Cylinder Head Bolts vs Cylinder Head Studs - Summit Racing Quick Flicks

[@dewaynebraley2820]

I want to say I do nothing more than appreciate the easily explained guidance , These videos are saving my tail ..Im a carpenter so , I need all the help I can get..thank you buddy

[@reeflx7199]

You can easily remove studs as well if still in the car. If you have ARP studs they provide you with an Allen socket at the top so you can run the stud out easily using an Allen wrench.

[@hectorortega9131]

exactly..

[@curtthompson2787]

While watching this I realized that you could use studs if you have a block that has head bolt holes that are not blind causing you to have to use thread sealer. With bolts, if you want to change or service your heads or change head gaskets you have to clean the threads on all of those head bolt holes. With studs you wouldnt have to. I'm in this situation right now, just had to do this clean up, might change heads in the future, so I might look at getting some studs that can stay in the block.

[@SummitRacing]

Hi Curt! Let us know if you need any assistance! Thank you for watching.

[@w41duvernay]

If you think you may be taking heads on and off the short block, studs would be advised. If you are pretty sure you will be leaving on your cylinder heads on your block, head bolts would be advised. I have had to take off my cylinder head multiple x from my Quad 4, studs have had paid for them selfs.

[@speed150mph]

I have to disagree on "always lube up the bolts to ensure good torque." That is absolutely incorrect. You follow whatever the manual or instructions say. If your using stock bolts and chevy says torque them to 20 lb-ft dry, then don't lube them. If ARP says torque them to 50 Lb-Ft with engine oil or anti seize or their lube. Then use what they say. Just as long as you follow the spec.

[@767dag]

Sorry but all values are given implied wet tq unless stated dry tq ... that’s a standard

[@GettinJunkDone]

Nice video...better belt buckle.

[@axlegrind4212]

he left out the most important aspect of using a stud over a head bolt. *You get more clamping force on the head gasket from the mechanical advantage of the fine threads*. also if you're going to torque plate hone the block use the same type fastener because the extra clamping force of the studs preloads the block different than bolts.

[@rogerramjet5092]

I would agree with most of what he had to say but fallow your fastners torque recommendation and ask what lube to use. ARP has a different torque for eng oil vs their assembly lube. THE reason the reduced friction of their ass. lube means you reach the fastener stretch at a lower torque setting than with eng.oil

[@177SCmaro]

Did you just say "ass. lube"? I think you meant assy. lube. Sorry, I don't normally go around correcting people but "ass. lube" is pretty funny. Made my morning. lol

[@davidegeaudreau9246]

We had trouble with coolant leaking into the valve cover area, with studs. what could be the reason?

[@gdlonborg]

Educated guess: It sounds like the threads did not get any thread sealant, where the hole is open at bottom to the coolant passages. Simple solution, remove and replace the studs with thread sealant before reinstalling. Not sure, but that may be the solution. Also, I'd remove them one at a time, but untorque them all in the proper sequence first, remove one at a time in any order, seal threads, reinstall, retorque in the proper sequence. Hope it works out.

[@Jgarage5]

What does everyone think about chinese eBay stud kits for $45? I think my 70s era sbc is bored .30 over with a slight cam. I dont know what kind of heads are on there yet. ARP bolts or chinese studs?

[@StephenGiovi]

On my Generation I block, some torque specs say to torque the heads to 75ft./lbs. while others say to 80ft./lbs. My question is whether to use more torque, say 100ft./lbs, when using head studs on my Chevy block?

[@SummitRacing]

+Stephen Giovi, When using aftermarket fasteners such as head studs, the fastener manufacturer will have a specific torque spec and thread lube to be used.

[@StephenGiovi]

Thanks for the info.

[@dynodon100]

Do not forget to lube BOTH sides of the flat washer that goes on before the nut, or your torque will be off.

[@75msmyra]

Arp anything is good I've never had any problems with bolts unless it's a turbo or supercharged application and obviously in diesels

[@swappedoutZ71]

Myra Martinez are you a gearhead Myra? Thats awesome!

[@martureomartureon3269]

Couldn't one determine the running torque on the bolt and then add that to the final torque for the bolt? Using studs doesn't erase the running torque problem (what you described as "horizontal force").

[@SummitRacing]

+Martureo Martureon , Running torque is the measurement that determines the amount of torque a rotating part requires to remain rotating at a constant speed once it begins spinning. Since the average builder doesn’t possess the proper equipment to measure this and should only be using clean, straight threads with a lubricant, one could pad their torque spec by a few pounds safely in order to rest peacefully.

[@ggonzalez3181]

Thank you for the video and your time 👍🍺😎. Question ! I have a 2004 chevy suburban with the 5.3 engine. I'm working on the engine and I would like to buy the head studs. Do I have to do the 30,60,80 using the head studs??

[@kermets]

How do you use torque assembly lube But at the same time needing a sealant to seal the bolt in the water jackets from water interning the engine.......you cant use both therefore torque setting will be incorrect

[@rustyretired]

So which would be better for a turbo application, studs right? And where can i find the studs for my engine? I checked arp and my engine wasn’t listed for studs

[@SummitRacing]

We would need to know what engine you’re working with. Follow this link and use the filters on the left column to choose your application. Cylinder Head Studs. If you're having trouble finding them, give us a call @ 1-800-230-3030. www.summitracing.com/search/part-type/cylinder-head-fasteners?SortBy=BestKeywordMatch&SortOrder=Ascending&keyword=cylinder+head+studs&N=part-type%3acylinder-head-fasteners

[@rustyretired]

@@SummitRacing I can’t call, but i have a 2005 chevy colorado with I believe a 2008 motor in it, the motor is a 3.6l inline 5, and when i click the left column to filter for my vehicle, the colorado isn’t even a option

[@frankjmartin1411]

My 60 Chevy motor needs the 155mm head bolts. No one seems to have them or know what or where to find them

[@dieselduster]

I have a 70 LT1 sbc cast block with a set of performance world aluminum heads, what torque sequence should I use, I have 11.1 compression, and intend to use arp studs

[@SummitRacing]

You will start in the middle and work your way out in a criss-cross pattern. Make sure you torque the studs in 3 equal increments (start low around 35 ft lbs) up to the final torque spec that ARP recommends for the stud kit you get.

[@djmorgan8783]

I'm going to be buying a lq9 block somebody mentioned to me using studs in that block will distort the cylinder bore?

[@SummitRacing]

Dj Morgan , Any fastener type, whether it be a stud or a bolt distorts the bore to some degree when torqued to spec at final assembly. That’s why any high performance machine shop will use something called a deck plate when boring and honing your block because it recreates these stresses during machining. Then, when you final assemble, the bores will be completely round.

[@robino.5340]

I have a SBF 5.0L motor with GT40P heads and an E-cam What head bolt style do you recommend 6pt hex head or 12pt head bolts? Should end up around 300Hp when its complete.

[@SummitRacing]

6 point or 12 point will both work, but I generally recommend 12 point. The 12 point will give you slightly more clearance to get a socket on them.

[@nerdof360]

hi, i am looking at a SUM-680015 i was looking at it and it says the quantity is one but in the picture it shows two so which one is it?

[@SummitRacing]

Hi SUPRplasticTOES, Are you possibly looking at "inlet quantity"? This kit attaches to the single factory catalytic converter and splits into two tail pipes.

[@craigbucher5261]

Summit Racing

[@jerrymonroe1229]

I have a 94 mitsubishi 3g83 hemi head 3 cyl. 660cc had head (new)block surfaced @ machine shop.can not keep from blowing head gaskets any advice studs ? vs. head bolts

[@SummitRacing]

Hi Jerry, Unfortunately because this motor isn’t necessarily considered a high performance motor, upgraded or improved head gaskets and or head studs/bolts may prove to be difficult to find.

[@invasivecoyote1361]

Jerry Monroe pm me can help you out

[@DenoKeller]

Great Tips ! Thanks

[@Thawheelman]

do the studs themselves need to be torqued to a certain value? or do you just run them down?

[@connorjones536]

Neiman Buffard they also have to be torqued the same way

[@joshdenham8404]

Neiman Buffard The whole point of using studs is to eliminate torsional stress on the fastener. Therefore they go in hand tight, just far enough to tap them out into the hole. Torque is applied later when you put the nut on top. If you torque your studs in, you might as well just use bolts

[@Photostudioww]

i removed 12pt 12mm head bolts off a toyota 5sfe 4cyl 2.2, what studs can i use? i dont want to use bolts.

[@Trident_Euclid]

Edgar Bravo If they are tourq to yield then you can't reuse them again.

[@buckwall8410]

how to reach 60ra for headgasket installation

[@BH-ws8ki]

what about using a stud in place of bolt on harmonic balancer

[@Jgarage5]

brian cummings good question! Im curious

[@Jgarage5]

On a turboprop aircraft engine, they mount the prop over a big gearbox drive shaft and use a big prop nut. But there are so many torsional forces going on a prop that doesnt happen on a harm balancer.

[@dissociativecat7495]

so you're saying torque to engine specs regardless of fastener used ARP or stock for example my jeep 4.0 is 110 ft lb by the book ARP recommends 100 ft lb with lube bolt pt# 146-3601

[@SummitRacing]

Hello, Unless the fastener is an OEM replacement, you will need to follow the torque specs of the fastener used. ARP gives you the torque spec with their fasteners. Thanks for watching!

[@dissociativecat7495]

@@SummitRacing Thank you ! they came today ups, there was a paper in the box with specs and torque lube . crown was going to be over $50 for a 94 jeep so I went with ARP only $63 Now all I need to do is figure out what to do with the wiring harness three head bolt studs held it in place before ,only + with crown

[@Nextgeneration57]

Can you guys makes a app

[@SummitRacing]

Hi JVK gearhead, We recently launched an app available on Apple, Android, or HTML5-enabled mobile devices! apps.graydian.com/html5/?appcode=summitracing Enjoy!

[@illduitmyself]

torque assembly lube...engine oil. works same. over engineering and overthinking projects nitpicked never get finished

[@kennethpayne1140]

can you reuse head bolts in a not fire engine

[@SummitRacing]

Kenneth payne, Can you give us a call? 1-330-630-0240. Thanks!

[@cali72283]

Great videos ...

[@SummitRacing]

Thank you Carlos Valdes!

[@sebastianbrus946]

Good video

[@joseLopez-jb7yf]

do subaru sti...........arp head bolts need to be re-torque at 1,000 miles .............

[@bryantracing3022]

I bought head studs and 2 of them stripped out on the nut there bran new from summit raceing

[@darkraiden]

can you reuse the ARP headbolts or does that only apply to headstuds?

[@ryancivil]

you can reuse both

[@charlessanborn7259]

How about re-torquing heads after so many miles/hours? Is that necessary?

[@SummitRacing]

Hi Charles Sanborn, This could go a few ways. Can you give our tech department a call? 1-330-630-0240. We look forward to your call. Thanks for watching!

[@bryanwagner3571]

Be careful about using lubrication on head bolts. The science on torque is proven. 90% of the torque applied goes to overcoming the friction of both the threads and the head of the bolt. Only 10% of the torque applied goes to the clamping force. Equations show adding a lubricant will result in additional rotation required to reach the torque spec. This can can put "angle" on the bolt and stress it to its yield point and stretch. Two bolts, one lubed and one not, the lubed bolt will have to be turned more to reach spec and WILL stretch more that the un-lubed bolt. the result is less clamping force.

[@chasingthefish9042]

bryan wagner most head bolts and studs come with a specific way to torque them. many want you to use lube and torque down to a certain foot pound then degree them.

[@viktorpsherenkoff6778]

Thanks!

[@Toolaholic7]

Headstuds are worthless and cause headgasket leaks.I know someone that fixes and builds race cars including race engines.He built one with headstuds,the headgaskets were leaking and was the head studs.Built this engine right and the head studs were replaced by headbolts with the headgasket leaks gone.

[@FEETLE]

any science as to why the leaks occur?

[@Toolaholic7]

Were fully torqued down,probally not made right.This guy will not build a race engine using head studs anymore

[@benperkins2929]

@@Toolaholic7 Since they don't stretch you need to constantly be monitoring them and retorquing them every now and then. It's annoying. I agree, bolts are fine.