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roger280zx

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Posts posted by roger280zx

  1. If you are going to rattle can it, do it like this.  Lots of light coats, with a little wet sanding the only people who will know it was a rattle can job are the ones who watched the video.  The only thing I would have done differently is I would have gotten all the leaves off of the ground, cleaned the surrounding area and soaked all that concrete with water.  That way there is no trash in the paint.

  2. I dont have any reason Im not going that high up to 7500-8000 rpm its just that I dont see a need to or afraid of something failing at that high of rpm. But I know if I do, my DCOE 45's can more than handle it along with my ARP bolts and MLS gasket.  I would be more than estatic if I got 250hp or more out of my setup after all this headwork, however that wasnt primarily my goal, just to have more oompf...

     

    I recently managed to get a set of used high compression 89mm Kameari pistons for a 3.0L setup for a 100$ in near new condition. Ill get some FJ20 rods, and just pack it all away for a rainy day when I am ready to tear the block apart in a few years perhaps.

    E production z's make 250 flywheel all the time.  That's on 2.8 12:1 .500 and "stock" SU's.  No reason you can't do that with no race restrictions and triples.  Don't ignore the Header.

  3. The benefits of quench are well documented.  I imagine the benefits of leaving the stock ish deck on the head would begin with just that.. not everyone wants to take 2mm off their deck, and continue from there.  I would speculate marginally better cooling and retention of rigidity but it is pure speculation.  1fastZ has done a lot of work on achieving quench with custom pistons.  His ITB 3.1 has ridiculous compression (13:1 iirc) and loves pump gas.  Dad had a 283 built in '74 with catalog bought forged domes that were finish machined for his chamber.  13.5:1 iron heads pump (100 octane) 8000 rpm- has nothing to do with a p90 shaved vs. unshaved but just to illustrate different ways to achieve quench.

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  4. I have a QM twin 5.5 setup.  The flywheel and clutch assembly weights 9.1 lbs, not sure about the starter adapter but it is almost noting as it is aluminum and like 4x5"x .5".  Whole thing is for sale for $500 shipped-just sayin.  Safe to say the whole thing with a lighter starter whould be a sum of around -27 to -29 lbs by my guestimation.  With most of that weight being driven right off the crank :icon46:

  5. The fascination with light wheels is funny. My hoosier R6s weigh so dang much that differences in wheel weight seem pretty trivial. I would like $60 wheels if they were made out of lead! Now if you wanna talk paper-thin drag tires we have something to discuss.

    The fascination is with unsprung and rotational weight.  The greatest impact to both is made at the wheel and tire.  Your r6s are heavy relative to what?  According to hoosiers spec sheet the only ones I can find over 30 lbs start with a 3....and end with a....19.  For example a 315/35/17 r6 weights 27 lbs, a Kumho exta is 34, and goodyear f1 is 30 lbs.  Slicks are always lighter, even r6's.

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