DB9 rear exhaust pipe outer diameter

[David Ramsbotham]

I know the answer to this is “go measure your car” but don't have access at the moment and wondered if anyone can tell me this off the top of their head so to speak?
Thanks.

[paulrog1]

If your talking about the 3 straight clamps you need these-

https://www.ebay.co.uk/itm/Universal-Exhaust-Clamp...

So the answer is 63.5mm

The 4 elliptical clamps can be sourced from scuderia parts for about £18 each, i couldnt find a cheaper equivalent part.

[David Ramsbotham]

According to Scuderia’s site the clamps in the middle of the system are the same as those holding the rear pipe . I have ordered one from them to see what it is like.

When I did my DB7 I used some Mikalor stainless steel clamps ( sold on eBay) which were very reasonable and seemed good quality. Hoping I might be able to use similar on the DB9 albeit a little bigger.

Thanks for the info, Paul.

[paulrog1]

When I replaced all my clamps I found that the 4 Spherical ones are listed on Scuderia so that's ok (the 2 just downstream from the secondary cats and the 2 short pipes from the rear silencer) but the 3 straight ones are not, I think its because the 3 straight clamps have a spot weld onto the exhaust pipes so only come with new pipes?

Scuderia has an error in the exhaust section and the middle clamps (the clamps either side of the autobox) and the forward clamp next to the short piece are actually the straight type, not spherical.

I just ground off the spot weld and then found some suitable ones on the web, the ebay link above.

[David Ramsbotham]

Thanks again, that makes more sense. Have to admit that I thought it odd that part number was the same for all the clamps!
So need to order 3 more clamps from Scuderia to cater for small middle section pipes and then sort out a clamp for the rear section to replace the one that has cracked ( next to auto trans ).

Brilliant top class info.