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Author Topic: Once and for all on these rocker covers..  (Read 9439 times)

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ClarCE

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Once and for all on these rocker covers..
« on: 12 March 2007, 10:52:20 »
Right then,

I just want to get this confirmed, and perhaps if this is right (or even if it isn't in which case I will edit them) they could be added to the cam cover changing guide so this will be clear in the future - I think it would be beneficial as putting the right amount of sealant in the right place is so critical to this job..

Anyway, please confirm the following:

Front of Cam



Rear of Cam



Cheers in advance,

Chris.
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ians

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Re: Once and for all on these rocker covers..
« Reply #1 on: 12 March 2007, 12:13:15 »
Hi Chris,

I'm sorry to hear about your woes on this - I know what a pain it is to do once..

I'm not sure about your description of the goo locations at the front.  I applied the stuff in the angle where the seal goes from horizontal to curving upwards to go over the camshaft bearings (4 spots on each side).   You seem to be showing putting it at the outside corners of the cyclinder head - may not do any harm, although I'm not sure it does any good,  but I think you do need to get it in the angles above

At the rear I put it all around the curved half moon and a bit to each side - pretty much as you show.

I think the principle is to get the areas where the seal goes through a sharp angle vertically and is therefore most likely to leak.

I'm open to correction of course!

Chris - time allowing I'm happy to help with this.

Cheers,

Ian
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Marks DTM Calib

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Re: Once and for all on these rocker covers..
« Reply #2 on: 12 March 2007, 12:21:17 »
Next time I do some I will take a pic.....

I place a pea size blob of sealent at every tight bend (4 per gasket) so that when squashed by the gasket it covers both edges of the bend...if that makes sense!

So, your last picture of the rear half moon is a bit wrong as the sealent needs to seal 5mm of the inside radius and 5mm or so of the metal leading to it...

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Marks DTM Calib

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Re: Once and for all on these rocker covers..
« Reply #3 on: 12 March 2007, 12:22:17 »
In fact, I have some spare heads so will pop some sealent on them in the correct positions tonight and take a pic....
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ClarCE

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Re: Once and for all on these rocker covers..
« Reply #4 on: 12 March 2007, 12:23:06 »
Quote
Hi Chris,

I'm sorry to hear about your woes on this - I know what a pain it is to do once..

I'm not sure about your description of the goo locations at the front.  I applied the stuff in the angle where the seal goes from horizontal to curving upwards to go over the camshaft bearings (4 spots on each side).   You seem to be showing putting it at the outside corners of the cyclinder head - may not do any harm, although I'm not sure it does any good,  but I think you do need to get it in the angles above

At the rear I put it all around the curved half moon and a bit to each side - pretty much as you show.

I think the principle is to get the areas where the seal goes through a sharp angle vertically and is therefore most likely to leak.

I'm open to correction of course!

Chris - time allowing I'm happy to help with this.

Cheers,

Ian

Hi Ian,

Cheers for that - I've got a new cover turning up tomorrow with gaskets for the passenger side, drivers side (touch wood) appears to be holding..  So when I get back from SLady bitshorpe with my elite wheels I'll be having a third (and hopefully final) crack at it..

As for the locations, that gasket does some weird and wonderful stuff as it turns to go over the bearings, I didn't put it where it starts to go vertical, however I did use rather 2 rather large blobs each side where it does its right angles before going vertical - its possible that some of it would have pushed its way up there as I did put a fair bit on - rather than the stupidly small smear I used first time round!

Cheers,

Chris.
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ClarCE

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Re: Once and for all on these rocker covers..
« Reply #5 on: 12 March 2007, 12:24:12 »
Quote
In fact, I have some spare heads so will pop some sealent on them in the correct positions tonight and take a pic....

Mark you're a star, that would be most appreciated!
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Marks DTM Calib

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Re: Once and for all on these rocker covers..
« Reply #6 on: 12 March 2007, 12:31:48 »
I must add that I also put small dabs on the gaskets after they have been inserted into the covers in the same positions also....just to make sure!
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JamesV6CDX

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Re: Once and for all on these rocker covers..
« Reply #7 on: 12 March 2007, 12:47:16 »
I still reckon you got a cover warped...
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ians

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Re: Once and for all on these rocker covers..
« Reply #8 on: 12 March 2007, 13:04:39 »
Chris,
One thing - did you change the small o-rings around the bolt holes?  Mine were rock hard.

Cheers

Ian
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ClarCE

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Re: Once and for all on these rocker covers..
« Reply #9 on: 12 March 2007, 13:35:19 »
Quote
I still reckon you got a cover warped...

Me too James, new one should be here tomorrow with a bit of luck.. Seeing as some of the bolts on passenger side were seriously over tight, and some were half hanging out then it would be a miracle if it wasn't warped!

Ian - yep, changed the o-rings, twice now!

Cheers,

Chris.
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sounds2k

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Re: Once and for all on these rocker covers..
« Reply #10 on: 12 March 2007, 20:15:21 »
well here's a pic ... can't say where from though  ;)



cross-hatched areas are where the sealant goes ...
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Dave-C

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Re: Once and for all on these rocker covers..
« Reply #11 on: 12 March 2007, 20:27:07 »
Nobody has mentioned it yet, BUT, when I did my covers, I changed 16 '0' rings, I put a spot of black sealant on them, to hold them in place... has anyone else done this or is there another way of doing this?????

DC
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Do it right, do it once................

sounds2k

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Re: Once and for all on these rocker covers..
« Reply #12 on: 12 March 2007, 20:32:28 »
Quote
Nobody has mentioned it yet, BUT, when I did my covers, I changed 16 '0' rings, I put a spot of black sealant on them, to hold them in place... has anyone else done this or is there another way of doing this?????
well there's 4 sort of spikes in the round recess where they sit which hold the o-rings in place, they don't drop out when you turn the cover right side up if you push them into position - well not when I've done them anyway :)
« Last Edit: 12 March 2007, 20:33:09 by sounds2k »
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Dave-C

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Re: Once and for all on these rocker covers..
« Reply #13 on: 12 March 2007, 20:47:08 »
Mine were the correct part numbers, BUT, they seemd very slightly too small, hence the assistance from the Black Goo! When I had cause to take the covers off again they were all well in place, often wondered if they were actually the right size..

DC
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ians

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Re: Once and for all on these rocker covers..
« Reply #14 on: 12 March 2007, 21:17:53 »
I used a dab of grease to hold them in , then turned it upside down and gave it a good shake to make sure they wouldn't drop out anywhere embarrassing.
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