HalferLand Performance
Honda V6 J-Series Chromoly Cylinder Head Stud Kit
(300-1000hp+)
*ARP2000 Equivalent Rating*
* FITS ALL J-SERIES MODELS EXCEPT Y's *
- DESCRIPTION -
* Note * Both the Nuts and Studs are double shot peened for added overall strength. Some customers have mistakenly thought they were imperfections in the parts, which they are not. If you do not know what shot peening is, please look it up online. We have taken every measure to ensure the highest quality and afford J-Series Stud on the market, which includes the shot peening process to all of our HalferLand Performance studs and nuts.
Well Guys/Gals, we had something in the works for over the past year and half (2022) and with COVID and limited supplies of just about everything, including good metals (even hardware stores are running out of Grade 8 bolts) it took some doing, time and mostly $$. We are proud to announce our HalferLand Performance Honda J-Series 8740 Chromoly Head Studs. They are slightly different then what you see on the market, with ARP 8740's (180,000psi rating) running around $320+ then add shipping onto that, and ARP2000's running $430+ (220,000 psi rating).....our HalferLand Performance Honda J-Series 8740 Chromoly Head Studs are 300-1000hp+ capable, 200,000psi rated MADE IN THE USA with our partner manufacturer that specializes in 2000+whp Diesel Performance engines so you know they can make a product to last. They are perfect not just for all high horsepower builds but also ANY rebuild, even NA 300whp or below setups. As you know, one major hurdle with any engine is a good cylinder head to block seal, regardless of power level. Stock head bolts are torque to yield, meaning once stretched to OEM torque specs that's it, they can no longer be used. Our HalferLand Performance Honda J Series Chromoly head studs are just that, Studs, which apply a higher clamping force opposed to bolts that twist down to tighten, with head studs the nut is what applies the directly downward pressure/clamping load, not a twisting pressure as bolts do. So even a NA 300whp build will benefit from adding our HalferLand Performance Chromoly Cylinder Head Studs. On top of that, they are also engineered to withstand 200,000psi of tensile strength or pressures, allowing for as much as 1000+HP.
~~~~ FEATURES ~~~~
- Perfect for all Mild to Wild builds, OEM Replacements, 300hp+ NA up to 1000hp Boosted Builds
- Rated to 200,000psi Clamping Load
- Nuts and Studs are Double Shot Peened for added strength
- Cold Forged from extremely resilient 8740 Chromoly steel
- Thread Rolled
- Black Oxide Finished to reduce binding when installing and prevent corrosion
- All kits include assembly anti-seize lube to prevent binding when torqueing the heads down
- Comes with everything needed to install.. all Studs, Nuts, Washers and Lube
- As all of our products, FREE SHIPPING
- AND AS ALWAYS WE GUARANTEE AND BACK THEM WITH OUR INDUSTRY LEADING (AND ONLY WE KNOW OF) 1YR WARRANTY ON ANY DEFECTS OR BREAKAGE UP TO 800CHP
- INSTALLATION -
- NOTE The beveled/flared course threaded end of the stud is down and installs into the block. The finer/thinner threading is up or the head/nut side.
- PRE-INSTALL - Clean all thread with a brush or cleaner to assure all dirt and debris is removed to prevent any sticking or binding when tightening, reassuring a proper torque reading
- LUBE - Be sure to use the provided thread torque lube on the top side (Allen Key side that gets the nuts and washer) threads to prevent binding during install..THE BLOCK SIDE THREADS CAN BE INSTALLED DRY
- TORQUE SPECS - Please adhere to OEM Torque specs. For higher horsepower setups or if you simply want a larger clamping load, you may torque over stock specs, according to your requirements and to our torque specs suggestions below. Additional torque added to the stud will have a multiplying effect to clamping load, so it doesn't take much. Studs alone with a directly downward clamping load already exceed oem bolts. Adding even 5 ft lbs over stock will far surpass OEM clamping loads for higher HP engines/Setups.
Please refer to the last photo in the listing for our HalferLand Head Studs Installation Torque Sequence/Steps and also our "Higher load setup" torque specs below.
- STUD INTO BLOCK - When installing the stud into the block (flared end down) you will see a allen key style hole to help with tightening (Allen key side up). It's important not to overtorque them. You should bottom the stud out into the block and then BACK OFF (yes, loosen) the stud 1/4 to a 1/2 turn out. Remember, unlike bolts the stud is getting it's clamping force from the nut directly downward. Fully tightening the stud into the block can lead to sticking over time making them difficult to remove (this goes for all brands of head studs) and if the stud moves during tightening you could run the risk of overtightening into the softer aluminum block causing damage. NOTE - IF THE STUD MOVES IN THE BLOCK DURING TIGHTENING/ TORQUING THE HEADS, ITS BEST TO LOSSEN AND RESET THE STUD IN THE BLOCK AND START OVER..THIS ENSURES A PROPER TORQUE PATTERN AND EVEN CLAMPING LOAD ACROSS THE ENTIRE HEAD.
HLP Products 8740
CHROMOLY HEAD STUD
TORQUE SPECS
Please
follow the OEM Torque Spec’s and Sequence when installing our HLP Head
Studs. Below you'll find our suggested torque specs based off of your setup. Please refer to your repair manual
for the torque sequence, torque specs and suggested range for our head studs is
below.
OEM Steps
= Step 1 = 29 ft lbs Step 2 = 51 ft
lbs Step 3 = 73 ft lbs
300-450whp
= Step 1 = 29 ft lbs Step 2
= 51 ft lbs Step 3 = 80 ft lbs
Beyond the 450whp torque specs, due to higher clamping loads extra
stud stretching may occur or cause for faster replacement times. Always check
stretch before re-using. This holds true for all bolt and studs, not just ours.
500whp-750whp
= Step 1 = 29 ft lbs Step 2 = 51 ft lbs Step 3 = 85 ft lbs
800-1000whp
and Up = Step 1 = 29 ft lbs Step 2 = 51 ft lbs Step 3 = 90 ft lbs
* RETURNS & ORDER CANCELING POLICY*
- ALL ORDERS ARE SUBJECTED TO OUR (1) MONTH (28 DAYS) RETURN POLICY (THIS EXCLUDES ANY PORT AND POLISH PARTS. PNP PART RETURNS/CANCELLING IS BELOW). WE OFFER A NO HASSLE RETURN POLICY ON ANY PARTS WITHIN THE FIRST (28) DAYS OF YOUR PURCHASE. ALL PARTS MUST BE RETURNED IN THEIR ORIGINAL CONDITION, PACKAGING AND NEVER INSTALLED. A FULL INSPECTION WILL BE PERFORMED UPON RECEIVING THE ORDER/PARTS BACK TO US AND IF DETERMINED THE PART WAS INSTALLED OR MODIFIED/DAMAGED THE RETURN WILL BE DENIED.
ALL REFUNDS AND RETURNS ARE SUBJECT TO A 3.5% CREDIT CARD TRANSACTION FEE. THIS IS DUE TO THE INITAL ORDER TRANSACTION FEE WE WERE CHARGED FOR YOUR ORDER, PLUS THE ADDITONAL REFUND TRANSACTION. THOUGH THERE ARE TWO TRANSACTION FEE'S CHARGED TO US, WE ARE ONLY CHARGING YOU FOR THE REFUND FEE.
- ANY PART RETURNED AFTER THE (28) DAY RETURN POLICY WILL BE SUBJECTED TO A 3% RESTOCKING FEE.
- FOR TUNING ORDERS, NO RETURNS ARE ACCEPTED UNLESS NO TUNING OR REVISIONS HAVE BEEN STARTED. AFTER OUR FIRST REVISION/TUNE IS SENT TO OUR CUSTOMER VIA EMAIL, NO REFUNDS WILL BE ALLOWED OR AUTHORIZED. THIS APPLIES FOR BOTH SINGLE SESSION (TUNE TILL RIGHT) AND LIFETIME TUNES.
- There are no returns accepted for any Port and Polish parts, due to the parts being modified and unable to be returned to their stock/original condition. There is no exception to this policy...EVER.
- If the customer selected to have HalferLand Performance source/provide a core part(s) and chooses to cancel their order prior to shipping or starting the modifications/porting, a 20% part cost restocking/sourcing fee will be assessed from the credit/return. Example, the core part provided cost $100, a 20% Restock/Sourcing fee of $20 will be deducted from the credit of the order. This is due to our cost to source, purchase, clean the part and now the order being cancelled, we now are forced to sit on the part with direct order being associated with it or that we can use it for.
- Order Cancelling may be done prior to the start of any modification or work and before shipping. If the parts modifications has already been begun or the parts has shipped, then the order cannot be canceled and will be filled/finished accordingly. If its a non PnP part and the order ships, the customer is responsible for returning the part/order using their preferred carrier. Our (28) Day Return Policy guidelines remain, parts must be returned in original packaging, never installed, modified or damaged.