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Kingb4
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Joined: 20 Jan 2018
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PostPosted: Mon Mar 11, 2019 1:18 pm    Post subject: Thoughts on cam-locking tool set Reply with quote

Would appreciate any advice.....

Am planning on dropping the gearbox, as I have a leak between the engine and gearbox, thats got progressively worse. its either the RMS or IMS seal leaking - will find out soon enough!
Whilst in there, was planning on checking the IMS bearing and removing the dust-cover. To check the bearing, I want to lock the crank and cams at TDC and loosen the chain tensioners. So was looking at this set.....
I have read threads where people have used 8mm drill bits and then bought the bolt-on locking tool separately - however cant see anywhere that sells the bolt-n bit on its own. I know Alex used to make them, but don't think he does anymore.

This looks the cheapest option to get the bolt-on tool?
https://www.ebay.co.uk/itm/362551491106

Also - are there any 'how-to' guides on actually checking the bearing for play?

Thanks in Advance!
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wasz
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PostPosted: Mon Mar 11, 2019 7:51 pm    Post subject: Reply with quote

You can just make one out of some flat plate, I used alloy check my thread linked below. They are different for 3 and 5 chain engines so make the right one!

Bearing you are looking for radial and axial play. Does it feel smooth? Too loose? Too tight? Is it clean in there--will be full of black oil but should be nothing else. Stop the bearing cage with something - will it still spin?

It's a feel thing.... I've dealt with lots of this type of bearing in other applications and you get a feel for them...
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Alex
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2000 Porsche 996 Carrera 4

PostPosted: Mon Mar 11, 2019 7:58 pm    Post subject: Reply with quote

Didn't think you needed to lock cams for doing this job. Just lock the crank and slacken bank 1 chain tensioner off.

I got all the info I needed to do mine off GrahamL's post on here:

http://911uk.com/viewtopic.php?t=95475&postdays=0&postorder=asc&start=87
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Alex
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2000 Porsche 996 Carrera 4

PostPosted: Mon Mar 11, 2019 8:03 pm    Post subject: Reply with quote

To check the bearing, as Wasz says, hold the cage in a static position and try and spin the centre spindle. If you can it's worn.
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77szymon
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2003 Porsche 996 Carrera 4S

PostPosted: Mon Mar 11, 2019 8:49 pm    Post subject: Reply with quote

I just done this job, instead of doing IMS leak I end up with engine out, my tool was made from 3mm aluminium bar I will take picture tomorrow for you, you can buy on ebay bar for £4.29 if you are handy with tools about 1h to do it.


Before you lock engine take gearbox out first and do these checks, you will need camera to do it:

1. oil cooler- look for any leak coolant/oil

2. fuel rails- spin engine and go under car quick and take a look for leaks mine was corroded and leak badly, I think you will feel the smell of fuel as I did

3. behind alternator you will find oil guide tube not sure if this is something common but mine was badly corroded or should I say part of it was missing

4. any oil on engine under AC compressor- this could be oil from power steering, if oil under alternator check oil filler tube,

IF
1 and 2 are bad you will need take engine out so there is no need for you to do RMS or IMS on car better do it wiht engine out

5. check alternator pulley

GOOD LUCK Thumb
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Kingb4
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PostPosted: Mon Mar 11, 2019 9:31 pm    Post subject: Reply with quote

Thanks - as always this forum comes up trumps!

Sounds like I dont need the tool at all (just an 8mm drill) - thanks for the link to the thread Alex!
Wasz - thanks for the bearing check advice - am comfortable following that.
Szymon - useful picture - shows what Wasz was suggesting. Also thanks for the advice about other bits to consider. I may end up taking the engine out, as I have some oil leaking around my AOS.
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wasz
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PostPosted: Tue Mar 12, 2019 9:09 am    Post subject: Reply with quote

alex yates wrote:
Didn't think you needed to lock cams for doing this job. Just lock the crank and slacken bank 1 chain tensioner off.

I got all the info I needed to do mine off GrahamL's post on here:

http://911uk.com/viewtopic.php?t=95475&postdays=0&postorder=asc&start=87


Depends if you take a brave pill first. There is a risk of movement.... Small and I understand lots of people don't bother. It would have been very awkward for me if it did move so I locked it up.
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Kingb4
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PostPosted: Tue Mar 12, 2019 10:54 am    Post subject: Reply with quote

wasz wrote:

Depends if you take a brave pill first. There is a risk of movement....


Hmm - for the sake of a £50 tool (or potentially free, if I make it myself) - I think I may err on the side of caution. (I am using up all my brave pills dropping the gearbox and potentially engine in the first place)
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Alex
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2000 Porsche 996 Carrera 4

PostPosted: Tue Mar 12, 2019 12:43 pm    Post subject: Reply with quote

Once you start locking cams, you've to then replace cam end caps as removing your old ones makes them not fit for use. So long as the chains are slack and the engine's locked I can't see anything going wrong, so long as you're not trying to extract the bearing or press a replacement in.
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wasz
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PostPosted: Wed Mar 13, 2019 10:32 am    Post subject: Reply with quote

Check DeMorts comments and the factory manual here http://911uk.com/viewtopic.php?t=124928&postdays=0&postorder=asc&start=20

A plug is only £6
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Kingb4
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PostPosted: Wed Mar 13, 2019 12:12 pm    Post subject: Reply with quote

Thanks - I have just ordered 2 caps (£10 incl postage!) - having read the thread, I should only need to remove two of the caps.

Realise it may not be entirely necessary, but would rather go belt and braces.
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Kingb4
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PostPosted: Wed Mar 13, 2019 8:47 pm    Post subject: Reply with quote

Was just surfing round the forum(http://www.911uk.com/viewtopic.php?t=102469) and found this tool that Harv had made. Being lazy, think it will be easier for me to make a tool with my mig that is similar to this (wont be exactly the same), rather than trying to cut 3 lots of 2mm plate to create an exact replica of the Porsche tool.

Harv wrote:



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Alex
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PostPosted: Wed Mar 13, 2019 8:54 pm    Post subject: Reply with quote

I've just ordered some guage plate yesterday so I can do a run of the 3.6 tools when I get chance but it may be a few weeks off.
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Kingb4
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PostPosted: Wed Mar 13, 2019 10:13 pm    Post subject: Reply with quote

Thats great Alex - that will save me knocking one up....I think there were quite a few people who were wanting one!
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Alex
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PostPosted: Wed Mar 13, 2019 10:24 pm    Post subject: Reply with quote

Yeah, I noticed that, hence me ordering some material.

Leave it with me. thumbsup
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Alex
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2000 Porsche 996 Carrera 4

PostPosted: Wed Mar 20, 2019 1:07 pm    Post subject: Reply with quote

Just doing a run of some now.
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Kingb4
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PostPosted: Wed Mar 20, 2019 2:26 pm    Post subject: Reply with quote

Thanks Alex thumbsup
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wasz
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Joined: 28 Dec 2012
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1999 Porsche 996 Carrera 2

PostPosted: Wed Mar 20, 2019 10:04 pm    Post subject: Reply with quote

Kingb4 wrote:
Was just surfing round the forum(http://www.911uk.com/viewtopic.php?t=102469) and found this tool that Harv had made. Being lazy, think it will be easier for me to make a tool with my mig that is similar to this (wont be exactly the same), rather than trying to cut 3 lots of 2mm plate to create an exact replica of the Porsche tool.

Harv wrote:




thats a cam hold down tool you use when removing the cam covers
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Kingb4
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PostPosted: Wed Mar 20, 2019 10:12 pm    Post subject: Reply with quote

wasz wrote:


thats a cam hold down tool you use when removing the cam covers


Ah - wasnt sure of its purpose......I wasnt going to copy it exactly. I was going to borrow the bracket bit of the design, as it looks easy to mig up, then weld in a couple of 6mm plates to lock the cams, rather than the threaded bolts....

But as Alex is making some more of the locking tool, will go with that.....as I have enough jobs to do without having to make the tools to do the jobs.

Wasz, am planning on doing the brake pipe over the engine. I know you did yours recently. Did you go with the OPC provided pipe? I think lots of mine under the car (front to back) also need attention. So am debating going the Kunifer route - realise that will upset purists, but should mean they never need doing again (ok, well maybe not never, but certainly for a decent while)......
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wasz
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1999 Porsche 996 Carrera 2

PostPosted: Thu Mar 21, 2019 10:39 am    Post subject: Reply with quote

Kingb4 wrote:
Wasz, am planning on doing the brake pipe over the engine. I know you did yours recently. Did you go with the OPC provided pipe? I think lots of mine under the car (front to back) also need attention. So am debating going the Kunifer route - realise that will upset purists, but should mean they never need doing again (ok, well maybe not never, but certainly for a decent while)......


That brake pipe is fitted first at the factory. To fit the steel pipe you'd have to drop loads of pipes and brackets to get it in (see mistercorn's thread, he did this), or unbend/rebend it a few times risking work hardening the pipe and damaging the coating.

Kunifer can be threaded in and bent as you go.

I did the lot in kunifer, I can't think of any valid reason to complicate the job by using steel.

If you don't like the look of kunifer then thread it through some black heatshrink tubing before fitting, then shrink to fit once done - this will look factory.

All the other brake pipes are easy to do, apart from the one that runs in front of the steering rack.
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