Wow that's old! He's one of my 190lb riders if the link works. https://www.facebook.com/video.php?v=844707048902537&set=vb.516964681676777&type=3&theater
Mark and Keith as in the Funnybike guys? If you mean those guys yes have put them both on the trailer with my Hayabusa nitrous bike. Here's a video of it. https://www.facebook.com/video.php?v=849331575078569&set=vb.100000052040194&type=2&theaterHave u ran mark or Keith ?
Can't agree more with this.I'm very disappointed in what I've been reading here over the last few days regarding best way to do things. .
I never use Bronze for exhaust seats in a 4 valve. Other than that I agree with everything else. LOL!Can't agree more with this.
When talking with builders you might consider talking with them about thermal management and not power. Getting power with nitrous is trivial. Managing the heat it generates should be your first concearn. Everything about a nitrous build is about figuring out how to get the heat out. Start with the cylinder head. A typical builder will focus on getting good flow numbers. They cut back the guides and go with a 5 angle valve job with very tiny valve seat land. Big lift. Big duration. Big flow. All of this is secondary on a nitrous build. You need to get the heat out of the valve and seat, and the only way the valve can rid itself of heat is through the seat and guide. The stock seats in a busa head don't conduct heat fast enough and as a result, the ex seats burn or sink towards the plug or the head of the valve can even burn right off. Advancing the exhaust valve a bit helps get the heat out. Bigger seat lands and full size guides help get heat out of the valve. Bronze seats help conduct the heat faster into the head. None of the things I mention help create big dyno numbers but they make the motor live.
Other things to focus on also have no impact on power numbers. Oil pressure / flow / cavitation is a huge problem on these bikes, but very few people log oil pressure. Case modes, baffles and pickups are tremendously important. Proper Tune / Squish / and chamber design is critical for avoiding detonation. Having a means of smoothly feeding in the power (and adjusting the tune) is critical to ET. All of these things don't affect total power. A well set up 300 HP bike can smoke a 400 HP bike. These might be things you can ask your builder.
Yes I'veI can tell you that the very fast guys don't run small motors on spray.