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So I've Got A Broken Cam...

htial

By htial,
in Victoria

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htial Grand Master

htial

Posted
Posted

So I had the timing belts done and the mechanic found that one of the "lugs" on the end of the Cam has broken off and jammed into the distributor... ...Lucky for me it means that my car still runs because of the way the distributor locks into the cam... ...however under heavy load I get a little bit of a "chug chug"...

Last time I put my car on a dyno I got close to 150kws at the wheels... ...Which I'm told is quite good for a stock GTS25t...

So not knowing much about Cams... ...If I was to go for some upgraded Cams... ...What should I look for and what kind of power increase could I expect???...

It's also my daily driver so I don't want anything over crazy...

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femno Grand Master

femno

Posted
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its not a distributor, its a CRANK ANGLE SENSOR.

and its the HALF CIRCLE which locates the CAS has broken off??

it wouldnt be that hard to line up the the CAS, just match the area thats broken off to the recess in the CAS shaft and put it in. When it starts you know its in right. Theres 7 or so other teeth that locate it also, so itll still work, and its not like u have to take it out regularly.

htial Grand Master

htial

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ps: still unclear where the piece of cam ended up :)

The bit that broke off is jammed in the Cam Angle Sensor (what I've always known as the distributor) shaft... ...if you pull it off and look into the shaft you can see some locator groves... ...and it's jammed in there...

The up side is that it is jammed in hard and won't come out... ...The down side is that I've been told it could last 10,000Km or 300,000Km before it fails totally...

Either way... ...it's better to learn now what I could do with it and what my options are before it fails...

dave1200 Collaborator

dave1200

Posted
Posted

I don't think I get it either. Unless you strip the spline off the cam it will never fail totally. If you take it off and you lose the alignment key then it may be difficult to get back into the correct phase but otherwise I don't think it will ever fail.

htial Grand Master

htial

Posted
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I don't think I get it either. Unless you strip the spline off the cam it will never fail totally. If you take it off and you lose the alignment key then it may be difficult to get back into the correct phase but otherwise I don't think it will ever fail.

I guess it's the "Alignment Key" that's broken off... ...It's at the very tip of the cam... ...The part that passes through the cog that the timing belt goes around...

I could go out and pull it off and take some photos... ...but I'm afraid I don't think I'd be able to put it back on right... :)

arep3 Experienced

arep3

Posted
Posted

well what can you budget for? personally ill never bother upgrading my cams as the stock gtr 1s are good. but thats rb26 cams. i dunno much about rb25 cams. Trent is a mechanic/tuner and he suggested stage 1's. maybe talk with other mechanic/tuners. talk to your mechanic if you have 1.

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