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| To boost or not to boost? https://ausmini.com/forums/viewtopic.php?f=2&t=91371 |
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| Author: | Jonnoh [ Sat Dec 26, 2015 10:25 am ] |
| Post subject: | To boost or not to boost? |
Hi, I hope I do not say the wrong thing this time, but I am a bit conflicted regarding the need for a brake booster. I appreciate that all it does is assist your right leg and in theory aren't mandatory. I was planning 7.9" KAD solid discs which are hideously expensive but look terrific. I would like things to be simple so if I can get by without a booster I would, similarly it would be nice to have some spare room under the bonnet. Without driving one it is hard to know whether I can get by without one or not! I could retrofit one. Anyone out there who does not have a booster and is comfortable with this? Just wondering what people's thoughts are. Cheers Jon |
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| Author: | gtogreen1969 [ Sat Dec 26, 2015 10:57 am ] |
| Post subject: | Re: To boost or not to boost? |
I don't have a booster and I have elcheapo pads that came in the kit. My brakes pull up well and the pedal effort is the same as most old cars and trucks I have driven. The only change I will make is to go to the greenstuff pads. (Things may change when I get to 60 years old) |
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| Author: | mickmini [ Sat Dec 26, 2015 11:29 am ] |
| Post subject: | Re: To boost or not to boost? |
Similarly, i don't have the booster, 7.5" Cooper S brakes and never had a problem with pedal effort. My only problems with the brakes is when i attempted to put a Tilton adjuster in the line to the rear, which does not have enough available adjustment. It is made for a much heavier car with much more rear bias than you could possibly use in a Mini, so screwed up the balance badly. Have gone back to a standard limiting valve to the rear, and will make a Vizard adjustable limiting valve one day. |
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| Author: | Jonnoh [ Sat Dec 26, 2015 1:36 pm ] |
| Post subject: | Re: To boost or not to boost? |
OK guys. Thanks. I am planning on using the minispares adjustable variety which is only a little more expensive than the standard valve. My previous mini 20 years ago used to lock the rear wheels so easily, especially in the wet or on gravel roads. It wasn't until I had to change the wheel cylinder that I found it was fitted with 3/4" cylinders. Changing to 5/8 was better but I still couldn't get anywhere near locking up the front before the rear would slide down the camber.. It will be nice to see how well they work if I can set them up properly. |
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| Author: | drmini in aust [ Sat Dec 26, 2015 2:05 pm ] |
| Post subject: | Re: To boost or not to boost? |
I ran Greenstuff pads for years on S discs with no problems. For road use and track days. But you do need a fair pedal effort, I reckon I would have needed to use both feet to get front brake lockup in the dry. After years of looking at a recond VH44J sitting on my shelf, I finally bit the bullet and fitted it. Now, the brakes feel like a modern car.  I had no room under the bonnet due to the `matic heater, so I put it inside under the dash. |
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| Author: | Jonnoh [ Sat Dec 26, 2015 2:24 pm ] |
| Post subject: | Re: To boost or not to boost? |
Hi DrMini, yes the heater does take up most of that side! I'm planning on replacing that with something small inside the car. If you do need that much pedal effort maybe I do need a booster! Not much point in having brakes that good if you can't plant your foot hard enough to use it all.. I recall my previous mini seemed to have quite strong boost, was tricky driving it in car parks etc without jerking too much... It had a PBR booster but I was suspicious that it wasn't from a mini. |
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| Author: | drmini in aust [ Sat Dec 26, 2015 2:30 pm ] |
| Post subject: | Re: To boost or not to boost? |
It's easy to fit the booster inside the car, most awkward bit was drilling 2 holes through the firewall in the right place to hold the booster. Connection from the firewall bulkhead to booster is 2 std Mini front brake hoses.  
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| Author: | Jonnoh [ Sat Dec 26, 2015 2:43 pm ] |
| Post subject: | Re: To boost or not to boost? |
Yes, a good conversation piece for the passenger also I guess. I need to think about that one..
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| Author: | Curly [ Sat Dec 26, 2015 5:13 pm ] |
| Post subject: | Re: To boost or not to boost? |
gtogreen1969 wrote: I don't have a booster and I have elcheapo pads that came in the kit. My brakes pull up well and the pedal effort is the same as most old cars and trucks I have driven. The only change I will make is to go to the greenstuff pads. (Things may change when I get to 60 years old) I've passed that milestone  and still don't feel the need for a booster, even with race pads. I'd set your car up without the added complication of a booster and see how it feels - you can always add the booster later if you suddenly loose the strength in your legs.
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| Author: | Harley [ Sat Dec 26, 2015 5:14 pm ] |
| Post subject: | Re: To boost or not to boost? |
Does it make a blow off noise every time you step on the brake? 
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| Author: | Jonnoh [ Sat Dec 26, 2015 5:52 pm ] |
| Post subject: | Re: To boost or not to boost? |
I think maybe I should toss a coin? Hmm...yes I could always add one later..... just need to leave enough room for it in case! |
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| Author: | drmini in aust [ Sat Dec 26, 2015 6:20 pm ] |
| Post subject: | Re: To boost or not to boost? |
Harley wrote: Does it make a blow off noise every time you step on the brake? WHAT? I CAN'T HEAR IT for the induction and other noises.
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| Author: | 68Rusty [ Tue Dec 29, 2015 6:49 am ] |
| Post subject: | Re: To boost or not to boost? |
If you have 4 adults in the car you will particularly notice extra pedal effort then. |
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| Author: | Convertible Mini [ Wed Dec 30, 2015 9:41 am ] |
| Post subject: | Re: To boost or not to boost? |
BRAKE BOOSTER IDENTIFICATION The letter after VH44 is the identification for each variant. The variations are mainly mounting points and output pressure. VH44 = 820psi output pressure, 3/4" bore VH44B = 950psi, 3/4" bore (The B was sold by BMC as an accessory for most 60s cars and also by other manufacturers) VH44D = 780psi, 7/8" bore VH44E = 1080psi, 5/8" bore VH44F = 950psi, 3/4" bore VH44G = 710psi, 7/8" bore VH44J = 1270psi, 5/8" bore VH44P = 820psi, 3/4" bore There was also variations in cracking pressure and a few other things. |
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| Author: | Jonnoh [ Wed Dec 30, 2015 11:39 am ] |
| Post subject: | Re: To boost or not to boost? |
Convertible Mini wrote: BRAKE BOOSTER IDENTIFICATION The letter after VH44 is the identification for each variant. The variations are mainly mounting points and output pressure. VH44 = 820psi output pressure, 3/4" bore VH44B = 950psi, 3/4" bore (The B was sold by BMC as an accessory for most 60s cars and also by other manufacturers) VH44D = 780psi, 7/8" bore VH44E = 1080psi, 5/8" bore VH44F = 950psi, 3/4" bore VH44G = 710psi, 7/8" bore VH44J = 1270psi, 5/8" bore VH44P = 820psi, 3/4" bore There was also variations in cracking pressure and a few other things. Yes I thought they had different boost pressures, and the mounting studs could be on either side... The one I have on the shelf is a VH44JA which I was told is for a mini.. I guess a booster isn't just a booster. Jon |
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