Dale at Prestige Repairing My Variators

Oneball

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4,493
It changes the relationship between the drive sprocket and the camshaft. Thereby adjusting the valve timing. Only the inlet in this case.
 

rs48635

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2,161
It changes the relationship between the drive sprocket and the camshaft. Thereby adjusting the valve timing. Only the inlet in this case.
Given that cam chain speed is constant the device on end of (inlet) shaft must change relationship wit ith the shaft it surrounds. Wonder if it changes between two fixed degrees using (switched) oil pressure?
 

Oneball

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4,493
Given that cam chain speed is constant the device on end of (inlet) shaft must change relationship wit ith the shaft it surrounds. Wonder if it changes between two fixed degrees using (switched) oil pressure?
That’s how the BMW vanos system works. This is the internals of that.

6747367474
 

rs48635

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2,161
Thanks! Just watched YouTube videos to get an idea. One shows factory method to replace timing chain using all the right gear. the other had 'local mechanic' changing a variatior using few specialist tools. Unless mole grips locking the camshaft is special.
 

Oneball

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4,493
:eek:

I don’t know how much a Maserati locking tool is but this is my BMW one they’re about £40

67478
 

TimR

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1,688
Locking makes sense...That should be in the Tool thread.
Moleys not the best idea...!!?!
Whacking it with an impact doesnt appeal much either, to my way of thinking..
Course, Ive never had to do one, so what do I know...?!
 

flat-12

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119
I've seen various methods used to "lock"cams in place. When I did the timing belts on an older Audi, the engine had to be a top-dead-center, and then a cam locking bar bolted in place - pins in the bar engaged holes in the cam shaft. When doing belts on the Ferrari flat-12 engine, I made some nylon blocks which wedged in between the intake and exhaust cam sprockets - worked great. I've also seen some guys use a two vice grips, one clamped down in each cam, with the vice grips in an "X" position and taped together....not crazy about this method.
 

Michael

Junior Member
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284
As soon as the world returns to 'normal' the variators will come back from Maserati and the rocker covers from the paint shop. The sharp-eyed amongst you will have spotted just how stingy Maserati is with the paint on these cars. The bodywork hidden by the plastic engine cover isn't fully painted in blue.
 

philw696

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13,742
As soon as the world returns to 'normal' the variators will come back from Maserati and the rocker covers from the paint shop. The sharp-eyed amongst you will have spotted just how stingy Maserati is with the paint on these cars. The bodywork hidden by the plastic engine cover isn't fully painted in blue.
The lack of paint is a real annoyance to me not just under the bonnet too.
Toyota don't even paint behind bumpers anymore.
Saves so much money on paint you wouldn't believe.
Probably good for the planet too.
 

TimR

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1,688
I don’t see why it’s such a big deal. It’s just for looking at!
The shells are electro dipped pre paint anyway...

What I find a bit silly is stuff like ABS/speed sensor connector blocks, regardless they are IP64 ( or whatever) in the wheel arches...Why they don’t put these electrical things in the engine bay ...it’s right there !.?