PSA: Sourced cheaper inconel m10x1.5 turbo studs

**Seerlah** · 03-28-2017 07:28 AM

I run Trackspeed inconel studs with Stage 8 locking nuts, and they come with a hefty price tag (like $125 for the kit). Want to run new studs on my new manifold and Trackspeed lets old customers buy replacement studs at $20/stud, which I have done in the past. But doing some internet searching, found these little puppies for $75. Cheaper than my "so called" past customer hook-up by a whopping $5, but not sure about shipping rates. That may determine the day. But for you first time buyers looking for inconel studs, here you go:

https://gcg.com.au/petrol-performanc...-pieces-detail

**SleeperAvant** · 03-28-2017 07:41 AM

Nice find! Better price than trackspeed. I currently run the trackspeed inconel studs and two copper lock nuts per stud.

**Seerlah** · 03-28-2017 07:53 AM

How you get the studs without the Stage 8 nuts?

For those who are not aware what we are talking about, this was the only way people like me was to avoid constantly blowing T3 gaskets. Blew many, till I finally dished out the money for the TrackSpeed kit.

http://www.trackspeedengineering.com...-stud-kit.html

**SleeperAvant** · 03-28-2017 08:01 AM

Originally Posted by Seerlah

How you get the studs without the Stage 8 nuts?

For those who are not aware what we are talking about, this was the only way people like me was to avoid constantly blowing T3 gaskets. Blew many, till I finally dished out the money for the TrackSpeed kit.

http://www.trackspeedengineering.com...-stud-kit.html

Mine came with the stage 8 nuts. I ditched the stage 8 nuts and locking tabs because they weren't doing their job.

**Seerlah** · 03-28-2017 08:05 AM

That sucks! They have been working for me.

**Steve Bassen** · 03-28-2017 08:15 AM

FYI, 3rd gen RX7's use inconel M10x1.5 studs... this is a copy/paste, so not sure how accurate the prices are, currently.

Downpipe Stud M10x1.5 43mm pn# 9YA9-01-002 $5.74
Downpipe Flange Nut (longer shoulder by about 3mm compared to Turbo Nuts) 9pn# YB1-01-001 $7.14

Turbo Stud M10x1.5 40mm pn# 9YA9-21-008 $10.24
Turbo Flange Nut pn# JE10-40-355 $4.25

**Seerlah** · 03-28-2017 08:17 AM

Good info

Edit: Just looked it up and seems a price hike has been applied. Cheapest price I can find for one stud is $17.xx before shipping. Still a great price and option, none the less.

http://www.jimellismazdaparts.com/pr...9YA921008.html

But price of the downpipe stud is still cheap.

http://www.jimellismazdaparts.com/pr...9YA901002.html

**SleeperAvant** · 03-28-2017 09:50 AM

Originally Posted by Steve Bassen

FYI, 3rd gen RX7's use inconel M10x1.5 studs... this is a copy/paste, so not sure how accurate the prices are, currently.

Downpipe Stud M10x1.5 43mm pn# 9YA9-01-002 $5.74
Downpipe Flange Nut (longer shoulder by about 3mm compared to Turbo Nuts) 9pn# YB1-01-001 $7.14

Turbo Stud M10x1.5 40mm pn# 9YA9-21-008 $10.24
Turbo Flange Nut pn# JE10-40-355 $4.25

That is an extraordinary find! Looks like miata turbo guys are using these also.

**Captain_Panic** · 03-28-2017 10:09 AM

I can't quite tell what part you are getting at exactly, but when I was putting mine back together, I kept snapping the stock studs. Tried to get two dealer replacements, snapped those too. So I went on a mission for an alternative. First step, I had to get a new torque wrench. I don't remember the exact torque spec for the manifold studs, but at the right setting I was still snapping studs. Turns out that my old snap wrench was snapping at 15 ft lbs OVER the setting.

I was at Advance Auto Parts, and looked all over for something that would work. Go the the "Help!" parts section, and grab two packs of 03411. These studs are a little longer, but come with all the nuts as well, and have a small (like 5.5-6mm) tip that you can screw the stud in.

I have had these in my car for 2k miles now and have had 0 issues. I think I even slightly overtorqued these as well by maybe 5 ft lbs. They hold up well.

Just occured to me I think you mean the turbo to downpipe studs, but hopefully this can help someone in the future.

http://shop.advanceautoparts.com/web...hedFrom=header

**Seerlah** · 03-28-2017 10:33 AM

m10x1.5 studs are for T3 flanged turbochargers (not sure about t4). Those who run a decent amount of air/exhaust can have an issue when it comes to the seal of the flange. Most have tried a few different ways, and I personally tried the ARP hardware approach (spent a fair amount on these and gaskets, including milling flanges flat w/cometic gaskets). End of the day, inconel studs with the Nissan OEM gasket fixed my issue. You simply won't find inconel steel in your every day auto parts store. Thread was about sourcing studs in that material.

http://www.miataturbo.net/diy-turbo-...l-studs-61737/

Issue was with studs and bolts always backing out the manifold. But with the Inconel studs, never happened but once to me (my fault). Since then, years of driving without blowing gaskets feels damn good.

**SleeperAvant** · 03-28-2017 10:38 AM

An interesting tidbit is if we can source inconel M10 nuts to go with the inconel M10 studs.

**Seerlah** · 03-28-2017 10:51 AM

That would be damn nice. two other kits I would try out for s first time user, and not aware of the issues many of went through is trying the Full Race kit and Treadstone kit. Both decently priced and I was about to pull he trigger on these...till I found the $75 inconel studs. So, then made the PSA.

https://www.full-race.com/store/turb...ware-kit.html/

http://www.treadstoneperformance.com...and+Gasket+Kit

But if using a gasket, OEM Nissan T3 is what most of us found to be the most stout also. PN 14415-4P200 (I have a spare at my house, and just ordered one more. I like having petty stuff like this handy around my house)

**SleeperAvant** · 03-28-2017 06:17 PM

A good suitable alternative which I never got around to would be to drill press some bolts or nuts and safety wire them.

**BumblebVR6** · 03-29-2017 02:36 PM

Are these the turbo to manifold studs? I was going to install oem style bolts whenever I get around to installing my eliminator. The oem bolts seem a bit too long so I picked up a few different lengths and bolt head types from McMaster-Carr. Should I go w/ a stud/nut combo instead?

**SleeperAvant** · 03-30-2017 05:33 AM

Originally Posted by BumblebVR6

Are these the turbo to manifold studs? I was going to install oem style bolts whenever I get around to installing my eliminator. The oem bolts seem a bit too long so I picked up a few different lengths and bolt head types from McMaster-Carr. Should I go w/ a stud/nut combo instead?

I think if you're running the stock manifold the OEM bolts should be fine. You could run this in addition: https://store.034motorsport.com/k03-...ng-flange.html

**BumblebVR6** · 03-30-2017 06:55 AM

Originally Posted by SleeperAvant

I think if you're running the stock manifold the OEM bolts should be fine. You could run this in addition: https://store.034motorsport.com/k03-...ng-flange.html

Going to run a BEX manifold. I believe that locking flange will only work on the 034 or Frankenturbo style, flat top manifolds. I did pick up some Norlock washers that I will probably install.

**Seerlah** · 03-30-2017 08:47 AM

Try ARP hardware. People have had success using these bolts. You can pick them up on summit racing. Just order the correct size.

**BumblebVR6** · 03-30-2017 09:02 AM

Originally Posted by Seerlah

Try ARP hardware. People have had success using these bolts. You can pick them up on summit racing. Just order the correct size.

I plan to if I ever have issues w/ the ones I purchased from McMaster. I got some pretty beefy bolts there. Just need to do a test fit and see which length I need.

Something like this should work if the time comes: https://www.summitracing.com/parts/a...1006/overview/

**Seerlah** · 03-30-2017 09:20 AM

Yes, but they will not be m10x1.5. That is the size for t3 flanged manifolds.

For anybody reading this, you can source just about any sized ARP bolt on Summit Racing, in case you didn't know. Just check the boxes for the specs you want and save some cash.

https://www.summitracing.com/search/...rder=Ascending

**Siggiepop** · 03-30-2017 09:25 AM

not that I need any of these parts but i'll bookmark the links for reference

My trackspeed is still holding up

**BumblebVR6** · 03-30-2017 09:37 AM

Originally Posted by Seerlah

Yes, but they will not be m10x1.5. That is the size for t3 flanged manifolds.

For anybody reading this, you can source just about any sized ARP bolt on Summit Racing, in case you didn't know. Just check the boxes for the specs you want and save some cash.

https://www.summitracing.com/search/...rder=Ascending

I could have sworn the stock K03 as well as the eliminator turbos are threaded for 10x1.5.