Timing Cover Triumph Tiger 100P 1972 Cracked

[Serge1952]

I have a nasty crack in my timing cover where the oil pressure switch is located. I had the switch replaced by a new one and I couldn't get it tight. so I saw that the cover was cracked. Now I tried to find a timing cover on the internet but it looks like there is no availability. I wonder if somebody can help my out to find the part.

70-9250​

 

[Rudie]

I have a nasty crack in my timing cover where the oil pressure switch is located.
I tried to find a timing cover on the internet but it looks like there is no availability.

You will probably experience great difficulty sourcing another timing cover, at least one that does not require work; the problem you have experienced has been common for over fifteen years to my knowledge, it was almost certainly caused by the wrong oil pressure switch being fitted.

The crack in your images is much larger than usual; have you considered removing the piece completely and having it welded back in place? A temporary plug with a 1/8"NPS (National Pipe Straight) thread will probably be required to ensure the internal threads are aligned. The thread is an American pipe thread, it could be easier to find a competent machinist able to screw-cut 27 tpi (threads per inch) on the temporary plug than to obtain a 1/8"NPS die.

I had the switch replaced by a new one and I couldn't get it tight.

If you ordered the switch by the part number in the 72 T100 parts book - D2133 (60-2133) - the timing cover damage was done either because you were supplied a switch with a 1/8"NPT (National Pipe Tapered) thread or because you were supplied with an oversize switch.

Also, unfortunately, you exacerbated the damage by using a spanner to tighten the switch, they should be fitted using thumb and forefinger only, the correct NPS thread switch (60-3719) will (should) fit all the way to its sealing washer against the timing cover; if it does not, you can unscrew it and investigate without any damage the timing cover ...

 

[Serge1952]

Yes I realise now tht I had the wrong thread; Thanks for the information