ARP Head stud Torque spec? 30-60-90?

[GSTurbo1]

Ok guys what torque spec would you guys recommend for the 420a turbo? I would like to do like a 30-60-90--->100ft/lbs but that is probably too much just want to make sure she stays sealed. I'm going to be apply arp torque molly to threads of bolts, each side of washer and top threads.

I keep trying arp site but just keeps giving me the aw snap, crash page

 

[david-b]

Ok guys what torque spec would you guys recommend for the 420a turbo? I would like to do like a 30-60-90--->100ft/lbs but that is probably too much just want to make sure she stays sealed. I'm going to be apply arp torque molly to threads of bolts, each side of washer and top threads.

I keep trying arp site but just keeps giving me the aw snap, crash page

I used to do the 30-60-90. Make sure you do it in the proper order though or it won't seal. Never had an issue with the head not sealing properly with doing it that way.

 

[99gst_racer]

What's the part number on the kit you have?

I used to do the 30-60-90 then an extra 1/4 turn.

Wow, that's a boatload of torque with a 1/4 turn past 90 ft/lbs. What diameter are 420a head studs?

 

[GSTurbo1]

I used to do the 30-60-90 then an extra 1/4 turn. Make sure you do it in the proper order though or it won't seal. Never had an issue with the head not sealing properly with doing it that way.

Will the proper order be in my haynes manual?

 

[GSTurbo1]

not sure about the diameter i'll have to check when I get home

 

[glowryder]

30-30-60-60-60-90-90-90. Done.

Going 1/4 past is for TTY stuff. Just do the above in the correct sequence and your good to go.

 

[GSTurbo1]

And I just meant the pattern for tightening the bolt, which one I tighten first and so on in my haynes manual.

 

[glowryder]

Yes its in there. Make sure you check it 2x or 3x like I mentioned and your good to go. Also make sure you use the ARP lube. Lube the washers on both sides, the nuts and threads to get a consistant and accurate Tq.

 

[GSTurbo1]

30-30-60-60-60-90-90-90. Done.

Going 1/4 past is for TTY stuff. Just do the above in the correct sequence and your good to go.

done and done and done... thanks man

 

[99gst_racer]

ARP doesn't list a kit for the 420a Eclipse. Which kit are you 420a guys using?

 

[ed1380]

Will the proper order be in my haynes manual?

No. They only have stock torque specs. Anything arp you use arp torque specs

 

[CODE4]

arp doesn't list a kit for the 420a eclipse. Which kit are you 420a guys using?

141-4202

 

[BogusSVO]

Right from ARP website....

ARPinstructions.com | Kit Instructions and Torque Values

For ARP PN 141-4202

INSTALLATION METHOD FOR HEAD STUD KITS
Part Number: 141-4202 Application: Chrysler/Dodge 2.0L DOHC 4-cyl
1. Always verify the part number for your application with the part number on the side of box and the part
number on the instruction sheet. This will help ensure you have the correct installation procedure for
your specific application before installing any components.
2. Clean and inspect all hardware prior to installation. Look for obvious defects or shipping damages, plus proper
fit, length and dimension.
3. To ensure proper thread engagement and accurate torque readings, clean ALL threads in the block. Chase if
necessary with ARP Thread Chaser, part number 912-0005 (M11 X 1.5).
4. If the cylinder head studs protrude into a water jacket, lubricate the block threads of the studs with ARP
THREAD SEALER.
5. Screw studs into the block "HAND TIGHT ONLY".
NOTE: LOCTITE MAY BE USED IF A PERMANENT MOUNTING OF THE STUDS IS PREFERRED. THE
FASTENERS, HOWEVER, MUST BE TORQUED PRIOR TO THE LOCTITE SETTING UP.
6. Install the cylinder head(s) and check for binding or misalignment.
7. Lubricate the stud threads, nuts and washers with ARP ULTRA-TORQUE FASTENER ASSEMBLY
LUBRICANT. Then install the washers and the nuts onto the studs and tighten them hand tight. ARP
recommends using the ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT that is provided with
each kit as opposed to motor oil. This is due to higher friction on the studs as well as inconsistencies
in the clamping force of the fasteners when motor oil or other low quality lubricants are used.
PRELOAD (TORQUE) RECOMMENDATIONS
8. Following the manufacturers recommended torque sequence tighten the nuts in three equal steps to 85 ft lbs
with ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT.
Note: ARP Ultra-Torque Fastener Assembly Lubricant has been specifically designed to reduce tension preload scatter and
eliminate the need to cycle high performance engine fasteners before final installation. ARP Ultra-Torque far surpasses all
requirements offered by previous ARP lubricants in terms of fastener preload repeatability and performance lubricating
properties. For more information on ARP Ultra-Torque visit our website at ARP-bolts.com | The Official Site of Automotive Racing Products, Inc. or call 1 800-826-3045.
Bolt Torque Sequence

 

[glowryder]

FYI.. people have used up to 100 on the last tq setting. theres nothing worng with 30-30-60-60-60-90-90-90.. its proven. Just saying.

 

[GSTurbo1]

Right from ARP website....

ARPinstructions.com | Kit Instructions and Torque Values

For ARP PN 141-4202

INSTALLATION METHOD FOR HEAD STUD KITS
Part Number: 141-4202 Application: Chrysler/Dodge 2.0L DOHC 4-cyl
1. Always verify the part number for your application with the part number on the side of box and the part
number on the instruction sheet. This will help ensure you have the correct installation procedure for
your specific application before installing any components.
2. Clean and inspect all hardware prior to installation. Look for obvious defects or shipping damages, plus proper
fit, length and dimension.
3. To ensure proper thread engagement and accurate torque readings, clean ALL threads in the block. Chase if
necessary with ARP Thread Chaser, part number 912-0005 (M11 X 1.5).
4. If the cylinder head studs protrude into a water jacket, lubricate the block threads of the studs with ARP
THREAD SEALER.
5. Screw studs into the block “HAND TIGHT ONLY”.
NOTE: LOCTITE MAY BE USED IF A PERMANENT MOUNTING OF THE STUDS IS PREFERRED. THE
FASTENERS, HOWEVER, MUST BE TORQUED PRIOR TO THE LOCTITE SETTING UP.
6. Install the cylinder head(s) and check for binding or misalignment.
7. Lubricate the stud threads, nuts and washers with ARP ULTRA-TORQUE FASTENER ASSEMBLY
LUBRICANT. Then install the washers and the nuts onto the studs and tighten them hand tight. ARP
recommends using the ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT that is provided with
each kit as opposed to motor oil. This is due to higher friction on the studs as well as inconsistencies
in the clamping force of the fasteners when motor oil or other low quality lubricants are used.
PRELOAD (TORQUE) RECOMMENDATIONS
8. Following the manufacturers recommended torque sequence tighten the nuts in three equal steps to 85 ft lbs
with ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT.
Note: ARP Ultra-Torque Fastener Assembly Lubricant has been specifically designed to reduce tension preload scatter and
eliminate the need to cycle high performance engine fasteners before final installation. ARP Ultra-Torque far surpasses all
requirements offered by previous ARP lubricants in terms of fastener preload repeatability and performance lubricating
properties. For more information on ARP Ultra-Torque visit our website at ARP-bolts.com | The Official Site of Automotive Racing Products, Inc. or call 1 800-826-3045.
Bolt Torque Sequence

Thank ye guys... will hopefully have together tonight.

 

[99gst_racer]

141-4202

I suppose it would have helped to grab my current ARP catalog instead of my '09 catalog. Thanks for the part number!

 

[david-b]

Wow, that's a boatload of torque with a 1/4 turn past 90 ft/lbs. What diameter are 420a head studs?

You may be right on that and that being the TTY ones. I withdraw my 1/4 past statement on the ARPs. 30-60-90 for sure though. Sorry.

 

[Josh97eclipse]

My final tq is 90, I would not go past that because its pushing it. Follow the torqe spec sequence others are saying. I went 20/30/50/60/80/90 thats what slo2gen told me.

 

[TSIfreek]

I would not go above 85 FT lbs with 11mm standard ARP studs as your going to start over yielding the studs anything over that and then there junk. 30,60,90 is used for 6 bolt 12mm studs

 

[99gst_racer]

I agree with Kris. I'd keep it around 80-85 ft/lbs just like the 8740 ARP studs for the 7-bolt 4g63.

 

[GSTurbo1]

got the head on!!!! going to get some new camshaft seals!

 

[Diamond Star Werks]

I ended with 90 first time building my engine and this past time removing and reinstalling the head I did 55-75-90. I have no problems
I think the first time might have done 45-65(70)-90.

 

[Slo2gen]

I've used the 90 as well several times. It may be a tad over for an 11mm stud but I've reused the same ARP's for all 4 times the head came off my car when it was 420a and never had an issue. Granted if your using the ARP molly lube, you don't need to go that high, but if your using what ever oil that they recommend(I don't remember off hand) then the torque spec is a bit higher. I do think that anything over 90 is asking for problems, not saying people don't do it, I just wouldn't. The key to it is also doing it in steps, like mentioned above.

 

[LD25Delta9]

I'd go with stock spec of 85. That extra 5 lbs might not sound like much but I wouldn't want to take the chance. 28-58-85 has been my pattern for years with no problems, turbo build or not.

 

[bullettdsm]

I do 90's as a general rule. No problems. I did 95 on my turbo version and the 16 to1 motor. I'm comfortable with that.

MB