TM 250 exhausts???

[GMC]

Hey Suzuki boffins.
I just had a call from a guy who reckons his 72 TM 250 has a different angle fitment for the exhaust on the barrel to the 74 model.
I had been under the impression that all the TM's were the same.

I think I jigged from a 74 model but it was so long ago now I can't remember.
He reckons 72 & 73 are the same and 74 and 75 are the same, but I could have sworn I had sold pipes to guys with 73 & 74 models
So can anyone inform me what year they changed the barrels please?

[TM BILL]

Pretty sure they changed in 74 Geoff

[oldfart]

Early had the exhaust port on about a 10 degree kick to the LHS , where as the later had a greater angle @ about 30 degrees.

[GMC]

Pretty sure they changed in 74 Geoff

Any seconders for this motion?

[Suzukal]

Yes, seconded ...... the 73 and 74 barrels have different angles on the exhaust port.

[GMC]

So then...
72 & 73 are the same
and
74 & 75 are the same??

[oldfart]

Correct

[TM BILL]

So then...
72 & 73 are the same
and
74 & 75 are the same??

I think 71 R 72 J and 73 K models are the same and 74 L and 75 M models are the same

[GMC]

Thanks guys.