oil and turbo hose sizes?

[chris_bramley]

My turbos both kick in fine, but I'm getting, ooh, .5 bar dropping to .4 with both? Most odd. The power's there but it just doesn't come in fully.

 

After months of getting frustrated, I have given up and I am replacing ALL hoses I can reach with silicon and clamps,and there's already a marked improvement - the old hoses had been there a long time and put on and off too much, hairline holes all over.

 

I'm nearing completion on this, but I want to make sure I've covered all the bits, so I'm looking to replace the two accordioned high pressure hoses that attach between the twin turbos, and the oil hose the attached from the bottom of the block to the underside of the first turbo (It's crap, kinked and needs something better).

 

Can anyone tell me what the best replacement for the accordioned pressure pipes is (I've been told a turbo rated silicion with nomex will last much longer and take the heat and pressure fine), what size I need for the bore, and what size/length/make/blah I need for that turbo oil hose?

 

I am also looking to replace the short hose at the top and back that goes from the second turbo area to the head, just rear of the vacuum tubing array, but I can't get the bloody thing off to measure it and if I do it might crumble. If anyone knows that one's bore size as well I'd be grateful

[chris_bramley]

Right - a rough eye estimation of these pipes looks likes it's 67-70mm or so.

 

Here's a pic of the rubber bit I mean:

 

 

there's two of these and a third one down behind them roughly in between them next to the head. Can anyone confirm bore sizes?

 

Oh, and don't worry about the turbo hose bore size on the front turbo people. Turns out whoever had the car before me (whichever owner) seems to have, um, converted the steel oil feed pipe. I'm sure that isn't right.

[chris_bramley]

Bugger. ended up taking the intake stuff apart anyway so measured it myself - was trying to do stuff without resorting to that. Hey ho.

 

For anyone's future information, the two rubber pieces (one circled above) fit on pipes with a bore size of 52mm and are 10cm long; the smaller one behind these two below the vacuum piping next to the head is 42mm bore and 12 cm long. Nearest nomex-strengthened solicon turbo hose I could find was 51mm and 41mm respectively - not too pricey either.