Crankshaft Pulley Install Help

ShadowJester6 · 02-15-2021, 06:25 PM

Good Day All,

I had a question that hopefully one of you bros may be able to assist with. Some time ago I had purchased the Stillen lightweight crankshaft pulley. This weekend I got around to actually installing it. I have removed the old pulley and lined up the new pulley with the key on the crankshaft by hand, then used the old pulley bolt to seat the the pulley on the shaft. The new pulley seated on the crankshaft easily. However, with the Stillen pulley seated, there is approximately 16.5mm/.5" between the end of the crank and the face of the pulley. My question is whether or not this is normal? I did not get a good look at the old pulley before removing it and the FSM does not mention anything on the matter. It appears that everything is lined up just fine. The pulley appears to be in line with all of the accessory/idler pulleys. From what I was able to gather about other cars is a gap between the end of the crankshaft and the pulley is common and normal. However, I could not find anything Nissan specific, and the gap I have seems pretty substantial. I just don't have any confirmation of whether this seemingly substantial gap is normal of not. I have attached some pictures of the pulley on the crankshaft for reference. I've also contacted Stillen directly but their response was: "Thank you for your inquiry. Unfortunately, At this time being, we do not have any more technicians or engineers, so i rather not give any false information in regards to a crucial step such as this."

Any assistance would be greatly appreciated.

SouthArk370Z · 02-15-2021, 09:00 PM

In my limited experience with harmonic balancers and vibration dampers on older engines (1960s-1980s), there will be some variation in where different units fit on the driveshaft. As long as the belt(s) lines up, you should be good to go.

Rusty · 02-15-2021, 09:09 PM

If the belts line up, and the bolt is torqued. You're good to go.

ShadowJester6 · 02-15-2021, 10:03 PM

That was my logic too. I also can't think of anything that could have shifted or anything either.

Half an inch of gap just seems like a bit much though. Also, the techs over at Z1 "haven't seen anything like this." I just don't want to torque this down, start it up, and have it go kablamo over a pulley.

Thanks for the replies guys! Keep 'em coming if anyone else has an opinion on the matter. I'll wait a little longer to see if anyone else has input on it it. If not, I'll just risk it for the biscuit and hope for the best.

BettyZ · 02-23-2021, 11:29 PM

Quote:

Originally Posted by ShadowJester6

Good Day All,

I had a question that hopefully one of you bros may be able to assist with. Some time ago I had purchased the Stillen lightweight crankshaft pulley. This weekend I got around to actually installing it. I have removed the old pulley and lined up the new pulley with the key on the crankshaft by hand, then used the old pulley bolt to seat the the pulley on the shaft. The new pulley seated on the crankshaft easily. However, with the Stillen pulley seated, there is approximately 16.5mm/.5" between the end of the crank and the face of the pulley. My question is whether or not this is normal? I did not get a good look at the old pulley before removing it and the FSM does not mention anything on the matter. It appears that everything is lined up just fine. The pulley appears to be in line with all of the accessory/idler pulleys. From what I was able to gather about other cars is a gap between the end of the crankshaft and the pulley is common and normal. However, I could not find anything Nissan specific, and the gap I have seems pretty substantial. I just don't have any confirmation of whether this seemingly substantial gap is normal of not. I have attached some pictures of the pulley on the crankshaft for reference. I've also contacted Stillen directly but their response was: "Thank you for your inquiry. Unfortunately, At this time being, we do not have any more technicians or engineers, so i rather not give any false information in regards to a crucial step such as this."

Any assistance would be greatly appreciated.

I have to ask.. was that actually Stillen's response??

Because if so, holy sh*t. Good luck getting assistance ya'll with SCs!

Sent from my SM-G955U using Tapatalk

BettyZ · 02-23-2021, 11:32 PM

Quote:

Originally Posted by ShadowJester6

That was my logic too. I also can't think of anything that could have shifted or anything either.

Half an inch of gap just seems like a bit much though. Also, the techs over at Z1 "haven't seen anything like this." I just don't want to torque this down, start it up, and have it go kablamo over a pulley.

Thanks for the replies guys! Keep 'em coming if anyone else has an opinion on the matter. I'll wait a little longer to see if anyone else has input on it it. If not, I'll just risk it for the biscuit and hope for the best.

What Rusty said. I would, for soundness of mind, pull the new pulley, reinstall the OEM, and see if there is a gap. Then pull the OEM and compare the two, see if their identically sized.

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1slow370 · 02-24-2021, 06:41 PM

I would just put the oem one back on and sell the stillen one on fb marketplace, eventually the stillen one is going to sieze to the crank and never come off again

SouthArk370Z · 02-24-2021, 08:20 PM

Quote:

Originally Posted by 1slow370

... eventually the stillen one is going to sieze to the crank and never come off again

A little bit of Never-Seez (or equiv) will lessen the chance of seizing/galling.

Spooler · 02-24-2021, 09:12 PM

Quote:

Originally Posted by 1slow370

I would just put the oem one back on and sell the stillen one on fb marketplace, eventually the stillen one is going to sieze to the crank and never come off again

LOL, when it cracks in two pieces will come off.

Tractionless · 03-03-2021, 10:58 AM

Is the Stillen even a harmonic balancer type?

1slow370 · 03-10-2021, 11:47 PM

Quote:

Originally Posted by Tractionless

Is the Stillen even a harmonic balancer type?

nope

02-15-2021, 09:00 PM	#2 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	In my limited experience with harmonic balancers and vibration dampers on older engines (1960s-1980s), there will be some variation in where different units fit on the driveshaft. As long as the belt(s) lines up, you should be good to go. JARblue, Rusty and redondoaveb like this. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

02-15-2021, 09:09 PM	#3 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,217 Drives: 2011 Nismo GM 6M Rep Power: 2684438	If the belts line up, and the bolt is torqued. You're good to go. JARblue, redondoaveb and BettyZ like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

02-24-2021, 06:41 PM	#7 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	I would just put the oem one back on and sell the stillen one on fb marketplace, eventually the stillen one is going to sieze to the crank and never come off again Rusty, Optimiser and Spooler like this. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

03-03-2021, 10:58 AM	#10 (permalink)
Tractionless A True Z Fanatic Join Date: Jan 2016 Location: Atlantic SE Posts: 1,326 Drives: '10 K23 ST 7AT Rep Power: 30525	Is the Stillen even a harmonic balancer type? __________________ Toys Not Tots

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02-15-2021, 10:03 PM	#4 (permalink)
ShadowJester6 Base Member Join Date: Dec 2015 Location: Oregon Posts: 23 Drives: '13 370z NISMO - MT Rep Power: 10	That was my logic too. I also can't think of anything that could have shifted or anything either. Half an inch of gap just seems like a bit much though. Also, the techs over at Z1 "haven't seen anything like this." I just don't want to torque this down, start it up, and have it go kablamo over a pulley. Thanks for the replies guys! Keep 'em coming if anyone else has an opinion on the matter. I'll wait a little longer to see if anyone else has input on it it. If not, I'll just risk it for the biscuit and hope for the best.