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-   -   Cam pulley bolts? (https://www.miataturbo.net/engine-performance-56/cam-pulley-bolts-37206/)

slowmx5 07-18-2009 04:46 AM

Cam pulley bolts?
 
Can anyone help me with the specs of the bolts which hold the cam pulleys to the camshafts? I'd like to replace mine with stainless steel or aluminium/titanium versions.

NA6C-Guy 07-18-2009 05:18 AM

..Why? I hope you don't just plan to go to the local parts store and buy a bolt and slap it on.

slowmx5 07-18-2009 06:39 AM

No, that's why I was asking the specs, thread, length, grade etc.

NA6C-Guy 07-18-2009 09:59 AM

But again I ask, why? Not trying to be a smart ass, but what will you accomplish?

slowmx5 07-18-2009 01:21 PM

My cam pulleys are uncovered. The stock bolts look tatty but, more importantly, I can not get the washer they sit on to locate centrally and it makes the pulleys look as if they are wobbling when the engine is running. Stainless steel or titanium bolts with a shoulder or tighter fitting washer would look better and not 'wobble'.

levnubhin 07-18-2009 01:33 PM

I can dig it, in for an answer.
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thesnowboarder 07-18-2009 02:13 PM

I can mail you an extra set, but i don't have the tools to figure out what the thread pitch is. Why not take one of them out and run down to a hardware store and compare? Thats what i generally do.

UrbanSoot 07-18-2009 04:53 PM


Originally Posted by thesnowboarder (Post 431908)
I can mail you an extra set, but i don't have the tools to figure out what the thread pitch is. Why not take one of them out and run down to a hardware store and compare? Thats what i generally do.

+1. thats what i usually do too.

slowmx5 07-18-2009 05:13 PM

You are quite right. I am installing an ATI damper in two weeks time - so I'll be able to pull the bolts then. I was hoping to obtain the bolt specs earlier than that so that I could just swap them over at that point.

Edit: Actually I've just had them mailed to me.Now to try and find something in stainless steel or titanium.

slowmx5 10-01-2009 03:13 PM

Done those titanium bolts when I finally got around to the ATI superdamper install (it's under that link)...

therieldeal 10-02-2009 08:08 AM

care to share the thread/length/etc specs for those bolts? i'd love to do the same when i finally buy some cams and put my adjustable gears on.

slowmx5 10-02-2009 05:41 PM


Originally Posted by therieldeal (Post 462672)
care to share the thread/length/etc specs for those bolts? i'd love to do the same when i finally buy some cams and put my adjustable gears on.

They are M10x1.25. 35mm long. 8 stamped on the head - so grade 8.8

I have put up links to the actual bolts and the washers I used on my website now.


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