Quote: Originally Posted by NZ_GTS [View Post] Would re-boring a 1inch master cylinder (to make it oversize) do anything? I have the standard 1inch m/s with the VT twin pots, I haven't really driven the car more than a kilometre, but the brakes didn't feel that great. I only ask as I have an RB25DET in the bay, and there is a gnat's c0ck clearance between the booster and intake plenum, which means it'll be a major pain to change the booster. We used to do this years ago before we started with the VT booster modifications.You will need a good resleever because you do not want the bore machined out to big so it goes into the proportioning valve wall and also you will need new pistons and seals made for the larger bore.As you can see it can be done but very tricky. We have the 3 pipe adapters for the VT master cyl and we charge $55 which includes delivery in Australia.If you have a flaring tool you can reflare the brake pipes so the adapters are not needed.We also have the spacer for the VT master cylinder to fit to the VS booster so you don't have to cut the booster pushrod and this is $40 delivered.

Quote: Originally Posted by LAZYASS [View Post] We used to do this years ago before we started with the VT booster modifications.You will need a good resleever because you do not want the bore machined out to big so it goes into the proportioning valve wall and also you will need new pistons and seals made for the larger bore.As you can see it can be done but very tricky. We have the 3 pipe adapters for the VT master cyl and we charge $55 which includes delivery in Australia.If you have a flaring tool you can reflare the brake pipes so the adapters are not needed.We also have the spacer for the VT master cylinder to fit to the VS booster so you don't have to cut the booster pushrod and this is $40 delivered. Thanks for that. Do you think the result of the rebore is as good as the booster upgrade? Just looking at my options at this stage as modifying the master cylinder would be a lot less work than removing the booster. Becuase of the way the RB25DET sits, I think I would have to lift the engine off of its mounts in order to remove and fit a new booster.

Quote: Originally Posted by NZ_GTS [View Post] Thanks for that. Do you think the result of the rebore is as good as the booster upgrade? Just looking at my options at this stage as modifying the master cylinder would be a lot less work than removing the booster. Becuase of the way the RB25DET sits, I think I would have to lift the engine off of its mounts in order to remove and fit a new booster. I can't remember the bore size we used to get out of them as it was along time ago but to be honest the VT booster and master cylinder is better as it has a larger bore size and more power from the booster.Do it right and do it once i say.

racebrakes i got a quote from you and you were $60? This was from your website though?

Quote: Originally Posted by zac320 [View Post] racebrakes i got a quote from you and you were $60? This was from your website though? Please do not confuse us with any other Race Brakes as we do not have prices on our website and we have no association with them at all sorry mate.You can ring me if you want any help or info Our fittings are $15each x 3 = $45 and freight is $10 in a 500gm Aus Post Satchel

does any one know a place in melbourne who can supply me with the bracket that goes onto the VT booster so it will bolt into the VL

to run 330mm rotors I would say you would need an adaptor plate to space the calipers out further

i recnetly have done this conversion using vs booster and vt master just reflared the lines works a treat and couldnt live with out it now, and thanks to this thread made it so easy

hey guys... im sooo lost.... I just went out to my car... it looks like the vt master wont align with the brake lines..??? am i just lost or? Am i meant to be bending them after the vt master goes is all in ??

yeh u got to bend them so they do line up just take your time wen u do it so u dnt crimp the line

Quote: Originally Posted by ledouche [View Post] yeh u got to bend them so they do line up just take your time wen u do it so u dnt crimp the line Thanks mate.... just wanted to make 100% sure.. does it matter which one lines up?

Hey guys though id let yous know i have this setup VS booster/VT Master and line adapters, works brilliant but im parting out my car $120 Cheers

muffin from wat i remeber the back brake line is bigger so it can only go in one and the front to dnt mater as long as they dnt leak. on the vt master the front brakes go closest to the firewall one is above the other below and the single one on it own at front closer to headlight is the back brakes.

Hey guys will this fit a V8 vb and will the line adapters for the vl be the same? Cheers

Quote: Originally Posted by ledouche [View Post] muffin from wat i remeber the back brake line is bigger so it can only go in one and the front to dnt mater as long as they dnt leak. on the vt master the front brakes go closest to the firewall one is above the other below and the single one on it own at front closer to headlight is the back brakes. Thanks mate.. yeh i took a pic of mine and some on the net and realised what i have to do .. After going to the wrekers and then slicing my hand open i sort of though ... hey this wont line up and in this entire thread it had no mention of bending the lines and im like surely someone would of mentioned it... rather be safe the sorry - espcially trying to remove the back brake line all good - Thanks again Btw mate just offered me a brand new one with a booster for $120 - Hes not 100% sure its a vs booster... any part numbers i can look for? Thanks in advance

vs will be plastic and others will be metal

Thanks once again Some original photos have not been recovered yet.

no probs

Did you choose the grind or spacer options? for the booster diaphram

i cut it then did the slot as shown as the master cylinder looked nicer not having spacer i think the hardest part bout the whole thing was getting to one of the booster bolts that go through the firewall it was just in prick of a spot other then that i love how it stops now even though im still repin drums on the back