Anyone know what these roller throttle bodies are/for/from?!

[Renton]

Pals of mine bought a number of Lista work benches with storage cupboards when the remains of TWR was auctioned off.
These rather nice twin-barrel throttle bodies came as part of the lot and we're wondering if anyone knows anything about them?

We're guessing, judging by the size, they're off of some sort of V8 racer..?

The ports are 57mm apart and 57mm wide on the engine side. To give that some perspective, a VAG 20V turbo has ports around 35mm apart. The unit itself is 47cm long.

Any help identifying who made/makes them and what application they're for would be much appreciated.

[anonymous-user]

As you say, the engine they are from must have a large bore, so either some sort of specialist race engine or perhaps something like the Aston V8 (70's/80's version ??)

[Mattt]

Do many production cars use roller throttles? Never heard of any before.

[anonymous-user]

No, they are deffinately "race" parts only, they even have the TRW logo cast into them!

[garagewidow]

are they conventional roller bodies?(if there is such a thing)
looks like they have two rollers in each bore seeing as the bore is elliptoid like.

[stevesingo]

What is the distance between the injector bosses? This will give a better indication of bore centre spacing.

Steve

[yoshimisumi]

That's a Grainger and Worrall logo if it helps at all - they may have just cast it
http://www.gwcast.co.uk

[Renton]

Max_Torque said:

No, they are deffinately "race" parts only, they even have the TRW logo cast into them!

Do they?

garagewidow said:

are they conventional roller bodies?(if there is such a thing)
looks like they have two rollers in each bore seeing as the bore is elliptoid like.

Correct. They have two rollers which meet in the middle, we've not seen that before.

yoshimisumi said:

That's a Grainger and Worrall logo if it helps at all
http://www.gwcast.co.uk

It certainly does!

We thought it was some sort of 'MY' logo!

Nice one

[Yuxi]

Renton said:

Max_Torque said:

No, they are deffinately "race" parts only, they even have the TRW logo cast into them!

Do they?

garagewidow said:

are they conventional roller bodies?(if there is such a thing)
looks like they have two rollers in each bore seeing as the bore is elliptoid like.

Correct. They have two rollers which meet in the middle, we've not seen that before.

yoshimisumi said:

That's a Grainger and Worrall logo if it helps at all
http://www.gwcast.co.uk

It certainly does!

We thought it was some sort of 'MY' logo!

Nice one

Not sure Grainger's will be much help, what with NDAs etc. and the fact they cast prototype and low volume engine components for just about every engine design/development company in the country.

As stated, the key is the injector spacing, hence bore spacing.

[Renton]

If the inlet ports are 57mm wide and 57mm apart I'm guessing the injectors will be 114mm apart.
Will confirm on Monday.