Top end, no problem, similar material, suitable length of thread engagement. We'll see what happens.Ĭonsidering that the object of torquing the studs is to stretch them (minutely), it's really a good idea to consider the end fasteners. They said they would try to help me out with the repair and I'm waiting on a call with a proposal. I think that they are thinking that if they acknowledge this is a possible result then they could be liable for cracked blocks or stripped threads when it does happen. They're thinking about changing the value of the torque spec or putting in some kind of warning in the instructions, but also said they might just stop selling the kit. He acknowledged though that the slight difference in stud isn't really the issue, it's the strength of the thread in the block. That didn't make a lot of sense to me and the gentlemen I talked to was sort of vague about it but indicated that TA should really be providing the exact Rover kit. There's another complicating factor - I got the studs through TA Performance and evidently there is some difference between the ones I have and the pure Rover kit, sounded like a slight material change. They are arguing that they can't be held liable for the full damage because it may be that I just have a weak block. They have sold around 600 sets of these and say this is the first cracked block they have heard of, though they did seem to acknowledge reports of thread pull-out. ARP says that they tested the factory head bolts when designing this kit and the 100 ft-lb torque spec correlates to ~10% increase in clamp load. Well, it still isn't resolved but I have made progress. I'll report back when I hear more from them. The gentleman I talked to sounded legitimately concerned and asked for photos, block info, etc. I have spoken with ARP today and they are investigating. With ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT. Following the manufacturers recommended torque sequence tighten the nuts in three equal steps to 100 ft lbs The fasteners when motor oil or other low quality lubricants are used.Ĩ. This is due to higher friction on the studs as well as inconsistencies in the clamping force of ARP recommends using theĪRP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT that is provided with each kit as opposed to Then install the washers and the nuts onto the studs and tighten them hand tight. Lubricate the stud threads, nuts and washers with ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT. Looks like I can't attach a PDF but you can easily download it off their web site. The ARP kit (157-4301) contains and instruction sheet with torque instructions and pattern. Has anyone seen a failure like this before? I don't think I have much alternative but to replace the block, will be calling them tomorrow to discuss. The block was a used take-out unit that was bored and new liners installed by a reputable machine shop (will not be named until I can resolve this issue) that has lots of experience with these engines. I used ARP studs and installed per their instructions - torqued to 100 ft-lbs total in an ascending sequence of three steps. I'm certain it wasn't this way when I assembled it, it seems like the torque of the head studs caused the cracks. Today I got the engine out and the heads off and found a much more dire situation, it appears I have cracks around one of the head bolts between cylinders 2 and 4. When I put water in the cooling system I had leaks into the valley area that I thought was the Cometic MLS gaskets I'm using. I was close (or so I thought) to firing a new 4.0L with new liners, forged pistons, TA heads, etc. It comes in both 32-bit and 64-bit downloads.Well, my attempts to get a new engine for my racecar up and running are not going well. Previous versions of the operating system shouldn't be a problem with Windows 8, Windows 7 and Windows Vista having been tested. It can run on a PC with Windows 11 or Windows 10. The News Rover 26.0 demo is available to all software users as a free download with potential restrictions and is not necessarily the full version of this software. This download is licensed as shareware for the Windows operating system from Internet utilities and can be used as a free trial until the trial period ends (after an unspecified number of days). News Rover also has a JPG picture gallery and file encryption. News Rover includes a built-in RAR/PAR processor for handing RAR file posts. News Rover is the ideal tool for downloading MP3 music files, JPG pictures or full-length movies. Just enter keywords and News Rover will find matching files in any newsgroup. News Rover is a Usenet news reader that features a built-in search service for finding files in any Usenet newsgroup. News Rover Usenet newsreader with built-in file search
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |