turbo oil return,

[crunchy]

before i start putting holes in anything were abouts is everyone doing this, the sump or block. better still if annyones got a pic that would be great.

[niall]

here is a pic of a stock 745i turbo engine if its any help to your conversion

[niall]

this pic shows the oil pipes.

[Craig]

I put mine in the oil pan. If I screwed it up, it's easier to replace than the block.

Unfortunately it leaks somewhat right now, I need to get some RTV on it or something. It's not massive, but it's enough that I don't want to let it go for much longer.

[Jose]

On the E28 turbo conversion I made last week, I used a powersteering pump for the oil cooling for the turbo.I hooked it up to the engine instead of the aircom pump. To be sure the pressure was high enough, I had the pully replaced by a very small one(70mm) so it would pump a lot faster. I used a dry sump tank of 2 litres and a 19 row oilcooler to complete it all up.Now the turbo has it's own "dry sump"coolin/lubrication system. I use 0/w30 castrol oil for the lubrication. For now this systems is working and it should work a lot better than oil from the engine, as it has more presure and better cooiling. Next week I will install a temp sensor for the out-ingoing oil from/to the turbo.
Ain't it fun turbo-ing?!

[Craig]

Turbos don't really need all that much oil pressure to function. In fact, too much can cause some issues with the bearings. I like your idea though, but wonder if there is enough thermal mass in only 2 liters of oil. It will be interesting to see your temp numbers.

[Jose]

Craig,

That's just what I'm wondering about too. The temp nr's will give the final conclusion , but if it's not enough oil, a new canister is not the biggest job to replace. As for the bearing, the Gt38 uses ballbearings so they are almost"unbreakable "....I'll try to keep you posted.

[Craig]

Yeah, let me know. I like the idea.

[Jon K]

Yeah, let me know. I like the idea.

I want to make a seperate oil system for the supercharger i am planning to install. Some kits (like AA's) don't have a fluid pump. Does a supercharger create pressure or vacuum in its oil system?

[crunchy]

sorry for the late reply, another way for a oil feed and scavange pump is to use a pump of a L series nissan and make a small pulley and mounting bracket. their cheap and external adjustment for presure. since im doing a right hand drive car im going to make a pattern and cast an exhaust manifold to take a t3 style flange which allows for a pick off garrett or kkk and ihi turbos.