TRX Track Ready.... Please help me

[mishalee]

In simple terms please, What mods can I make that will have the best result for track days.
Did my first track day and went really well, the major hurdles where firstly top end speed, couldn't keep up with the others on the straight I had her pinned and looking for more, I'm probably not experienced enough to notice suspension problems. But may do after a couple more. I have heard of carb mods the GSXR was mentioned in being compatible. Anyone done one up for track specific and what did you gain the most out of, I'm serious here guy's, I hate being a chick TRYING to keep up with you guy's, I want to start passing you !!!!
So far the only mods are Micron pipes (sound great), jet kit and has been on dyno twice and K&N air filter.
If I can't get her right I need to think about another track bike. (I don't want to do that).
I'm sure I had more top speed before the jet kit, so thinking of putting standard back in and starting again.
Looking for parts to be available in Australia too....

[mishalee]

In simple terms please, What mods can I make that will have the best result for track days.
Did my first track day and went really well, the major hurdles where firstly top end speed, couldn't keep up with the others on the straight I had her pinned and looking for more, I'm probably not experienced enough to notice suspension problems. But may do after a couple more. I have heard of carb mods the GSXR was mentioned in being compatible. Anyone done one up for track specific and what did you gain the most out of, I'm serious here guy's, I hate being a chick TRYING to keep up with you guy's, I want to start passing you !!!!
So far the only mods are Micron pipes (sound great), jet kit and has been on dyno twice and K&N air filter.
If I can't get her right I need to think about another track bike. (I don't want to do that).
I'm sure I had more top speed before the jet kit, so thinking of putting standard back in and starting again.
Looking for parts to be available in Australia too....

Also have new wave disc's on front.

[trixynut]

Hello.

Power equals speed, so you need more power: standard TRX tops out about 130mph/210kph off about 78bhp.

Best 'bang-for-bucks' is Keihin FCR41 carbs, free-flowing air filter and free-flowing exhaust cans or a full system: instant 10+ BHP at the back wheel. Beyond that it gets expensive: overboring the engine, fancy cams etc and with smaller BHP increases with each mod.

Check the members rides/specs section, specifically the bikes with proven Dyno charts to show the power increase from the mods i.e. Phuk72, Honkdawillydahonk and mine.

TBH though, the TRX ain't about flat-out speed. It's all about handling/cornering speed. This is where you'll make up ground on the In-Line-4's. A decent set of sticky tyres will help here too.

Also, there's not may tracks where you'd need more than 210kph I wouldn't have thought?

Check your gearing too. Standard sprockets are 17 tooth front and 39 tooth rear. Changing these can give you more or less top end or accelleration at a cheap price.

What BHP did your dyno charts show with the Microns and K&N and jet kit?

Are you sure it's nore speed you need, and not more accelleration?






Those wavy discs have gotta be worth an extra few BHP too.

[Killerwhale]

In simple terms please, What mods can I make that will have the best result for track days.
Did my first track day and went really well, the major hurdles where firstly top end speed, couldn't keep up with the others on the straight I had her pinned and looking for more, I'm probably not experienced enough to notice suspension problems. But may do after a couple more. I have heard of carb mods the GSXR was mentioned in being compatible. Anyone done one up for track specific and what did you gain the most out of, I'm serious here guy's, I hate being a chick TRYING to keep up with you guy's, I want to start passing you !!!!
So far the only mods are Micron pipes (sound great), jet kit and has been on dyno twice and K&N air filter.
If I can't get her right I need to think about another track bike. (I don't want to do that).
I'm sure I had more top speed before the jet kit, so thinking of putting standard back in and starting again.
Looking for parts to be available in Australia too....

Turboconvert it!

[HansJ]

I am with Trixynut. No way You can expect to keep up with a modern 600 in straight line acceleration or topspeed. The thing with TRXs is that they handle well. Hone Your driving skills and You'll pass many surprised IL4 owners. I have seen guys in the fast group humiliating even 1000cc bikes with bog standard (and engines that smoke more oil in a trackweekend than a normal oil change), or for that sake, even supermotards with even less power/topspeed can surprise even on larger tracks.

Mind You, equal driving skills, and we won't have a chance though, unless it's wet or extremely twisty... But this is the fun thing with old 'outdated' bikes! Costs nothing, which means more money to spend on improvements. Sticky rubber would be nr 1, improving brakes, and then maybe suspension as the next thing. But practise, practise and more practise is what will get You faster. Straight line aceleration is boring

[phuk72]

OK - let's start with a reality check. TRxs are 10 years old and (at best) make 80bhp with jetting and cans. A 1999 R6 with the same mods is gonna be making 100. With newer 600s you are giving away nearer 40bhp so there is no way you will beat them in a straight line.

If you say you have it jetted and it's been on the dyno then Id suggest you have got it right. Riding on track often has the illusion of lower speeds becasue they are generally wider than roads and everyone else is moving as fast as you.

Straight line track speed has as much to do with corner exit speed as it does with outright power. And that's the real key to fast laps - going round the corners. Assuming you are using new (ish) rubber then they will be more than up to track use. Now you want to set up the suspenion and brakes. Then (and only then) add more power.

As has been said, flat slide carbs and open pipes give the best value for money.

[trxgordo]

Mishalee was it phillip island where you had it pinned and no more there if so understandable i have done oran park and wakefield on an import rex (also have 99 model daily steed)the import is speed limited to 180K but somewere on here have seen mod to fix(mate that races a awesome yzf750 pops power wheelies while i'm flat biscuit down the straight at both tracks) that sucks but i like the challenge of the bigger bikes that smoke you on the straight but by half track they are toast untill you get to the straight again,Thats the difference between power and torque ,like the other fella's say tyres and suspension is a big part of the parcel before outright grunt.Anyway enough bu####it for now its all about riding and enjoying the ride
You go girl

[idl1975]

In simple terms please, What mods can I make that will have the best result for track days.
Did my first track day and went really well, the major hurdles where firstly top end speed, couldn't keep up with the others on the straight I had her pinned and looking for more, I'm probably not experienced enough to notice suspension problems. But may do after a couple more. I have heard of carb mods the GSXR was mentioned in being compatible. Anyone done one up for track specific and what did you gain the most out of, I'm serious here guy's, I hate being a chick TRYING to keep up with you guy's, I want to start passing you !!!!
So far the only mods are Micron pipes (sound great), jet kit and has been on dyno twice and K&N air filter.
If I can't get her right I need to think about another track bike. (I don't want to do that).
I'm sure I had more top speed before the jet kit, so thinking of putting standard back in and starting again.
Looking for parts to be available in Australia too....

I'd be even more categorical than the clever(er) people who already responded - if you want tweaks for ultimate track satisfaction, don't even bother thinking about engine tuning. Even when I first got my TRX in 1997, almost anything that you'd see on a trackday other than KTM Dukes and supermotos would s**** all over a TRX on the straights. A stock CBR600 F2 can out-drag it in a straight line ferchrissakes. I am not knocking the idea of flatslides, blueprinting, gasflowing etc. if you have lots of time and money to spend and just want to do it, but if you just want speed, you'd save a huge amount of money buying a track bike off e-bay. Agree with Phuk that you've already got the best bang for the buck with cans and a dynojet kit - ~7hp and quite a bit of weight loss.

Altering final drive gearing via the drive sprockets can help you fine tune for your "local" track where you do the most track days. So if it's not a super-fast track, lowering the gearing carefully can help beat other bikes out of corners. Other than that, fit appropriate tyres, sort the suspension and sort the brakes in that order. I know from experience that you can ride the TRX round the outside of faster bikes and still get on the throttle earlier, so forget about them passing you on the straights. If people are passing you on the straights and them camping in the corners, you just need to move up to the intermediate or fast group. If you're in the fast group and that still happens, you need to go club racing!

[gregs656]

)the import is speed limited to 180K

most Japanese bikes are restricted on the speedo, so you can either put in a resistor so the switch can never trip, take the speedo apart and remove the switch, or put an MPH converter on there - you're never going to reach 180mph so it will never trip.

My 400 is derestricted via a mph converter.