Non stretch head bolts

[chris120391]

So apparently eurospec no longer carries non stretch head bolts for our cars. Anyone know where I can get non stretch head bolts?


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[christianb5s4]

I ordered my ARP head bolts from JHM, was $385. Not sure how much Eurospec charged for the ones they carried.

[DieselElectric]

Aside from the ability to reuse them, why not just run oem?

I've never read of an issue with stock head bolts.

[zillarob]

I ordered my ARP head bolts from JHM, was $385. Not sure how much Eurospec charged for the ones they carried.

Bout 1/4 of that.

[chris120391]

Aside from the ability to reuse them, why not just run oem?

I've never read of an issue with stock head bolts.

If I can't find them, I'll run OEM. Looking to build a high HP capable motor and figured eurospec head bolts would be ideal but believe head studs are still over kill.

On that note, Victor Reinz, Elring, febi or actual "Genuine VW Audi" brand head bolts?


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[themadscientist]

Go away Christian nobody likes you.

I just thought this over again in the context of what we talked about earlier and what your goals are with the build. I would drop the extra coin on the studs. With the level you're taking it to, you're probably going to be pulling the heads off, or the engine apart, a lot more than you realize. More power - more breaky break. The stretch bolts will hold, but they are one time use, and that will add up over time. No one plans on shit going sideways, or flipping onto it's roof on the freeway, but it happens.

[DieselElectric]

We talking likely block cracking territory?

If yes, then yea I would probably go head studs just to minimize cost in the future.

That said, keep a record of lengths so you know when to toss em.

[chris120391]

We talking likely block cracking territory?

If yes, then yea I would probably go head studs just to minimize cost in the future.

That said, keep a record of lengths so you know when to toss em.

Looks like head studs it is lol


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[MacDaddy]

You could go to a bolt supplier or look online, find the thread pitch and length and buy something with a higher tensile strength, i did that with my BMW 318i, stock bolts are 8.8 and i put in 12.9, torqued it all down to 75ftlbs in 25ftlbs increments (e30 m3 spec) and it worked like a charm.

Some info on metric bolt tensile strength:

http://www.engineeringtoolbox.com/st...es-d_1428.html

[zillarob]

Did you call them? I see them listed still.

[QuinnsterKID]

Go away Christian nobody likes you. No one plans on shit going sideways, or flipping onto it's roof on the freeway, but it happens.

lololol

[QuinnsterKID]

Looks like head studs it is lol


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I told you christian haha Head stud that shit! You'll blow a gasket before you lift a head.

[NOTORIOUS VR]

You could go to a bolt supplier or look online, find the thread pitch and length and buy something with a higher tensile strength, i did that with my BMW 318i, stock bolts are 8.8 and i put in 12.9, torqued it all down to 75ftlbs in 25ftlbs increments (e30 m3 spec) and it worked like a charm.

Some info on metric bolt tensile strength:

http://www.engineeringtoolbox.com/st...es-d_1428.html

No offence, but that's just ghetto. The E30 guys did that with "Metric Blues" but that's just because they were too cheap to fork over $300 for a proper set of head studs.

ARP offers a solution for these motors, if the OP is doing a high performance build ARP fasteners are the way to go.

[julex]

I don't understand why ARP is so expensive. I used set of Eurospec stuff a while ago and it works fine. As a matter of fact, the head bolts paid for themselves couple times over years as I definitely had heads off couple of times since then.

[redline380]

Keep in mind even non-stretch bolts have a usable life. They can only be torqued and retorqued so many times. However, if you are running into that problem you have built a shitty motor if it needs to come apart so many times

[NOTORIOUS VR]

I don't understand why ARP is so expensive. I used set of Eurospec stuff a while ago and it works fine. As a matter of fact, the head bolts paid for themselves couple times over years as I definitely had heads off couple of times since then.

We all know price is dictated by market...

I don't know what bolts from Eurospec you guys are talking about (just tried to google images) and from what I see they're just normal bolts (probably locally sourced higher grade hardware) and not actual studs which is a big, big difference in how the fasteners work.

That would be a real difference if so.

[christianb5s4]

You guys are lucky my quote and multi-quote isn't working right now, savages.

[DieselElectric]

Keep in mind even non-stretch bolts have a usable life. They can only be torqued and retorqued so many times. However, if you are running into that problem you have built a shitty motor if it needs to come apart so many times

Thus the comment about taking measurements with a mic before initial use, and after every re-use.

ARP includes paperwork and acceptable stretch limits to monitor wear throughout their life. At least they did on the last set I purchased.

[MacDaddy]

No offence, but that's just ghetto. The E30 guys did that with "Metric Blues" but that's just because they were too cheap to fork over $300 for a proper set of head studs.

ARP offers a solution for these motors, if the OP is doing a high performance build ARP fasteners are the way to go.

He asked and i gave him an answer.

Its not like audi makes their own bolts, and im not talking about bolts made in china either. ARP stuff is nice (ive used it before) but lets be honest, its overkill and most people install it half assed or dont use it to its full potential.

[NOTORIOUS VR]

He asked and i gave him an answer.

Its not like audi makes their own bolts, and im not talking about bolts made in china either. ARP stuff is nice (ive used it before) but lets be honest, its overkill and most people install it half assed or dont use it to its full potential.

Right, I know why you did it... I was just giving a little more context... Wasn't a jab at you for going that route.

[MacDaddy]

I wasnt even mad! Lol

[tasinb5s4]

OEM they around 100$ for set .

[QuinnsterKID]

ARP is trusted in pretty much every car/truck scene. I went with nothing but ARP on my mustang build, from oil pan and water pump bolts to heads and rotating assembly. Its better to be safe than sorry. Also, if you call them they can match any bolt you may possibly need and you can buy them individually directly from them. Very knowledgeable guys over there.