So an interesting day working on the GT. For along time i have wanted to have a close inspection on the induction system. Especially after the recent redirection of crankcase breather fumes and condensation crud. I wanted to now clean the whole system. To be fair as i slowly took apart the FMIC pipes and turbo pipe, it was apparent things were slightly better than i imagined.
Still traces of oil crud but it was not terrible. The old turbo hose was slightly oil misted at the crank case breather entry point, like i expected. But not half as bad i thought it would be.
Then the good news, my precious hybrid turbo impeller was spotless. happy days. Totally cleaned each and every induction FMIC hose, used silicone cleaning spray to leave a lovely sheen to the inner Silicone pipework.
Then the difficult bit removal of the factory airbox. Not funny.
It comes in two halves. connected at a dovetail hinge join. Hardly any space to remove it from below so ended up removing the maf to make it easier to manoeuvre the two halves eventually separating the hinge join and finding a hidden bolt location under the fuse box tray...Utter **** design. Infact the whole engine is so pernickety to work on.
So on removal of the airbox, i find a bloody great hole on the maf side of the box!!
Gulp. So i was getting unfiltered air into the maf intake section.
I have patched it up with Gaffer tape for now, but it needs sorting. And totally cleaned and inner polished both sides of the airbox internals. Proper OCD stuff here..
The maf seemed ok no real dirt build up etc.
Anyhow fitted Ned's new Turbo to maf hose fit like a wet seal in a wetsuit, so was well happy. Also due to the design will flow air much better than the ribbed original item.
I measure the space for the VTDA airbox and clearly it will fit but i will need a new turbo to maf hose..A lot shorter silicone hose at that.. Gona have to be a bespoke item. Or i just go for a nice K&N open filter. But i am not sure i want all the turbo chuffing and blowing noises. Too old for all that now will see..lol.
Tomorrow will have to take her out for a blast to check for leaks in the FMIC hoses, at least they are all lovely and clean internally now. Huge peace of mind.
Next on the list is to fit Joel's inlet manifold free flow intake elbow. Gets rid of the butterfly valve for much better flow. This needs looking into as the valve is pneumatically actuated, so i need to somehow block off the pipe?
A few other issues i have to chat to Alfa Sensei Ned about, but on the whole she is pretty healthy.