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Old 3rd January 2016
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Quote:
Originally Posted by ReddTigger View Post
The "EXACT" difference is a 4% increase in displacement.. but whats done with that displacement is what the difference is.. and there is no exact because certain parts work better one way vs another.. but more so adds a couple more % to the equation due to the larger bore opening up the area around the valves and giving better breathing..

spend a little time on some of the conversion threads and you'll soon learn why the 1250 is the way to go if you want to create a high end high performance sporty without splitting cases..

we have two great vendors of the 1250 kits and their respective pages have lots of info..

in alphabetical order..

http://www.hammerperf.com


Now, I have looked through the stuff, and I still say : its nothing but ordernary tuning, nothing special there. Okay, the put in a lot of research, and dyno hours, etc. That makes these kits work well and as intended. Not much guessing there, like a hobby tuner.

It was once believed that there was no substitute to CI, but that not true anymore. For many years tuning through boost has been an accepted option.

I would choose a Supercharger / Magnacharger on the stock 1200 motor, any day, fit a new EFI with boost control, lower the compression a little bit, and I will smoke any N/A 1250 cc you can come up with.

Now is it available : properly yes
Can it be build : Absolutely.
Will it tear the transmission apart : properly yes.
Is it expensive : Don't talk about it.
Is it cool : Absolutely
Is the looks okay : Belongs to the eye of the beholder
Sound : Can not be beaten.
Power limit : With engine mods > 200 HP.

Sound of a 1250 cc Hammer tuned Harley

https://www.youtube.com/watch?v=lR2cR48jhqQ

Sound of a Magnacharged Harley

https://www.youtube.com/watch?v=Db0EYUV87Gw













www.nrhsperformance.com
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