vs brake discs onto vp???

[lowvpcal]

gday yall
i have front and rear brake calipers from a vs 215i senator (twin piston corvette ones) im ready to put them on my car but im not sure about the discs. the calipers also came on the vn group a.
im not sure what discs i should be getting because the vs had 328x28mm front discs and 280x20 rears i think and vn group a had 330mm with the same caliper, i think lol
basically my question is will the vs spec 328x28mm and 280x20mm fit with no problems onto my vp v6? i also have a vp v8 master cylinder (1" i would assume) will that fit onto my v6 booster and aid the bigger calipers?

[pow3rslave]

Not sure about the discs, but for the booster, i'd be putting on the the booster and MC.

[lowvpcal]

bugger thats alot of figging around ah well

[immortality]

the VR/VSmodels use a different front brake rotor design then the VB-VP commodores. the callipers should fit but you would need to use proper VN GRP A rotors to suit or use VT style conversion hubs to use the VS style rotors. the rears should bolt on but i'm not 100% certain on that

[Reaper]

Hoppers do a conversion to the later style hubs that take the slip on rotors. Highly recommended as those VN Group A rotors cost a heap.

Reaper

[lowvpcal]

thanks reaper ill have a look at that on the week end

[gslrallysport]

They're not that bad... a pair of slotted rotors is $289. There's ALOT worse in the HSV range of rotor than that.

[lowvpcal]

thats pretty good! is that front or rears? is it only the front that will need the hub conversion?

[ryan21]

you will want to do the v8 mc and booster i did the vn v8 brake upgrade and just changed the mc it was like pushing against a brick wall until i changed to the v8 booster.

[lowvpcal]

thanks ryan
is it just the front hubs that need to be changed??

[klampy]

the VB>VP front discs are an integral hub/disc unit, meaning the wheels hub and bearing assembly is also the disc brake. the VR> has a separate hub that the disc slips on over the studs and then the wheel bolts to that. so VR on disc brakes wont just swap over as a unit, however, with a slight modification to the bearing in the strut top, im about 80% sure that the VR> front struts and ball joint will bolt onto the VN/VP control arms (and then also allow camber adjustment) seems like a bit of a stuff around but would be the cheaper option to buying an adaptor package to make it work.

i had VR control arms and struts actually mounted in a VN i had, but the bearing in the strut mount was too small so the struts just sort of sat there ( i never got to drive it BTW ) so if you were to use VR control arms, i could guarantee it would fit and but couldnt 100% guarantee that your brakes would fit. however it would be much easier to adapt a VRfront end than it would be to adapt a VN type fornt end.

phew. lol

[ryan21]

my advice. is spend the extra cash and do the vt upgrade with the vt booster as well unless you can get the whole setup cheap like me i paid $5 for the entire v8 strut assembly and $50 for mc and booster. the v8 mc,booster and calipers etc made it a lot better compared to what it was but after you drive your mates vy its still disapointing to say the least..

[lowvpcal]

a mate of mine is stripping a vp v8 calais and said i can have whatever i want i just have to take it off, i can still get the booster but i didnt think i would need it lol
as for the vt upgrade ive had that before and didnt like it at all plus i got the senator calipers for $20!
i havent had time to get onto hoppers stoppers does anyone know the rough price of the adaptors?
i was thinking about retro-fitting the vr-vs struts onto the vp klampy, but like you said and from the info ive gathered it seems like a difficult and unsafe route to travel

[immortality]

VR/VS have a wider front track, therefore the control arms arm longer (as they use the same mounting point in the K frame). you could drill new mounting points in the K frame, however then your going to have bump steer issues because the steering rack with is going to be to wide.

K-Mac do a adjustable strut top to suit late model commodores which uses a 3 bolt design like the early commodores. this may be a viable option. i've spent some time looking into this modification but haven't yet found a cheap viable way to do it using factory parts to keep the correct track width without having to customise stuff

[Cheap6]

We might be drifting a little off topic here given that it's about fitting VS Senator brakes to a VP. I don't think that the wider track would be an issue as VP/VQ with IRS and VN Grp A and SV5000 run a track width close to VR-VS (using more positive wheel offset). Good used steering racks (tie rods) are pretty cheap. You could also swap in a VR or VS rear axle to match.

More difficult is to get the top of the strut as far back as it is in the VR-VS. Park a VN-VP next to a VR-VS or measure and I think that you are going to run into sheet metal before you get the strut top as far back as it needs to go to maintain the VR-VS caster.

To do it right would involve swapping in the strut towers from a VR-VS (the rest of the inner structure is essentially the same bar a few minor creases); easy for any panel shop, even possible for a skilled amateur, but beyond a simple weekend "bolt on".

I think the VN-VP to VR-VS hubs are around $300 per set but may be sized to suit the VT discs with a bigger centre hole. They might be able to do custom versions though.

The DBA catalogue, available online, has sufficient dimensional information to determine if the Senator calipers can be used with the VN Grp A/SV5000 discs.

[lowvpcal]

thanks guys i think i might just get the discs with hub adaptors and go from there lol but i do seriously appreciate all the info and time out you have all taken to help me
dave