July 11th, 2017, 09:59 AM | #1 |
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Pregen engine in Newgen bike?
Here's an idea...
I like Newgen bikes for their 17" wheels and better tyre selections. Suspension better for track-racing. But... engine tune sucks for racing. Comparing specs and 0-60 & 1/4-mile shows Pregen bikes are faster. So... what about combining best of both? More powerful Pregen engine into a Newgen chassis! Anyone tried this? And upgrade to EFI at same time! |
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July 11th, 2017, 02:38 PM | #2 |
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...ugh. Why?
Here's the pregen with a good exhaust system. Dyno chart included. http://areapnolimits.com/products/Sl...Ninja-1988.php Here's the newgen with a good exhaust system. Dyno chart included. http://areapnolimits.com/products/Sl...-Race-2008.php There are also ways to advance the timing on the newgen engine on top of what a decent intake/exhaust and tune can do. The fastest we've seen documented in video posts to this forum are roughly 6-6.2 seconds regardless of pregen or newgen. Most are slower. |
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July 11th, 2017, 03:26 PM | #3 |
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Name: AKA JacRyann
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Hmm, power & torque-curve really does look better. I guess extra 20-lbs on Newgen is probably what hurts it?
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July 11th, 2017, 03:41 PM | #4 |
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I'm convinced that the published numbers online for the pregen are wildly optimistic. I think the bikes are nearly identical in terms of straight line performance.
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July 11th, 2017, 05:32 PM | #5 |
in your machine
Name: Scott
Location: Summer Shade, Ky.
Join Date: Oct 2014 Motorcycle(s): 98 Ninja 250/F12 aka ZX-2R "SERENITY", 91 Ninja 500/A5 aka ZX-5R "Phoenix", 84 Honda GL1200A "SIREN" Posts: A lot.
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I agree, Kawasaki didn't change much in the engine department, they focused more on looks, and suspension, but mostly looks to make it look more modern.
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July 11th, 2017, 07:33 PM | #6 |
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It's not that they didn't change the engine, they just didn't change the performance requirements of the bike. Japanese vehicle manufacturers are really good at hitting a performance benchmark consistently between generations. See also: Subaru STi and WRX. There's been like 4 generations of that car that are all very similar in terms of power and acceleration.
The head is different. Oil pan is different. There's enough different to call it a different engine, even if the external dimensions are not all that different. |
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July 11th, 2017, 08:40 PM | #7 |
ninjette.org certified postwhore
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Yeah, and the power curve is completely different. Pregen is all about revs and top-end. Newgen has tonnes more mid-range; you can use it 1-2 gears higher cruising around. Falls flat on its face in the upper ranges though.
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