Hey guys -

For years I've used the high-temp lock nuts from ATP Turbo, and before that got the same nuts from Rotary Performance in Texas. They work very well, hold tight, and don't destroy the studs the way the stock Mazda locknuts do.

I ordered a bunch from ATP recently to restock my supply and found they have changed suppliers. The nuts are 15mm in size instead of 14mm and don't have the copper lock ring at the top, they use a crimped-in design similar to Mazda's design. Bleh. BTW, I HATE putting fasteners on my car that use some weird size like 15mm .

So, I did some googling around, found this -

http://www.clipsandfasteners.com/M10..._p/pm33629.htm

That's the ones I've been using, and CHEAPER than I've been paying! Pack of 25 nuts is $12 and change, which comes out to around .50 cents a nut. That's the right size - m10x1.5 with a 14mm hex.

I have been using these type of nuts for easily 10-15 years, starting back on my FC. They really work well, don't kill the studs, are removable and many times re-usable. These nuts can be used for most of the turbo studs, the downpipe studs, and the manifold to block studs. On some of the connections I recommend adding a flat washer to increase the clamping surface of the nut.

Enjoy . I'm ordering a pack of them and I don't even need them .

Dale

 

awesome. i knew there had to be a supplier for these things!

i'm also ordering some even though i don't currently need any

 

Dale,

Thanks once again for a great find. For those that dont know from the factory these nuts are around $8.00 or so a piece.

 

A decent alternative to using locking/crimp/stover nuts are nord-locks, they are great for everything. They are used in military apps. Expensive, but they will make sure your fasteners will never come off.

 

I've NEVER had problems with these coming off, and they're super simple to install and they come off nicely too. Don't really see a good reason to run something more hardcore, especially as the stock fasteners are mighty hard to get to.

Also, the same company has the exact plastic fasteners Mazda uses on the fender liners, the push-in pins with the Phillips head screw in the middle. They were also VERY inexpensive. Saw them listed on the home page.

Dale

 

nordlocks wear out in my experience... the ridges actually flatten out. these work way better

 

yeah I recently checked out this site a little bit. They have a lot of random oddball stuff you find yourself needing to replace on an old car.

 

Nice find!

Regards,
Crispy

 

Thanks for the update Dale.

If I'm going to be removing my turbos that have the factory studs/nuts. Will I be able to reuse the studs or are chances quite good that the factory nuts will tear them up on removal? If so, is ATP still a viable option for replacement studs or do I need to sack up and pay for the factory parts?

 

I purchased the copper ones from pineapple racing for when I swap out my twins. They are $1/ea. These look like the same thing.

 

Thanks for the link Dale. Looks like a great source!

 

BTW my locknuts arrived Monday, I ordered them on Thursday. That's some quick damn shipping! I believe they shipped from Cali too, that's going to Florida.

They are exactly the ones I hoped, 14mm copper lock nuts. Get a bag!

Dale

 

Dale, do know if these are any different than the ones Pineapple sells?

http://www.pineappleracing.com/premi...xhaustnut.aspx

 

Great find Dale

 

im soo glad i found this tread again, turbo hardware, bolts and nuts are hard to find in 14mm there usually offered in 17mm heads

 

Good timing

 

I've used these on a few cars now, they work wonderfully with no problems. I highly recommend. Price is right too!

Dale

 

timely info for me as well.. now to find stud replacement..

 

I used these on the down pipe and they backed off which is forgivable since they have been on my car for 1 year and my presilencer hits everywhere I'm going I buy more of these soon

 

Interesting that they are copper-plated steel . . .

:-) neil

 

now if I could find bolts to pair them with...

 

Does anyone know where to get similar locking nuts in Standard 3/8-16 size?

 

Eric did you try ATP turbo in Hayward?

 

Good info thanks

 

Does this work for the S5 and S4 turbo's