SV650 Brakes on a GS450

[SgtRauksauff]

I would definitely go with the SV master cylinder if you're swapping caliper/rotor. The MC is designed to move the proper amount of fluid to move the SV caliper with the proper pressure. It would be interesting to find out, though, how well it stops compared to both the stock SV with two discs, and the stock GS.

--sarge

[salty_monk]

All you have to worry about is piston bore size which is clearly marked on the master cylinder.

In this case I think you'll find it is 5/8" which is the same as the bore on the Suzuki Dual brake models.

The single brake model Suzuki uses a 14mm piston & people have used it with twin brakes but you'll find you need more lever travel for a given amount of brake & more of a "Mushy" feel to it I suspect.

[pete]

All you have to worry about is piston bore size which is clearly marked on the master cylinder.

In this case I think you'll find it is 5/8" which is the same as the bore on the Suzuki Dual brake models.

The single brake model Suzuki uses a 14mm piston & people have used it with twin brakes but you'll find you need more lever travel for a given amount of brake & more of a "Mushy" feel to it I suspect.

Good call Dan, didn't realise the SV was a dual disc setup!

Side note... did you end up looking at the Salty Monk conversion for the 450's yet?

[Big Rich]

Djg42, have you considered getting forks and just doing a dual disc upgrade? Just an idea......

And can I request pics once everything is bolted up?

[djg42]

Thanks guys!
I am considering getting the forks and doing a dual disc setup, but the chart below indicates that 1980 GS450 fork diameter is 33 and the other GS forks are bigger (is that correct?), not sure how Id make that work-unless I can find some other bike with 33mmforks and dual discs
forks are larger,

Sadly,the SV650 brakes aren't plug and play at all, and will require the same amount of work as using any other modification.
Ill definitely post pics when i get some work done on this.

"Side note... did you end up looking at the Salty Monk conversion for the 450's yet? "
I couldn't find the salty monk GS450 conversion mentioned, how can I find it?

http://scandalon.com/2009/06/motorcycle-fork-diameter-chart/

33 Suzuki GS-400 B/XB (77)
33 Suzuki GS-400 C/XC (78)
33 Suzuki GS-425 N/EN (79)
33 Suzuki GS-450 ET/ST/EX/SX/EZ/ED (80-83)
33 Suzuki GS-450 GAZ/GAD (82-83)
33 Suzuki GS-450 LT/LX/LZ (80-82)
33 Suzuki GS-450 TX/TZ/TXZ/TXD(81-83

35 Suzuki GS-550 LX/ LZ (81-82)
35 Suzuki GS-550 B/C/EC (77-78)
35 Suzuki GS-550 LN/LT (79-80)
35 Suzuki GS-550 LG (86)
35 Suzuki GT-550 J/K “Indy” (72-73)
35 Suzuki GT-550 K (KAYABA)/ L (73-74)
35 Suzuki GR-650 D/XD “Tempter” (83)
35 Suzuki GS-650 EX/EZ(81-82)
35 Suzuki GS-650 GLX/GLZ/GLD(81-83)
35 Suzuki GS-750 B/C/EC (77-78)
35 Suzuki GS-750 EX/EZ (81-82)
35 Suzuki GS-750 LT/LX (80-81)
35 Suzuki GS-750 TZ/TD (82-83)

37 Suzuki GS-500 EK/EL/EM/EN/EP/ER/ES/ET (89-96)
37 Suzuki GS-500 EV/EW/EX/EY (97-00)
37 Suzuki GS-550 LD/LF (83, 85)
37 Suzuki GS-550 ED/ESD/ES3/ ESE/ EF/ESF/ESG (83-86)
37 Suzuki GS-650 MD “Katana” (83)
37 Suzuki GS-700 EF/ESF (85)
37 Suzuki VS-700 GLFG/GLEFG/ GLFH/GLEFH “Intruder” (85-87)
37 Suzuki VS-700 GLPG/GLEPG/ GLPH/GLEPH “Intruder” (85-87)
37 Suzuki GS-750 ED/ESD (83)
37 Suzuki GS-750 LN (79)
37 Suzuki GS-750 SD “Katana” (83)
37 Suzuki GS-850 GN/GT/GX/GZ (79-82)
37 Suzuki GS-850 GD (83)
37 Suzuki GS-1000 C/EC/N/EN/ET (78-80)
37 Suzuki GS-1000GT/GLT/GX/GLX (80-81)
37 Suzuki GS-1100 ET/EX/EZ (80-82)
37 Suzuki GS-1100 ED/ESD (83)
37 Suzuki GS-1100 GZ/GLZ (82)
37 Suzuki GS-1100 LT (80)
37 Suzuki GS-1150 ES3/ESE/EF/ESF/EF2/EG/ESG (83-86)

[SVSooke]

I couldn't find the salty monk GS450 conversion mentioned, how can I find it?

Probably because he has not done any.

[pete]

Probably because he has not done any.

Errr, question was aimed at Dan because he was going to compare some measurements I gave him in another thread to see if his twinpot Kawasaki upgrade would work on the 450's...

[SVSooke]

Seems like I'm on a bit of a out of touch run today.Mind on other things.

[pete]

Seens like i'm on a bit of a out of touch run today.Mind on other things.

All good Greg, my wording wasn't exactly ideal either

[djg42]

Suzuki_Don is an expert on the subject
How do people get gs550 front ends on the GS450 when the fork sizes are different?
Or are the measurements on that chart not accurate?

[pete]

Actually what you want to do is track down CDC's scrambler thread, he has done a complete front end swap from a 550 and I believe it's pretty much a bolt on affair...

[Suzuki_Don]

The SV650 front disc will not bolt up to the GS front wheel and the SV front wheel has a three spoke setup and IMO would not look good on a GS. Probably has a different spindle size anyway. So I don't think you actually saw an SV disc on a 450, it was probably off something else or could even have been the original GS450 disc with a twin piston caliper off a different bike.

[salty_monk]

Pete - not made the measurements as yet. I will print out the thread today & stick it in my pocket as a reminder!!

[pete]

Pete - not made the measurements as yet. I will print out the thread today & stick it in my pocket as a reminder!!

Haha no rush Dan, just thought I'd ask the question while I thought of it

[djg42]

Ditched this idea and going with the double discs, any one know if the 94-06 Concours 1000 ZG-1000 caliper take 10mm-1.25 or 10mm-1.00 banjo bolts?
also, whats the deal with GS650 forks? Looks a nozzle for air on the top of the forks?

http://cgi.ebay.com/ebaymotors/?cmd=ViewItem&_trksid=p3984.m1439.l2649&item=130572785302&sspagename=STRK%3AMEWNX%3AIT