Thread: Yet more turbo questions!

Originally Posted by Bush65

On my 4BD1T engine that is not a cover plate, but a bearing for the pump shaft.

Haven't had the one off mine but assume it is the same, though some I have seen appear to have a depression cast into the top face.

Originally Posted by jackz

Haven't had the one off mine but assume it is the same, though some I have seen appear to have a depression cast into the top face.

Some of those plates are cast, others just flat plates. My engine (85 JDM truck 4BD1T) has the flat plate over the oil pump drive.

Thats mine (early Stage1 engine) in the photo above, its cast and is the support for the pump shaft. Somewhere around here there is a photo from the underside showing the support, and where the hole comes through.

Something to note in that photo (if I haven't already mentioned it previously) is the reason I used a separate 45deg fitting and tail instead of a one piece 45deg with barbed tail was that the single piece items only had very small holes through them. I'm sure would have caused a restriction issue.
Using 2 separate fittings allowed me to easily get a larger diameter through the whole fitting.

Steve

FYI Underside of my oil pump cover with 18mm spanner for reference. I decided to go elsewhere for oil return.

In my turbo thread is a drilled underside pic. My BorgWarner turbo uses an AN10 fitting which worked ok in the pump shaft lid thing. I'd repost the pic but tapatalk is annoying.

collected all the mandrel bends for the exhaust today, then spent a few hours mucking around with the new tig. Made the drain for the turbo and provent. First time on the TIG for about 25 years!!!! I used to think it was easy..
drain_rs.jpgdrain_fitted_rs.jpg

Finished the installation today, took it for a quick test run, unfortunately cut short due to an oil leak from the vacuum pump oil feed. the engine sounds a little quieter, without so much of the normal clatter at idle. There's just the slightest hint of a whistle from the pipe at idle. EGT sits around 118 at idle.
There doesn't seem to be too much difference to drive it however I did notice that it no longer pumps out a healthy cloud of black goodness whenever you're on the throttle. Which leads me to my next question; is the fuel adjustment the screw with the lockwire on the side of the pump that bears against a little lever/cam type thingy? And if so, do I screw it in or out, and by how much?

Follow what your egt gauge says.