Who's running a lightweight crank pulley?

Agent K · 08-30-2015, 01:25 PM

I've got a brand new NST pulley (black) just sitting on the shelf my garage. I changed my mind about installing it after reading the above and other opinions about the negatives.

DOOMMONKEY777 · 08-30-2015, 02:03 PM

It wouldnt really make too much difference, it only makes a difference in two occations that i know of, longentivity of the crank front bearings, and the damping stress of high engine rotations.

Basically the rear of the engine is where the transmision and load of the car at, on the front you have the load of engine parasites ie. Pumps, valves, alternator, the balanser is a heavy metal that will balance the rear and front loads so that the bearing wearnout on both sides of the engine the same speed, also keeping the vibrations low as well.

Removing or ultering these two will result in long term engine bearings rapid wearout if you dont mind then yeah throw light weight pulleys on and go racing, just remember to be ready to swap bearings sooner.

axmea? · 08-30-2015, 02:50 PM

I've had mine over two years. Lots of mileage and fun times driving the car with it. No issues.

12nismo · 08-31-2015, 08:51 AM

^Same here

Rusty · 08-31-2015, 07:00 PM

12nismo · 08-31-2015, 07:42 PM

Is that a crank from a VQ?

Megan370z · 08-31-2015, 07:59 PM

Quote:

Originally Posted by 12nismo

Is that a crank from a VQ?

it is not from our engine.

12nismo · 08-31-2015, 08:12 PM

I could be wrong, but other than a few cases of the actual pulley itself failing (usually due to bad installs) I haven't seen any engine issues (spun bearings, broken crank, etc) that was linked to a lightweight pulley...and I've seen alot of folks that have been running them on our platform for years. It seems that a lot of the advise against them is based in theory of what could happen rather than what actually has happened (at least with VQ motors). Not trying to discredit anyone, just giving my personal observations.

MILENKOGT · 08-31-2015, 08:47 PM

to change this up some, who on here has experience with Fluidamper or ATI Racing crank dampers?

Rusty · 08-31-2015, 09:17 PM

Quote:

Originally Posted by 12nismo

Is that a crank from a VQ?

It's a V8 crank that had a light weight pulley on it.

DR_ · 09-01-2015, 09:06 AM

IMO changing out the stock dual mass flywheel on the other side of the crank has to be more harmful than changing out the stock crank pulley.

MAMotorsports · 09-01-2015, 11:27 AM

Quote:

Originally Posted by MILENKOGT

to change this up some, who on here has experience with Fluidamper or ATI Racing crank dampers?

Pretty good amount with both, have worked with ATI very closely over the years.

What kind of questions do you have?

MILENKOGT · 09-01-2015, 12:52 PM

Quote:

Originally Posted by MAMotorsports

Pretty good amount with both, have worked with ATI very closely over the years.

What kind of questions do you have?

Actually, I was looking to purchase one for my VK56 (nissan Titan). I have seen them installed on the VK56 via pics online, but haven't found any part numbers for a bolt on setup. Seems like they have been one off designs for racing applications.

I was leaning more towards Fluidamper though, in terms of design.

I don't own a Z btw lol. I'm from the Titan realm. I just jump over here to see whats what.

MAMotorsports · 09-01-2015, 02:00 PM

Quote:

Originally Posted by MILENKOGT

Actually, I was looking to purchase one for my VK56 (nissan Titan). I have seen them installed on the VK56 via pics online, but haven't found any part numbers for a bolt on setup. Seems like they have been one off designs for racing applications.

I was leaning more towards Fluidamper though, in terms of design.

I don't own a Z btw lol. I'm from the Titan realm. I just jump over here to see whats what.

Well, we are pretty good with the VK56 to haha.

ATI has always been our go to, they have built us many custom set ups over the years. But do not currently have an off the shelf unit for the VK. Ross Balancer's are another option for the VK.

MILENKOGT · 09-01-2015, 03:44 PM

Quote:

Originally Posted by MAMotorsports

Well, we are pretty good with the VK56 to haha.

ATI has always been our go to, they have built us many custom set ups over the years. But do not currently have an off the shelf unit for the VK. Ross Balancer's are another option for the VK.

Oh yeah lol, I've talked to Ray and Brian. Great guys.

I will have to look into Ross Balancers. Who would you recommend for a street application. Engine is going to stay NA.

08-30-2015, 01:25 PM	#16 (permalink)
Agent K Base Member Join Date: Jul 2013 Location: Memphis, TN Posts: 155 Drives: '13 370Z MBlue 6MT Rep Power: 11	I've got a brand new NST pulley (black) just sitting on the shelf my garage. I changed my mind about installing it after reading the above and other opinions about the negatives. __________________ '13 370Z Midnight Blue 6MT / Touring Sport w/nav / PPE Long Tube Racing Headers / FI TDX 10" Resonator w/CF mufflers / K&N Drop-Ins / ZSpeed Underbody Shroud v2 / DRL 'always on' Mod

08-30-2015, 02:03 PM	#17 (permalink)
DOOMMONKEY777 A True Z Fanatic Join Date: Sep 2010 Location: Crooklyn Posts: 1,008 Drives: 370Z 6psd-sport-pkg Rep Power: 20	It wouldnt really make too much difference, it only makes a difference in two occations that i know of, longentivity of the crank front bearings, and the damping stress of high engine rotations. Basically the rear of the engine is where the transmision and load of the car at, on the front you have the load of engine parasites ie. Pumps, valves, alternator, the balanser is a heavy metal that will balance the rear and front loads so that the bearing wearnout on both sides of the engine the same speed, also keeping the vibrations low as well. Removing or ultering these two will result in long term engine bearings rapid wearout if you dont mind then yeah throw light weight pulleys on and go racing, just remember to be ready to swap bearings sooner. __________________ Kids don't do Drugs, Drugs are bad, so let the professional druggies do Drugs for you. 537whp/496lb/tq@8-9PSI 93 octane

08-30-2015, 02:50 PM	#18 (permalink)
axmea? A True Z Fanatic Join Date: Apr 2012 Location: SoCal Posts: 6,233 Drives: WELL ZED PW 6MT Rep Power: 53241	I've had mine over two years. Lots of mileage and fun times driving the car with it. No issues. Zoren 370 and 12nismo like this. __________________ >MyZ's Album< NISMO Convert/ECUTEK/Takeda CAI/F.I. HFC NR CB Carbon/F.I. 34 Row Oil Cooler/4.08 Final Drive /Powertrix+Swifts/Hotchkis/SPL/Whiteline/TWM/Zoom Engineering/EVO-R/AeroJacket Vented CF Fenders + CF Spoiler/Avant Garde-WORK/NST/Morimoto Halo/STi Clear Lenses/Carbon Signal Automotive/RJM Performance/ZSpeed Clutch Flywheel CSC delete

08-31-2015, 08:51 AM	#19 (permalink)
12nismo Base Member Join Date: Apr 2012 Location: Houston, TX Posts: 153 Drives: 2012 370z nismo Rep Power: 15	^Same here __________________ nismo Z34 12 0209 JTran Motorsports//Stillen//Fast Intentions//EcuTek//Z1 Motorsports//Eibach//BRIDE //Zspeed//Carbon Signal//Houston Halos//Southbend//Whiteline//TWM//NonStopTuning//Doran Racing

08-31-2015, 07:42 PM	#21 (permalink)
12nismo Base Member Join Date: Apr 2012 Location: Houston, TX Posts: 153 Drives: 2012 370z nismo Rep Power: 15	Is that a crank from a VQ? __________________ nismo Z34 12 0209 JTran Motorsports//Stillen//Fast Intentions//EcuTek//Z1 Motorsports//Eibach//BRIDE //Zspeed//Carbon Signal//Houston Halos//Southbend//Whiteline//TWM//NonStopTuning//Doran Racing

08-31-2015, 08:12 PM	#23 (permalink)
12nismo Base Member Join Date: Apr 2012 Location: Houston, TX Posts: 153 Drives: 2012 370z nismo Rep Power: 15	I could be wrong, but other than a few cases of the actual pulley itself failing (usually due to bad installs) I haven't seen any engine issues (spun bearings, broken crank, etc) that was linked to a lightweight pulley...and I've seen alot of folks that have been running them on our platform for years. It seems that a lot of the advise against them is based in theory of what could happen rather than what actually has happened (at least with VQ motors). Not trying to discredit anyone, just giving my personal observations. NOBLE\|370Z, DEpointfive0, Zoren 370 and 1 others like this. __________________ nismo Z34 12 0209 JTran Motorsports//Stillen//Fast Intentions//EcuTek//Z1 Motorsports//Eibach//BRIDE //Zspeed//Carbon Signal//Houston Halos//Southbend//Whiteline//TWM//NonStopTuning//Doran Racing

08-31-2015, 08:47 PM	#24 (permalink)
MILENKOGT Base Member Join Date: Jun 2015 Location: pensacola, fl Posts: 30 Drives: nissan titan Rep Power: 9	to change this up some, who on here has experience with Fluidamper or ATI Racing crank dampers? __________________ 2008 Nissan Titan Crew Cab 2wd JWT C8/S7 cam package, Full Bolt ons 372rwhp/447rwtq Uprev Tuned @ Z1 Motorsports

09-01-2015, 09:06 AM	#26 (permalink)
DR_ Track Member Join Date: Jul 2009 Location: Dallas Posts: 981 Drives: Touring/Sport M6 PG Rep Power: 16	IMO changing out the stock dual mass flywheel on the other side of the crank has to be more harmful than changing out the stock crank pulley. Megan370z likes this.

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