1) can i use two turbo oil feeds from the original point on the rar of the offside head...or will the pressure to each turbo be too low?

2) if the oil return pipes from the turbos are below the level of the sump (not below oil surface level), and hence the oil having to travel uphill along the return pipes and into the sump, would this cause too much restriction and therefore slow and heat up the oil passing through the turbos?

ok, i cheated, 3 questions

3) what about the maf sensor? could i just use the one, and tee off the induction pipe to each turbo? (i know fuelling would be **** up initially, but can adjust it.

cheers
ian

p.s. any other pointers you think of are welcome

 

Using a single feed for both should work OK
Any restriction in the return line is bad. It can cause too much oil to be retained in the turbo, which can cause an increase in oil pressure which would cause the oil seals to fail/leak. Oil returns should be free.
Suppose as long as the AFM sees all the air entering the engine, then it should work fine.

I dont really see the point of using 2 turbos on such a small engine though, as I have driven a couple of Legacy TT's, and they did not impress at all.

 

yeah the returns did concern me due to the obvious
will have to think on that one.

i dont like the tt's either.

my point on a 2.0 litre engine would be to get a high flow of air (2 tdo5's) at lower pressure. therefore, more power at lower temps? the kind of effect of a massive turbo feeding loads of air, but without the lag.

 

without the lag? With only half the gas driving them?

2 td04s might be okay, if you made the exhaust headers dead short, someone is planning just such a conversion.

paul

 

oh yeah forgot about half the gas issue, god im going to bed in a min

2 tdo4's..hmmm, would have great midrange then eh. that person, you mean andy?

 

tell you what, sack the fact i mentioned it. im going to revert to my original plan and fit a bigger turbo.
not bothered about lag anyhow.

g'night all

 

Get the new twin scroll from the JDM STi, and the 4 to 2 headers (if you can make'em fit of course ).