedal assembly & make a stop for it. The inner cable attaches to the arm with a M5 swivel piece.

Pedals are RHD so have to cross over. Pedal is converted to use a rod end bearing pair which enables adjustment to the amount of travel (between return stop & pedal full throttle stop)

[Bruce.m]

Engine fit didn’t happen last weekend for a few reasons. However the car is up on axle stands ready and I’ve made some extra stands etc to help with the fitting process.

I did attempt to fit a refurbished driveshaft last weekend. Did the messy business of packing the new CVs with grease & getting all the tools, bolts, washers ready. Lifted the assembly into place & for some reason it would not fit, which ever end I tried or method of twisting into place. I retreated to the workbench & quickly realised I’d used the wrong driveshaft (it was far too long). Somehow I’d ended up with a single driveshaft of the wrong sort. So had to dig out the correct pair which needed re-rusting & painting

After a few days in the de-rusting tank, they got a prime & paint, so are ready to go. I’m still waiting on a second pair of CV joints so will get the right side fitted before the engine goes in & the other will have to be done the hard way afterwards.