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+--- Thread: Cylinder head tools (/showthread.php?tid=5942)
Cylinder head tools - SpudMurphy - 25 Feb 2019
Hi chaps/chapesses
I've posted on FB about taking off my cylinder head and received many replies / recommendations about taking the engine out to do the job.
So no need to discuss that here .
Does anybody have / and would be willing to lend me the cylinder head tools namely the Sprocket tool J28858
And the liner tool J28852.
Can anybody help out here - I'll pay all postage to get them to/from me ?
Thanks.
RE: Cylinder head tools - Chris Williams - 26 Feb 2019
Don't have the liner tool, but you can easily make one with some bolts and some bar. I do have a Volvo sprocket tool Pt No: 9995213 (same thing) your welcome to borrow. So long as it returns!
Chris
RE: Cylinder head tools - SpudMurphy - 26 Feb 2019
(26 Feb 2019, 10:40)Chris Williams Wrote: Don't have the liner tool, but you can easily make one with some bolts and some bar. I do have a Volvo sprocket tool Pt No: 9995213 (same thing) your welcome to borrow. So long as it returns!
Chris
Brilliant ...... yes please Chris.
I will return it of course and will look into making a replica of it too.
I'll pm you my address.
Thanks
Kevin
RE: Cylinder head tools - Chris Williams - 27 Feb 2019
No prob, it'll be in the post. Out of interest (I may have missed it on Facebook) how have you/what makes you think you have a head issue? Did you get all the timing issues sorted?
Chris
RE: Cylinder head tools - SpudMurphy - 28 Feb 2019
(27 Feb 2019, 22:02)Chris Williams Wrote: No prob, it'll be in the post. Out of interest (I may have missed it on Facebook) how have you/what makes you think you have a head issue? Did you get all the timing issues sorted?
Chris
One of the spark plugs (new ones too) decided to shed some of it's ceramic jacket into #3.
I put an endoscope down there and there is also evidence of ceramic shards.
I tried various countermeasures such as vacuum, grease on the end of a stick - no joy!!!
There was also some water in #1. It was fresh water and the bore looked great - you could see the honing marks - there was no rust or corrosion in there.
To be honest that could have been water in the spark plug cavity and when it was removed the water went into #1.
At the end of the day - with these two issues , you have to ask yourself if you would take the head off, and I'm sure most people would.
Apart from the head - all the other nuts n bolts and fittings have already been removed - the back of the car is still off and it makes a lot of sense to do the head. Heck, somebody even gave me a gasket set for the side I'm working on.
Great gesture - a big thanks for that !!!
Oh and a very good friend of mine skims heads - so he will check it out for me.
I'll feel a lot more confident about it when it's done - and will learn how to do a DeLorean head - let's just hope those liners stay in place eh?
Finally, I'll remove the new water pump and take out the core plug underneath it in the vod. I can do that trick of putting a long bolt down that void and check that "TDC is actually TDC "on the engine plate that use when you fire a timing light - who knows - somebody may have moved that? With everything removed I can double check the distributor cap setting as it was out - but I believe that it's spot on now.
RE: Cylinder head tools - Chris Williams - 01 Mar 2019
Quote:One of the spark plugs (new ones too) decided to shed some of it's ceramic jacket into #3.Ahh Ok, I must have missed that bit. Good luck and keep us posted.
I put an endoscope down there and there is also evidence of ceramic shards.
I tried various countermeasures such as vacuum, grease on the end of a stick - no joy!!!
Chris
RE: Cylinder head tools - SpudMurphy - 12 Mar 2019
Here's the latest update - and it's not good.
After removing the head it became clear that engine had had some work done on it by a previous owner.
The cylinder bores looked amazing - honing marks were still in existence.
there was very little crud inside the block.
i took the head to my engineering buddy who rebores blocks, regrinds cams and skims heads.
The Delorean manual says that the cylinder head height should be between 4.373" - 4.379"
... mine is 4.353 which means it was skimmed 20 thou. Also there was a deflection (warp) between 0.002 and 0.004"
I would bet that the other head is in the same state.
So I think the best option is to get some good second hand ones as new ones are rare - still available but out of my range .. let's see if I can post photos and if anybody can help me out on this one I'd be eternally grateful.
This car deserves to be saved as it was one of a unique batch of 50. (nope - inserting pictures is a PITA (& I used to train IT lol)
[attachment=536]
RE: Cylinder head tools - Chris P - 13 Mar 2019
Spud,
Was it just the broken plug end that got you looking in there in the first place? Or did you suspect something else was wrong?
What I am thinking is that perhaps some heads could just have a bit of twist in them...that could well be overcome by tightening them down properly (in the right order) and with a good quality new head gasket .........it may work fine...perhaps?
If it were me, I'd give it a try ...what have you got to loose...a couple of days labour and a new head gasket?
RE: Cylinder head tools - SpudMurphy - 13 Mar 2019
(13 Mar 2019, 09:32)Chris P Wrote: Spud,
Was it just the broken plug end that got you looking in there in the first place? Or did you suspect something else was wrong?
What I am thinking is that perhaps some heads could just have a bit of twist in them...that could well be overcome by tightening them down properly (in the right order) and with a good quality new head gasket .........it may work fine...perhaps?
If it were me, I'd give it a try ...what have you got to loose...a couple of days labour and a new head gasket?
Hi Chris.
The main reason was that two lumps of spark plug ceramic had entered number 3 - there were also small shards in there. I could see the bits with an endoscope. Tried all ways to remove them - and I mean all ways!!
Then I put the 'scope down #1 and there was a small puddle of water (defo water - I tested it).
Now when I got this ex-Dubai car - the otterstat was bypassed and the fans were on permanently with the connections being bridged.
Also this car had hardly been used - neither in Dubai nor in the UK (not even UK registered)
You have to ask yourself "Why"?
So if I was a betting man, I would bet that this car had an overheating issue - and the heads have previously been skimmed by 20 thou.
..... also, I could not get it to start when I got it as the timing was so far out and backfired a lot - maybe that was the cause of 2 of my new Bosch Sparkplugs cracking?
So I decided to take the heads off - hey it was pretty painless to do as I have all new exhaust, water pump etc - so ancilliary removal was painless.
Stop Press.
Donald John Steger in the USA who has extensive cylinder head knowledge assures me that I can easily have 4 thou shaved off the head :-)
P.S. I still need a good ungrooved flat bonnet ;-)