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R32 Cas Problem

vifer

By vifer,
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vifer Contributor

vifer

Posted
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hi -

Pulled off my CAS to diagnose a no start problem and discovered a half broken splined shaft in it. I tried spinning the CAS shaft by hand but it seems siezed hence why it broke the spline.

I had a look with the torch inside the exhaust cam where the CAS goes and noticed the other side of the broken spline shaft. I tried picking the broken piece with a pick tool but it wont budge.Not sure if it can.

Could someone pls explain if that splined shaft is part of the Camshaft? Cause it doesnt appear part of the CAS. how do i replace it ?

I hate to cough up on a new cam.

cheers

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vifer Contributor

vifer

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840857_B5_7_DDF_4_C47_A293_BB7_D565_D231 FCAE778_C_ACC7_4_D64_B7_CB_625_ECEF37256

Looking into the exhaust camshaft. You can see the broken bit.


1138_B1_BB_8_CDA_418_B_B0_DA_9_EF94_E80_ D8_F97962_03_D4_4_D78_95_B7_E56_FEF6_C7_E45_FF45_F_24_FE_4923_BA2_E_724357_CCD44


first pic is the birds eye view into the CAS. You can see the broken half moon bit inside.The broken spline shaft piece which came out of the CAS

5_B5803_B9_36_E4_4_C3_E_A88_E_461_AF39_DF6_FA092_E_9282_488_D_9_FF3_921_DFFC13_F DCA4375_A_76_F8_46_FA_B606_FA1_E7_B8_E08


..The biopsy. A lot of red dust from the seized bottom, bearing after finally turning it using the vise.

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vifer Contributor

vifer

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Looks like you've broken the spline off the cam. The CAS spline is supposed to be female with a half moon that matches up with the male spline and half moon on the cam

cheers. So that means a new camshaft?

ps: I've posted a Wanted ad in the Forsale section for anyone that has a R32 - RB20DE camshaft and CAS. pm me if anyone can help.

Or if anyone knows where i can pick it up in melbourne.

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vifer Contributor

vifer

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might be a good oportunity to swap out the motor for something better, if you cant do the labour yourself then you are up for a fair few $$$

I'll be doing the labor myself unfortunately. Otherwise yeah i would consider a swapout.

I have a pair of standard RB20DET cams, which are a slight upgrade over DE, and a CAS if you need.

as long as i dont have to pissfart around with the valve clearances and electronics, timings etc...

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White GTS-T Mentor

White GTS-T

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Because they both use Hydraulic lifters there is no adjustment for the valve clearances and because the spline/drive on the exhaust cam is the same the CAS are the same.

The DET cams run eight degrees more duration on the inlet and .5mm more lift on the inlet. The exhaust cam specs are the same as the DE.

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StevenCJR31 Veteran

StevenCJR31

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I'll be doing the labor myself unfortunately. Otherwise yeah i would consider a swapout.

as long as i dont have to pissfart around with the

valve clearances and electronics, timings etc...

you will have to pissfart around with camshaft timing and retension the timing belt-you are doing all this with the motor out?
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vifer Contributor

vifer

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you will have to pissfart around with camshaft timing and retension the timing belt-you are doing all this with the motor out?

I guess i was trying to say I need a drop in fit. Putting something non stock for the engine gets me concerned a little with having to mess with other stuff.

This is my friends car and she is on a limited budget. Trying to do it as good and inexpensive as possible.

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StevenCJR31 Veteran

StevenCJR31

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I guess i was trying to say I need a drop in fit. Putting something non stock for the engine gets me concerned a little with having to mess with other stuff.

This is my friends car and she is on a limited budget. Trying to do it as good and inexpensive as possible.

fair enough, i see where you are at, remember when it comes to cars (especially skylines) "good" and "inexpensive" are mutually exclusive terms
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vifer Contributor

vifer

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fair enough, i see where you are at, remember when it comes to cars (especially skylines) "good" and "inexpensive" are mutually exclusive terms

I hear ya. I own an Alfa Romeo and an old school Ducati. I know the story line all too well with the exotic.

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vifer Contributor

vifer

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You don't need the keyway in the cam I ran without for 3 years 400+hp no problem. They just need to be lined up in the right spot again

not sure I understand this. I believe im missing more than the keyway in the cam.

check my first two pics

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