[Fot] Spitfire head torque

[Chuck Gee]

Yes, 60 is the number if using regular oil.

Chuck

On Apr 15, 2013, at 11:00 AM, "Robert MacKenzie" <list at mackenzie.aero> wrote:

> Just to clarify; I do re-torque again after the engine is run and cooled.
> If I recall correctly I was given the 60 lbs figure from ARP.
>
> Robert
>
> -----Original Message-----
> From: Chuck Gee [mailto:chasgee at aol.com]
> Sent: Monday, April 15, 2013 10:07 AM
> To: Robert MacKenzie
> Cc: Tim Pettenati; <fot at autox.team.net>
> Subject: Re: [Fot] Spitfire head torque
>
> Just keep in mind that if you use the ARP lube the recommended torque is 40
> ft-lbs.  Also, if you tongue them hot you will be relieving the stretch
when
> the motor cools down.  This is not a good thing.  Proper stretch is what is
> important.
>
> Chuck
>
> On Apr 15, 2013, at 7:48 AM, "Robert MacKenzie" <list at mackenzie.aero>
wrote:
>
>> Tim:
>>
>> I have been using 60 ft/lbs on my 1147s with ARP studs/nuts and a
>> Payen gasket.  I pull to 60 with 3 pulls of 20, 40, then 60.  I let
>> the head sit overnight (cold) then retorque to 60 again.  Since
>> following this process I have had no issues with head gaskets.
>>
>> The ARP numbers for the studs are:
>>
>> Head Stud - AJ 4.250-1SFB
>> Nut - AJN 12-1
>> Washer - AJW 750N
>>
>> They can be ordered from Summit Racing along with the 10 stud 1500/1296
> kit.
>>
>> Robert MacKenzie
>>
>>
>>
>> -----Original Message-----
>> From: fot-bounces at autox.team.net [mailto:fot-bounces at autox.team.net]
>> On Behalf Of Tim Pettenati
>> Sent: Saturday, April 13, 2013 10:41 AM
>> To: fot at autox.team.net
>> Subject: [Fot] Spitfire head torque
>>
>> Checking on what folks are using for torque spec on head nuts?
>>
>> 1147cc
>> Spitfire with studs upgraded to 7/16" ARP and Payen gasket.
>>
>> Also if anyone
>> knows what the ARP partnumber is for the 7/16" studs.
>> I'm guessing they are
>> the same as the GT6/TR6 kit but would like to know for sure.
>>
>> Thanks,
>> Tim
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