Advice on F4i fork swap - Wrist Twisters
 
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post #1 of 10 Old 09-04-2012, 11:32 PM Thread Starter
Milites Gregarius
 
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Advice on F4i fork swap

So, I talked to the guy on fireblades parting out his 2002 f4i. He will sell me his forks for essentially what I am selling my 06 919 forks for. I need to know a little bit about them from you smart fellas. I have been researching previous posts, but I got a few questions.

1) Am I better off with the f4i forks or the 06 919 forks?
2) is it really worth my time and trouble? (from my understanding, it sounds like I only need the f4i front fender if I decide to put on those forks) (or talk to heli!)
3) can a pretty novice bike modder who doesn't know a whole lot about bike parts yet pull this off?
4) What would you guys do!?

Thanks for the help

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post #2 of 10 Old 09-04-2012, 11:35 PM
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Get the forks for cheaper if you can. I don't think your 06 forks are worth $250 (more like 200). But for sure get the f4 forks! Either way, you'll have to get new springs to correct the spring rate, but you'll appreciate the adjustability. I know I did! Still do!

Its super easy to do so just do it already.

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post #3 of 10 Old 09-04-2012, 11:36 PM
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its pretty darn easy... only thing you really need is a torque wrench for the pinch bolts on the triples and lower pinch bolts... other than that the hardest part is figuring out how to prop the front up.

I use two jack stands right at the bottom of the frame by the pegs (theres a perfect tube that comes out from either side to hold the ass end up. then use a floor jack to push up on the headers... with the jack stands so far forward its maybe 50lbs if that of force on the front end of the headers. walla front tire in the air.

Btw if your getting f4i forks... may as well spring them for you and put proper 10wt oil in em.

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post #4 of 10 Old 09-05-2012, 06:59 AM Thread Starter
Milites Gregarius
 
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ok, once again, noob question. what do you guys mean by the springs? and does that mean I will have to take apart the forks (especially to put the 10wt oil in)? I don't think I am that skilled or have the tools

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post #5 of 10 Old 09-05-2012, 07:03 AM
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You will have to disassemble the forks to swap out the springs. Read this thread for a nice detailed explanation of the process on a set of F4i forks.

How To: Fork rebuild & revalve, Honda CBR600F4i. - BARF - Bay Area Riders Forum

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post #6 of 10 Old 09-05-2012, 08:00 AM Thread Starter
Milites Gregarius
 
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o jeez, that looks somewhat complicated. maybe I can figure something like that out though over the winter when i have less time on the beast

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post #7 of 10 Old 09-05-2012, 08:20 AM
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yeah... your going to have to replace the springs regardless... the F4i forks have softer springs in them due to a lighter bike... you can get springs for 100 bucks.

And no special tools are needed to take apart the forks to replace the springs / change the oil.

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post #8 of 10 Old 09-05-2012, 08:44 AM Thread Starter
Milites Gregarius
 
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Thanks for the info. On a down note, the dude just said he decided to sell them to someone else because they offered him more. Kinda weak sauce, but o well. I'll keep an eye out for them and maybe learn something new this up coming winter.

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post #9 of 10 Old 09-05-2012, 11:06 AM
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Before you install the forks, take them to a suspension specialist for the right springs/oil. Unless you weigh next to nothing, like nd4 says, the springs in the f4 will make the front end softer.

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post #10 of 10 Old 09-05-2012, 01:47 PM
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Quote:
Originally Posted by andrewebay1 View Post
Before you install the forks, take them to a suspension specialist for the right springs/oil. Unless you weigh next to nothing, like nd4 says, the springs in the f4 will make the front end softer.
No need to go to a specialist for that, unless one can't or doesn't want to do it themselves.

Stock 4Fi springs in a 919 is beyond soft or softer.
Hard front braking will very easily bottom them out, and the ride height will be too low.

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