M/T and A/T flywheel bolts have the same part# - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Neejay · 02-04-2007, 03:49 AM

I was putting together my bolts/nuts part# list to order, but when I was looking through Nissan FAST 2003 USDM, the part numbers for the flywheel bolts seem to be the same:

12310A (12315-42L11) is the bolt(s) I need right? If that's the case, then they're coming up the same part# in FAST. I've seen a lot of people say I need the M/T flywheel bolts, but do I really?

???

SochBAT · 02-04-2007, 04:01 AM

I was chitchatting with him on this as well, and i guess we're both stumped.

I've always thought the only difference was 12200J.

FRpilot · 02-04-2007, 04:18 AM

yes you need the mt flywheel bolts.. they are different sizes. iirc, the mt bolts are slightly longer. it could be the other way around.. but logically.. the mt flywheel is bigger than the at one. but they are DIFFERENT for sure. i've compared both of them.

you dont want to use the at ones that are too short and cant hold the flywheel on. you also dont want to have the flywheel spinning at 5000rpms come loose and spin out to cut your legs off.

sorry can't help with the part number. dont know it.

projectRDM · 02-04-2007, 12:13 PM

M/T bolts are larger and longer.

nightkid86 · 02-04-2007, 12:34 PM

M/T are longer.

Dream240 · 02-05-2007, 07:00 AM

Quote:

Originally Posted by FRpilot

you dont want to use the at ones that are too short and cant hold the flywheel on. you also dont want to have the flywheel spinning at 5000rpms come loose and spin out to cut your legs off.

Jesus....talk about worst case. And yes to support other inputs, the MT bolts are longer. Just go to the dealer and order them, they will have an "MT" on the bolt head if they are MT bolts.....

GL

5t341tH · 02-05-2007, 10:22 AM

^^ yep they do have M/T on the bolt heads. the auto ones have A/T
very convenient

RotaryHog · 02-05-2007, 10:36 AM

Quote:

Originally Posted by R240NA

M/T bolts are larger and longer.

I agree. Also they are marked on the heads. Mt and At.

boyou2 · 02-05-2007, 10:44 AM

i agree>>MT bolts are longer,and a little bit stronger because of this longer size

lilredstiffy · 02-05-2007, 10:47 AM

Different bolts

just to re-affirm

top of bolt really does say either AT or MT

Neejay · 02-05-2007, 01:17 PM

Wow, thanks a lot guys! Looks like I'll just have to go to the dealership. The only things left for my 5sp conversion is a SS clutch line, flywheel and engine-to-tranny bolts, and my z32 clutch setup.

Thanks guys.

Neejay · 03-01-2007, 11:29 PM

Anyone know the length/pitch of the flywheel bolts?

Nachtmensch · 03-01-2007, 11:32 PM

i have AT bolts on my flywheel. works fine w/o a problem. just TQ them to spec

Neejay · 03-01-2007, 11:33 PM

Quote:

Originally Posted by dc2_lsvtec

i have AT bolts on my flywheel. works fine w/o a problem. just TQ them to spec

hmm...how long have you been using them?

projectRDM · 03-02-2007, 08:01 AM

Not suggested. The A/T bolts are much shorter.

orion::S14 · 03-02-2007, 08:28 AM

^^^ Just to reaffirm...it is NOT smart to use A/T bolts on an M/T flywheel.

WAY too short.

- Brian

Neejay · 03-02-2007, 09:01 AM

Quote:

Originally Posted by orion::S14

^^^ Just to reaffirm...it is NOT smart to use A/T bolts on an M/T flywheel.

WAY too short.

- Brian

Brian, I actually used your site for the part numbers for the bolts. Do you happen to know the length/thread pitch of the flywheel bolts?

Thanks guys, I remembered the length issue AFTER I replied to the guy.

02-04-2007, 03:49 AM	#1
Neejay Post Whore! Join Date: Jan 2004 Location: lol Age: 39 Posts: 2,586 Trader Rating: (2) Rides Gallery: Neejay Feedback Score: 2 reviews	M/T and A/T flywheel bolts have the same part# I was putting together my bolts/nuts part# list to order, but when I was looking through Nissan FAST 2003 USDM, the part numbers for the flywheel bolts seem to be the same: 12310A (12315-42L11) is the bolt(s) I need right? If that's the case, then they're coming up the same part# in FAST. I've seen a lot of people say I need the M/T flywheel bolts, but do I really? ???

02-04-2007, 12:34 PM	#5
nightkid86 Leaky Injector Join Date: Oct 2005 Location: NC Posts: 57 Trader Rating: (0) Feedback Score: 0 reviews	M/T are longer. __________________

02-05-2007, 10:22 AM	#7
5t341tH Post Whore! Join Date: Jun 2006 Location: socal (Huntington Beach) Age: 36 Posts: 2,787 Trader Rating: (14) Feedback Score: 14 reviews	^^ yep they do have M/T on the bolt heads. the auto ones have A/T very convenient __________________ lexus baby

02-05-2007, 10:47 AM	#10
lilredstiffy Zilvia Addict Join Date: Nov 2001 Location: louisiana Posts: 618 Trader Rating: (0) Feedback Score: 0 reviews	Different bolts just to re-affirm top of bolt really does say either AT or MT __________________ KEEP CHARLIE MERCER BANNED HES A GOOD FOR NOTHING RACIST KEEP CHARLIE MERCER BANNED HES A GOOD FOR NOTHING RACIST KEEP CHARLIE MERCER BANNED HES A GOOD FOR NOTHING RACIST KEEP CHARLIE MERCER BANNED HES A GOOD FOR NOTHING RACIST KEEP CHARLIE MERCER BANNED HES A GOOD FOR NOTHING RACIST KEEP CHARLIE MERCER BANNED HES A GOOD FOR NOTHING RACIST KEEP CHARLIE MERCER BANNED HES A GOOD FOR NOTHING RACIST

03-02-2007, 08:28 AM	#16
orion::S14 Nissanaholic! Join Date: May 2003 Location: Orange Park, FL Posts: 1,666 Trader Rating: (0) Feedback Score: 0 reviews	^^^ Just to reaffirm...it is NOT smart to use A/T bolts on an M/T flywheel. WAY too short. - Brian __________________ www.KA24DEvelopment.com

02-04-2007, 04:01 AM	#2
SochBAT Post Whore! Join Date: Dec 2004 Location: Abilene, TX Age: 39 Posts: 6,428 Trader Rating: (9) Rides Gallery: SochBAT Feedback Score: 9 reviews	I was chitchatting with him on this as well, and i guess we're both stumped. I've always thought the only difference was 12200J.

02-04-2007, 12:13 PM	#4
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 51 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	M/T bolts are larger and longer.

02-05-2007, 10:44 AM	#9
boyou2 Zilvia Junkie Join Date: Jan 2007 Location: france Posts: 413 Trader Rating: (0) Feedback Score: 0 reviews	i agree>>MT bolts are longer,and a little bit stronger because of this longer size

02-05-2007, 01:17 PM	#11
Neejay Post Whore! Join Date: Jan 2004 Location: lol Age: 39 Posts: 2,586 Trader Rating: (2) Rides Gallery: Neejay Feedback Score: 2 reviews	Wow, thanks a lot guys! Looks like I'll just have to go to the dealership. The only things left for my 5sp conversion is a SS clutch line, flywheel and engine-to-tranny bolts, and my z32 clutch setup. Thanks guys.

03-01-2007, 11:29 PM	#12
Neejay Post Whore! Join Date: Jan 2004 Location: lol Age: 39 Posts: 2,586 Trader Rating: (2) Rides Gallery: Neejay Feedback Score: 2 reviews	Anyone know the length/pitch of the flywheel bolts?

03-01-2007, 11:32 PM	#13
Nachtmensch Zilvia Addict Join Date: Jul 2005 Location: Dekalb, IL Age: 37 Posts: 698 Trader Rating: (0) Feedback Score: 0 reviews	i have AT bolts on my flywheel. works fine w/o a problem. just TQ them to spec

03-02-2007, 08:01 AM	#15
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 51 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	Not suggested. The A/T bolts are much shorter.

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