Cam Angle Sensor Question

[fletch63]

Can anyone help me out please

I need to know if cam angle sensor in R33GTST

is keyed (ie it only goes in one position)

or is it like a gear that can be inserted

in any position.

Any help would be appreciated

[jiffo]

Well actually it's both.

The drive from the exhaust cam is a spline, but there is also a locating lug incorporated in the spline which aligns with it's mating half on the CAS.

The locating lug means you can only fit the CAS back onto the spline in the one spot.

But if for some reason the lug has been removed or damaged, you can still run the CAS perfectly as it's driven by the spline.

You just need to work out it's correct position and away she'll go.

[JonnoHR31]

tip of the cam has a half moon locator which often breaks off. so if its still there it can only go in one position, if its broken you need to line it up in the correct position before inserting it.

[RRob]

Some really late 33's had the plastic CAS like r34.

[fletch63]

Well actually it's both.

The drive from the exhaust cam is a spline, but there is also a locating lug incorporated in the spline which aligns with it's mating half on the CAS.

The locating lug means you can only fit the CAS back onto the spline in the one spot.

But if for some reason the lug has been removed or damaged, you can still run the CAS perfectly as it's driven by the spline.

You just need to work out it's correct position and away she'll go.

So if my timing is too advanced and I am at the end of adjustment

I suppose the timing belt must be one tooth out

I thought maybe the CAS could be put in at the wrong position

I suppose it still could be if the lug you mention is broken

But probably more likely the belt after recent change

Probably leave it to the pros and not bother taking the CAS out to have a look

What do you guys think

[Simon-S14]

belts a tooth out on one of the gears...