Banjo bolt difference R33/R34? - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

ocd · 1st September 2008, 11:01 PM

Without going into the details of why, does anyone know if the turbocharger oil inlet banjo bolts are the same on R34 and R33 GTRs? R34's came with BB center section turbos if I'm not mistaken. My concern is the internal diameter of the bolt orifice.

Thanks!

n boost · 2nd September 2008, 12:33 AM

THEY ARE THE SAME MATE. I KNOW CAUSE ME AND MY MATE BOTH SWAPPED TURBOS OVER LAST WEEK AND I WAS GOING TO KEEP THE BANJO BOLTS OF HIS R34 AND PUT THEM IN WITH MY GT2860'S ON MY R33.
HE FITTED HKS TURBOS SO WE ORDERED HKS RESTRICTOR BOLTS(FEEKING £35 FOR PAIR!) TO FIT HIS BUT WHEN REMOVED THEY WERE BOTH IDENTICAL.
APPARENTLY U DONT NEED OIL RESTRICTORS WITH GT2860'S AND BOTH RB AND RK DONT FIT THEM AND THEY MUST HAVE FITTED PLENTY SETS SO DEFFO KNOW WHAT THERE ON ABOUT.

ocd · 2nd September 2008, 03:14 AM

Well, if you run a high volume/pressure oil pump (like me), then you must run restrictors. I didn't know this 'till after the turbos went in. I didn't even know HKS made these. No matter how many cars I build, it never fails, something is always overlooked

Thanks!

n boost · 2nd September 2008, 03:44 AM

Well u could use the hks bolts as they are the same fitment but have a restrictor fitted or on the cheap make your own by welding the end of banjo bolt, grinding down and drilling a 0.8 hole through the weld.....Job done lol!

ocd · 2nd September 2008, 03:18 PM

Yep. I actually made a restrictor out of a 6mm X 1.00 allen set screw (.889mm orifice drilled through it) and tapped the ID of the banjo bolt to those threads. Works great and I didn't risk buggering the threads of the banjo bolt with heat from welding. Thanks for your help.

James

pupsi · 3rd September 2008, 03:36 AM

Also in the process of having a restrictor fitted in the Turbo oil line. Defi gauge shows 8bar from cold start-up and settles down to 4bar when warm/hot, quite a high oil pressure, running a Jun oil pump. It was fine with the twins Garrett GT3071Rs as soon as I changed to a single Garrett T04z its started to burn oil through the Turbo. The Turbo's not faulty as it's brand new, well at least I hope it's not. We'll see how it goes after fitting the restrictor, finger's crossed, all should be well.

ocd · 3rd September 2008, 03:57 AM

OMG! 8bar at cold start! That JUN pump is a beast! I think the Tomei is 5bar at cold start. Oil burning throught the turbo is the exact problem I was having.

pupsi · 3rd September 2008, 11:53 PM

Quote:

Originally Posted by ocd

OMG! 8bar at cold start! That JUN pump is a beast! I think the Tomei is 5bar at cold start. Oil burning throught the turbo is the exact problem I was having.

So is your problem cured??????

ocd · 4th September 2008, 03:05 AM

Quote:

Originally Posted by pupsi

So is your problem cured??????

I'll let you know tomorrow

pupsi · 4th September 2008, 05:49 PM

By the way what turbo are you running??

ocd · 5th September 2008, 10:40 PM

Tomei 2.8 stroker w/ Tomei 7660 turbos. I haven't started the car back yet. I'll get the rest of the intake and such together this weekend. It should be fine now with the restrictors in place.

pupsi · 6th September 2008, 04:24 AM

Let us know the outcome. Did the restrictors work and cure the problem.....

1st September 2008, 11:01 PM	#1 (permalink)
ocd GTR Register Member Join Date: Jul 2006 Posts: 21	Banjo bolt difference R33/R34? Without going into the details of why, does anyone know if the turbocharger oil inlet banjo bolts are the same on R34 and R33 GTRs? R34's came with BB center section turbos if I'm not mistaken. My concern is the internal diameter of the bolt orifice. Thanks!

2nd September 2008, 03:14 AM	#3 (permalink)
ocd GTR Register Member Join Date: Jul 2006 Posts: 21	Well, if you run a high volume/pressure oil pump (like me), then you must run restrictors. I didn't know this 'till after the turbos went in. I didn't even know HKS made these. No matter how many cars I build, it never fails, something is always overlooked Thanks! Last edited by ocd; 2nd September 2008 at 03:17 AM.

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2nd September 2008, 12:33 AM	#2 (permalink)
n boost GTR Register Member Join Date: Jun 2008 Location: brmingham Posts: 396	THEY ARE THE SAME MATE. I KNOW CAUSE ME AND MY MATE BOTH SWAPPED TURBOS OVER LAST WEEK AND I WAS GOING TO KEEP THE BANJO BOLTS OF HIS R34 AND PUT THEM IN WITH MY GT2860'S ON MY R33. HE FITTED HKS TURBOS SO WE ORDERED HKS RESTRICTOR BOLTS(FEEKING £35 FOR PAIR!) TO FIT HIS BUT WHEN REMOVED THEY WERE BOTH IDENTICAL. APPARENTLY U DONT NEED OIL RESTRICTORS WITH GT2860'S AND BOTH RB AND RK DONT FIT THEM AND THEY MUST HAVE FITTED PLENTY SETS SO DEFFO KNOW WHAT THERE ON ABOUT.

2nd September 2008, 03:44 AM	#4 (permalink)
n boost GTR Register Member Join Date: Jun 2008 Location: brmingham Posts: 396	Well u could use the hks bolts as they are the same fitment but have a restrictor fitted or on the cheap make your own by welding the end of banjo bolt, grinding down and drilling a 0.8 hole through the weld.....Job done lol!

2nd September 2008, 03:18 PM	#5 (permalink)
ocd GTR Register Member Join Date: Jul 2006 Posts: 21	Yep. I actually made a restrictor out of a 6mm X 1.00 allen set screw (.889mm orifice drilled through it) and tapped the ID of the banjo bolt to those threads. Works great and I didn't risk buggering the threads of the banjo bolt with heat from welding. Thanks for your help. James

3rd September 2008, 03:36 AM	#6 (permalink)
pupsi GTROC Member Join Date: Aug 2006 Location: West London Posts: 1,912	Also in the process of having a restrictor fitted in the Turbo oil line. Defi gauge shows 8bar from cold start-up and settles down to 4bar when warm/hot, quite a high oil pressure, running a Jun oil pump. It was fine with the twins Garrett GT3071Rs as soon as I changed to a single Garrett T04z its started to burn oil through the Turbo. The Turbo's not faulty as it's brand new, well at least I hope it's not. We'll see how it goes after fitting the restrictor, finger's crossed, all should be well.

3rd September 2008, 03:57 AM	#7 (permalink)
ocd GTR Register Member Join Date: Jul 2006 Posts: 21	OMG! 8bar at cold start! That JUN pump is a beast! I think the Tomei is 5bar at cold start. Oil burning throught the turbo is the exact problem I was having.

4th September 2008, 05:49 PM	#10 (permalink)
pupsi GTROC Member Join Date: Aug 2006 Location: West London Posts: 1,912	By the way what turbo are you running??

5th September 2008, 10:40 PM	#11 (permalink)
ocd GTR Register Member Join Date: Jul 2006 Posts: 21	Tomei 2.8 stroker w/ Tomei 7660 turbos. I haven't started the car back yet. I'll get the rest of the intake and such together this weekend. It should be fine now with the restrictors in place.

6th September 2008, 04:24 AM	#12 (permalink)
pupsi GTROC Member Join Date: Aug 2006 Location: West London Posts: 1,912	Let us know the outcome. Did the restrictors work and cure the problem.....