lazarosp
Novice Class
Posts: 67
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posted October 03, 2012 03:02 AM
MR12 and ignition
I am thinking to make a new map for my bike using MR12.
Do I need to go to dyno or just add some (?) fuel to the map I am now using?
Having this ignition map:
for 100 octane pump gas do I need to make a new timing map less agressive?
With this timing it made 210hp.
  
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eklipse636
Needs a life
ZX-14
Posts: 6046
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posted October 03, 2012 03:10 AM
 Edited By: eklipse636 on 3 Oct 2012 12:36
If you are going to spend the money to run mr12, I would get a custom tune done.
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Best: 60ft 1.351 1/8 5.68 mph 123.98 1/4
8.89 mph 151.32
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shiphteey
Needs a job
Posts: 2529
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posted October 03, 2012 03:39 AM
quote:
If you are going to spend the money to run mr9, I would get a custom tune done.
He said MR12, but yes, considering the costs associated with race fuel definately spend the money to tune it right.
A.
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Gemini Motorcycles
Topping out everything from Ninja 250s to nitrous ZX-14s.
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eklipse636
Needs a life
ZX-14
Posts: 6046
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posted October 03, 2012 04:37 AM
quote:
quote:
If you are going to spend the money to run mr9, I would get a custom tune done.
He said MR12, but yes, considering the costs associated with race fuel definately spend the money to tune it right.
A.
Mr9... Mr12 ... same price.
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Best: 60ft 1.351 1/8 5.68 mph 123.98 1/4
8.89 mph 151.32
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RICH CRAFT 1
Zone Head
Posts: 681
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posted October 03, 2012 05:33 AM
I never go over 2° on pump gas, on something like MR 12. I would think either no timing advance, or 1° at the most. A lot of it also comes down to how hot is the motor, detonation or pre-ignition is sometimes started buy hot spots in the chamber. because of the low octane, the flashpoint is quicker, less timing is needed, on a high-octane fuel like C 16 for nitrous, it will hurt your horsepower without nitrous, because of its slow burn rate, this can be helped by moving the timing up if you're just running motor. I have heard of some guys, knocking the rods out on MR 12, probably because of hi timing, and hot lapping it.
Ken
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Red 06 ZX14 RR
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quikgix
Expert Class
Posts: 274
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posted October 04, 2012 06:33 AM
I pull 3-4 degrees of timing out of my bike with MR12
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1352cc 8.39@159mph on motor cant wait to spray this bitch
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