1990TSIAWDTALON
Moderator
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- 8,075
- Nov 14, 2013
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Independence,
Kansas
Well fella's, I had to STAND on my engine stand to do it. I am not the big green dude .
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Sorry, I meant the axle nut, not lug nut. I still don't remember having a hard time on my ARPs.Holy lugnuts torque Batman!
Torquing horizontally is harder than applying the same torque vertically. Wheel studs you apply in a downward motion and it's easier. I use a 1/2" drive torque wrench for both and at 90ft-lbs in both scenarios it's very easy to do for lug nuts, but it takes me much more effort to do the head bolts for my racecar.
Well fella's, I had to STAND on my engine stand to do it. I am not the big green dude .
I found some humor in this response when you re-read it! Maybe your torque wrench is bigger than mime we will never know!Do you have a small torque wrench or something? I do my lugnuts to 140ft/lbs and it's easy as hell. I have a big torque wrench though.
Yep!!!!Holy lugnuts torque Batman!
Torquing horizontally is harder than applying the same torque vertically. Wheel studs you apply in a downward motion and it's easier. I use a 1/2" drive torque wrench for both and at 90ft-lbs in both scenarios it's very easy to do for lug nuts, but it takes me much more effort to do the head bolts for my racecar.
What is science...... this is dsmtuners. We believe if we think hard enough, that is the way it is.100ftlbs, moly lube, and it's not that difficult, but that may be because I have a long wrench. You know, leverage and science and stuff.
I think the most important factor is using the torque set when the head was torque plated... I would really like to know at what point you are just pulling the washer into the head casting. I think after a certain point the amount of torque is irrelevant. Im not an engineer but it I feel like extra torque beyond 100ft lbs is pointless......I wish someone could do an experiment to quantify the load on the gasket material. The gasket can only be compressed to a certain point, id imagine the aluminum would yield before the gasket does. The amount of energy these studs apply to the deck surface is incredible..
Wahlen R&D knows of it. I think ARP has it now. Thats on the down low tho. Rumor has it... That's why they are R&D'ing!!I think the most important factor is using the torque set when the head was torque plated... I would really like to know at what point you are just pulling the washer into the head casting. I think after a certain point the amount of torque is irrelevant. Im not an engineer but it I feel like extra torque beyond 100ft lbs is pointless......I wish someone could do an experiment to quantify the load on the gasket material. The gasket can only be compressed to a certain point, id imagine the aluminum would yield before the gasket does. The amount of energy these studs apply to the deck surface is incredible..
The l19s are rock hard. These studs are wonderful, not to mention we have the larger shank diameter over the 7 bolts. I can't imagine these studs failing at 99% of the ho/boost normal guys run. If your getting to the point where your half filling the block.....your probably running some diesel ass studs. From what I understand the big horsepower guys aren't blowing heads off, there blowing the block apart. That should tell you something.Wahlen R&D knows of it. I think ARP has it now. Thats on the down low tho. Rumor has it... That's why they are R&D'ing!!
I've heard of better torque spread with near normal or normal clamp loads.
BTW with L19's they feel STRONG.
What is science...... this is dsmtuners. We believe if we think hard enough, that is the way it is.
~95ftlbs here with moly lube. ~105ftlbs with oil.
I was speaking to arps. Not oem.
Oem specs are as followed
cold - 65-72 ft.lbs
hot - 72-80 ft.lbs
ARP I believe calls out 80 ft.lbs on their sheet that comes with the studs. This is with using the moly lube. If you dont have moly lube you can use oil and bump up the tq ~10-15 ft.lbs
This is typically first time uses as well. The more you use them the more they will stretch. If you reused them then I could foresee this happening.
Looking at the pic it looks like you were using ARPs. If they broke at that low of torque be thankful you didnt run them. They were stretched beyond their limit.
I think the most important factor is using the torque set when the head was torque plated... I would really like to know at what point you are just pulling the washer into the head casting. I think after a certain point the amount of torque is irrelevant. Im not an engineer but it I feel like extra torque beyond 100ft lbs is pointless......I wish someone could do an experiment to quantify the load on the gasket material. The gasket can only be compressed to a certain point, id imagine the aluminum would yield before the gasket does. The amount of energy these studs apply to the deck surface is incredible..
Did someone call for an engineer??You must be logged in to view this image or video.
3) Torque wrenches are notoriously inaccurate, even the "good" ones. This is usually accounted for in specifying a nominal torque that accounts for experimentally acquired torque spreads. Even using the same torque wrench under the exact same conditions back to back, often creates some measurable difference in preload.
.
Not so. Any average beam torque wrenches are between 1-3% in accuracy, the middle third of the range is where they are closer to 1%. The only calibration a beam torque wrench requires is alignment of the zero mark, this is accomplished by tweaking the beam to align it.
At the dyno I made 640whp I was around 5 degrees at 5800 and ramped up from there to about 9 give or take. Now that im closer to 40 psi ive lowered the timing to about 3 degrees at 5500 and ramped from there.If you are down to 3*, and need a hks gasket to keep it together it's time to find a new hobby.
Thanks for that.....I try to give back as much as i have taken. The hks gasket is a work of art. Youll have no problems. Trust me.I think your builds deserve a pat on the back as you explain how to finally get it right and let others know YOUR experiences. Thanks for feeding back to the forum, thats one of the best things on here.
Will that HKS hold 45 psi all day? I need to know as you know. Thanks again!
Im curious if you would like to share? What would consider safe timing at the onset of full boost say around 5-6k? This is in a setup running 60+lbs /min on e85?If you are down to 3*, and need a hks gasket to keep it together it's time to find a new hobby.
I'm not clear on what you meant by "...be thankful you didnt run them"? Once they are in and set, what force does it take to break them off the block on the road?
There is a great review on youtube, The guy drags his evo and runs down all of the gaskets he uses. The hks gasket layers are much thicker and are able to handle detonation much better. The felpro gasket for instance has a very thin inner layer. I dont know if they design this intentionally to act as a fuse but he clearly demenstrates why the hks is better and worth the moneyFollowing.. What makes the HKS gasket into this great solution? compared to a Felpro or MLS version?