Need HELP on Plumbing Tilton MC 97 Impreza Rally Build

Im taking out the MC boster for breaks and replacing it with 2 separate MCylinders from Tylton one for the front one for the rear breaks.

Is there a write up on HOW to Run the lines (Basicaly what goes where?)

It is my first time doing it and Im not sure how or Where and what conect with what in Order for it to Work proper.

Thank You for your help

One hard line from F master to T thence to both fronts.

One line out from R master to brake limiter thence to handbrake IN then from handbrake OUT to rear firewall T then out to both wheels. Simple routing.
What sizes did you get, that's where the fun starts.

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John Vanlandingham
Sleezattle, WA, USA

Vive le Prole-le-ralliat

www.rallyrace.net/jvab
CALL +1 206 431-9696
Remember! Pacific Standard Time
is 3 hours behind Eastern Standard Time.

Yes what sizes did you go with.

I routed mine just as John said but with full hardline

Pretty much what John said. Although I just downsized to a non-ABS Subie MC with 4 channels. Two went to the fronts, one was blocked off, and one went to the rear.

I used hard lines too at first. But had a failure of the fittings between the brake limiter (proportioning valve) and the handbrake. The space between was tight with awkward angles and getting this hardline to mate perfectly was nigh impossible.



It's hard to see but that line goes in 3 dimensions. Well, at ESPR, under tarmac braking conditions, one of the fittings failed and we started puddling brake fluid into Kieran's footwell. Not good.

Once I got the car home (with no brakes at all!) I had a custom length of flex line made and replaced the kinky hard line:



Oh, and notice the bulge in the handle of the proportioning valve? Those Wilwood handles don't bend, they break. Some sort of alloy. Fortunately weldable. Ask me how I know!

Good luck.

Simon

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Simon Wright
Owner/Driver USUK Racing - Home of the USUK Racing LED Light Bars!

North America Rally Map

Quote
john vanlandingham
One hard line from F master to T thence to both fronts.

One line out from R master to brake limiter thence to handbrake IN then from handbrake OUT to rear firewall T then out to both wheels. Simple routing.
What sizes did you get, that's where the fun starts.

Limiter? Are you doing a balance bar or just dual masters.

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Grant Hughes

Quote
NoCoast

Quote
john vanlandingham
One hard line from F master to T thence to both fronts.

One line out from R master to brake limiter thence to handbrake IN then from handbrake OUT to rear firewall T then out to both wheels. Simple routing.
What sizes did you get, that's where the fun starts.

Limiter? Are you doing a balance bar or just dual masters.

If he's not a sizing ex-spurt---and there's just one.seven five around here, he better have a limiter in the rear circuit---you may use the posher term "proportioning valve"

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John Vanlandingham
Sleezattle, WA, USA

Vive le Prole-le-ralliat

www.rallyrace.net/jvab
CALL +1 206 431-9696
Remember! Pacific Standard Time
is 3 hours behind Eastern Standard Time.

Quote
simoniac
... But had a failure of the fittings between the brake limiter (proportioning valve) and the handbrake.
... Well, at ESPR, under tarmac braking conditions, one of the fittings failed

What exactly failed? The fitting cracked? line was leaking at the fitting?

Leaking at the fitting. But not truly discovered until rally was almost over. Being a new car (to me) I wasn't quite sure what to expect from the brakes. So the fault wasn't really discovered until later in the day.

The fittings were pretty much wrenched tight so I don't think there was much improvements to be made by wrenching on them even more. Decided the geometry didn't really lend itself to a hard line being there. Hence the switch to a flex line at that point (and some judcious use of a spatial adjuster on the bracket to permit better clearance).

Stomping on it on the street it seems to work great - much better feel than before.

Simon

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Simon Wright
Owner/Driver USUK Racing - Home of the USUK Racing LED Light Bars!

North America Rally Map

I have tilton 7/10 (18mm) and 5/8 (16mm) Mc

Which goes to the rear and what front?

I am sure that someone will "correct" me, but I run all flex lines with -3AN fittings. My entire system is made up of 2 lengths of hose that is easily obtained from about a half a bazillion circle track/drag race shops. That includes the lines out to the calipers. I carry 1 spare of each in the car and a handful of each in the service spares.

It's slightly more expensive but infinitely easier to deal with it you have a failure during a rally.

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"I, for one, welcome our Robot Overlords." - Philip J. Fry

Mine are plumbed as John described, no proportioning valve though just the balance bar on the pedals. Not sure if you talked to them yet but Tilton was very helpful calculating my m/c sizing. I gave them all the measurements they asked for and i bought their recomendation. I run my brake pressures pretty much even front/rear and while I won't claim it is perfect for everyone the car does brake very well and feels good to me.

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John Reed
John Reed Racing
www.johnreedracing.com
johnreedracing@gmail.com

What calipers do you have on the car? See if any info in this thread helps: Subaru Master Cylinder sizing