Crush Washer?

NeedforZ · 06-27-2009, 04:30 PM

So I finally did my first oil change today at 1775 mi. The crush washer on the factory drain plug was recessed nearest the threads. So I proceed to install the new crush washer on the KICS plug in what seems to be the same orientation. Is this right or does it matter? Of course I start thinking about this after I've put the new oil in and reinstalled the 900+ screws in the plastic cover.

WShade · 06-27-2009, 04:56 PM

Thats right. Larger radius side to the block and smaller to the bolt. You should be able to look at it from the top and still see the flange of the smaller radius side as the OEM one is in your picture.

FricFrac · 06-27-2009, 04:56 PM

That drain plug looks awefully aluminumy - if that's the case I'd put the flatish side on the face of the bolt.....

semtex · 06-27-2009, 05:20 PM

The way you have it is correct. There's a little notch on one side -- you thread the plug into the side with the notch. It's kinda idiot proof, actually. Hard to tell from the pic, but the way these washers are designed, it 'naturally' goes on one way. I'm curious though -- why didn't you use the washer that came with the plug? The KICS washers ship with its own crush washer.

NeedforZ · 06-27-2009, 05:29 PM

The KICS washers looked like ordinary flat washers. The crush washer I ended up using came straight from the dealership. Here's a pic of everything I used.

GreenJalapeno · 06-27-2009, 06:38 PM

^haha just like AK :P

FricFrac · 06-28-2009, 03:23 AM

... so is that drain plug aluminum then?

NeedforZ · 06-28-2009, 09:49 AM

It didn't feel light weight when I installed it. But then again I'm sure the magnet insert is heavy. Can anyone on this board read the Japanese writing on the package?

FricFrac · 06-28-2009, 11:04 AM

It looks anodized and as far as I know you can only anodize Aluminum... so if it is I wonder how much you can crush the copper washer before you strip the aluminum threads

VCuomo · 06-29-2009, 10:22 PM

So, as semtex asked, why not just use the washer that comes with the plug?

In fact, even if you don't use the magnetic plug, why not just switch to a flat nylon washer (like many cars have) that can be re-used at each oil change? Is there anything that sacred about the copper crush washer?

vtec to vvel · 06-22-2015, 11:32 PM

For those that DIY oil changes, whenever you replace the copper o-ring on the drain plug, do you have a hard time getting it to go all the way down? Most of the time, it will go down to the second to last thread, but not completely down to the bottom of the bolt?

90 ST · 06-22-2015, 11:58 PM

Sounds like you need a bigger hammer.

nis350 · 06-23-2015, 12:06 AM

that's fine. once you tighten the bolt and oring washer would be crushed and sit flush. make sure you put in the oring washer correctly.

Quote:

Originally Posted by vtec to vvel

For those that DIY oil changes, whenever you replace the copper o-ring on the drain plug, do you have a hard time getting it to go all the way down? Most of the time, it will go down to the second to last thread, but not completely down to the bottom of the bolt?

GZ3 · 06-23-2015, 12:12 AM

yup everytime...it will crush into place

Spooler · 06-23-2015, 12:40 AM

How are you placing the copper wash on the drain plug?

06-27-2009, 04:30 PM	#1 (permalink)
NeedforZ Base Member Join Date: Mar 2009 Location: DFW Texas Posts: 163 Drives: 370z Touring 7AT Rep Power: 16	Crush Washer? So I finally did my first oil change today at 1775 mi. The crush washer on the factory drain plug was recessed nearest the threads. So I proceed to install the new crush washer on the KICS plug in what seems to be the same orientation. Is this right or does it matter? Of course I start thinking about this after I've put the new oil in and reinstalled the 900+ screws in the plastic cover.

06-27-2009, 04:56 PM	#2 (permalink)
WShade Track Member Join Date: Jan 2009 Location: San Antonio, TX Posts: 765 Drives: 09 370Z T/S/N Rep Power: 187	Thats right. Larger radius side to the block and smaller to the bolt. You should be able to look at it from the top and still see the flange of the smaller radius side as the OEM one is in your picture. ChesapeakeVA likes this. __________________ Q50S Q60 RS400

06-27-2009, 04:56 PM	#3 (permalink)
FricFrac A True Z Fanatic Join Date: Dec 2008 Location: Victoria, BC Posts: 1,481 Drives: 370Z 300ZX 280ZX 240 Rep Power: 229	That drain plug looks awefully aluminumy - if that's the case I'd put the flatish side on the face of the bolt..... __________________ '09 370Z - '93 300ZX Vert - '83 280ZX - '83 280ZXT -'81 280ZXT stroker - '72 240Z - Stillen CBE, HFC, G3, Grounding Kit, Sways // Swift Spring // H&R 15mm // 5% Tint // Clear Bra //

06-27-2009, 05:20 PM	#4 (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	The way you have it is correct. There's a little notch on one side -- you thread the plug into the side with the notch. It's kinda idiot proof, actually. Hard to tell from the pic, but the way these washers are designed, it 'naturally' goes on one way. I'm curious though -- why didn't you use the washer that came with the plug? The KICS washers ship with its own crush washer. __________________ "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.

06-28-2009, 03:23 AM	#7 (permalink)
FricFrac A True Z Fanatic Join Date: Dec 2008 Location: Victoria, BC Posts: 1,481 Drives: 370Z 300ZX 280ZX 240 Rep Power: 229	... so is that drain plug aluminum then? __________________ '09 370Z - '93 300ZX Vert - '83 280ZX - '83 280ZXT -'81 280ZXT stroker - '72 240Z - Stillen CBE, HFC, G3, Grounding Kit, Sways // Swift Spring // H&R 15mm // 5% Tint // Clear Bra //

06-27-2009, 05:29 PM	#5 (permalink)
NeedforZ Base Member Join Date: Mar 2009 Location: DFW Texas Posts: 163 Drives: 370z Touring 7AT Rep Power: 16	The KICS washers looked like ordinary flat washers. The crush washer I ended up using came straight from the dealership. Here's a pic of everything I used.

06-27-2009, 06:38 PM	#6 (permalink)
GreenJalapeno Enthusiast Member Join Date: May 2009 Location: La Canada Flintridge Posts: 355 Drives: 10 Nissan 370Z PW M6 Rep Power: 291	^haha just like AK :P

06-28-2009, 09:49 AM	#8 (permalink)
NeedforZ Base Member Join Date: Mar 2009 Location: DFW Texas Posts: 163 Drives: 370z Touring 7AT Rep Power: 16	It didn't feel light weight when I installed it. But then again I'm sure the magnet insert is heavy. Can anyone on this board read the Japanese writing on the package?

06-28-2009, 11:04 AM	#9 (permalink)
FricFrac A True Z Fanatic Join Date: Dec 2008 Location: Victoria, BC Posts: 1,481 Drives: 370Z 300ZX 280ZX 240 Rep Power: 229	It looks anodized and as far as I know you can only anodize Aluminum... so if it is I wonder how much you can crush the copper washer before you strip the aluminum threads __________________ '09 370Z - '93 300ZX Vert - '83 280ZX - '83 280ZXT -'81 280ZXT stroker - '72 240Z - Stillen CBE, HFC, G3, Grounding Kit, Sways // Swift Spring // H&R 15mm // 5% Tint // Clear Bra //

06-29-2009, 10:22 PM	#10 (permalink)
VCuomo Track Member Join Date: May 2009 Location: SoCal Posts: 887 Drives: BMW 335i Sport Rep Power: 17	So, as semtex asked, why not just use the washer that comes with the plug? In fact, even if you don't use the magnetic plug, why not just switch to a flat nylon washer (like many cars have) that can be re-used at each oil change? Is there anything that sacred about the copper crush washer? KoolKarmaJoe likes this.

06-22-2015, 11:32 PM	#11 (permalink)
vtec to vvel A True Z Fanatic Join Date: Feb 2015 Location: 813 Posts: 3,915 Drives: 13 Z Rep Power: 502909	Copper O-Ring For those that DIY oil changes, whenever you replace the copper o-ring on the drain plug, do you have a hard time getting it to go all the way down? Most of the time, it will go down to the second to last thread, but not completely down to the bottom of the bolt? __________________ Don't like what I post? Too bad. I really don't give a sh!t

06-22-2015, 11:58 PM	#12 (permalink)
90 ST A True Z Fanatic Join Date: May 2010 Location: Calgary Posts: 1,861 Drives: 90 and 15 GMC Sierra Rep Power: 421	Sounds like you need a bigger hammer.

06-23-2015, 12:12 AM	#14 (permalink)
GZ3 A True Z Fanatic Join Date: Dec 2009 Location: SATX Posts: 3,296 Drives: Z Rep Power: 22	yup everytime...it will crush into place __________________ 09 GT-R 12' 370Z 7AT HANDED DOWN 12'+13' 5.0 SOLD

06-23-2015, 12:40 AM	#15 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,830 Drives: 2013 Nismo 370z Rep Power: 2684392	How are you placing the copper wash on the drain plug?

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