TomTom's 570 70 degree engine tinkering.

TomTom · Oct 22, 2015

This isnt going to be anything new, just my reflections on trying a fairly well established concept to get power out of the 570 70 degreer, not saying it will work, but I set my mind to try it out, and that is perhaps the proper description here

Bike is a 2009 570FE and is used mainly for ice racing, and with this type of riding you need all the power you can come up with, no doubt.
I already ported the heads to the specs Ive found working on similar engines along with good compression, ie around 13:1. This rendered a very strong engine and much better top end than oem offers but its still flat on top.

So now Im onto trying some of the expected weak points, 1.Im still using the oem exhaust 2. I still use the oem throttle body. (The oem exhaust is not a good idea to use anyway as the end cap will evetually work its way lose being on wot for most of the time).

So I ordered the FP-engineering throttlebody along with their ecu and quickshifter.
Exhaust choice fell on Doma full according to FP's suggestions.

Sorry if Im a teaser here as I havent got the goods just yet, but its going to get here next week as it was shipped today. Pics next week and the build begins!

Cheers! Tom

HusaBELGfs570 · Oct 22, 2015

Santa Is coming early this year

TomTom · Oct 23, 2015

Hehe, he didnt come today which means Ill have to endure the weekend.
Luckily I have my 450exc to ride in the meantime to keep attention directed elsewhere, trails tomorrow and sunday mile rallye on grovel up a hill

Ill be back as soon as stuff turns up!

maKe · Oct 23, 2015

Yea go big, or go home.

Had to mill out a custom Map sensor bracket/holder. Fp didn't include one so had to make myself one:

I'm quite happy with the current setup. Top end is definitely lively. The motor needs tb and good duration cam along with ported head to make power. I had the ignijet ECU from fp, but I quickly sold it. It was horrible to tune as the software crashed all the time while making adjustments on dyno. Not even one clean pull was able to do. Hopefully you'll have better luck with ignijet unit.

I still wanna try the GET ecu...

jon andersson · Oct 23, 2015

maKe, what windows version were you using? I have a laptop that I need to reinstall windows on that will be my workshop computer. I read that you had problems with the software and thinking of installing XP as the software is probably done during that era.

maKe · Oct 23, 2015

It was Xp or Vista on the tuners laptop. It worked and made connection to the ECU just fine, but when doing adjustments or varying rpm's the columns just were frozen, or lost connection. Really nice to hold steady rpm and you had no idea on what rpm and tps axis it was when setting up fueling.

Basically the ecu is somewhat crude on the algorithm side of things. Can get tuned quite good on WOT but part throttle and throttle response and transient response is going to suffer compared to stock IMO.

Get it tuned and tell how well it goes! I'm interested to know.

tourist · Oct 24, 2015

a tip - virtual machines can run any version of windows so you can experiment with different OS'es ... usb passthrough and realtime operation has become quite good so it ought to work for data acquisition

virtualbox is free and decent, vmware workstation costs but is worth it .. (parallels is pretty good too, costs, and might be better for timing sensitive stuff, or worth trying if the others don't work well, but it isn't as polished or solid as vmware so not the 1st choice)

let me know if you need help or more info with VM setup! i work a lot with it professionally

berglsmerg · Oct 24, 2015

I can personally vouch for that, windows xp works flawlessly with dosbox on my windows 7 machine, and the crappy User Setting Tool along with it. Thankyou tourist for your help on that one

Any chance you could crack the ecu language so I can turn off the f@$£^%{ acceleration correction ?

berglsmerg · Oct 24, 2015

maKe, a fellow berg nut loaned me his Wego, it logs rpm, tps and AFR, using that and the UST I was able to find a good enough setup for part throttle and transients, but you're right it's clunky as hell and no control of the acc. correction sucks.

TomTom · Oct 25, 2015

Hmm, I hear what youre saying, I still have the posibility to stick with the oem ecu and the bazzaz unit that Im currently using, but I will give the FP ecu a whirr never the less.

jon andersson · Oct 25, 2015

If FP engineering can work with that unit so can we. I was curious about maKe's software setup so we know what might be unstable.

HusaBELGfs570 · Oct 25, 2015

I am curious on how the bike feels with the stock ecu (modified by fp engineering for big TB).
Make are you running the bike with this ecu yet???

TomTom · Oct 27, 2015

I beleive I read somewhere, while vacuuming the net for info, that make's tuner said it would cost too much to have him getting the softy to work rather than tuning. Im confident in what FP offers plus Im used to computers so Ill make it work, add I dont have an hourly rate to consider as Im tuning it myself in my dyno.

So if I may, I will go on with the thread for now and report back on the ecu and its software once I tried it out thoroughly, fair enough?

Today the Doma exhaust arrived, looks good to me on the floor, fitment is unknown at this point, but I will report back once I tried fitting it to the bike.

maKe · Nov 3, 2015

HusaBELGfs570 said:
I am curious on how the bike feels with the stock ecu (modified by fp engineering for big TB).
Make are you running the bike with this ecu yet???

Too damn cold out here to ride (below zero on some days) and when it gets close to 10c it rains for a whole week.

Today and tomorrow looks promising... I'll have to rig up my wideband and logger on the bike before going for test ride. Wanna see how the afr's compare to my ecu so I don't make false conclusion if the performance is changed.

TomTom · Nov 4, 2015

TB arrived

Edit: Measured it and the blade is 50mm and then tapers down to 46, so its a 50mm TB.

maKe · Nov 5, 2015

Have fun modifying the airbox for it to fit in.

My advice, cut a spare inner tube and use contact glue and some loctite 5970 or similar sealant when sealing up the hacked airbox.

TomTom · Nov 5, 2015

Ill think of something no worries, its going to run in dust free environment (ice) so its not a biggie.

maKe · Nov 5, 2015

TomTom said:
Ill think of something no worries, its going to run in dust free environment (ice) so its not a biggie.

That helps a lot then. But it's still good to have air tight seal as much as possible to feed cold ambient air in.

I'm sure you have figured it out that you need to port the intake side quite a lot to blend in with the tb taper. If I remember right I had to use 990 intake boot.

TomTom · Nov 5, 2015

Thanks for chiming in maKe, always good to get advice from someone that has been through it already.

I have the KTM 990 intake rubber ready on the table here yes, and obviously I need to make the head fit the TB, got that covered.

Regarding the box, imo there is no hot air on the outside of the engine as soon as you get above 50 kph, had a friend doing tests in a wind tunnel for a corvette and even under the hood of a car at 50 kph the airtemp was the same as ambient. If I could find a pod filter to fit Id go with that, dont think there is room for one though. Filtering is mostly for screws and such not being able to enter the engine, dont ask me why Im careful of that haha :unsure: (not this bike though)

While at it may I ask what throttle cable you ended up using? I bought a 2-stroke KTM throttle grip and the wire for it, but the wire is too short on the TB side.
Edit: Throttle cable solved.

Torque Monster · Nov 5, 2015

Vortex ECU on my 663 is easy and flawless. Push the button on the program for a map change mid dyno pull and it will switch mapping in a second.

Search

Search

TomTom's 570 70 degree engine tinkering.

TomTom

HusaBELGfs570

TomTom

maKe

jon andersson

maKe

tourist

berglsmerg

berglsmerg

TomTom

jon andersson

HusaBELGfs570

TomTom

maKe

TomTom

maKe

TomTom

maKe

TomTom

Torque Monster

Similar threads

Register CTA

Recent Discussions