Newtronic Electronic Ignition

[irco]

My recently purchased TR7 V8 has Newtronic Electronic Ignition fitted. Anybody out there fitted the same unit & still have the original installation instructions/manual. If so a scanned copy would be much appreciated.
Thanks,
Ian.

[CamGTS]

does this help http://www.triumphspitfire.com/images/p ... Page_2.pdf
Used to be called Piranha so an internet search should find it

[irco]

Thanks for that, much appreciated. Gives me a better idea of what's supposed to be connected to where.

[irco]

A further question for any body able to help. Is the cover of the Newtronic Module removable? Looks like there are a couple of tight fitting push in blanking plugs which may or may not be able to be prised out to uncover fixing screws. See photo. ( Not my unit but a photo copied from the interweb for reference purposes) I've tried poking with a sharp implement but to no avail. Don't want to force the issue & break something.

[Beans]

Why do you want to open it?

As for the wiring;
White wire goes to ignition switch;
Yellow to coil terminal that connects to distributor (remove wire between coil and dizzy);
Blue is earth wire.

[irco]

Thanks for answer.
Reason for wanting to remove cover is I assume the unit is screwed to the bulkhead & I may want to remove it at some point, to reposition it or clean/paint panel behind it. Not an urgent requirement but I like to be prepared. There are no external fixing screws visible.

[Beans]

Mine was fitted many moons ago, and came with a double sided adhesive foam tape to the back of the unit.

[irco]

Ah, ok. Thanks for the reply.

[dursleyman]

Early ones were screwed on with a couple of self tappers but all the later ones use the double sided tape.
I have the fitting and testing instructions if you need them:-

https://drive.google.com/file/d/1j21gq9 ... sp=sharing
https://drive.google.com/file/d/1MxhIeW ... sp=sharing

[irco]

Thanks for that, much appreciated.
Ian.

[Mals1960]

Hi Russ,

Do you still have the test instructions please? I think that the original link has expired.

Regards

Alan

[dursleyman]

Reloaded them to Photobucket, hope its what you need, message me if you want more

[Howard_B]

If you dismantle the unit you will need to replace thermal paste between the power transistor and the metal heat sink. I got mine from RS Components - 1805306 Silicone grease, 1.4 W/m K, 20g which cost about 10 quid inc postage

[Howard_B]

The Pirana/Newtronics units can suffer from bad solder connections (aka dry joints) which can easily be sorted with a few minutes soldering. This turned out to be the problem with mine and I have had reports of three other units suffering form the same issue.

Procedure is as follows:-

1) Remove PCB from black plastic cover

2) Re-solder all the soldered connections with a small soldering iron & suitable solder (with flux)

3) When finished, spray PCB with clear varnish to protect components

4) Reassemble unit applying thermal paste to the metal cased power transistor.

[dursleyman]

I have got a few spares of those if anyone is stuck