So I went to the strip this weekend with some friends.Took my 91 f2 with 17,000 miles. Has a slip on yoshi and possibly jets? Just bought it a little more than a month ago.Ran a 11.853 at I think 116mph. I want to try and get into the low elevens or high tens if possible. Maybe a sprocket change? When I crossed the line i was in 4th gear running about 12000 rpms. Maybe gear it down a little and be able to get into 5th gear before the strip ends? What about p.p. the head and do a valve job? I have the machinery at school to do valve jobs and porting and pollishing? What kind of difference would that make? Any suggestions on quicker times? Maybe I should look into making the bike weigh less? Any suggestions would be great.

 

Less weight is a good start, strap the front end down so the forks are compressed, stiffen up the rear shock, buy a new bike.

 

I would start with weight reduction, stage 1 jet kit, k&n air filter and quick acceleration kit w/ 520 chain convert. Just to name a few.

 

So has anyone heard of the vance and hines powerpack, or maybe its a power commander? Do they just adjust timing and do they make a noticable difference? Is there a way to machanically advance my timing by skipping a few teeth on the timing chain gears? Thanks Adam

 

Power commanders are only for FI bikes. So you have to focus on getting the jetting on your bike perfect. Why not worry about your technique first. Im sure you can drop a few tenths if you perfect your technique. Whats your reaction time, 60ft, etc? How does the bike feel when the carbs are transitioning from the needles to mains? Whats your tire pressure and what tires are you running?

 

OK. So I'll forget the idea of the programmer. How hard is a jet kit to install and how much will it cost me to get ahold of one. Yeah I think technique is a good step too. What rpm does my engine build the most hp at? I just went till it almost redlined to shift. My r/t wasnt that great, my best time was .285 sec. Here are all times and speeds for my best1/4 milethisweekend below this post. The bike is really sluggish until around 7 grand or so, but really picks up around 9 grand. I ran a brand new set of regular radial tires. Nothing special about them and just ran whatever pressure was in them when I got there. What pressure should I run for a street radial?

R/T - .326
60' - 1.972
330' - 5.076
1/8 - 7.651
1/8 mph - 94.72
1000' - 9.911
1/4 mile - 11.853
1/4 mph - 115.68

 

A jet kit will help you a lot. Look around for a Dynojet stage 1 jet kit. You can drop at least a tenth off your 60'. Just look for some lowering straps to keep the front end compressed. Stiffen the compression on the rear and you'll be able to launch at a higher RPM. If you're really into drag racing, then a set of swingarm extensions will help reduce wheelies too. Shinko tires are a popular choice in my area. REAL sticky. Make sure you're fully tucked behind your windscreen. Also, some drag racers on here believe that an ignition advancer helps out the low end. However, road racers say that its all in your head. Its only $50 for the advancer so its not much to lose if it doesnt work out.

 

I looked up the vance and hines powerpack.. its actually made for the f2.. and it adjusts the timing in 4 different modes. Has anyone heard of it and how well it works?

 

i went the dj route and then some (hunting down custom parts) best bang for the buck jetting the config 30 kit http://www.factorypro.com/Prod_Pages/prodh09.htmlmy 2cent

 

Cowboy, have you installed the config 30 kit?

I have some Q's about it..