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Rear brake banjo bolt size?

Started by VaughanCustoms, May 30, 2013, 07:24:28 PM

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VaughanCustoms

May 30, 2013, 07:24:28 PM
So the PO had the rear brake hose disconnected and I am missing the rear banjo bolt so curious to know what size it is? I also forgot what the smaller hose connection on the air box hooks up to? Lol tore the bike down and for some reason didn't mark it or make note of it. Thanks guys
Built not bought is always my motto.
1967 Mercury Cougar 289 4V bored .30 over forged internals full ground up build
1998 Ford Mustang Cobra convertible DOHC 4.6 .30 over forged internals, future turbo car. 400 rwhp.
1984 Yamaha FJ1100 street fighter V&H exhaust, re-jet, K&N pods.

aviationfred

#1
May 30, 2013, 07:29:12 PM
If memory serves me correctly, the stock Yamaha caliper uses a 12mm course thread Banjo bolt.

Fred
I'm not the fastest FJ rider, I am 'half-fast', the fastest slow guy....

Current
2008 VFR800 RC46 Vtec
1996 VFR750 RC36/2
1990 FJ1300 (1297cc) Casper
1990 VFR750 RC36/1 Minnie
1989 FJ1200 Lazarus, the Streetfighter Project
1985 VF500F RC31 Interceptor

oldktmdude

#2
May 30, 2013, 10:54:34 PM
Quote from: aviationfred on May 30, 2013, 07:29:12 PM
If memory serves me correctly, the stock Yamaha caliper uses a 12mm course thread Banjo bolt.

Fred
Fred, I think your memory may have led you astray. The rear brake banjo bolt size is 10mm diameter with 1.25mm pitch. Length is about 23mm. The hex size is 12mm. Maybe that's where the confusion arises from?     Pete.
1985 FJ1100 x2 (1 sold)
2009 TDM 900
1980 Kawasaki Z1R Mk11 (sold and still regretting it)
1979 Kawasaki Z650 (sold)
1985 Suzuki GSXR 400 x2 (next project)
2001 KTM 520 exc (sold)
2004 GasGas Ec300
1981 Honda CB 900 F (sold)
1989 Kawasaki GPX 600 Adventure

aviationfred

#3
May 31, 2013, 12:01:33 AM
Sorry about that. I am used to referring to bolt sizes by the hex/wrench size.

Fred
I'm not the fastest FJ rider, I am 'half-fast', the fastest slow guy....

Current
2008 VFR800 RC46 Vtec
1996 VFR750 RC36/2
1990 FJ1300 (1297cc) Casper
1990 VFR750 RC36/1 Minnie
1989 FJ1200 Lazarus, the Streetfighter Project
1985 VF500F RC31 Interceptor

Firehawk068

#4
May 31, 2013, 01:24:07 AM
The smaller hose connection on the airbox(on the right side) should be the breather hose. It runs to a fitting on the top of the gearbox on the right side........kind of a pain in the ass to hook back up, as there is not alot of room to get your hands in there..............
Alan H.
Denver, CO
'90 FJ1200

VaughanCustoms

#5
May 31, 2013, 06:47:44 AM
Ok thanks guys, the air box the bigger hose goes to the crankcase but there is a smaller hose connection on there as well and I am not sure where that one goes.  :cray:
Built not bought is always my motto.
1967 Mercury Cougar 289 4V bored .30 over forged internals full ground up build
1998 Ford Mustang Cobra convertible DOHC 4.6 .30 over forged internals, future turbo car. 400 rwhp.
1984 Yamaha FJ1100 street fighter V&H exhaust, re-jet, K&N pods.

Firehawk068

#6
May 31, 2013, 02:19:12 PM
It is probably just a water drain out of the bottom?
I can't recall a smaller hose hooked to mine, but it's been a couple years since I've had the airbox out.
Alan H.
Denver, CO
'90 FJ1200
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