I've got myself an up-pipe & exhaust manifold sitting on the floor waiting to be fitted, & have been poking about in its tubes :rolleyes:. There's bits - in both of them - of splatters of welding (I think it is anyway) & I'm wondering if I should worry about it. I'm sure with a couple of fingers remaining at the end I could get rid of it, but is it worth it? If it came off I'm thinking of the hideous things it could do to the turbo :eek: although, on the good side, maybe I'd then have to get a better turbo...

Doubt that it would be an issue, if Subaru thought it necessary they would have ensured that the parts are 'cleaned' prior to fitting them.

But...if I were building an engine I would clear out the pipework.

Good luck, MD.

I think I'll have a scrape about & see what I can do! Probably remove parts of finger & little more... :D