Rover V8 Sierra Clutch

As you can see in the picture above the Rover V8 Clutch (right) is much bigger than the Sierra clutch left.

How did I quickly and very cheaply solve this problem?

The Rover V8 has a 272mm clutch. The Sierra has a 241mm clutch. The splines are also different between the two.

This sounds like a it could well be a complete nightmare right?

As luck would have it the Ford Transit is also fitted with a 272mm clutch and a MT75 gearbox. These are available on fleabay for very little money (I paid £12, for a brand new one). A quarter of what you’d pay for either the Sierra or the Rover.

I figured for this money it was worth taking the gamble that the Transit clutch fitted the Sierra box as well.

Rover V8 with MT75 Gearbox

It did 🙂

It was also perfect sized for the Rover V8 Vitesse Clutch housing. Also good.

But hey…. Wait a minute this Transit clutch housing looks very, very similar to the Rover item.

TA DAR! They are pretty much identical. More importantly the bolt spacings are identical.

Rover V8 Transit Clutch

It’s hard to see in the above photo but these two really are a perfect match.

What a bargain!!!

My MT75 gearbox with welded on BW35 automatic gearbox is getting pretty close to be bolted up to my Rover V8 for the very first time. I tried my best to get everything aligned perfectly – but it’s still a tense wait.

Rover-V8-MT75-Gearbox

Rover V8 4x4 Haynes Roadster

The gearbox is welded and fitted! The MT75 4x4 gearbox has been TIG welded to a 1960's BW35 auto bell-housing from a P5B Rover Coupe. The welding was tricky but went very well in the end and from some angles it could be mistaken for a factory built box. ...

Rover V8 to MT75 Adaptor - part 4

This is an MT75 4x4 gearbox from a 2.0lt turbo Sierra Sapphire Cosworth. The bell-housing bolt pattern is much smaller than that of the Rover V8. Unfortunately, the bell-housing is not removable, so I am cutting it off with a hacksaw. It may seem a little Low-Tech and indeed there ...

Rover V8 to MT75 Adaptor Plate - part 3

I've been having fun converting my Rover V8 to Sierra Cosworth MT75 4x4. When you find  the correct solution to a problem, sometimes it makes previous efforts look like a waste of effort. Rover V8 to MT75 gearbox using LT77 bell-housing - Part 1 Rover V8 to MT75 gearbox using BW35 ...

Rover V8 to MT75 Adaptor Plate - part2

Will the Borg Warner 35 Auto bellhousing mate to the MT75 manual? Can I cut it up to make a Rover V8 to MT75 adaptor plate? I was having one of those mental blind-spots. For some reason, because I was trying to mate the Sierra Cosworth MT75 manual gearbox to the ...

Rover V8 to MT75 Adaptor Plate

The goal is to mate the Rover V8 up to a Ford MT75 gearbox. Therefore I had 2 choices: Use an Rover V8 to MT75 adaptor plate Use a complete LT77 bell-housing and remove the integral MT75 bell-housing and weld on a mounting plate. Seeing as I could not find anyone ...

Rover V8 Short Water Pump

A lot of people know the P6 water pump is much shorter than the SD1 but what is the super short water pump on the right? On the left is the standard Rover SD1 Water Pump. On the right is the Rover V8 Serpentine Water Pump. As you can see, ...

Rover V8 Plenum Chamber

Rover V8 PlenumThis might just look like a Rover V8 Plenum Chamber, but in fact it will enable me to judge bonnet height. The Rover V8 engine is quite tall compared to others I've looked at and I am determined not to have a huge bonnet bulge that looks like a hideous ...

MT75 Clutch Upgrade

The goal is to mate a LT77 Rover 5 Speed Bellhousing onto a MT75 4x4 gearbox. I also wanted to upgrade the clutch. Unfortunately, I have a lot of research to do. One of the first things to establish was whether the MT75 and LT77 have similar input shafts. The quickest ...

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