308mm brakes

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308mm brakes

by KERR_SE9 » Wed Jan 14, 2015 1:04 am

Hi folks, I have a question regarding the 308mm brake upgrade for my calibra turbo , I can buy the carrier brackets from lmf and new 308mm discs,can I use my own calipers? And If yes, how does this make the brakes any better, correct me if I'm wrong but if I use my standard calipers and pads, how does a larger disc (albeit clamped by the same amount of pad) improve the braking effect??
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Re: 308mm brakes

by Callyman » Wed Jan 14, 2015 8:06 am

As long as your brakes where 288mm the calipers will fit.
Going up to 308 (apart from looking a bit better) decreases the amount of force required to stop the rotation.
think of it this way. A small steering wheel is harder to turn than a bigger one...All about leverage.
The further away from the fulcrum you apply a force the less force is required to achieve the same result.
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Re: 308mm brakes

by Mark1 » Wed Jan 14, 2015 9:02 am

What Andy said, i Have them on mine and it does stop quicker
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Re: 308mm brakes

by Chavtastic » Wed Jan 14, 2015 10:22 am

Better pads would be a better purchase in my opinion

Or both together would be even better
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Re: 308mm brakes

by KERR_SE9 » Wed Jan 14, 2015 12:42 pm

I currently have ebc discs and ferod ds2500 pads, looking for a little more feel
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Re: 308mm brakes

by Callyman » Wed Jan 14, 2015 1:43 pm

Fresh fluid (if not already) can help a lot.
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Re: 308mm brakes

by rips » Wed Jan 14, 2015 4:21 pm

KERR_SE9 wrote:I currently have ebc discs and ferod ds2500 pads, looking for a little more feel

Pagid blue RS4.2 are supposed to be really grippy, even from cold. Sadly they are expensive too.

The downside of upgrading pads is that you are asking the setup to dissipate more heat (because that is what friction brakes do).
Many GMs are on the limit for disc heat dissipation so upgrading the pads can cook them. I cracked a set on my Cav CDi. I don't know about 288's, they may well be fine.
Bigger discs provide a larger surface area which assists heat dissipation.
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Re: 308mm brakes

by KERR_SE9 » Thu Jan 15, 2015 1:42 am

Hi, I've ordered the brackets from lmf,going to order new ebc discs ( it's what I currently have), can anyone confirm if need the vectra 2.6 calipers or use my own? As I'm looking at contradictory info, so e people have used the vectra calipers some the calibra ones.
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Re: 308mm brakes

by vec 160 » Thu Jan 15, 2015 6:41 am

KERR_SE9 wrote:Hi, I've ordered the brackets from lmf,going to order new ebc discs ( it's what I currently have), can anyone confirm if need the vectra 2.6 calipers or use my own? As I'm looking at contradictory info, so e people have used the vectra calipers some the calibra ones.


I have 308s on my Vectra and use the calipers the original 288 discs that are fitted on it and they work fine.

HTH

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Re: 308mm brakes

by DanSE4 » Thu Jan 15, 2015 10:26 am

KERR_SE9 wrote:can anyone confirm if need the vectra 2.6 calipers or use my own?


Your calipers will be fine (assuming you currently have 288mm discs), It's the carriers from a Vectra 2.6 that can be used as an alternative to buying them from LMF.
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Re: 308mm brakes

by bennymac » Thu Jan 15, 2015 3:23 pm

And don't forget some saab's use them too.
First set of 308's I bought years ago from GM had SAAB stamped round the flange face.
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Re: 308mm brakes

by v6 steve » Thu Jan 15, 2015 8:01 pm

bennymac wrote:And don't forget some saab's use them too.
First set of 308's I bought years ago from GM had SAAB stamped round the flange face.



iv bought a few set from saabs i always keep an eye out when at the scrapyards

KERR_SE9 wrote:Hi, I've ordered the brackets from lmf,going to order new ebc discs ( it's what I currently have), can anyone confirm if need the vectra 2.6 calipers or use my own? As I'm looking at contradictory info, so e people have used the vectra calipers some the calibra ones.



your std turbo ones will fit
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