I was wondering if anybody is tuning their 80metras for off the line and mid range torque instead of top? And what setups/gearing they are running with what results? The tuning spreadsheet doesn't really have much on acceleration stats.
Torquey 80Metras
Re: Torquey 80Metras
80metra = top-end pissing contest.
Re: Torquey 80Metras
run a metra with 14x45 gearing, it's stupid fast until about 50 or maybe less.
Re: Torquey 80Metras
Thats kinda what I want out of my Metra 80 project this winter as well. I'm planning on gearing it at 16 x 40 to start with. I feel like it should be able to pull pretty hard at that gearing.
Re: Torquey 80Metras
thats what i wanted i had mine geared 15/45 in SF with a 21dellorto and 8P it was ok but still no where near polini power torque just felt like i was overreving and def topped at about 50.
Re: Torquey 80Metras
80 metras will lift the front tire on a magnum
Re: Torquey 80Metras
Thats cause you had an 8p. If you want low end, cut and weld an estoril. My buddy had basically the same set-up my 80 metra had, but he had an estoril instead of simo, i saw him climb the steepest longest hill with 18x36 gearing. It was crazy.
Estoril plus tuned clutch, plus low gearing = great low end. You rob a lot of top end with the estoril, but if its bottom you want you will get it.
Re: Torquey 80Metras
Did the Estoril still have the restrictor in it?
Re: Torquey 80Metras
I'm fairly sure it did. It robbed a lot of top end. His bike had been clocked at 69.7 last I heard with a simo. It was probasly only doing around 60-62 with the estoril, but even with 18x36 it was ripping up hills.
Re: Torquey 80Metras
I had my 80 metra set up like this and it had sick torque. it could throw me off the damn seat.
80 metra smallport
casematched for torque (remove very little material for fuel/air velocity)
21 dellorto
tuned 3 shoe clutch with paz springs
14x40 gearing
simonini carbon fiber exhaust
this was an awesome setup. i could rev the living piss out of it, then the clutch would grab and take off like a rocket until it hit the powerband, then it was just insane acceleration.
then i soft seized it and got scared ;) lol.
Re: Torquey 80Metras
Go Estoril with your Polini Timmy! Do it!
Re: Torquey 80Metras
try a smaller phbg carb like a 16 or 17mm with an intake to match. the smaller carb isn't as good for top speed but will help with torque in the low end.
Re: Torquey 80Metras
yeah. from what ive read, fuel velocity=torque. so get as much fuel volume moving through the smallest space possible, i guess.
Re: Torquey 80Metras
I dont know why you would purposefully have something have less power. If you want torgue, make the motor have as much power as possible, then adjust your gearing and pipe to put the power where you want it to be.
Big carbs add power throughout the entire powerband. Thats all myth if you ask me.
Re: Torquey 80Metras
tell that to the 12mm carb on my 60mph wheelie pulling hobbit.
Re: Torquey 80Metras
Its true about the estoril on the 80 metra, it gives insane low end even when I had 17x42 gears. By the way the estoril I was using is for sale if anyones interested. e-mail me (I went withe the homoet for top end?!)
Re: Torquey 80Metras
we all know that the hobbit carb is magical. Peter even said that you get better low end/midragne with a big carb on a hobbit, but you wont gain top end (if i remember correctly).
Put a bigger carb on and you will still have that same wheelie machine.
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