tried it all, turbo/manifold studs comming loose. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

IRN · 12-12-2007, 10:38 PM

thread lock = fail
locking washer = fail
locking nut = fail

nothing will hold. the last time i used locking washers, locking nut, and even toped it off with thread lock and it still managed to come loose. im running out of t25 gaskets so any info will help. Im running project nissan semi-solid mounts and the car vibrates a good amount. unless the studs keep stretching those mounts are shaking every nut loose on that turbo. Tomorrow is my third time redoing that gasket because of this problem. any input ? thanks

WILDACEX187 · 12-12-2007, 10:47 PM

spot weld

slideways2004 · 12-12-2007, 10:50 PM

double nut and thread lock. the 2nd nut keeps the 1st nut tight. the thread lock will burn off first time it gets hot but there will be crap left over that hopefully acts like a little stopper. if double nut doesn't work, spot weld. on my manifold, i have double nut on 3 of them and a spot weld on 1 stud where i couldn't get 2 nuts

yokotas13 · 12-12-2007, 10:50 PM

dude
you fail

Bolt
bolt form the turbo side to the manifold
when it comes out from the top, put a nut with a lockwasher on it
the problem is the studs are comming loose on the manifold side, so eliminate them.

slideways2004 · 12-12-2007, 10:59 PM

oh yeah a nut from the top also. 1 on top and 2 on bottom

IRN · 12-12-2007, 11:16 PM

thanks for the info. Im running a stock manifold so I will need to get it drilled. I just checked and ran out of t25 gaskets. Anyone know of other cars that use a t25 other then 300zx so i can buy a gasket at local auto parts store?

blu808 · 12-12-2007, 11:28 PM

300zx doesnt use t25 gaskets. 300zx uses tb2209 gaskets.

Anyways.

A big problem with old manifolds/studs is that the studs stretch and continue to stretch. I had the same problem and so did many of my customers. We figured out that if you replace the studs with either oem or arp and put a tiny tack weld on the nut it will stay tight.

www.ewwiwop.com

IRN · 12-12-2007, 11:37 PM

thanks for the correction. im already running arp studs that are just long enough to for 1 nut on the turbo end. anyone know if arp sells studs long enough for a nut on each end? and also any t25 turbo cars?

Thanks

!Zar! · 12-12-2007, 11:53 PM

Manifold kept coming loose, so Luke welded it on.

I mean it's a t25. Why put money into it?

Maxstyle · 12-13-2007, 12:47 AM

www.frsport.com under "turbo ass."

IStop4NoMan · 12-13-2007, 02:32 PM

my turbo studs broke and backed out when i used locking washers. i just got the OEM lock tabs and its holds just fine now. those seem to be the only things that work besides the tack weld idea.

statik · 12-13-2007, 02:47 PM

oem locking plates FTW, never had an issue with the studs or nuts since

posdrift240 · 12-13-2007, 02:48 PM

Which locktite are you using? Red or blue?

If you seriously don't wont it coming back off put a new nut on lock washer with the red locktite and take a punch and buger up the threads after you have it completly tight. Then let it set so the locktite cures.

If that don't work stick a rag in the gas tank and let er eat!!!!!

g6civcx · 12-13-2007, 02:53 PM

If all else fails, tack weld.

12-12-2007, 10:38 PM	#1
IRN Leaky Injector Join Date: Nov 2007 Location: land of the refs Age: 37 Posts: 130 Trader Rating: (0) Feedback Score: 0 reviews	tried it all, turbo/manifold studs comming loose. thread lock = fail locking washer = fail locking nut = fail nothing will hold. the last time i used locking washers, locking nut, and even toped it off with thread lock and it still managed to come loose. im running out of t25 gaskets so any info will help. Im running project nissan semi-solid mounts and the car vibrates a good amount. unless the studs keep stretching those mounts are shaking every nut loose on that turbo. Tomorrow is my third time redoing that gasket because of this problem. any input ? thanks

12-12-2007, 10:47 PM	#2
WILDACEX187 Post Whore! Join Date: Jan 2003 Location: QUEENZ, NYC Age: 42 Posts: 3,103 Trader Rating: (4) Feedback Score: 4 reviews	spot weld __________________ SR POWA COUPE LUVVV!!!

12-12-2007, 10:50 PM	#4
yokotas13 Post Whore! Join Date: Apr 2006 Location: Milford, CT Age: 40 Posts: 10,519 Trader Rating: (8) Rides Gallery: yokotas13 Feedback Score: 8 reviews	dude you fail Bolt bolt form the turbo side to the manifold when it comes out from the top, put a nut with a lockwasher on it the problem is the studs are comming loose on the manifold side, so eliminate them. __________________ 2015 Subaru Outback Overlander - Wagonofdoom

12-12-2007, 11:28 PM	#7
blu808 Post Whore! Join Date: Dec 2002 Location: Campbell, Ca Age: 42 Posts: 5,010 Trader Rating: (3) Feedback Score: 3 reviews	300zx doesnt use t25 gaskets. 300zx uses tb2209 gaskets. Anyways. A big problem with old manifolds/studs is that the studs stretch and continue to stretch. I had the same problem and so did many of my customers. We figured out that if you replace the studs with either oem or arp and put a tiny tack weld on the nut it will stay tight. www.ewwiwop.com __________________

12-12-2007, 11:53 PM	#9
!Zar! Post Whore! Join Date: Nov 2004 Location: North Korea Posts: 14,579 Trader Rating: (27) Feedback Score: 27 reviews	Manifold kept coming loose, so Luke welded it on. I mean it's a t25. Why put money into it? __________________

12-12-2007, 10:50 PM	#3
slideways2004 Nissanaholic! Join Date: Apr 2005 Location: Houston Age: 38 Posts: 1,706 Trader Rating: (6) Feedback Score: 6 reviews	double nut and thread lock. the 2nd nut keeps the 1st nut tight. the thread lock will burn off first time it gets hot but there will be crap left over that hopefully acts like a little stopper. if double nut doesn't work, spot weld. on my manifold, i have double nut on 3 of them and a spot weld on 1 stud where i couldn't get 2 nuts

12-12-2007, 10:59 PM	#5
slideways2004 Nissanaholic! Join Date: Apr 2005 Location: Houston Age: 38 Posts: 1,706 Trader Rating: (6) Feedback Score: 6 reviews	oh yeah a nut from the top also. 1 on top and 2 on bottom

12-12-2007, 11:16 PM	#6
IRN Leaky Injector Join Date: Nov 2007 Location: land of the refs Age: 37 Posts: 130 Trader Rating: (0) Feedback Score: 0 reviews	thanks for the info. Im running a stock manifold so I will need to get it drilled. I just checked and ran out of t25 gaskets. Anyone know of other cars that use a t25 other then 300zx so i can buy a gasket at local auto parts store?

12-12-2007, 11:37 PM	#8
IRN Leaky Injector Join Date: Nov 2007 Location: land of the refs Age: 37 Posts: 130 Trader Rating: (0) Feedback Score: 0 reviews	thanks for the correction. im already running arp studs that are just long enough to for 1 nut on the turbo end. anyone know if arp sells studs long enough for a nut on each end? and also any t25 turbo cars? Thanks

12-13-2007, 12:47 AM	#10
Maxstyle Zilvia FREAK! Join Date: Jul 2005 Location: Westminster (SoCal) Posts: 1,047 Trader Rating: (12) Rides Gallery: Maxstyle Feedback Score: 12 reviews	www.frsport.com under "turbo ass."

12-13-2007, 02:32 PM	#11
IStop4NoMan Zilvia Junkie Join Date: Mar 2006 Location: so cal Posts: 310 Trader Rating: (13) Feedback Score: 13 reviews	my turbo studs broke and backed out when i used locking washers. i just got the OEM lock tabs and its holds just fine now. those seem to be the only things that work besides the tack weld idea.

12-13-2007, 02:47 PM	#12
statik Zilvia FREAK! Join Date: Oct 2003 Location: Long Island, NY Age: 40 Posts: 1,358 Trader Rating: (0) Rides Gallery: statik Feedback Score: 0 reviews	oem locking plates FTW, never had an issue with the studs or nuts since __________________ 97 240sx esaarr \| Current Status: SOLD

12-13-2007, 02:48 PM	#13
posdrift240 Zilvia Member Join Date: Oct 2007 Location: Rhea Posts: 207 Trader Rating: (0) Feedback Score: 0 reviews	Which locktite are you using? Red or blue? If you seriously don't wont it coming back off put a new nut on lock washer with the red locktite and take a punch and buger up the threads after you have it completly tight. Then let it set so the locktite cures. If that don't work stick a rag in the gas tank and let er eat!!!!! __________________

12-13-2007, 02:53 PM	#14
g6civcx Post Whore! Join Date: Apr 2004 Location: Virginia, USA Posts: 5,764 Trader Rating: (5) Feedback Score: 5 reviews	If all else fails, tack weld.