Base weight HH's for a Turbo'd Mountain Max..?

[Yamaha_nisse]

Hi,

Thinkin' of buying some HH's for my Turbo'd Mountain Max 700...
But can't seem to decide which weight I'm going to buy..

The 53's seems fair to me? Or should I go even heavier?

 

[TBird]

You need to give some more info, how much power is your goal when you installed the Aerocharger?

 

[Yamaha_nisse]

I'm looking at 170-180HP...
Don't know my peak RPM etc. There's not info on T-MM's.

Have a great deal on some 48grams. But I've been warned to have the wrong base weight.
Even if i load the right, BUT have wrong base weight the won't work well!

 

[TRIPLESWILLNEVERDIE!]

If you are running a Yamaha primary and your target horsepower is in that range then you should be asking some of the guys with the 944 big bores that are running Yamaha primarys. It would give you a ballpark figure. Are the cylinders stock? If so using stock single pipe with turbo I would say you would still be making power at stock RPM which is very broad on a 700 8300RPM is what the books says but I have seen some mm700 with stock pipe head mods and and lightweight can that ended up dialing in at 8500.

 

[Beels]

I had a Mad Max ported, Bender triples, V-Force reeds, bored carbs, compression bumped 700MM putting out an honest 150hp. From 6 to 10K feet, I was running 8CR weights w/ 4.5g heel, 3.6g tip, Y-W-Y spring, 14.5mm rollers in the primary. Seemed to run the best at around 8700 rpm. I can't remember what the base weight of the 8CR weights were. That was with a Lightning Pro roller secondary with a 41/35 helix and I believe the silver spring.

I think your biggest issue is going to be at what rpm the boost spools up and how hard. Going to make a bunch of difference in what profile weight you'll end up using.