Does Your Skyline Shuffle? - Page 5 - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

R32 Combat · 6th April 2006, 02:54 PM

After looking at Mooks post about your 1st post, mine was about turbo shuffle. How bizarre...

GeorgeBush · 6th April 2006, 03:02 PM

Quote:

Originally Posted by Mookistar

this was my error, thats NOT shuffle, merely the sound of the compressed air passing back through the turbo's and out the air filters. The sound you hear is the air being "cut up"

shuffle apparently is a feeling of restriction temporarily felt as the revs rise as i understand it

mook

That's a relief

paul cawson · 30th August 2006, 10:38 AM

Would it make a difference if one turbo was more efficient than the other, the outlets both feed into the same pipe that feeds all Six cylinders?

whoflungdung · 30th August 2006, 11:39 AM

Quote:

Originally Posted by paul cawson

Would it make a difference if one turbo was more efficient than the other, the outlets both feed into the same pipe that feeds all Six cylinders?

Yes!

R32 Combat · 30th August 2006, 05:22 PM

Abbey M/S · 30th August 2006, 09:19 PM

Quote:

Would it make a difference if one turbo was more efficient than the other, the outlets both feed into the same pipe that feeds all Six cylinders?

YEP..... the efficent one will spool 1st thus slowing down the other one......voila the "shuffles" but only if you are using part throttle , full throttle and they will both spool up in the end

whoflungdung · 30th August 2006, 09:26 PM

Quote:

Originally Posted by Abbey M/S

YEP..... the efficent one will spool 1st thus slowing down the other one......voila the "shuffles" but only if you are using part throttle , full throttle and they will both spool up in the end

Errr Mr Shuffles here......

Sometimes I have to back off before the car will accelerate, as it will not pull straight through the shuffle sometimes on full throttle

Most annoying though

Well thats what I remember from over 4 months ago....

Never get yer mate to do a paint job for you

Stan · 21st September 2006, 01:07 PM

If my throttle hits max boost (whatever the setting), and I hold it there, then the car seems to jerk slightly, and there a strange whirring noise (usually three times) - also the turbo boost dial fluctuates - is this the shuffles?
I've not had the car long & I know the previous owner fitted new AFMs & a boost controller just before I got it. Could there be a problem with the set up ?

paul cawson · 21st October 2006, 07:46 PM

I managed to cure my car tonight of its shuffle sure will miss it

GeorgeBush · 21st October 2006, 08:53 PM

How'd you do that?

drive · 22nd October 2006, 09:26 AM

mate, i know all about the funky shuffle!!!! infact i can honestly say there probably hasnt been anyone out there who has experienced any more shuffle than i had goin on!!!!!!!
my problem was lack of knowlage basically.
i thought i was getting i right bargain when i bought the twin gtrs turbo kit brand new off someone on this website for £1900. it was only after i had paid for them i realised that these were not best suited to my 2.6lt engine and infact hks said not to use them unless you had the 2.8lt or the 3.0lt stroker kit.
mark at abbey told me i would get a shuffle problem, but me being me i just thought oh well it cant be that bad......... big mistache!!!!!!!!!

this was an absolute f$$king nightmare!!!!! it was well noisey, very very annoying and whats more a complete headache on fuel consumption, infact i was doing around 100miles on a full tank (£55)
i couldnt handle driving the car around like this for long and have recently changed these turbos for smaller garrett ones.
im still running my new engine in at the moment and am having a re-map on weds.
i am expecting and also hoping for little or no shuffle whatsoever.
fingers crossed!!!!!!!!!!!!!!!!!!!!!

paul cawson · 22nd October 2006, 12:16 PM

Quote:

Originally Posted by drive

mate, i know all about the funky shuffle!!!! infact i can honestly say there probably hasnt been anyone out there who has experienced any more shuffle than i had goin on!!!!!!!
fingers crossed!!!!!!!!!!!!!!!!!!!!!

Funny my car a 2.6 ran shuffle free with the old plain bearing type 2540s. I liked the off boost drive as the exhaust flowed better through the bigger Turbine housing. Then they grazed on big end shell pieces.

The shuffle I speak of is when the dump valves cycle when in fifth gear
At around 3000 RPM and the car jerks forwards and back as if it has a misfire with the valves opening and closing making the usual dump sound but a lot faster. I have blocked the pipe to one of the valves under the front drivers wing,the car runs well now without jerking. I will get a better after market single dump valve later.

I think there are Two problems that people have one is the dump valves cycling, the other true Turbo shuffle.

DAN00H · 5th December 2006, 04:13 AM

HI All

there was an interesting article in one of the tuner mags over here in Australia called vibrating spring (I think!) it referred to the action of the air vibrating back and forth through the AFM in pulses as the engine drew in the air. it was tested on the GTR, so I will see if I can dig out the mag and perhaps get some digi photos up (if I remember!). from memory, a lot of it came down to tuning. are you guys with the issue sure the cam timing is correct?

Cheers

DAN00H

drive · 5th December 2006, 07:46 PM

i had the worst shuffle ever when i fitted the hks gtrs turbos on my 2.6gtr!!! i changed them for some new garrett ones and it still shuffles at around 3000rpm in 5th or 6th on the motorway but is no where near as bad as it was before.
i have learnt from experience that it is so important to research before you go ahead and buy performance parts.
i later found out that hks said that the gtrs turbos were only suitable for the rb26 engine with a 2.7 or larger stroker kit.
im pretty sure that you will experience shuffle with most uprated twin turbo kits.... thats just the way it is

kismetcapitan · 10th February 2007, 03:14 PM

"careful tuning will reduce/eliminate turbo shuffle" - can someone be more precise? Are we talking AFM curves, ignition maps, or what?

Tomei Poncams, 2860-5s, today I ran into something when cruising in 5th. Put the throttle down about halfway, the car boosted to 0.5bar then stuck there with the recirc BOVs going back and forth at each other like a seesaw - wheesh/whoosh/wheesh/whoosh/wheesh/whoosh. Lifted, downshifted, got on it hard and the car boosted normal. Not sure if this is shuffle. I do get the chopped up choo-choo-choo-choo whenever I lift (Apexi super-intake). I'm mostly hoping that nothing is wrong with my factory BOVs - I like them, I like the sound, and with the 2860s they are a lot louder than ever before.

View Poll Results: Does Your Skyline Shuffle?
Twin Turbo Set Up With AFM'S And Shuffle	71	39.23%
Twin Turbo Set Up With AFM'S And NO Shuffle	58	32.04%
Twin Turbo Set Up Without AFM'S No Shuffle	12	6.63%
Twin Turbo Set Up Without AFM'S And Shuffle If Poss	10	5.52%
I AM WISE AND HAVE A T04Z SINGLE OR ANOTHER	30	16.57%
Voters: 181. You may not vote on this poll

30th August 2006, 05:22 PM	#65 (permalink)
R32 Combat New Users Join Date: Jan 2004 Location: Berkshire Posts: 4,357	No!

Thread Tools
Show Printable Version Email this Page
Display Modes	Rate This Thread
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode	Rate This Thread:

6th April 2006, 02:54 PM	#61 (permalink)
R32 Combat New Users Join Date: Jan 2004 Location: Berkshire Posts: 4,357	After looking at Mooks post about your 1st post, mine was about turbo shuffle. How bizarre...

30th August 2006, 10:38 AM	#63 (permalink)
paul cawson New Users Join Date: Jul 2003 Location: Essex Posts: 2,098	Would it make a difference if one turbo was more efficient than the other, the outlets both feed into the same pipe that feeds all Six cylinders?

21st September 2006, 01:07 PM	#68 (permalink)
Stan GTR Register Member Join Date: Jun 2006 Location: Lancashire Posts: 1,291	If my throttle hits max boost (whatever the setting), and I hold it there, then the car seems to jerk slightly, and there a strange whirring noise (usually three times) - also the turbo boost dial fluctuates - is this the shuffles? I've not had the car long & I know the previous owner fitted new AFMs & a boost controller just before I got it. Could there be a problem with the set up ?

21st October 2006, 07:46 PM	#69 (permalink)
paul cawson New Users Join Date: Jul 2003 Location: Essex Posts: 2,098	I managed to cure my car tonight of its shuffle sure will miss it

21st October 2006, 08:53 PM	#70 (permalink)
GeorgeBush New Users Join Date: Feb 2004 Location: Essex Posts: 399	How'd you do that?

22nd October 2006, 09:26 AM	#71 (permalink)
drive GTR Register Member Join Date: Jan 2006 Location: portsmouth Posts: 307	mate, i know all about the funky shuffle!!!! infact i can honestly say there probably hasnt been anyone out there who has experienced any more shuffle than i had goin on!!!!!!! my problem was lack of knowlage basically. i thought i was getting i right bargain when i bought the twin gtrs turbo kit brand new off someone on this website for £1900. it was only after i had paid for them i realised that these were not best suited to my 2.6lt engine and infact hks said not to use them unless you had the 2.8lt or the 3.0lt stroker kit. mark at abbey told me i would get a shuffle problem, but me being me i just thought oh well it cant be that bad......... big mistache!!!!!!!!! this was an absolute f$$king nightmare!!!!! it was well noisey, very very annoying and whats more a complete headache on fuel consumption, infact i was doing around 100miles on a full tank (£55) i couldnt handle driving the car around like this for long and have recently changed these turbos for smaller garrett ones. im still running my new engine in at the moment and am having a re-map on weds. i am expecting and also hoping for little or no shuffle whatsoever. fingers crossed!!!!!!!!!!!!!!!!!!!!!

5th December 2006, 04:13 AM	#73 (permalink)
DAN00H GTR Register Member Join Date: Jul 2004 Location: Canberra - Australia Posts: 230	HI All there was an interesting article in one of the tuner mags over here in Australia called vibrating spring (I think!) it referred to the action of the air vibrating back and forth through the AFM in pulses as the engine drew in the air. it was tested on the GTR, so I will see if I can dig out the mag and perhaps get some digi photos up (if I remember!). from memory, a lot of it came down to tuning. are you guys with the issue sure the cam timing is correct? Cheers DAN00H

5th December 2006, 07:46 PM	#74 (permalink)
drive GTR Register Member Join Date: Jan 2006 Location: portsmouth Posts: 307	i had the worst shuffle ever when i fitted the hks gtrs turbos on my 2.6gtr!!! i changed them for some new garrett ones and it still shuffles at around 3000rpm in 5th or 6th on the motorway but is no where near as bad as it was before. i have learnt from experience that it is so important to research before you go ahead and buy performance parts. i later found out that hks said that the gtrs turbos were only suitable for the rb26 engine with a 2.7 or larger stroker kit. im pretty sure that you will experience shuffle with most uprated twin turbo kits.... thats just the way it is

10th February 2007, 03:14 PM	#75 (permalink)
kismetcapitan GTR Register Member Join Date: Nov 2005 Location: Seoul Korea Posts: 6,608	"careful tuning will reduce/eliminate turbo shuffle" - can someone be more precise? Are we talking AFM curves, ignition maps, or what? Tomei Poncams, 2860-5s, today I ran into something when cruising in 5th. Put the throttle down about halfway, the car boosted to 0.5bar then stuck there with the recirc BOVs going back and forth at each other like a seesaw - wheesh/whoosh/wheesh/whoosh/wheesh/whoosh. Lifted, downshifted, got on it hard and the car boosted normal. Not sure if this is shuffle. I do get the chopped up choo-choo-choo-choo whenever I lift (Apexi super-intake). I'm mostly hoping that nothing is wrong with my factory BOVs - I like them, I like the sound, and with the 2860s they are a lot louder than ever before.