05 db9 front brake flexi pipes

[mike-2txrc]

Just looking at oem prices and they are ridiculous.

Has anyone fitted hel stainless braided flex hoses for the db9 or fitted any other type that aren't 200 plus quid each?


Thanks

Mike

[darreni]

I can’t comment specifically on the Aston hoses, but I’ve used HEL brake lines and oil lines/ a fittings on my CSL and they have been perfect.

You can order direct from HEL too.

[8Tech]

No issues with aftermarket stainless lines but note the following....
Use lines that have a plastic coating over the braid because otherwise dirt particles get between the steel braiding and grind it away. To be TUV approved, this must be the case. Also, DB9 hoses must be fitted with an exact alignment, and there is even a genuine AM tool to ensure this is done to prevent stress.
I made a little temporary jig to set this alignment when I removed and refitted my calipers. Exact may be a bit harsh, but pretty damn close is essential.

[ian448]

8Tech , can you elaborate on the brake line fitting and the Jig , was intending to change one of my front lines thought it would be a straight swap out but it appears not

[Percy Penguin]

You could try these - https://www.astonspares.co.uk/products/db9-v8-all-...

They even come with the jig.

[bullet7]

The spares section of Astonowners.com has these hoses which come with the alignment brackets.

[8Tech]

ian448 said:

8Tech , can you elaborate on the brake line fitting and the Jig , was intending to change one of my front lines thought it would be a straight swap out but it appears not

[mike-2txrc]

Cheers guys.

I will have a look and speak to a few companies.

Cheers for the info. That alignment is just how they should be fitted. Same thing on aircraft I work on. Just get the clocking of the original before you remove it. Or I could just 3d scan it and 3d print a gauge.

Did the same on the 67 mustang and 70s muscle car.

I presume braided give yo better braking as they don't expand as much as just the am rubber ones?

Cheers

[8Tech]

mike-2txrc said:

Cheers guys.

I will have a look and speak to a few companies.

Cheers for the info. That alignment is just how they should be fitted. Same thing on aircraft I work on. Just get the clocking of the original before you remove it. Or I could just 3d scan it and 3d print a gauge.

Did the same on the 67 mustang and 70s muscle car.

I presume braided give yo better braking as they don't expand as much as just the am rubber ones?

Cheers

Theoretically, yes, they expand less but would only really be noticed with very heavy braking (higher than normal pressures) and against older rubber hoses. I very much doubt the vast majority of drivers would notice any difference, and suspect most installers who claim to feel a difference are more likely due to the fact they have changed the fluid and bled the system at the same time as installing them.
Not trying to detract from installing them as I would do so every time, but just my experienced observations. Probably done 35+ sets, 5 to 10 just for the "upgrade" and the rest for perished or cracked hoses or MOT failures.
I strongly recommend fitting ones with STAINLESS END FITTINGS, not just stainless braiding with rust prone end fittings.

Hope that helps,

8Tech.

[Wobbly]

One of the items that came up at my DB9 recent service was brake lines, and as said, cost of OEM parts is ridiculous.

I’ve used HEL lines on motorcycles in the past and have been very well manufactured and lasted well, unions and brackets are stainless, so should last a lot longer than steel originals.

It’s a job for the winter, but will most likely I will use HEL braided lines to replace the originals.