Vented Disc Upgrade
Vented Disc Upgrade
This is probably an easy job, but I would like a bit of info before getting started.
Father-in-Law wants to upgrade his 214 Cabbie from 238mm solid discs to 216 262mm vented discs.
Is the actual caliper the same & will I get away with just changing the discs and caliper mounting bracket from a 216 ?
Thanks in advance.
Father-in-Law wants to upgrade his 214 Cabbie from 238mm solid discs to 216 262mm vented discs.
Is the actual caliper the same & will I get away with just changing the discs and caliper mounting bracket from a 216 ?
Thanks in advance.
- Julesmat50
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Re: Vented Disc Upgrade
I am pretty sure you are not going to be able to use any of the main components, the solid discs have a narrower gap between the piston and the caliper mounting points and a vented disc will simply foul. A vented disc is close to twice the thickness of a solid one, so If he wants to swap to vented discs, he will need to change all 3 components, the disc, caliper and carrier.
Current 418GSD Turbo - Flame Red
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Current 418SLD Turbo Tourer - Diamond White II
Previous M237JWP 418SLD Turbo - Nightfire Metallic RIP
Re: Vented Disc Upgrade
May need to change the hubs too
214 Sprint track car
216 GTi track car
216 GTi DOHC
216 GTi Dunlop challenge race car
216 GTi track car
216 GTi DOHC
216 GTi Dunlop challenge race car
- Johnny 216GSi
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Re: Vented Disc Upgrade
The hubs (knuckles) are different on a 214. However, the approach Rover took with the knuckles and front ARB was to keep the datums the same and increase metal thickness to make everything stiffer. I think (and it's only a "think" - not 100% sure at all) 214 knuckles are just a "spindlier" version of 216 knuckles., so the mounting faces are the same. Maybe someone else can confirm this?
Having said that, the calliper carriers AND callipers are DEFINITELY different - you need to account for purchasing both to do the disc upgrade , at the very least.
216 knuckles are NLA if they are different, so you'd need to find a 216 donor car - this would also serve as a source of callipers and carriers. To be on the safe side, I'd say "take the lot" off a 216 and it will bolt onto the 214.
Having said that, the calliper carriers AND callipers are DEFINITELY different - you need to account for purchasing both to do the disc upgrade , at the very least.
216 knuckles are NLA if they are different, so you'd need to find a 216 donor car - this would also serve as a source of callipers and carriers. To be on the safe side, I'd say "take the lot" off a 216 and it will bolt onto the 214.
Rover 216GSi K reg. Flame Red over Tempest Grey


Re: Vented Disc Upgrade
Thanks chaps,
I recently stripped a 216 ( that's why he asked ) luckily I kept the front struts complete. Woz hoping it would be just a disc & caliper carrier swap.
Oh well looks like a complete strut swap then.
I recently stripped a 216 ( that's why he asked ) luckily I kept the front struts complete. Woz hoping it would be just a disc & caliper carrier swap.
Oh well looks like a complete strut swap then.
Re: Vented Disc Upgrade
You're correct - the solid disc knuckle is a different forging to the vented disc knuckle - so Kris is doing the upgrade in the simplist way.Johnny 216GSi wrote: ↑Mon Oct 29, 2018 2:22 pm The hubs (knuckles) are different on a 214. However, the approach Rover took with the knuckles and front ARB was to keep the datums the same and increase metal thickness to make everything stiffer. I think (and it's only a "think" - not 100% sure at all) 214 knuckles are just a "spindlier" version of 216 knuckles., so the mounting faces are the same. Maybe someone else can confirm this?
Having said that, the calliper carriers AND callipers are DEFINITELY different - you need to account for purchasing both to do the disc upgrade , at the very least.
216 knuckles are NLA if they are different, so you'd need to find a 216 donor car - this would also serve as a source of callipers and carriers. To be on the safe side, I'd say "take the lot" off a 216 and it will bolt onto the 214.
To retain brake balance under harder braking the brake PCRV (Pressure Concious Reducion Valve) from the 216 should also be transferred across.
I like Twin Cams, Single Cams, Turbos and 5-cam VVCs 
Re: Vented Disc Upgrade
Done this mod and the centre of the hub to the caliper bolt holes are a different in length , 216 hubs the way to go .
As any one fitted rear disc on a cabby ? Got all the bit to do this I think , rear arms of a 45 etc just wondering if there were any issues . ie hand brake cable .
As any one fitted rear disc on a cabby ? Got all the bit to do this I think , rear arms of a 45 etc just wondering if there were any issues . ie hand brake cable .
- RoverRevival
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Re: Vented Disc Upgrade
i have discs on the back of my cabby


Re: Vented Disc Upgrade
I am planning to do the rear disc brake conversion on my cabby in the spring. I removed the units complete from the donor car. Yes the handbrake cables are different on the disc to the drum rears, so you will need them too.






