stillen underdrive pulley ?

redroadster10 · 04-05-2010, 08:22 PM

does this pulley have any noticeable power differences, i know stillen says 10 more horse but can you feel it an would it be worth the money to get ?

>135I · 04-05-2010, 09:21 PM

The search function is very useful on this website. Might want to give it a shot.

semtex · 04-06-2010, 02:40 PM

Stillen Underdrive Pulley - Review/Pics/Dyno/Vid

fstrnldr · 04-08-2010, 01:19 AM

Then google the problems with running an un-dampened crank pulley and what harmonics can do to an engines internals.

Josh@STILLEN · 04-08-2010, 02:14 AM

Quote:

Originally Posted by fstrnldr

Then google the problems with running an un-dampened crank pulley and what harmonics can do to an engines internals.

Yup.. with engines that have a harmonic dampener on the crank pulley, and aren't internally balanced, which the 3.7L 370Z motor is, would be a concern.

The Z motor is internally balanced, and the stock steel pulley (while needs to be extremely balanced, and getting a random pulley from somewhere sketchy like eBay is HIGHLY unadvised..) is heavy and can be improved on by moving to a billet aluminum pulley at a 1/4 of the weight.

There is a small rubber ring separating the internal and external portion, of the cast steel pulley, which acts as a dampener for itself and the accessories.. but the Z does NOT utilize a harmonic dampener.

fstrnldr · 04-08-2010, 02:54 AM

i would expect the engine to be internally balanced. Never said a word about the aftermarket pulley causing a vibration. What i implied is that it is a HARMONIC dampener, which it is. Can you explain how Nissan invented the first ever motor that creates no harmonics, and can't be effected by them?

04-05-2010, 08:22 PM	#1 (permalink)
redroadster10 Base Member Join Date: Feb 2010 Location: pennslyvania Posts: 52 Drives: 370z roadster 2010 Rep Power: 15	stillen underdrive pulley ? does this pulley have any noticeable power differences, i know stillen says 10 more horse but can you feel it an would it be worth the money to get ?

04-05-2010, 09:21 PM	#2 (permalink)
>135I Enthusiast Member Join Date: Apr 2009 Location: Radcliff, KY Age: 42 Posts: 409 Drives: 2003 Cobra Rep Power: 16	The search function is very useful on this website. Might want to give it a shot. __________________ I will miss my Z. I hope she goes to a good home.

04-06-2010, 02:40 PM	#3 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 54 Posts: 5,995 Drives: People to drink Rep Power: 32	Stillen Underdrive Pulley - Review/Pics/Dyno/Vid __________________ "There are no small accidents on this circuit." -- Ayrton Senna 316.8whp & 248 ft/lbs (Dyno Dynamics) \| 319whp & 256 ft/lbs (DynoJet) (04/23/10) Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

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04-08-2010, 01:19 AM	#4 (permalink)
fstrnldr Base Member Join Date: Apr 2009 Location: CA Posts: 170 Drives: Canyonero Rep Power: 16	Then google the problems with running an un-dampened crank pulley and what harmonics can do to an engines internals.

04-08-2010, 02:54 AM	#6 (permalink)
fstrnldr Base Member Join Date: Apr 2009 Location: CA Posts: 170 Drives: Canyonero Rep Power: 16	i would expect the engine to be internally balanced. Never said a word about the aftermarket pulley causing a vibration. What i implied is that it is a HARMONIC dampener, which it is. Can you explain how Nissan invented the first ever motor that creates no harmonics, and can't be effected by them?