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Old 09-15-2020, 10:53 AM
Thors Twins Thors Twins is offline
Join Date: Jun 2019
Location: New Milford CT
Posts: 5
Thors Twins is on a distinguished road
Originally Posted by Effduration View Post
Doing this project now. CN90 DIY is excellent...

I am cutting out rusted sections and replacing with Ni-Copp tubing.

I need to make good bubble flares on both Ni-Copp and the steel lines still in X5.

I tried a new, in-line bubble flaring tool - Cal-Van part# 155...for about $30...good idea, poor execution. It is small and is ideal for in-line work, but unfortunately it is not robust enough for making bubble flares in (non-stainless) steel. It won't grip the tubing with enough clamping force to withstand the bubble formation. I am returning it.

I ended up borrowing a mid-level MasterCool bubble flaring tool.

Haven't tested any connections yet..still working on it.
Also will use Cu-Ni tube stock, borrowing tools from a friend. For the lines that are still in good condition, i will apply a light coating of grease to help preserve them.

I was appalled by all the road crap that came out when the plastic cover was removed. You're located not far from me (CT) so you probably had the same.
'06 X5 4.8iS
'89 525i - sold
'91 M5 - sold
'12 Lexus IS 250 awd
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