Max spool 16 & 8jp question

[Doc Harley]

This will be my first time at the lake with MS16. Is it better to run a proven belt with 2,000miles on it or put on a new belt and break it in?
Going to drop sled & head to the lake. I can take time and break in the new one. That's not a big deal.

 

[Motorhead]

This will be my first time at the lake with MS16. Is it better to run a proven belt with 2,000miles on it or put on a new belt and break it in?
Going to drop sled & head to the lake. I can take time and break in the new one. That's not a big deal.

Wow, an 8jp with 2000 miles on it. Yeah change it out and break in the new one!
Here's to hearing that 8950 - 9050 rpm range once belt is broken in.
Hope the lake is smooth and fast for you.

 

[Doc Harley]

Wow, an 8jp with 2000 miles on it. Yeah change it out and break in the new one!
Here's to hearing that 8950 - 9050 rpm range once belt is broken in.
Hope the lake is smooth and fast for you.

Thanks, Motorhead..... completely STOKED!

 

[Fords4life]

Better get that 2000 mile 8jp belt to the smithsonian, as motorhead said a new one, your new found power will quickly vaporize the old one, good back up spare to get ya home or tow a dead ski- doo or poo!

 

[Doc Harley]

Better get that 2000 mile 8jp belt to the smithsonian, as motorhead said a new one, your new found power will quickly vaporize the old one, good back up spare to get ya home or tow a dead ski- doo or poo!

Definitely.....I'll probably make the switch to XS825 after this week. Lol.
Nothing like minding my own business and a Boost or modded Mach Z shows up. Then half track BOOM!!
"Hey guys....I was about a bus length on you just b4 she let go."

 

[NYTurbo]

Switch over to the 825 .

 

[fourload]

You will need to re clutch with the xs825. Dropped my RPM close to 300 with the sm powertrail tune.

 

[Doc Harley]

Switch over to the 825 .

You will need to re clutch with the xs825. Dropped my RPM close to 300 with the sm powertrail tune.

Funny you should mention....i was going with a brand new 8jp. I posted on FB that I wanted an XS825. A guy is coming home (probably a member of ty) & I'm heading up at the same time. Going to meet up and purchase it from him.
So yes, I'll have to lose a little weight. Qay-70's @ 72g now. so might be back close to empty (70g) ?!?!

 

[number1kyster]

Funny you should mention....i was going with a brand new 8jp. I posted on FB that I wanted an XS825. A guy is coming home (probably a member of ty) & I'm heading up at the same time. Going to meet up and purchase it from him.
So yes, I'll have to lose a little weight. Qay-70's @ 72g now. so might be back close to empty (70g) ?!?!

They might be too heavy, even empty with the XS825.

I believe Justinator found QAY66 worked best with that tune and belt.

 

[Doc Harley]

They might be too heavy, even empty with the XS825.

I believe Justinator found QAY66 worked best with that tune and belt.

Funny thing....I have a couple primary springs I could try.
Dalton BLK/BRZ w/128 finish
Yamaha Blu/wht/Blu w/111 finish
Would either of these help or hurt?!?!
I forget how the finish works exactly?!?!
I think a higher finish results in higher RPM which might offset the belt?

 

[Fords4life]

Higher finish rate equals higher rpms, if you have a belt sander or such you could reshape the end of weights lighter, say 2 grams for more adjustment range, with your scale ofcourse, worked well for me with magnetic type wieghts for cat.

 

[Doc Harley]

Higher finish rate equals higher rpms, if you have a belt sander or such you could reshape the end of weights lighter, say 2 grams for more adjustment range, with your scale ofcourse, worked well for me with magnetic type wieghts for cat.

I understand what you're saying. To be honest, I'll need the weight later 275+.
I'm very hopeful that one of those springs (Dalton BLK/BRZ) will offset the XS825. If not I'll have to run the 8jp.

Stock primary spring 105+/-
Dalton BLK BRZ. 128

I'm not sure what the 23 extra lbs of finish will do? Gotta be 300 - 400 RPMs higher.
Am I incorrect?

I read in ty that a gram of weight is appx. 200rpms
Couldn't find anything in regards to primary spring finish force?

 

[NYTurbo]

They might be too heavy, even empty with the XS825.

I believe Justinator found QAY66 worked best with that tune and belt.

Really what hp is ms16 supposed to be ?

 

[Doc Harley]

Really what hp is ms16 supposed to be ?

260hp.... with 8jp 72g is the recommended starting point.

 

[justinator]

In my case I liked the 66gram base with weight added to be better but I think youll be okay with 70's but likely empty. Depends on your weight and track and secondary setup etc.