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sdm9785

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About sdm9785

  • Birthday 09/07/1985

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    dfw, texas

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  1. Xnke, will the RX-7 pads fit both the vented and non vented version of the S12+8?
  2. I plan on buying the springs and retainers from isky as well, thank you though. I'm sure I read that somewhere, but it is definitely good to see it again. And to everyone who has replied, thanks for the help, just seeing the damage on the pistons made me doubt everything I thought I knew, but you guys have confirmed things yet again!
  3. Thanks for the quick reply guys. The previous owner built the engine himself, but it wasn't his first (possibly his first l series), upon first seeing what had happened I thought that he might not have been very knowledgeable on engine building as well, but after having talked with him he seemed pretty knowledgeable (I know it must not seem like it), he even stated that he did check clearances (which is what makes me think it was the timing). And no, it doesn't have a super aggressive cam, I wanna say its an A cam. With that being said I plan on using an isky .490 lift cam when I put it back together, would I have any issues with that? This will be my first engine to rebuild that has any kind of performance, so I'm fairly new to that, I've previously only built an amc 242 for a jeep and a couple of 4 cylinder low compression toyota engines. Again I apologize for being a newb! And I do appreciate all the help.
  4. Alright guys, need some help. I just bought a 76 280z. The previous owner rebuilt the engine (N42/N42) recently, when he put it back together he used flat top pistons. When I bought the car it was not running and the PO said that it had bent a valve....when I took the valve cover off I noticed 2 obviously bent valves, took the head off and every piston had hit a valve. My question is, when swapping over to flat tops, does anything need to be done to clearance the pistons for the valves, or could he have had the timing off? I apologize in advance if this is a stupid question..I've looked around the site and havent found anything. Also, the PO said that the car only ran about 5 hours, until it bent the valve...unsure if that will help you guys out or not. Thanks for any info in advance.
  5. Alright, Question. I've got a 75, I know it has one of the more sought after factory tanks, but how will it do on light track days? L28et with 3 to 400 hp is what it will be supplying.
  6. I definitely will. A lot of guys still turbo with flat tops and a p90 head don't they? Would my compression be too high?
  7. I appreciate the help guys, if I'm lucky it didn't ruin the piston to that cylinder and I can throw a head on it... If not I've got an f54 block needing to be used anyway...
  8. Hi, I'm looking at buying a 75 280z. Talked to the owner today and he said that he rebuilt the engine a couple years back, he said he put later model pistons in it to bump the compression ratio? I'm guessing flat tops possibly, dunno what stock was...anyway he said it ran great until per his words " a cam shim slipped and it bent a valve" how accurate does that sound? I'm no engine slouch but I've never dug into an L series, just wondering what I was getting into before buying the car. Any help would be great!
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