Will 1cm each side of a new flexi section be enough to grip?

[RR76]

I cut out the flexi section of my exhaust and am going to order a new one, the one with clamps. Them come in 200mm, 250mm, 300mm length. The 200mm will give me about 1cm overlap on the manifold side and 1cm on the middle section side to clamp onto.

This seems like cutting it fine but what do you think is this enough to clamp / secure the flexi into the other parts of the exhaust?

[GreenV8S]

RR76 said:

do you think is this enough to clamp / secure the flexi into the other parts of the exhaust?

I wouldn't expect to get any useful clamping on a 1cm section of flexy. You need to know the width of the clamp and some allowance for the flexy to extend past the clamp to stop it simple sliding off, and I don't see 1cm being enough for that.

[normalbloke]

If you clamp it with weld, all will be fine….

[paintman]

RR76 said:

This seems like cutting it fine but what do you think is this enough to clamp / secure the flexi into the other parts of the exhaust?

No.
Unless you follow normalbloke's advice.

[E-bmw]

RR76 said:

The 200mm will give me about 1cm overlap on the manifold side and 1cm on the middle section side to clamp onto.

As others have said 1cm isn't enough.

Is there any movement in the rest of the exhaust that could give you another 2cm minimum?

If not either weld it on or get a longer one.