BGM V4 Sport exhaust

[Revvers]

Hello all. I’ve just bought the above exhaust. My engine casing is from 1962 and doesn’t have the screw hole on the bottom. I’ve watched videos and read that because of the muffler position, it needs to be attached to the bottom fixing that I don’t have! Will I get away with it, or is it too risky?? Thanks

[hullygully]

I've got one bud on my '63 TV175 casing & it aint a prob

[Warkton Tornado No.1]

With respect, the question you ask needs analysing

Innocenti added the M8 hole on the underside of the block as a means of stopping exhausts falling off in the early 60's. In my experience, any solid mounted exhaust (no means of allowing the exhaust to resonate, as is ideal ) needs all the help it can get.

You might get away with it, but, if it does fail, don't expect any sympathy from the manufacturer. You will have voided any warranty.

For the work entailed, draining the fuel & laying the bike down on some cushions/soft furnishings etc, drilling & tapping an M8 hole is relatively simple & achieves peace of mind - to an extent......

Personally, I would even tab washer/lock wire the head of any fastener in place & suspect many other seasoned Lambretta owners would do the same.....

[Revvers]

I’ve decided to send it back. I’ve had no issues with clubman exhausts and I’ve had my old girl for 20 years. I’m not technically proficient to mess around with casings so I’ve decided to stick with my clubman. Thank you guys