KA24E header stud question - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Xise · 08-14-2009, 11:32 AM

I should be getting my header in the mail today and I just sprayed all my bolts/studs with some wd40 to loosedn the rusted ones and I saw that I am missing a stud so i need to get a stud kit. I am not going to buy the ARP kit b/c it is twice what i paidfor the header lol, so I searched around and found this kit here

Car Part Wholesale - Auto Parts and Accessories Catalog - Mr Gasket Exhaust Stud - Aluminum, Universal product

It seemed like a decent price, but the sizes aren't in metric so i am not sure if it is going to fit, it did come up when I entered my car's info into the search. just wanted to know If anyone knows the exact sizes for the studs or where I can get a cheap stud kit.

Clark W. Griswald · 08-14-2009, 11:43 AM

If youre going to replace all of them anyways, take one off now and go to ace hardware or something like that to get the correct pitch and thread count. Use that and start sourcing the size you need from defferent companys that sell automotive hardware. Just my 2 cents.

Xise · 08-14-2009, 02:42 PM

Yeah i guess I could do that, just wanted to know if anyone knew the exact specs for the exhaust mani studs. I couldn't find it in the FSM. It is for a 1989 240sx XE KA24E sohch motor.

Just got the header in about an hour ago, so tomorrow if I have these bolts I can have everything done and the car will finally be up and running.

Xise · 08-14-2009, 05:28 PM

I also need to know what the torque specs are so I don't over tighten everything, or if anyone knows what page it is on in the FSM that would help too!!

southerncross · 08-14-2009, 05:29 PM

soak those studs/bolts with PB Blaster, not wd40. wd doesnt wick into the threads like PB will, and do it after your engine is warm. trust me, ive probably put 10 or more headers on older nissans, and its mandatory because the studs will definitely ruin your life if they break off inside.

Xise · 08-14-2009, 09:34 PM

yeah i am not going to do it today i just gave them an initial blast of wd to lossen them up a bit, smacked em with a ratchet to loose the a bit. Ill grab some pb blastere once I have thebrand new studs.

I def DO NOT want to break any bolts off in the head, thats why I was wondering on the torque specs and the exact size of the studs. Does anyone know the exact size of the sohc header studs??

I was going to coat the header in ceramic but it is so nice and shiny I kind of don't want to now, any really notice any benefit to coating header??

Quote:

Originally Posted by southerncross

soak those studs/bolts with PB Blaster, not wd40. wd doesnt wick into the threads like PB will, and do it after your engine is warm. trust me, ive probably put 10 or more headers on older nissans, and its mandatory because the studs will definitely ruin your life if they break off inside.

southerncross · 08-18-2009, 02:34 PM

if its a stainless header, wipe it down with alcohol before you put it on, and dont leave any fingerprints on it. if you do it right, and there is no dirt or oil from your hands, it will turn the header a really nice gold color once it gets hot. i do it on every one of mine.

i wouldnt torque them over 25 ft-lbs. they'll break in a heartbeat. also, dont trust any stud that isnt arp. if it feels like its still loose, run the engine for a while (with all of them in of course) and see if any try to back out. retorque after 15 or 20 minutes of running. as long as there are no exhaust leaks its good.

one last thing: torque from the inside to the outside on each flange.

stinky_180 · 08-18-2009, 06:48 PM

08120-8301a Bolt for the upper four holes (4needed

08223-83010 studs for lower four holes (4needed
08911-2081A nuts for lower four holes (4needed

14002E yoke for the manifold (8 needed

godrifttoday · 08-18-2009, 09:02 PM

u need just a bolt like one of the guys said from ur local ace harward store the thread pitch ( or what u ask for) is m8x1.25 lenght i would say estimate

Xise · 08-18-2009, 10:02 PM

thanks everyone, yeah I found the only place to get teh yoke washers is the dealer. no hardware store had the studs, i could get bolts but I am just ging to go to my local nissan dealer and get all these o i don't have to pay shipping. I ordered some nuts and studs from autozone according to what they had listed for the stusd the size looks wrong, they list it as m10 1.50 x 54mm......seems like that is the wrong measurement.

I should get tehm tomorrow so I will try them, but i am porabably going to have to return them.

Oh yea anyone have a really hard time getting thier egr fitting on the top off? I have hit this one bolt off with pb blaster for like 3 days and it will not budge, i almost want to cut my egr tube but I fear i would really regret doing that. tomorrow I am going to take my torch to it ans see if that helps, just looking for some suggestions

stinky_180 · 08-18-2009, 10:05 PM

try a flare nut wrench.

use the part numbers i listed above when going to the dealership.

Xise · 08-18-2009, 10:59 PM

well I already bought a set of wrenches for this job, plus whoever took this egr fitting off before stripped it bad, all the corners are rounded so I couldn't even grab it with anything I have. I probably need a new fitting at this point, so I just need to get the fitting off.

So before I go buy a new set of wrenches, do you know the size of the egr fitting? I have heard 24mm but it seems to big and 22 mm is too small.....and i just cant find a 23mm wrench.

HAWAII · 08-19-2009, 12:21 PM

if you are going to the dealer route, go get the studs for the Z32 TT

godrifttoday · 08-19-2009, 12:44 PM

did u order ur studs? i can send u some i can get them locally for cheap

Xise · 08-20-2009, 08:26 PM

bah too bad I ordered them like 3 days ago....

DataXUnknown · 08-29-2009, 02:19 PM

what exactly is the "yoke" for the manifold? i need all new 4 bolts for the upper part and nuts for the studs on the bottom. (exhaust)

Xise · 08-31-2009, 04:14 PM

the yoke is more or less a spacer so you don't overtightern the nuts/bolts, I have 4 bolts and 4 new studs if you need them, I am missing one yoke though but i have those aswell PM me if you need them

Quote:

Originally Posted by DataXUnknown

what exactly is the "yoke" for the manifold? i need all new 4 bolts for the upper part and nuts for the studs on the bottom. (exhaust)

08-14-2009, 11:32 AM	#1
Xise Zilvia Member Join Date: Mar 2009 Location: New England Age: 37 Posts: 179 Trader Rating: (2) Feedback Score: 2 reviews	KA24E header stud question I should be getting my header in the mail today and I just sprayed all my bolts/studs with some wd40 to loosedn the rusted ones and I saw that I am missing a stud so i need to get a stud kit. I am not going to buy the ARP kit b/c it is twice what i paidfor the header lol, so I searched around and found this kit here Car Part Wholesale - Auto Parts and Accessories Catalog - Mr Gasket Exhaust Stud - Aluminum, Universal product It seemed like a decent price, but the sizes aren't in metric so i am not sure if it is going to fit, it did come up when I entered my car's info into the search. just wanted to know If anyone knows the exact sizes for the studs or where I can get a cheap stud kit.

08-18-2009, 06:48 PM	#8
stinky_180 Nissanaholic! Join Date: May 2004 Location: Pale Blue Dot Age: 36 Posts: 2,064 Trader Rating: (26) Feedback Score: 26 reviews	08120-8301a Bolt for the upper four holes (4needed 08223-83010 studs for lower four holes (4needed 08911-2081A nuts for lower four holes (4needed 14002E yoke for the manifold (8 needed __________________ SoCal RallyX Coverage and MTB Ride Reports WheelsDirty

08-18-2009, 10:05 PM	#11
stinky_180 Nissanaholic! Join Date: May 2004 Location: Pale Blue Dot Age: 36 Posts: 2,064 Trader Rating: (26) Feedback Score: 26 reviews	try a flare nut wrench. use the part numbers i listed above when going to the dealership. __________________ SoCal RallyX Coverage and MTB Ride Reports WheelsDirty

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08-14-2009, 11:43 AM	#2
Clark W. Griswald Join Date: Mar 2009 Location: Hampton Raods Age: 35 Posts: 40 Trader Rating: (0) Feedback Score: 0 reviews	If youre going to replace all of them anyways, take one off now and go to ace hardware or something like that to get the correct pitch and thread count. Use that and start sourcing the size you need from defferent companys that sell automotive hardware. Just my 2 cents.

08-14-2009, 02:42 PM	#3
Xise Zilvia Member Join Date: Mar 2009 Location: New England Age: 37 Posts: 179 Trader Rating: (2) Feedback Score: 2 reviews	Yeah i guess I could do that, just wanted to know if anyone knew the exact specs for the exhaust mani studs. I couldn't find it in the FSM. It is for a 1989 240sx XE KA24E sohch motor. Just got the header in about an hour ago, so tomorrow if I have these bolts I can have everything done and the car will finally be up and running.

08-14-2009, 05:28 PM	#4
Xise Zilvia Member Join Date: Mar 2009 Location: New England Age: 37 Posts: 179 Trader Rating: (2) Feedback Score: 2 reviews	I also need to know what the torque specs are so I don't over tighten everything, or if anyone knows what page it is on in the FSM that would help too!!

08-14-2009, 05:29 PM	#5
southerncross Leaky Injector Join Date: Oct 2008 Location: georgia Age: 39 Posts: 69 Trader Rating: (0) Feedback Score: 0 reviews	soak those studs/bolts with PB Blaster, not wd40. wd doesnt wick into the threads like PB will, and do it after your engine is warm. trust me, ive probably put 10 or more headers on older nissans, and its mandatory because the studs will definitely ruin your life if they break off inside.

08-18-2009, 02:34 PM	#7
southerncross Leaky Injector Join Date: Oct 2008 Location: georgia Age: 39 Posts: 69 Trader Rating: (0) Feedback Score: 0 reviews	if its a stainless header, wipe it down with alcohol before you put it on, and dont leave any fingerprints on it. if you do it right, and there is no dirt or oil from your hands, it will turn the header a really nice gold color once it gets hot. i do it on every one of mine. i wouldnt torque them over 25 ft-lbs. they'll break in a heartbeat. also, dont trust any stud that isnt arp. if it feels like its still loose, run the engine for a while (with all of them in of course) and see if any try to back out. retorque after 15 or 20 minutes of running. as long as there are no exhaust leaks its good. one last thing: torque from the inside to the outside on each flange.

08-18-2009, 09:02 PM	#9
godrifttoday Post Whore! Join Date: Jan 2004 Location: los angeles Age: 37 Posts: 3,120 Trader Rating: (82) Feedback Score: 82 reviews	u need just a bolt like one of the guys said from ur local ace harward store the thread pitch ( or what u ask for) is m8x1.25 lenght i would say estimate

08-18-2009, 10:02 PM	#10
Xise Zilvia Member Join Date: Mar 2009 Location: New England Age: 37 Posts: 179 Trader Rating: (2) Feedback Score: 2 reviews	thanks everyone, yeah I found the only place to get teh yoke washers is the dealer. no hardware store had the studs, i could get bolts but I am just ging to go to my local nissan dealer and get all these o i don't have to pay shipping. I ordered some nuts and studs from autozone according to what they had listed for the stusd the size looks wrong, they list it as m10 1.50 x 54mm......seems like that is the wrong measurement. I should get tehm tomorrow so I will try them, but i am porabably going to have to return them. Oh yea anyone have a really hard time getting thier egr fitting on the top off? I have hit this one bolt off with pb blaster for like 3 days and it will not budge, i almost want to cut my egr tube but I fear i would really regret doing that. tomorrow I am going to take my torch to it ans see if that helps, just looking for some suggestions

08-18-2009, 10:59 PM	#12
Xise Zilvia Member Join Date: Mar 2009 Location: New England Age: 37 Posts: 179 Trader Rating: (2) Feedback Score: 2 reviews	well I already bought a set of wrenches for this job, plus whoever took this egr fitting off before stripped it bad, all the corners are rounded so I couldn't even grab it with anything I have. I probably need a new fitting at this point, so I just need to get the fitting off. So before I go buy a new set of wrenches, do you know the size of the egr fitting? I have heard 24mm but it seems to big and 22 mm is too small.....and i just cant find a 23mm wrench.

08-19-2009, 12:21 PM	#13
HAWAII Zilvia Addict Join Date: Jun 2009 Location: Burbank,Ca Age: 45 Posts: 716 Trader Rating: (24) Feedback Score: 24 reviews	if you are going to the dealer route, go get the studs for the Z32 TT

08-19-2009, 12:44 PM	#14
godrifttoday Post Whore! Join Date: Jan 2004 Location: los angeles Age: 37 Posts: 3,120 Trader Rating: (82) Feedback Score: 82 reviews	did u order ur studs? i can send u some i can get them locally for cheap

08-20-2009, 08:26 PM	#15
Xise Zilvia Member Join Date: Mar 2009 Location: New England Age: 37 Posts: 179 Trader Rating: (2) Feedback Score: 2 reviews	bah too bad I ordered them like 3 days ago....

08-29-2009, 02:19 PM	#16
DataXUnknown Post Whore! Join Date: Sep 2006 Location: Mission Viejo, CA Age: 31 Posts: 2,934 Trader Rating: (30) Rides Gallery: DataXUnknown Feedback Score: 30 reviews	what exactly is the "yoke" for the manifold? i need all new 4 bolts for the upper part and nuts for the studs on the bottom. (exhaust)