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Engine Specific Info and Questions => TDI Engine -General Info => Topic started by: smiffie88 on April 18, 2010, 12:47:57 pm

Title: ARP head bolt torque
Post by: smiffie88 on April 18, 2010, 12:47:57 pm

i know this has probably been asked a hundred times before but what torque are people doin arp heads bolts to? its got a steel head gasket that was changed about 1000 miles ago and its gone already. im getting massive amounts of pressure in the coolant system thought the head might have lifted as all the surfaces were clean and flat.

Title: Re: ARP head bolt torque
Post by: redneck_vdub on April 18, 2010, 01:19:10 pm

i recommend ARP head STUDS.
stage 1- 30ft-lb
stage 2- 44 ft-lb
stage 3- additional 90 degrees
stage 4- another 90 degrees

Hopefully this is helpful to you.

Title: Re: ARP head bolt torque
Post by: rabbitman on April 18, 2010, 01:57:57 pm

Quote from: redneck_vdub on April 18, 2010, 01:19:10 pm

i recommend ARP head STUDS.
stage 1- 30ft-lb
stage 2- 44 ft-lb
stage 3- additional 90 degrees
stage 4- another 90 degrees

Hopefully this is helpful to you.

You sure that torque sequence isn't for the stock bolts???? I've never heard of stretching ARP studs.

Title: Re: ARP head bolt torque
Post by: smiffie88 on April 18, 2010, 02:06:11 pm

yeh that does sound like the torque sequence for stock bolts

Title: Re: ARP head bolt torque
Post by: redneck_vdub on April 18, 2010, 04:28:44 pm

yes that is the torque for the stockers. My mistake.

Title: Re: ARP head bolt torque
Post by: theman53 on April 19, 2010, 06:02:52 am

100ft/lbs should seal and give you a little more room for error. I think 53 willy's did 110ft/lbs and no issues with breaking.

Title: Re: ARP head bolt torque
Post by: blackdogvan on April 19, 2010, 08:44:13 am

every time this thread happens I say the exact same thing!  WHAT LUBE??!! The ARP moly shloob decreases static & dynamic friction within the fastner significantly more than motor oil or other lubes. What chould be well over 100ftlb with motor oil will be in the 80ftlb range with the arp lube & get the same clamping load. Do the oil torque with moly & you run the risk of taking your studs into yield.

PS there are new bastardized cummins studs available for us that are significantly stronger than the cosworth PN we've all been using for years. Kermatdi has them.

r

Title: Re: ARP head bolt torque
Post by: theman53 on April 19, 2010, 08:47:18 am

yeah I meant 100 ft/lbs with the ARP lube...wily's did the 110 with it as well.
I believe with this diameter stud yeild is around 130ft/lbs with their lube...you want to be around 80% or less of that.

Title: Re: ARP head bolt torque
Post by: rallydiesel on April 19, 2010, 11:37:20 am

ARP just came out with some new studs specifically for vw diesels. New torque is 125 lb/fts.

Part # is 204-4706

Title: Re: ARP head bolt torque
Post by: truckinwagen on April 19, 2010, 11:38:37 am

were did you get that part number?

Title: Re: ARP head bolt torque
Post by: rallydiesel on April 19, 2010, 12:09:37 pm

mjmautohaus.

Title: Re: ARP head bolt torque
Post by: smiffie88 on April 21, 2010, 01:25:44 pm

yeh should of said arp moly lube i was thinking of around 100lbs/ft so ill go with that

cheers for the advice chaps

Title: Re: ARP head bolt torque
Post by: oldpoopie on May 11, 2010, 11:32:29 pm

cheapest place to get these new ARP studs is www.nicktane.com (http://www.nicktane.com)

Title: Re: ARP head bolt torque
Post by: oldskool rich on May 18, 2010, 03:33:54 pm

please post a video of ur car pissing on an evo 8)