danny Posted October 15, 2016 Report Posted October 15, 2016 Hey everyone, I just got back from the local Dyno and pretty disappointed. I'm wanting some input on what I might be missing. I have a fresh 4mm long rod build, HJR dune play port, 64.5 jugs, 35mm air strikers, shearer in frame pipes, complete Hinson clutch kit, 1-5 override, 20cc cut domes by HJR, squish is .050, 170psi on both cylinders confirmed, +4 timing, 162 main, 52 pilot. The bike made 62hp, 40 torque, looked to flatten out pretty bad after 8k RPM. Thoughts? Sent from my iPhone using Tapatalk Quote
trickedcarbine Posted October 15, 2016 Report Posted October 15, 2016 ^that? What fuel are you running? Also, have you gone over electrical? Gapped it all correctly and made sure the flywheel nubs are even? Flywheel still magnetic? Coil grounded well? New spark plug caps? Dialectric grease and cleaned all plugs and connections? Positive squish is .050? Quote
danny Posted October 15, 2016 Author Report Posted October 15, 2016 Couldn't tell you the exact air fuel ratio, but it's possible it might be leaning out after 8k. The main seems pretty rich to me, but I could be wrong. Sent from my iPhone using Tapatalk 1 Quote
trickedcarbine Posted October 15, 2016 Report Posted October 15, 2016 And Air Stryker carbs are kind of goofy IMO. They'll jet totally different then a PWK. Quote
danny Posted October 15, 2016 Author Report Posted October 15, 2016 That's interesting, are you suspecting it's leaning out as well? Sent from my iPhone using Tapatalk Quote
trickedcarbine Posted October 15, 2016 Report Posted October 15, 2016 Post photos of each spark plug Quote
danny Posted October 15, 2016 Author Report Posted October 15, 2016 Will do, thanks for the quick response Sent from my iPhone using Tapatalk Quote
guns4children Posted October 15, 2016 Report Posted October 15, 2016 Just a question but why did you get a dune/play port when. You quad looks like it's been set up for drag? Quote
danny Posted October 15, 2016 Author Report Posted October 15, 2016 I have my drag bike, it's sitting behind the first one in the pic. Runs alcohol, stretched frame, etc. This bike was put together with pieces from past bikes, might look like an intentional drag bike, but mostly just parts I already had. Sent from my iPhone using Tapatalk Quote
danny Posted October 15, 2016 Author Report Posted October 15, 2016 Tricked, I missed the other part of your reply, thanks for the input. I'm running 50/50 race pump. All the electrical appears to be functioning, however, I'll check all of the above. I didn't confirm the squish, specs were passed to me from Kevin. Really appreciate the input everyone! Sent from my iPhone using Tapatalk Quote
sheerider11 Posted October 15, 2016 Report Posted October 15, 2016 If they are Kevin's domes and everything else checks out, that's where I would start. But we need to see the AFR from the dyno Quote
Pasi S. Posted October 15, 2016 Report Posted October 15, 2016 I know you know better than me, but are you sure that you have small bore Shearers? Quote
Sandking Posted October 15, 2016 Report Posted October 15, 2016 Not sure how the air strikers are compared to pwks but I'm at 48 pilot and 152 main with similar set up and CPIs. huge gains going from 158 main to a 145 during dyno tuning and it was dyno'd with t-5s. Quote
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