Need torque specs for arp head studs 716 nonturbo tech. Apply arp moly assembly lubricant to seating face of bolt and threads of bolt and rod. Further, there is a significant difference between the long and short cylinder head bolts or studs on the same head. Dec 23, 2010 im planning on removing my ud pulleys and replacing them with stockers on my cobra. All pro series bolts are coldforged to ensure molecular integrity, heattreated prior to thread rolling and machining, and are rated nominally at 200,000 psi. If youre not using our specs and our lube, you have no real idea what preload youre getting. Arp high performance series flexplate bolt kits 1002901.
Installation method for head stud kits 200,000 psi 12 inch diameter 1. Ball joint bolts and torque specs toyota 4runner forum. A packet is included with all arp fastener kits assembled by xks unlimited. Apply arp ultra torque to fastener threads and the underhead of the bolt or underside of the nut. Arp torque specs chevy message forum restoration and. Torque specs these specs may not be correct for your application. The torque values can only be achieved if nut or tapped hole has a proof load greater than or equal to the bolt s minimum ultimate tensile strength. Lug nut torque of 100 ftlbs for race cars on arp extended. Welcome the arp store, a division of titan motorsports dedicated to the arp brand. The individual retaining bolts will more than likely have at least one torque spec, but maybe even multiple or different ones per bolt.
If so, did arp happen to mention anything about manufacturing dates or batch numbers. The torquestretch number listed for my aftermarket connecting rod is different than what arp calls out for the same bolt. Arp head studs, main studs, rod bolts torque and stretch specs. I am wondering if there is a way to know if mine are from the same batch as yours. Listed here are the general torque recommendations for most arp fasteners. Recommended torque is equal 75% of the fasteners yield strength.
I have new arp bolts and will use them in the next couple of days. Underhead length, thread length, undercut diameter and length, and shank length all play an important role in the dimensional stability of the bearing housing. Since these are not tty bolts, is this ok to torque them to 65 ft lbs in a single stage. Just need torque specs for starter motor bolts my car has 90 miles. Does anyone know the correct torque setting for the arp head studsbolts. Some customers may choose to install the bolts at the factory torque specifications without align honing the block but they. Since i do not reuse head bolts, i take a screw driver, put it on the top of the bolt, tap it to make an indentation, and then torque it 90 from there. Sep 14, 2004 hi, i had a set of arp rod bolts installed and i got all the parts back from the machine shop, but i didnt get any info with them as to what to torque them to. These starter bolts are made from arp stainless, a 100% maintenance free stainless steel material that is stronger than grade 8 hardware and tough enough to easily withstand the strain of a 10 to 15 pound starter cantilevered off the back of an engine. The prices listed on this website are for estimating purposes only. All of our compstar hbeam connecting rods use arp 2000 bolts designed specifically for the rod they are installed in.
Dec 02, 2008 i need the bolt torque specs for a 2002 chevy 8. Remove any old grease from threads of bolts and rod. Fwiw, my machinist wont use arp bolts and studs on the rover engines. To ensure proper thread engagement and accurate torque readings, clean all threads in the block. Arp provides torque specs for our fasteners based on using arp ultratorque. Loosen first bolt, zero stretch gauge, tighten until correct stretch is. Arp provides torque specs for our fasteners based on using arp ultra torque. Connecting rod bolt information callies precision engine. Please check with your arp dealer for actual pricing. My arps i torque to 75 foot pounds, following the factory order from the center out, and in passes of 25 foot pounds each timegte. There are three methods that can be employed to determine how much tension is exerted on a fastener. Make liter cid engine model year rod torque main torque cylinder head bolt torque allis chalmers 1. It has been suggested that torque angle is a relatively simple and valid procedure to use in our blind installations where it is not possible to physically measure the actual bolt stretch.
Warning if you are using arp bolts, you must use their specs. All, been searching the net and cannot get a clear answer. I just got a set of arp head bolts 1543601 and will be using fel pro 9333pt1 head gaskets with e7 stock heads. To answer the question on how much to torque the bolts to achieve proper preload and therefore stretch i would need to know what bolts they are and the uhl under head length. Does anyone know the correct torque setting for the arp head studs bolts. Bolts arp recommends the use of main studs over bolts whenever possible for several key reasons. Most often, though, car owners choose to put them on when they perform car maintenance. I have to torque spec for the arp head bolts which came with the bolts.
Tighten the 8mm bolts in sequence to 25 ftlbs with arp ultra torque fastener assembly lubricant. Example, a water pump that bolts to a timing cover will have long and short bolts. The calculation of those values is solely up to the rod manufacturer. If you need replacement connecting rod bolts, they can be purchased directread more. Actually ive found them in quite a few places, but all the suggested torque settings have been diferent ranging from 43ftlb to 65ftlb. Apply the right amount of torque to each arp bolt and stud. Arp head bolts for after market ford aluminum heads like the flotech. Torque value lookup fastener installation faqs fastener metallurgy identifying fastener failure causes. Arp recommends using the proper torque sequence, but to torque the bolts with washers to 65 ft lbs using their assembly lube. After studs 110 have been torqued to ftlb, torque them to 175 ftlb in the proper sequence. They are far superior to oem fasteners in terms of durability and service life, and are fully capable of handling the extra. Anyone know what i should torque them to, my fe book lists several different specs, so i have no idea which one if any are correct. Page 4 torque specs and clearances cad company online.
Torque specifications for arp fasteners xks unlimited. Car manufacturers sometimes use them when building the engine. Arp bolts and studs are a brand of aftermarket screws used to fasten and secure different parts of an engine. Clamp load calculated as 75% of the proof load when specified by the standard.
Once studs 110 are torqued to 175 ftlb, apply a small dab of engine oil to the threads of the existing bolts for locations 1115. At the time, there were no commercially available studs and bolts up to the challenge. Im planning on removing my ud pulleys and replacing them with stockers on my cobra. Nov 19, 2010 this is information that you can never find when you need it so here is a table for the arp head studs, main studs, and rod bolts torque specifcations and stretch specs. If the bolts are 10 mm in diameter and are grade marked 10. The torque values represented here are intended to be for general information only, not for specific installations. Its called torque to yield, its gay, but what can you do. Clicking this will make more experts see the question and we will remind you when it gets answered. There are no gimmicks like deferred interest or hidden fees, so the total you see at checkout is always what youll actually pay. The official arp web site technical information arp bolts. Arp torque specs for rod bolts 332428 ford fe engine forum. Hi, i had a set of arp rod bolts installed and i got all the parts back from the machine shop, but i didnt get any info with them as to what to torque them to.
Its for an early headed 355 if that makes any difference. Apr, 2006 yeh those connecting rod specs must be wrong because i torqued them to 23ftlb and tried turning over but it didnt budge, was so tight that i ended up loosening the harmonic balancer bolt, can someon give me an accurate connecting rod torque spec for a y8. Outside the united states, the prices may be higher due to transportation costs and import duties. The r55, r56, r57, r58, r59, r60, r61, mini cooper and mini cooper s. Bolt torque there are many grades of cap screw style rod bolts from a1 just like arp. Arp 2543708 ford 302 w 351 windsor aluminum cylinder heads. Why you should set a lug nut torque of 100 ftlbs on a track or race car while running stronger extended wheel studs such as arp wheel studs. To achieve optimum accuracy, always use arp ultra torque fastener assembly lubricant whenever possible. While i had it apart i was going to replace the tty bolt with an arp crank bolt. Arp 2543708 ford 302 w 351 windsor aluminum cylinder. Eagle rods are offered with a variety of different bolts.
So if anything, you undertorqued them and didnt get adequate stretch on the bolts, along with out of round housing bores, this was the likely cause of. They all cant be right if someone could give me the exact torque specs for this application it would be appreciated. Hence, arp lube youd torque to 81ftlbs, where as if using 30w motor oil youd torque to 105ftlbs. Find torque and stretch specifications and instructions for your crowerods here. Connecting rod bolt torque specifications crower cams. Arp bolts also dont torque to stock specs, they have a higher torque value because they are of a much higher quality steel than the stock rod bolts. Manufacturer of fasteners found in engines and drivelines, ranging from oem replacement parts to specialty hardware for racing applications.
Click here for proper torque specs for rod bolts callies. Does anyone know the torque specs for arp head studs cheers. Arp rod bolt kit small block chevy lsseries 2346301. O need the torque specs for sep 12 point main studs and rod bolts. The bolt shop owner seemed to think the oem bolts were of a lesser quality than the 8. Arp 1076001 mitsubishi torque specs free download as pdf file. Need torque specs for arp head studs 716 from afrs web site for ford small block.
What is the correct torque spec for arp headcylinder stud bolts. Usually, if a vehicle is heavier, or extreme stress is placed on the hubs, the specification might be higher. These bolts are forged from aerospace alloy and heattreated prior to thread rolling and machining. Arp 1076001 mitsubishi torque specs nut hardware screw. Arp high performance series flexplate bolts are far superior to oem hardware. Connecting rod bolt specification, steel connecting rods, titanium connecting rods. Unless otherwise specified, all figures assume use of arp moly lube on all threads. Clean and inspect all hardware prior to installation.
The long bolts that go into the engine block will have a different torque values then the short ones that thread into the cover. Since it isnt i assume a tty bolt, what should i torque it to. I believe you do not follow the standard subaru head bolt procedure, but want to be sure, the correct sequence would also help. Weve done the testing where we can measure the torque applied and the resulting preloads. This is what was written in the instructions that came with my last head stud. If you do employ the torque angle method, its best to begin calibrating rotation from some small measured torque rather than the first point of contact with the work face. Proper bolt torque is paramount to rod strength and life. So holzapfel called upon his many years of fastener making experience for a leading aerospace subcontractor and founded arp automotive racing products.
First is the ability to obtain more accurate torque readings because studs dont twist into the block. This is information that you can never find when you need it so here is a. Arp has conducted extensive evaluations of the torque angle method. Apply arp ultratorque to fastener threads and the underhead of the bolt or underside of the nut. Aera torque specs 500 coventry lane, suite 180, crystal lake, il 60014. Recommended torque to achieve optimum preload clamping force using arp ultratorque fastener assembly lubricant. Apply molyoil mixture to washers, and area around head bolt to prevent galling and improper torque readings.
This is a discussion on arp torque specs within the internal engine forums, part of the lsx technical help section category. Also your torque values with motor oil will be higher than if you are using the arp lube. These 12 716 stepped bolts feature a 12 point head and are intended to fit small block ford 302 applications with 351 windsor cylinder heads. The back of the arp box has one thing, waynes rebuild book has another and my 993 factory manual has something totally different. Im refreshing my motor but lost my instruction sheet, what are the proper torque specs for callies rod bolts. Use torque wrench to install fastener to the torque value from the chart below. Arp s torque converter bolts provide optimum grip and eliminate the problem of shearing a bolt after the install. I did order the gm thread lock sealant for the other bolts. I keep thinking no loctite since i am working with aluminum, but not in this case. Torque values for 14 and 516in series are in inchpounds. If youre not using our specs and our lube, you have no real. Enter your kit number in the field below and click submit.
Click here to download a printable rod bolt stretch monitoring chart. Use arp ultratorque fastener assembly lubricant to lubricate the threads of the bolt and the under head of the bolt. They are both heattreated prior to thread rolling and machining, feature an exclusive, flat, 12point head design and larger than stock shank diameter for increased strength and improved flywheel register. Click the links above to download the most current browser. These bolts are super strong, rated 190,000 psi and are designed for each specific application. It is also available separately under part number 171679. Looks like i cant attach a pdf but you can easily download it off their web. Arps torque converter bolts provide optimum grip and eliminate the problem of shearing a bolt after the install. I am just used to the multiple step torque specs on stock bolts. Eagle has arp custom make bolts to our specifications. If you are using arp bolts, you must use their specs. This is what was written in the instructions that came with my last head stud kit. I may end up using the oem bolts supplied but now i wonder if 59ftlbs is too high and if i. They feature an exclusive, flat, 12point head design and a largerthanstock shank diameter for.
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