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Old 10-31-2012, 09:47 AM   #1
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Joined: Mar 2012
From: Gig Harbor, WA
Blog Entries: 1

I Ride: 2000 BRP (XR650R)
Idea I have had but never seen attempted
I loved my XR650L but disliked the lack of power and the constant Thumping...

I thought it would be a great platform to put a CBR600F4i engine in it! I tried searching and couldn't find anyone who put a 600 inline 4 engine in a dirt bike frame...

Things that i can think of that would need to be addressed:
Engine mounts/fitting engine in frame
Shuring up the frame to handle the extra weight/power
Transmission/gearing due to higher rpm and extra power. (maybe addressed by different sized sprockets?)
Lining up the sprockets

With the open layout of a dirt bike frame i would think this would be doable...People to it to quads and go carts and those have less room to work with...

I doubt a small person would be able to handle such a beast but at 6'7'' and 300lbs i think i could handle it...

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Old 10-31-2012, 10:05 AM   #2
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Joined: Apr 2008
From: lacey

I Ride: Aprilia Factory, 525SMR, DRZ400sm, and a gaggle of others
answer-

husaberg fs570 with big bore

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Old 10-31-2012, 10:11 AM   #3
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Joined: Mar 2012
From: Gig Harbor, WA
Blog Entries: 1

I Ride: 2000 BRP (XR650R)
“ Quote:
Originally Posted by shelbyguy View Post
answer-

husaberg fs570 with big bore
Didn't realize they could make a single cylinder put out like an inline 4...

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Old 10-31-2012, 10:13 AM   #4
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Joined: Oct 2007
From: from Wa, living on Grenada (island)

I Ride: 1991 XR250L, 2007 BMW F800S, 1999 ATK 605 ESDS/SM
hill climbers do it all the time.

Motorcycle Talk

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Old 10-31-2012, 10:17 AM   #5
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Joined: Mar 2012
From: Gig Harbor, WA
Blog Entries: 1

I Ride: 2000 BRP (XR650R)
Thank you! Avb! Kinda surprised it wasn't a BMW bike you posted...

Any video's of one of these beasts in action?

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Old 10-31-2012, 10:42 AM   #6
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Joined: Jul 2005
From: spokane

I Ride: other peoples when they let me, working on Honda VF750
“ Quote:
Originally Posted by WaGigKPN View Post
Thank you! Avb! Kinda surprised it wasn't a BMW bike you posted...

Any video's of one of these beasts in action?
BMW riders have more sense

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Old 10-31-2012, 11:08 AM   #7
Moto2 Contender
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Joined: Oct 2007
From: from Wa, living on Grenada (island)

I Ride: 1991 XR250L, 2007 BMW F800S, 1999 ATK 605 ESDS/SM
“ Quote:
Originally Posted by WaGigKPN View Post
Thank you! Avb! Kinda surprised it wasn't a BMW bike you posted...

Any video's of one of these beasts in action?
lot of them here, mostly ZX14 engines though.



or here



and for fun


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Last edited by Avboden; 10-31-2012 at 11:10 AM..
 
Old 10-31-2012, 11:18 AM   #8
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Joined: Oct 2007
From: from Wa, living on Grenada (island)

I Ride: 1991 XR250L, 2007 BMW F800S, 1999 ATK 605 ESDS/SM
Here's a company that builds the frames

http://dcframeworks.blogspot.com

oh and heres'a video of the first bike I posted


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Old 10-31-2012, 11:36 AM   #9
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Joined: Mar 2012
From: Gig Harbor, WA
Blog Entries: 1

I Ride: 2000 BRP (XR650R)
Yeah...That hit the spot on a rainy Wednesday...I want one...

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Old 10-31-2012, 11:40 AM   #10
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Joined: Apr 2008
From: lacey

I Ride: Aprilia Factory, 525SMR, DRZ400sm, and a gaggle of others
“ Quote:
Originally Posted by WaGigKPN View Post
Didn't realize they could make a single cylinder put out like an inline 4...
the big bore 570 motor will make damn near same hp +/- 15hp, chances are same if not more tq

(than a 600f4i motor)

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Old 10-31-2012, 11:46 AM   #11
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Joined: Mar 2012
From: Gig Harbor, WA
Blog Entries: 1

I Ride: 2000 BRP (XR650R)
I seriously want to do this...If i make lots of money i am doing this...

Not for hill climb tho...just a fun trail machine! maybe even make it a daily driver...

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Old 10-31-2012, 11:52 AM   #12
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Joined: Mar 2007
From: Monroe-mish, WA
Blog Entries: 5

I Ride: 07 YZ450F, 74 XL350
“ Quote:
Originally Posted by WaGigKPN View Post
I seriously want to do this...If i make lots of money i am doing this...

Not for hill climb tho...just a fun trail machine! maybe even make it a daily driver...
I've never been on a trail of any sort, where I was like "man, I need 100 hp, but all at the top, and make my bike heavier and wider too"

but, I don't really get to ride all that much, so maybe I'm unique?

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Old 10-31-2012, 11:54 AM   #13
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Joined: May 2011
From: Buckley, Wa
There is no way to get near the power of an inline 4 with a single. And when you try your reliability will go right out the window. I ride quads in the dunes and have built so many big bore, ported, custom cammed, etc motors and just when they start to get fast they will blow up very quickly. I learned my lessons and put a GSXR fuel injected motor into my latest quad and let me tell you 160 HP is absolutely ridiculous offroad.

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Old 10-31-2012, 12:01 PM   #14
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Joined: Mar 2012
From: Gig Harbor, WA
Blog Entries: 1

I Ride: 2000 BRP (XR650R)
“ Quote:
Originally Posted by koorbloh View Post
I've never been on a trail of any sort, where I was like "man, I need 100 hp, but all at the top, and make my bike heavier and wider too"

but, I don't really get to ride all that much, so maybe I'm unique?
do you weigh 300 lbs and dirt bikes feel like bmx bikes to you?

And Yes, When i had my XR off road i was thinking i wanted high rpm power...

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Last edited by WaGigKPN; 10-31-2012 at 12:09 PM..
 
Old 10-31-2012, 12:06 PM   #15
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Joined: Mar 2007
From: Monroe-mish, WA
Blog Entries: 5

I Ride: 07 YZ450F, 74 XL350
“ Quote:
Originally Posted by WaGigKPN View Post
do you weigh 300 lbs and dirt bikes feel like bmx bikes to you?
6'4" 250, so. basically, yes

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Old 10-31-2012, 12:09 PM   #16
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Joined: Mar 2012
From: Gig Harbor, WA
Blog Entries: 1

I Ride: 2000 BRP (XR650R)
“ Quote:
Originally Posted by koorbloh View Post
6'4" 250, so. basically, yes
Chicken!

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Old 10-31-2012, 12:12 PM   #17
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Joined: Mar 2009
From: Spokane Valley

I Ride: Suzuki Boulevard C90, Suzuki DRZ400E, My Wife's Scooter
“ Quote:
Originally Posted by koorbloh View Post
I've never been on a trail of any sort, where I was like "man, I need 100 hp, but all at the top, and make my bike heavier and wider too"

but, I don't really get to ride all that much, so maybe I'm unique?
You're not (unique, in this sense, anyway.)

I think the increased size & weight would offset any advantages on the trail.



KevinD

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Old 10-31-2012, 12:19 PM   #18
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Joined: Mar 2012
From: Gig Harbor, WA
Blog Entries: 1

I Ride: 2000 BRP (XR650R)
“ Quote:
Originally Posted by KevinD View Post
You're not (unique, in this sense, anyway.)

I think the increased size & weight would offset any advantages on the trail.



KevinD
Totally agree that on tight technical trails it would not improve the performance...

who am i to say it will have any advantage over a regular dirt bike at all!???

If i had one i would use it as a dual sport...maybe SM...That's what i tried with my XR but lack of street power and vibration (even with street tires on it) made commuting a nightmare! Made me think if that bike had an inline 4 it would be my dream bike.

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Old 10-31-2012, 12:24 PM   #19
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Joined: Feb 2006
From: Beaverton, OR

I Ride: 2008 R6 Race Bike - #52 - And whatever's in the shop!
6'7" 300 pounds? Damn, I can see why you'd definitely want something more.

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Old 10-31-2012, 12:25 PM   #20
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Joined: Feb 2006
From: Marysville, WA

I Ride: w/ Optimum Performance Rider Training
There's almost no room for the radiator, and most hillclimb bikes run without the rad since they only run for 30 seconds at a time (or they use aircooled engines).

IMO, the 650L is a very tame bike. ANY of the newer, high performance dirt bikes will give you the oomph you're looking for. A 4-cyl streetbike engine still won't have instance throttle response and low-mid torque that any 500+cc Husky/Husa/KTM will give you.

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Last edited by theJrod; 10-31-2012 at 12:28 PM..
 
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