can you tell me if the oil inlets had pressure restrictors in them, or whether they need them fitted to the lines???
PM THZX cause he is the only one who has fitted his yet. I have no idea if the turbos have restrictors or not
well, I ask in order to make the point known as well... just in case people bought them and did not know that ball bearing turbos do not cope well with high oil pressures. It should be fairly obvious if the oil intake on the turbo has a restrictor or not It's just that I have been told some have them and some don't. I'm trying to get everything ready to go for when my turbos arrive.
Re: well, I ask in order to make the point known as well... Just thinking about your question. You reuse the existing oil pipes. Even the drain if possible. So basically if there are none there before its likely they are not there now. Is the a Garrett tech note about this Kyne? Or was it mentioned on TT.net? If you can tell me what I am looking for on the turbo as far as a restrictor is I will have a look for you.
well, on the stock turbos the oil intake is about a 6mm hole and I'm told that the restricted size is only very small (i'm thinking around 2mm). I just had a quick look on Garrett's site and couldn't find any mention of it. I was told by the guy at MTQ that BB turbos don't like anything over 50psi.
I used stock oil feed lines.. Which are a direct fit, I haven't seen another conversion that has used a restrictor although it seems like a pretty good idea. Another bit of info CLICK I converted to a BB turbo on my 180SX about 3 years ago using the stock oil feed line and have not had a problem , so I don't consider it a life or death situation. Tony
I'd assume no because in some systems they use inline oil filters before going to the turbo CHRA oil inlet. Some of these filters already contain the restrictor in them for converting from Bushing Type to BB Type turbos. You need a 0.8mm restrictor for use with Ball Bearing cartridges. The idle oil pressure at the turbo should be 9psi and oil pressure at 5000rpm should be 30psi. The .8mm restrictor will reduce an engine with 25psi oil pressure at idle, 75psi oil pressure at 5000rpm to these recommended pressures.
Re: I'd assume no because in some systems they use inline oil filters before If you could measure the turbo line pressure you could give the inlet oil line a quick squeeze with pliers till the pressure is right. Its a solid line I think :wacko:
