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jx top end rebuild

Posted: 21 Jan 2013, 17:23
by axeman
as some of you know the head gaskit went on sally van a while ago and i have finally got around to doing something about it (about time in her view). but as with most things on these vans one job leads to another and another as you never know what some one else has done until you start to pull things apart. i knew that the exhaust was on it's last legs, but i was not expecting the studs on the turbo to as non existent as they were. a common problem as i now know.
when the head gaskit blew the heat must have been horrific as i warped not only the bottom of the head but there was also distorshion on the top of the head putting stress on the cam shaft, :( so a phone around and a amc head in very good condition was sourced from andy,
the turbo, inlet manifold, exhaust manifold were all sent to ian for a tickle, and came back faced so now they are all smooth and flat.
the old and new head went to a local diesle specialist to remove the injectors spray test them and then reinstate them in to the new head , i got a phone call from them about an hour after i dropped of the head when they told me that 2 or the injectors were td ones and the other 2 were n/a ones, they sourced the correct ones and fitted them in t the new head.
so i finished work early to day and had a fiddle around in the garage reassembling things until the weather improves and i can go re fit it all this is where i am at the moment.
i am sure that were will be some more questions as i go but this is the first one
i cut a section of m10 sud to hold spring in the blow off valve then tighened the grub screw is this what understood was the right thing to do?
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the union for the turbo oil feed (in the pic) dose this seal on just the threads alone?
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i did not make a note of the route of the flexable hoses that link the injectors dose this matter or not the routing of them ?
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thanks neil

Re: jx top end rebuild

Posted: 21 Jan 2013, 18:40
by jed the spread
Considering what you/Sally paid for the van and considering what you/Sally have spent on it so far and its condition now and the amount of money that needs spending on it to get it looking right, then the amount of money you/Sally need to spend on the mechanical parts and the amount of money you/Sally will have to spend on it to get it up to full working Westfalia spec, then the nice bits on top if Sally can free up a couple of grand etc.... Are you going to get yourself in a massive financial hole?


Considering where you live and the amount of people in your/Sallys area that know Syncros and Westfalias (I know hindsight is an amazing thing) If you would have asked for help one of us could have viewed the van properly and you/Sally could have assessed if it was worth it. I have changed a head on a TD successfully as an amateur and although its not hard work you do need to be very methodical, there are of course loads of things that you will find afterwards you should have done while doing the head work that I would be happy to pass on and help. I would like to think I know the Westfalia conversion reasonably well and how it all fits together and like I said I would be happy to help but the van does have a sealing value And I would hate to see it sat rotting away some place.

Good luck with it though :ok

Jed

Re: jx top end rebuild

Posted: 21 Jan 2013, 18:46
by ..lee..
If it got that hot may be with checking rings and bearings while the head is off.

Re: jx top end rebuild

Posted: 21 Jan 2013, 18:54
by jed the spread
Yeh thats quite hot. Did you have a water pump failure or a split hose that emptied all the coolant or something? I know that TD's unlike the TDI's are really sensitive to heat, but you know about the importance of gauges and would have stopped anyway. It must be more than a head gasket failure though :?

Jed

Re: jx top end rebuild

Posted: 21 Jan 2013, 18:54
by lloydy
They are a pain in the a***, especially an old one with unknown history. Cheaper option might have been that 1Z (which you already have) fitted with xriss's mech pump.
Good luck though, and that turbo union on mine had a copper washer

Re: jx top end rebuild

Posted: 21 Jan 2013, 19:07
by jed the spread
There are only two MTDI pumps worth fitting when talking with a mate who knows about this stuff, hence the ones that come up for sale after they have these pumps fitted :wink: .


Jed

Re: jx top end rebuild

Posted: 21 Jan 2013, 19:14
by lloydy
Must still work better than a JX though?

I just think he doesn't need that dirty stinking diesel crap westfalia conversion. He needs to sell it at a massive loss to someone who lives in the same area

Re: jx top end rebuild

Posted: 21 Jan 2013, 19:31
by jed the spread
lloydy wrote:Must still work better than a JX though?

It wont give you 40mpg but then again if you work out the total spend against the nights spent in it, against two weeks in Mauritius all inclusive for a family of 3 you would have ten years of pretty cushy luxury holidays and if you would give up that to look the part at the odd SN meet then I dont think MPG is a factor :lol: .

Jed

Re: jx top end rebuild

Posted: 21 Jan 2013, 19:43
by xriss
there are a few M pumps thats are fine the cummins 4b pump i have run for a few years previous to the pump im running now needs a tweek and will be done by westy venturs,the lt pump is fine if tweeked ...there are other franken pumps like the kia/aaz etc that also work...if you know your stuff you can get the LT pump working fine with little effort :D

Re: jx top end rebuild

Posted: 21 Jan 2013, 19:56
by jed the spread
Karl knows his stuff thats for sure :wink:

Jed

Re: jx top end rebuild

Posted: 21 Jan 2013, 20:04
by axeman
sally was driving down to bounemouth with maddie to watch the sailing and spend a few days away in the summer and the one of the main water pipes blew off, she stopped asap on the hard shoulder of the m3, once recovered an at home i removed the main front to back pipes and the steel inserts were fooked, replaced them with new set from simon, and she maintained temp but there was alway a slight bubbling in the expansion tank so i knew that i was on borrowed time, then on a return trip to brighton the temp began to rise, i pulled over asap and let it cool down and called the aa, they came and she started up straight away but there were exhaust gassed coming from the header tank, so no need for a sniff test.

i thought long and hard about the 1z but in my head to was too much of the unknown for me, and with the long term plan to move over the petrol engine i could not warent the work.

as for mpg? well sally just fills it up when it's empty (dont we all)?

neil

Re: jx top end rebuild

Posted: 21 Jan 2013, 20:06
by xriss
then again perhaps electronic is the way to go and have an M pump as back up if you ever find your self stuck in the foot hills of the Himalayas :D

Re: jx top end rebuild

Posted: 21 Jan 2013, 20:13
by syncropatrick
axeman wrote:...with the long term plan to move over the petrol engine...
I like your style Sir!
:ok

Re: jx top end rebuild

Posted: 21 Jan 2013, 20:13
by jed the spread
xriss wrote:then again perhaps electronic is the way to go and have an M pump as back up if you ever find your self stuck in the foot hills of the Himalayas :D

Yep, maybe because you would find it a hell of a lot more difficult to find someone to fix your custom pump..



Jed

Re: jx top end rebuild

Posted: 22 Jan 2013, 12:24
by xriss
then again almost all failures on are due to camplate/roller ...generally they wear out around the 300000 mile mark .... invariably if one goes the other will too ...so spare camplate n rollers in pocket and off you go :D
so i guess add back in the electronic factor & the tide turns in favour of the Mpump as far as the reliability stakes are concerned...my pumps not custom its an off the shelf number by bob him very self ...and will happily
scream to a smoke free 4200 if desired :lol: