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Adjustable Cam Destroyed Cas - Wtf?

jonathon

By jonathon,
in Engines & Forced Induction

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jonathon Enthusiast

jonathon

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Hey I've been having random starting issues and after it finally showed a diagnosis code I removed the cas - and I found the the exhaust cam bolts have rubbed against the cas! Am I missing a gasket or something to give it more room?

I would have hoped the mechanic would have noticed when they were adjusted!

post-32397-0-58687600-1406294427_thumb.jpg

post-32397-0-35337900-1406294626_thumb.jpg

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jonathon Enthusiast

jonathon

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Well when I got it back from the tuner it had new bolts on the cas - so I'm thinking they replaced the original and didn't put washers back on!

I think I will be having words with them....

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jonathon Enthusiast

jonathon

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Wow.

And looking at it it appears to be set to zero. Bit hard to see in the photo though.

I think it has a small adjustment.

I've put it all together and it still won't start - the injectors ticked when the cas was spun, and there's spark in the plugs - so fuel problem?? Or would the replacement cas put the timing too far out to start it????

Chris32R Proficient

Chris32R

Posted
Posted (edited)

Piggaz is on the money. No washers inside that rubber gasket causes the cas to get too close to the cam gear. It doesn't look like there is any of the washers inside that gasket in the pics.

Edited by Chris32R
jonathon Enthusiast

jonathon

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R32-25t - I think that mark is where a washer used to be as the gasket is pretty hammered!

double check that the input shaft for the cas hasn't snapped off

double check that the input shaft for the cas hasn't snapped off

Yeah the input shaft locator is broken off in the cas - so I'm trying to line up the new cas into the shaft, but it's bloody hard!
jonathon Enthusiast

jonathon

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AF53B8B7-3F5C-424D-9AB8-F0DFBBF75FC8.png that's a washer, you can see the outline of it clearly

Ah I can see what you mean now I'm at the car - there is a small washer inbuilt into the gasket on the cam cover - if this is all that's needed I'm confused how the cas was touching the cam bolts....

89CAL Grand Master

89CAL

Posted
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can happen if the wrong washers are in there (not thick enough) but hard to say just from the pic. They look right, but you might be best off doing some measurements I think. Measure the thickness of the washers, etc. If you can source another CAS (cheap second hand one might be best) and put it in the car then turn it over by hand slowly and listen to see if it rubs it might tell you a bit more. I'd order a new seal and washers, not that expensive.Then see if it still hits

jonathon Enthusiast

jonathon

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I've now replaced the cas - as it was scored on the inside.

I have got the car briefly running with it all together - and I think it is clearing fine as no marks are on the new cas so the gasket with washes included must be fine.

On reflection, ages ago I had the car running without the cam cover for a short drive, and didn't hear / see it rubbing, but I guess it must have been - a lot of damage with only 10mins of running!

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