I'll apologize and never say a bad word about you EVER. But i'll bet you aint got any to show. I BEAN doing this for longer than yer alive,trust me i know what i'm talking about.
By the way my finding are based on actual tests Last edited by Rivi; at PM. You said i called arp Bolts don't just break unless something is very wrong. Bolts don't magicly wear out because they are torqued one time either unless they are abused in some way. I';m 52,don't try bsin me. So you've been doing this since you were 12! Who's BS'ing now. Act your age then!
Where are your superior engine building examples? Pics, vids, results in the real world at the track? Or are you a 52 year old street racer in a over the hill crisis trying to relive his lost youth? As I stated earlier as soon as I would post a pic it would no longer be about the bolt you would argue something else, like what did I do to break it. Quite being retarded. If you have never experienced a broken bolt then go get ready for school before mom get's mad cause your about 14 then.
You just proved your full of it with thoughtless assumptions. Originally Posted by sunsetorangess. Gm did use torque to yield bolts all over our motor's, Its not so much that the bolts will break but in the end they will not be torqued correctly and could lead to some iffy situations.
For the price and the availibility its a wise decision to replace. This allows for a more even load, and is especially useful for some of the gaskets and cylinder heads made out of less forgiving materials. Because they are stretched out the first time, though, it's highly likely that they will fail if reinstalled, due to overstretching and improper clamping.
If you're unsure whether or not you have TTY bolts in your engine, check the specifications in your engine manual, which should tell you. An old head bolt that doesn't allow for proper clamping can lead to leaks in your engine. Coolant will be able to leak through the bolt hole and cause more issues for your engine. One of the largest issues with reusing old head bolts that are past their prime is the risk it creates for your gasket. If a head bolt breaks or fails to maintain torque, you can blow the head gasket, which in turn leads to a whole host of other issues for your engine—and an expensive repair.
Similarly, you won't be able to install worn or damaged bolts correctly, which impacts how the gasket is installed. A poorly installed gasket leaks and can damage other engine components. All in all, it's often best to install new head bolts when you work on your cylinder head or head gasket, unless you can be absolutely sure the age and condition of your current ones. It will save you headaches and cash in the future. If you have any questions about head bolts for your engine, or any of the other diesel engine parts we offer, please don't hesitate to give one of our certified techs a call at Or you can request a quote online.
Welcome Guest Log In. Inspecting and Cleaning Your Head Bolts After you remove your head bolts, you'll want to give them a solid inspection before deciding whether or not to reuse them. Sounds like a PITA. I took a look at the parts stores and I cannot get valves on a Sunday so option 1 is likely out. I went ahead and sent an email to the cylinder head shop to see how they'd like to proceed. I think my preference is they take their parts back and I'll find someone else with the parts.
There's a large cylinder head shop here in town that I've used in the past but they were slightly more expensive in this instance I guess I understand why now and I was trying to do this as cheaply as possible again it's a k mile mitsubishi. Thanks for all the help. But it's definitely been a fun one. Working on cars is supposed to be my relaxing time. I am currently rebuilding a Mitsubishi 6G74 3. Virtually the same engine. Previously the engine had a head gasket repair and that mechanic did not replace the head bolts.
We got about 40k miles out of the head gasket repair when the engine spun the bearings. For a few months prior to bearing failure, the engine had begun to use coolant so I suspect the head gasket had failed again.
I attribute the failed bearings to coolant in the oil but no firm evidence. I was concerned on the torque to spec then relax sequence on the head bolts affecting the head gasket sealing and had called Fel-Pro help line and they confirmed the sequence had no effect on the gasket and recommended I follow the manual. I would have tossed the bolts and reused the head gasket. The bolts are done if they are actually TTY once they've been stretched but the head gasket is ok until you run it through a heat cycle.
To each their own. Not all head bolts are TTY. And what many do not understand is a manufacturers torque spec as well as thier sequence values are directly correlated to the stock gasket and its crush characteristics. Some but not all aftermarket gaskets crush differently so torquing a aftermarket gasket using the manufactures procedures can and will cause them to leak in some cases.
Cometic is a fine example of that argument. They will crush more then stock. So you need to change up your technique when installing them.
Joined Apr 17, Messages 2, Location Massachusetts. Definitely replace since they are TTY. I would also use a new head gasket no matter what Felpro says.
It just isn't worth it to me to reuse the gasket. Schurkey Well-known member. The head rebuilder is at fault for all of this, as long as they shipped with the wrong camshaft. Tell the head rebuilder to buy bolts and gasket if you're not comfortable with re-use. Fixing their screwup is not something that should cost you extra.
Those aren't TTY bolts. I also would not call them "pre-stretched". Any gasket that comes apart during dis-assembly would be reinstalled Thin-stemmed valves I bet they're bent. A runout check would be wise, as would verifying that the guides are still good. Just how "wrong" of a cam is this?
Last edited: Jun 13, One tech had an engineer from Landover that said TTY bolts could be reused once. For example of a TTY bolt would be on powerstroke diesels. The sequence is 60, 80 ft lbs. Then three 90 degree turns. May not have been that much, but it sure as hell felt like it. MoonRise Well-known member. TTY, no reuse. Use new fasteners. MoonRise said:. Danno1 Well-known member. Joined Oct 16, Messages Location Mass. Joined May 5, Messages Schurkey said:. Using their logic, you'd need a new engine block every time the head was reinstalled--the threads in the block experience the same sort of "first-thread" trauma as the first thread of a nut.
For the record If I remove them later, and the stripe is twisted
0コメント