707160-5005S New Genuine Ball Bearing Turbo for Nissan Skyline [707160-5005S] - £636.84 : Turbo Dynamics, Turbochargers & Performance ProductsFor the GT2860 range of turbo's are oil restrictors needed? Speaking to Garrett they already come built in.
Not quite, what it actually says is:707160-5005S New Genuine Ball Bearing Turbo for Nissan Skyline [707160-5005S] - £636.84 : Turbo Dynamics, Turbochargers & Performance Products
Go on this link..
You read that after the word "warning" below, it says that you must also purchase a restrictor if your oil pressure... etc. etc. (it is a secondary restrictor)
:thumbsup:
40-45psi are about 3bar...stock oil pump at 8000rpm works at about 4bar...so you need the secondary restrictor!Not quite, what it actually says is:
WARNING ; On some applications a secondary 0.040 oil feed restrictor may be required. If the oil pressure exceeds 40 to 45 psi at maximum engine speed then it is recommend to fit the secondary restrictor to prevent oil being forced past the pressure differential oil seals and the turbo being incorrectly diagnosed as faulty.
That says to me they come with oil restrictors, but you may need an extra restriction if you have a mahoosive oil pump.
For example if you by the hks gt-ss kit from rhdjapan, it comes with banjo bolts includedNot quite, what it actually says is:
WARNING ; On some applications a secondary 0.040 oil feed restrictor may be required. If the oil pressure exceeds 40 to 45 psi at maximum engine speed then it is recommend to fit the secondary restrictor to prevent oil being forced past the pressure differential oil seals and the turbo being incorrectly diagnosed as faulty.
That says to me they come with oil restrictors, but you may need an extra restriction if you have a mahoosive oil pump. - Edit: wait a minute 45psi is only like 3 bar - even the standard pump makes that.
Yes, in fact I have GT-SS on mine and they do indeed come with the banjo bolts with restrictors fitted. But these aren't "secondary" restrictors strictly speaking as there aren't any other restrictors in the system.For example if you by the hks gt-ss kit from rhdjapan, it comes with banjo bolts included
lol, well it would make a mess in the engine bay if you didn't use any banjo boltsIn short we can say that FRRACER need banjo bolts! :chuckle:
"WARNING ***8211; On some applications a secondary 0.040***8221; oil feed restrictor may be required. If the oil pressure exceeds 40 to 45 psi at maximum engine speed then it is recommend to fit the secondary restrictor to prevent oil being forced past the pressure differential oil seals and the turbo being incorrectly diagnosed as faulty."lol, well it would make a mess in the engine bay if you didn't use any banjo bolts
The question is a)do the turbos in question come with banjo bolts
b)do those bolts have restrictors already
When I was talking to CR Turbos about this I was given to understand that BB turbo's that are advertised as a "bolt on" fit for the rb26 (-7s or -9s or standard R34 BBs) should come with banjo bolts fitted with suitable restrictors for standard RB26 oil pressures because they would blow oil without them. If you run very high oil pressure this may not be enough and they will still blow oil, then you can fit a smaller restrictor.
I agreeMate, get those HKS restrictors as you'll need them when you want to keep your tubs running for a while :thumbsup:
BTW, BB tubs just need a slight oil mist to lube the bearings, not more
HTH
Leo
Thank you LeoMate, get those HKS restrictors as you'll need them when you want to keep your tubs running for a while :thumbsup:
BTW, BB tubs just need a slight oil mist to lube the bearings, not more
HTH
Leo
:thumbsup:Found this..
HKS Oil Restrictor Bolt (GT series, GTSS, GTRS. 2835, 3037, etc) - PartBox Performance and Tuning
Is that the right one?