Thread: turbo fitted and running

Originally Posted by Bearman

I would recommend you hook up the water cooling - it keeps the cartride or barrel temp down and this will prolong the life of the turbo. It also virtually eliminated the chance of the oil vapourising in the barrel and causing bearings running dry and eventual failure. This is a possibility after a long drive when everything is hot (engine oil will reach 100 -115 degrees) and the oil doesn't cool down enough before you shut it down. The water cooling assists enormously at this crucial time. Have a look at the cooling setup on the 6bys. Easy enough to do and the thermostat cover with the turbo water fitting will fit straight onto your thermo housing. On the other side you can either acquire a 6by water pump (which has the water inlet fitting for the turbo) or modify your pump with a small nipple for the water tube. If you have a look at a 6by water pump you will see what I mean. My setup has both water cooling and an oil cooler (transmission type) in the oil feed line. Thats after it has been through the engine oil cooler. I still let it idle for a couple of mins after a long run and make sure the EGT's are below 200 before shutting it down. Mike Vine (the bloke in Brisbane who fitted mine reckons with the oil cooler and water cooling you can shut it down instanly after long hard driving) but I wouldnt. (Mine has done a lot of K's on 2 motors and is still in good condition so I guess it has paid off.)
You didnt say under what conditions you are reaching 600 degrees. This is ok for a long hard pull on a hill but you dont want to sustain this sort of temp for long. On the flat doing 100 your temps should be around 250-350, a little bit higher with a headwind or big load. My setup is 2 1/2 pipe all the way from turbo to end of exhaust pipe and it is important to have a flexible piece welded in so stresses are not put on the turbo when the motor flexes under load. 13-15 psi definitely increased the power noticeably from 10 psi but as said it is very important to watch those EGT's. Increase in boost usually requires an increase in fuel (lean fuel burns HOT). What did the motor came out of - it looks like a truck motor by the rocker cover. What age,how many K's etc, and did you fit the turbo pressure plate. Hope this helps. I get up to Townsville every so often, have to catch up one day......Brian

my egt temp is a bit higher than that I think it was around 400 at 100km I am pushing 33 inch by 12 inch tyres. the engine is out of a 85 county but I have put a turbo rocker cover on it. it has 340000k on it and yes it has a turbo pressure plate, would be good to catch up when you up here as you said.

Hey Thanks Lambie

What great pics.

They will come in handy when I get to fitting my turbo and thanks to Bears etc for the other info.

Does the rocker cover have any additional internal acoustic material available?

Pete

Originally Posted by lambrover

the egt probe is actually in the manifold on the flange joint, so it is before turbo. could you post a picture of your dump pipe. cheers and thanks for the concern

This is from the thread I posted on my turbo install.

Originally Posted by isuzurover

This is from the thread I posted on my turbo install.

that looks like a good dump did you buy or make it, how the hell did you get the exhaust to run through there.

Originally Posted by land864

Hey Thanks Lambie

What great pics.

They will come in handy when I get to fitting my turbo and thanks to Bears etc for the other info.

Does the rocker cover have any additional internal acoustic material available?

Pete

yes the rocker cover dose come with the acoustic part as well it was 240 dollars so not cheap but it tidys the look up as well.

Originally Posted by Bearman

I would recommend you hook up the water cooling - it keeps the cartride or barrel temp down and this will prolong the life of the turbo. It also virtually eliminated the chance of the oil vapourising in the barrel and causing bearings running dry and eventual failure. This is a possibility after a long drive when everything is hot (engine oil will reach 100 -115 degrees) and the oil doesn't cool down enough before you shut it down. The water cooling assists enormously at this crucial time. Have a look at the cooling setup on the 6bys. Easy enough to do and the thermostat cover with the turbo water fitting will fit straight onto your thermo housing. On the other side you can either acquire a 6by water pump (which has the water inlet fitting for the turbo) or modify your pump with a small nipple for the water tube. If you have a look at a 6by water pump you will see what I mean. My setup has both water cooling and an oil cooler (transmission type) in the oil feed line. Thats after it has been through the engine oil cooler. I still let it idle for a couple of mins after a long run and make sure the EGT's are below 200 before shutting it down. Mike Vine (the bloke in Brisbane who fitted mine reckons with the oil cooler and water cooling you can shut it down instanly after long hard driving) but I wouldnt. (Mine has done a lot of K's on 2 motors and is still in good condition so I guess it has paid off.)
You didnt say under what conditions you are reaching 600 degrees. This is ok for a long hard pull on a hill but you dont want to sustain this sort of temp for long. On the flat doing 100 your temps should be around 250-350, a little bit higher with a headwind or big load. My setup is 2 1/2 pipe all the way from turbo to end of exhaust pipe and it is important to have a flexible piece welded in so stresses are not put on the turbo when the motor flexes under load. 13-15 psi definitely increased the power noticeably from 10 psi but as said it is very important to watch those EGT's. Increase in boost usually requires an increase in fuel (lean fuel burns HOT). What did the motor came out of - it looks like a truck motor by the rocker cover. What age,how many K's etc, and did you fit the turbo pressure plate. Hope this helps. I get up to Townsville every so often, have to catch up one day......Brian

Water cooled jackets are usually a hangover from the same turbo core also being used on petrol engines. Provided you don't shut it down until EGT's are below 200C as you've mentioned, you'll have no issues.

Turbos designed soley for use on diesels don't have water cooled cores. My factory 4BD1T turbo (1986 vintage) didn't have water cooling, the T25 I'm currently using has a water jacket that's not connected (turbo from a petrol engine). It's running fine.

Originally Posted by lambrover

that looks like a good dump did you buy or make it, how the hell did you get the exhaust to run through there.

I got the flange lasercut to match a cast dump pipe which came with the turbo, then got an exhaust shop to make the dump pipe. It is a tight fit but it makes it through. I have the winged sump, so no room to go straight down.

Thanks Lamb

I have a trim that goes around the bottom of the cover.

Do you have something that also fits inside the cover?