ATT: GEM23Q

[Gene FJ20DET]

hope this helps





>Gene
>Hello
>thanks for your enquiry.
>yes we do a front 290 and 300mm conversion for Gemini,s.
>Once you see how its done you will wonder why no one did it before.
>
>As you might have seen , the new type of commodore rotors ,being the 290mm
>by 22 VR/VS and the 300mm by 28.5 VT/VX are a hat type rotor which mounts
>on
>a separate hub.
>
>To fit these to a Gemini we make a machined K1045 steel hub which has the
>inside dimensions to take the std Gemini bearings and seals and the correct
>outer profile to carry the rotor.
>This allows us to sit the rotor as far in as possible and put the caliper
>where it fits best.
>In this case the best position actually put the caliper straight on the
>existing original caliper mounts with only a slight slotting of the VT
>caliper holes and it all bolted on.
>
>As it turned out everything clears the twin piston VT caliper but a small
>5mm spacer is needed to stop the lower control arm touching on full lock,
>you lose a little bit of turning circle but thats all.There is as small
>increase in wheel offset at 1cm per side but only a problem if you have
>wheels already nearly touching the mudguards.Min 15 inch wheels needed.
>
>We do this 300mm kit complete with calipers ,pads ,adapter hubs, rotors,
>bearings, seals and brake hoses all ready to go in two styles,
>
>4 stud for std gemini stud pattern at $770 with smooth rotors ,$990 with
>slotted and $1030 gold drilled and slotted.
>5 stud commodore pattern at $690 smooth , $910 slotted and $950 d/s.
>
>For 4 stud we start with blank VX rotor and only drill the 4 holes hence
>the
>extra cost.
>
>For master cyl you will have to change to a 1 inch unit.
>If you can retain your booster there is a Ford master which bolts on with
>small mods and a bit of a repipe,this works well.
>If you are going V6/V8 or will have to lose the existing booster to clear a
>turbo we have a nice small 1 inch tandem master which works with a remote
>VH40 type booster .It then becomes a bit of a juggle to get compatible rear
>brakes but thats what happens when modifying to this extent.
>
>We have all combinations in stock, but for the 4 stud we need to know the
>wheel centre size as this can vary and we may need to turn this down so the
>wheel will go on.
>Can take orders by credit card,or money order, its a bit heavy for COD
>post,freight to most places $40 by road.
>
As you have seen there are often many ways people find to solve problems,
some look good on the surface but for those of us in the business see
problems in finer details that make us think again.
The use of a DBA 221 (TM magna rotor) will not be as easy as it sounds. It
is a hat type rotor like the Commodore and will still need a special hub.If
they removed the std gemini rotor from the std gem hub and just sat the
Magna rotor in its place you get all sorts of centralization problems and
special machining which the customer has to arrange and make sure is
right.(Over which we have no control)It also has to bought blank and drilled
etc.
The magna rotor is also too thick and would need the pads and cast brackets
filed thinner to go over.There are similar problems with other rotors.

Therefore our philosphy is to make everything as bolt on as possible and
leave nothing for the customer to get wrong.

The Vt rotors and calipers are also readily available so that does allow us
to sell only the hubs provided they are to be 5 stud. If the client wants 4
stud we are not happy about redilling amongst all the existing holes so we
must start with blanks. (this is a stipulation of our Engineer who does our
RTA approvals)

Our hubs are K1045 high carbon steel designed to do the job, not plain mild
steel.
We will sell a pair with bearings, seals, grease caps and studs in 5 stud
comm pattern At$390 a pair, and highly recommend you get our hoses at $88 a
pair.The caliper holes will need to slotted 1mm each but do not need a
bracket to bolt on.

>Get back to me if you need more info.
> Regards Peter Koning
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