Need Front End Modding Opinion

[ChrisK]

Over the last couple of weeks I've been learning all sorts of new things about front end dynamics, love this forum for that reason 

My 98 M900 has the adjustable Showas, however they're severely undersprung for my 210 pound self. I'd really like to get this sorted out one way or another and I'm seeking opinions on which way you guys would go. I should also say that I'm having difficulties getting my OEM calipers to work correctly, seems no matter what I do I can't get all the pistons to move at the same rate and it's causing "pulsating" when braking as well as decreased braking power.

Option 1: Purchase racetech springs that are sprung for my weight and just keep working on the calipers, withe the confidence that they'll eventually come around. Racetech springs are $114.99 I believe.

Option 2: Fit my bike with GSXR forks/calipers from around 2005-2008. To make this happen I figure:
  forks - $200
  calipers - $50
  rotor spacers - $13
  caliper spacers - $15
  brake line kit - $70
  pads - $50
  TOTAL - $398

Can anyone come up with a good argument to justify a $400 investment into option 2 over option 1? I'm worried I would still have undersprung forks with the GSXR's, however I've heard that the valving is much better, so that's a plus, and I would assume the calipers would be better.

Anyway, just brainstorming right now and I appreciate the help guys.

[ChrisK]

I also just looked and realized that racetech gold valves would be $169.99. So combined with the springs I'd still be far less than a conversion to a GSXR setup.

I should also add that I definitely do not have a money tree in my backyard. 

[Raux]

you could upgrade your front calipers to sbk calipers as well

[ChrisK]

you could upgrade your front calipers to sbk calipers as well

As in calipers from a 999 or something?

[DarkMonster620]

Over the last couple of weeks I've been learning all sorts of new things about front end dynamics, love this forum for that reason  

My 98 M900 has the adjustable Showas, however they're severely undersprung for my 210 pound self. I'd really like to get this sorted out one way or another and I'm seeking opinions on which way you guys would go. I should also say that I'm having difficulties getting my OEM calipers to work correctly, seems no matter what I do I can't get all the pistons to move at the same rate and it's causing "pulsating" when braking as well as decreased braking power.

Option 1: Purchase racetech springs that are sprung for my weight and just keep working on the calipers, withe the confidence that they'll eventually come around. Racetech springs are $114.99 I believe.

Option 2: Fit my bike with GSXR forks/calipers from around 2005-2008. To make this happen I figure:
  forks - $200
  calipers - $50
  rotor spacers - $13
  caliper spacers - $15
  brake line kit - $70
  pads - $50
  TOTAL - $398

Can anyone come up with a good argument to justify a $400 investment into option 2 over option 1? I'm worried I would still have undersprung forks with the GSXR's, however I've heard that the valving is much better, so that's a plus, and I would assume the calipers would be better.

Anyway, just brainstorming right now and I appreciate the help guys.

do you have the goldline 4 pot calipers? do you have the coffin master? if not mistaken, don't believe me, yoyodine has a rebuilt kit for these calipers but, on the master side, I would recommend an upgrade to a radial one, either accossato, brembo or why not, magura . . . and replace your lines, all of them . ..  

or as raux said, upgrade to 4/4 calipers, that is, 4 pot/4 pad . . ..

[ChrisK]

Yes I have the goldline 4-pots. I recently upgraded to a Nissin radial master.

[ChrisK]

Also, I've looked into the rebuild kit and they were like $60 per caliper I believe, IF they have them anymore.

[DarkMonster620]

then maybe, it would be time for either a rebuild or upgrade . . .

are you using your original rotors? are they clean?

is this happening after the accident?

[DarkMonster620]

Also, I've looked into the rebuild kit and they were like $60 per caliper I believe, IF they have them anymore.

if they have them, get 'em if you want to go this way

imho, is worth it

[ChrisK]

Woah, nvm, just the seal kit is $50 per caliper. If you find a kit with the pistons it's much more expensive, over $100 per caliper.

[DarkMonster620]

Woah, nvm, just the seal kit is $50 per caliper. If you find a kit with the pistons it's much more expensive, over $100 per caliper.

just get a very fine sandpaper, like 1200 and clean brake fluid to use to wet sand the pistons to clean them, this is how we 'refurbish' the pistons in the 3rd world . . . and no complaints up to now from no vehicle owner

[ChrisK]

Is it okay to remove pistons and then place them back in the original seals? I'm assuming yes.

[DarkMonster620]

Is it okay to remove pistons and then place them back in the original seals? I'm assuming yes.

take them out, replace seals . . . clean cylinders where pistons move . . .

[ChrisK]

Ugh, $50 per caliper for seals hurts...

[DarkMonster620]

beats new calipers