I have just fitted my new T38 rb turbo from cr turbos and have a couple of questions. Firstlly do these tend to smoke a bit on overun, it was my old t34.63 made into the t38 and it never smoked last week with that on.
Secondly, I have a turbo hanger from autospecialists and would like to know how to install it without it rattling/buzzing on the rose joints. I think it is a poor design as surely it would be better with a turn buckle with opposite threads so you can tighten it when bloted up, as at the moment it only has half a turn on the rose joint? any ideas? Thanks

 

Mine doesn't smoke at all mate,something wrong there.

 

Hope it isn't the turbo as it wasn't cheap, it's not the engine as it was fully rebuilt 2,000 miles ago form top to bottom, I havn't driven it yet and saying that I thought it was starting to clear a bit. I will give it a good run in morning and see how it is then. Any ideas on the hanger, the instructions said fit when hot but you still only have half a turn either way otherwise the top bolt goes in cross threaded.

 

What engine oil you using,i assume you did an oil change when fitting new turbo

cheeRS stu

 

Oil and filter was changed and I am using 5w40 Platinum oil which is castrol, we buy it in 205L drums at work and it's been on this since the rebuild. Just checked the oil level before I drive it to work and it is a little high on the dipstick, well it was a rush job after work last night! I will drain some out this morning and get it on tohe level this could be the problem. As for the hanger I have noticed the rose joint neaest the turbo is very close and only has to twist 2mm and is then touching the machined washers that sit in the vracket on the turbo. so I will try and space this out so when it twists it won't touch the washers.

 

Hi, I presume you primed the turbo?

 

Does your turbo have the flow restrictor fitted to the oil inlet ?

 

This will deffo help to stop it smoking , they normally come with 2 of these one each side of the oil feed line. Sometime if you have fitted a high flow oil hose ( larger bore ) this can be a problem to ! Hope this helps.

 

I primed the turbo before connecting the hose, then turned it over with injectors disconected for 30 secounds or so for good measure. As for the resticter, not sure, the turbo only came back with a new union/adapter which has a hole straight through it, so guessing it's not a resticter, this was a new union supplied not the one i sent it away with. The car does have a high pressure oil pump, but this does not explain why it never smoked prior to fitting the t38. Colud it be a faulty seal in the turbo?

 

After doing some research it turns out the ball bearing core does require a flow restricor and this did not come with the turbo, I will phone CR turbos monday and get one sent out. Will driving it until i fit the restrictor damage the turbo at all, or just continue to smoke a bit?

 

I would try not to drive the car if you can as the extra oil can damage the seals in the turbo , thats why you have the restrictor and the RB core does not require the same amount of oil as a normal core.

 

Ok I will wait until I fit the restrictor, cheers.

 

Is it smoking from the turbo or exhaust tailpipe?

 

Don't forget you will need a remap as well

Steve

 

It is smoking from the tail pipe, as for the remap i've got an msd custom chip which was for the T34.63, 7:2:1, ABO7 , 55lb siemens etc i also have an afr gauge and was told as long as the reading is in the low 11s then all was ok? tbh with the base co set as per instructions the old turbo on full boost alawys read between low 10s and 11 so guess it was mapped to run a bit rich anyway?

 

11.5 on full chat full boost
is your afr gauge accurate first of all

 

It's an innovate MTX-L only about 6 months old so should be accurate