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  1. 68Valiant225

    Engine Build Tech Help

    Hughes says 35 dABDC is the actual closing point Edit: have seen some articles that say to add 15* to a .050" lift point. That math gives me 50* and 7.99dcr
  2. 68Valiant225

    Engine Build Tech Help

    Gasket thickness included, heads are open chambered. Piston measurement was taken with the old bearings I received the block with, rod and main bearings just snug, not torqued.
  3. 68Valiant225

    Engine Build Tech Help

    What kind of guidance on dcr to octane requirement is there? Rule of thumb on that?
  4. 68Valiant225

    Engine Build Tech Help

    Block hasn't been decked, kb pistons measured .030 in the hole which was part of my 9:1 calc.
  5. 68Valiant225

    Engine Build Tech Help

    So I'm trying to rebuild a 318 to throw into my Valiant. I've posted a couple other threads about this build and this is the latest update with me feeling like I'm either in over my head, or just got too excited about parts and didn't spec the correct parts. Basically I picked up a .020" over...
  6. 68Valiant225

    Hastings Ring Gap?

    The car is going to pretty much live at and around sea level, so setting it up for dense air is more important than performance at high altitude. To note, I had the 9.4 number in my head and didn't check my notes, that was my potential highest number with some pretty big work to get there. Sorry...
  7. 68Valiant225

    Hastings Ring Gap?

    Thanks for all the info! I kinda picked up someone's unbuilt motor, so it's not like I researched and bought all of the parts. Little bit of detective work for me, but it's getting closer. Looks like .032" is probably a good target for me, and the image above says 2nd ring is fine to be gapped...
  8. 68Valiant225

    Hastings Ring Gap?

    I'm actually starting to put together the bottom end of my .020" over 318 after way too many months (whoever it was on here that told me to pay them to build my motor was probably right), I'm finally measuring ring gap for the motor. Basically it's just going to be a mild street/strip motor, I...
  9. 68Valiant225

    Bent Frame, bent k member

    Update and resolution: picked up a dirty but pretty good looking k member last night. I had meant this thread to be weighing pros and cons of aftermarket tube k members, but instead it turned into a wanted ad. Thanks again to all y'all that offered up your stuff to me, I take appreciate it. Now...
  10. 68Valiant225

    Bent Frame, bent k member

    I actually have factory discs on this car, KHs that have kicked my *** every time I touch them. But when they work they work good. Working to get a 73 frame, I'll keep y'all updated if it falls through.
  11. 68Valiant225

    Bent Frame, bent k member

    There's a reason I put shoulder belts in my car back when I was dailying it. I wanted to at least pretend I was safe in there
  12. 68Valiant225

    Bent Frame, bent k member

    I actually got a message from a local member that has one, so I might jump on that prior to getting one shipped. Everyone on this forum is super generous!
  13. 68Valiant225

    Bent Frame, bent k member

    So I should call back the body guy and tell him to leave the k member bolted in and straighten it all up? I don't want to come across as a know it all jerk on that phone call. If he wanted to drop the k member to straighten the frame, is that just the best way to do it, and it'll be fine if I...
  14. 68Valiant225

    Bent Frame, bent k member

    So for years of owning my 68 Valiant, I've known it has a bent frame. Finally got it in to a body shop to get it all squared up and got a call today, they told me the k member is bent, too. Basically the conclusion is that the k member isn't fixable and that it likely won't bolt in place after...
  15. 68Valiant225

    My First 318 Rebuild

    Yeah, it's a cast crank.
  16. 68Valiant225

    My First 318 Rebuild

    I'm not set on using these rods. Right now they're the most convenient, but like I said, I know nothing about them, I will measure them next week. So I'm still not clear on what causes rods to be copper coated, I poked around on the Internet yesterday and didn't find any satisfactory answers. If...
  17. 68Valiant225

    My First 318 Rebuild

    2406782 Here's a picture of the top end of the copper rod, I think it's bushed. Also just to iterate, I know nothing about the history of this engine, i don't even know if it ran when it was taken apart
  18. 68Valiant225

    My First 318 Rebuild

    I'm not done with the heads, but I'm getting to the point where I might just have a shop go through them and put new guides and such in, it seems like that's a place where budget should be higher. Anyways on to the bottom end, I cleaned up the conrods and got 3 that came out brown. It doesn't...
  19. 68Valiant225

    My First 318 Rebuild

    So if I'm within a half thou on the valve diameter after polishing then I should be good to keep these valves? And for margin limit, you mean the amount of material you can take off the chromed surface?
  20. 68Valiant225

    My First 318 Rebuild

    I'll keep it on the topic of cylinder heads, I'm assuming surface finish on the valves is incredibly important and if there's any signs of wear or deterioration of that finish I need new valves?
  21. 68Valiant225

    My First 318 Rebuild

    You're saying the heads have been redone because they have bronze guides? I know for sure the heads have been off the engine, they used different head gaskets (not sure why). Just trying to track the logic with the automotive archaeology
  22. 68Valiant225

    My First 318 Rebuild

    Got the valves all out, I wasn't patient enough with the first valve I did and definitely hurt the guide, some bronze came out with the valve and it took too much force to pull (hindsight is 20-20). I got the valves cleaned up pretty good and am planning on reusing them if possible, but am not...
  23. 68Valiant225

    My First 318 Rebuild

    Fair enough. On the specific topic of the valves, they seem to be getting caught up near the keeper groove. I don't see any obvious burrs or anything. Should I just hit them with some emery cloth until they slide out ok?
  24. 68Valiant225

    My First 318 Rebuild

    Alright, after a longer hiatus than expected, I'm back to actually building this engine. I was chatting with my coworker and he was saying that I should get the heads gone through by a machine shop. I've gotten them disassembled except for 2 exhaust valves on each head. These all won't go...
  25. 68Valiant225

    cold feet about potential bad lifters

    So cyl 2 intake lifter wasn't rotating. Cyl 5 intake is also scarred. Both had to come out of the bore thru the bottom after pulling the cam. I'm assuming this is a bore issue with the block, or is crowning on the lifter potentially at fault?
  26. 68Valiant225

    My First 318 Rebuild

    Update: on Saturday I picked up a .020 over 318 block with a TON of parts for it. None of it assembled, but it has new cam bearings and came with basically everything you need to build an engine. Came with kb167 pistons, as well as stock replacement pistons, both .020 over. Aluminum intake...
  27. 68Valiant225

    My First 318 Rebuild

    I appreciate all the input that people have thrown up for me. With my searching for parts, and not knowing where a good "we pull" scrapyard is around me, I decided to buy a .020" over 318 shortblock, with kb pistons. It's got all the machine work done on the bottom end, freeze plugs, cam...
  28. 68Valiant225

    My First 318 Rebuild

    A budget doesn't mean ZERO budget, it just means I'm paying attention to the numbers. I got a little excited about building a higher perf motor, but you're probably right Magnum is the way to go. I have a 5.9 mag in my dad's garage that I might be able to borrow, but that means new converter...
  29. 68Valiant225

    cold feet about potential bad lifters

    My First 318 Rebuild for those of you that want to follow along with the rebuild
  30. 68Valiant225

    My First 318 Rebuild

    So if any of y'all have been following along with my "cheap" cam swap, you know that the cam went flat and put a bunch of metal thru my motor. So I'm planning on pulling the motor out this weekend and tearing it down. I have a couple of options for "while I'm there" projects because even though...
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