Datsun Roadster Forum-311s.org

Bwk2000 wrote: ↑Sat Sep 10, 2022 12:47 pm Fresh coat of wax and then introduced a little classic car to a big classic car world - Was a great day spent with a lot of really cool cars & people


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Curtis wrote: ↑Tue Sep 20, 2022 5:25 pm Without doing a bunch of searching can someone post the clamping force for the 1600, 2000, and 240z plates if you know please?

23yrRebuild wrote: ↑Tue Sep 20, 2022 4:38 pm but with the "OEM air horns plate" still in place...

Daryl Smith wrote: ↑Sat Sep 24, 2022 5:54 pm Leaving the lights on has killed the battery more times over the years for me than I care to admit.....(but not on the roadster.. )
I have been considering putting the lights on a relay (maybe timed relay), so that they turn off/on with the ignition similar to newer cars.

Gregs672000 wrote: ↑Mon Sep 26, 2022 1:20 am Today I installed my Racer Brown cam after deciding to run it over the Isky that was in there. They have a very similar duration but the Isky has a lot more lift... and it's that extra lift that I think has caused the (oversize 48mm) intake valves to tap tap tap on the block despite being clearanced. The car ran great, with the torque coming on well at 3200rpm. But the tapping was concerning, and after researching lift and what is considered going too far, I decided to return to the RB cam. The RB has .478 total lift and the Isky has .531, both with "B" cam duration (280, or about 248 at 50 thousands). Without getting too far into it, there's some research that says the lift should be no more that 15% of the cylinder bore, and that above this you can get turbulence that actually reduces flow. The RB lift was 14.5%, and the Isky was 15.5%, so I decided to change. Sure enough, the tapping went away, and after breaking it in for 20 minutes I decided to take it out and let the computer retune the fuel map and see how it ran. I have not spent a lot of timing tuning it yet, but I did notice that it seemed to have a little less torque and response at 3200 than before but was smoother and more willing to reach 7000. It was like the torque band had moved up the rpm range a bit. I'm not really sure, and I need to drive it on some more roads I'm familiar with. There are many factors that influence this I've learned, and it may be the engine wants some timing adjustments. Unfortunately I never got on the dyno this summer to finalize the timing map and get numbers, so it's going to be seat of the pants to compare cams, and where they work best. Still, I don't think I can go back to the Isky at this point anyway if it indeed was causing interfere issues. Going to check things out with a bore scope sometime soon. It will also be interesting to see what changes the computer makes to the fuel map.