Go Back   The 75 and ZT Owners Club Forums > The 75 and ZT Owners Club Forums > The 75 and ZT Owners Club General Forum
Register FAQ Image Gallery Members List Calendar Mark Forums Read
Notices

Reply
 
Thread Tools Display Modes
Old 30th April 2017, 16:27   #1
Saga Lout
This is my second home
 
MG ZT and Rover 75,

Join Date: Jul 2013
Location: Wigan
Posts: 3,276
Thanks: 2,556
Thanked 2,685 Times in 1,037 Posts
Default At Last

I just took the 75 for some fuel, it has a few small issues I need to tick off but I like the way it feels with the new clutch and engine rebuild. It's smooth but I detected some roughness in the drivetrain, I suspect the front wheel bearings are worn. The engine has almost new everything and it shows with the way it pulls through the gears. The new modified return nozzle is no longer connected to the inlet manifold, and that's taken away any future possibility of water getting past the gasket. I'll go through it again tomorrow and double check things now it's had a run out.
It's been hard after the eye surgery but it's job done. To recap it's had a new LUK Clutch and slave, it's had new cylinder liners and pistons, new oil pump and crank seal, the head has been totally serviced and new camshaft oil seals/cambelt. Every single part that was taken off has been cleaned thoroughly and of course, new oil and filter. It's effectively a new engine again.

Last edited by Saga Lout; 30th April 2017 at 17:02..
Saga Lout is offline   Reply With Quote
Old 30th April 2017, 17:32   #2
WillyHeckaslike
This is my second home
 
WillyHeckaslike's Avatar
 
Rovers 75 & 25

Join Date: Oct 2010
Location: Wearside
Posts: 4,496
Thanks: 543
Thanked 709 Times in 511 Posts
Question

Quote:
Originally Posted by Saga Lout View Post
The new modified return nozzle is no longer connected to the inlet manifold, and that's taken away any future possibility of water getting past the gasket.
Interesting, Mike. So what have you done, are you referring to the air-bleed circuit for the head?
WillyHeckaslike is offline   Reply With Quote
Old 30th April 2017, 17:33   #3
Rooney
Suspended
 
Rooney's Avatar
 
MG ZT 135+ Rover 75 CDTi Tourer, 75 2.5 V6 Saloon

Join Date: Oct 2014
Location: County Antrim
Posts: 2,027
Thanks: 835
Thanked 882 Times in 557 Posts
Default

This car is going to be worth some money when you sell it Mike.

When will that be?
Rooney is offline   Reply With Quote
Old 30th April 2017, 17:58   #4
Saga Lout
This is my second home
 
MG ZT and Rover 75,

Join Date: Jul 2013
Location: Wigan
Posts: 3,276
Thanks: 2,556
Thanked 2,685 Times in 1,037 Posts
Default This.

Quote:
Originally Posted by WillyHeckaslike View Post
Interesting, Mike. So what have you done, are you referring to the air-bleed circuit for the head?
This is what I've done...It works well.
Attached Images
File Type: jpg DSCF6288.jpg (120.7 KB, 62 views)
File Type: jpg DSCF6290.jpg (133.7 KB, 60 views)
File Type: jpg DSCF6292.jpg (129.5 KB, 60 views)
File Type: jpg DSCF6293.jpg (118.6 KB, 61 views)
Saga Lout is offline   Reply With Quote
Old 30th April 2017, 19:39   #5
WillyHeckaslike
This is my second home
 
WillyHeckaslike's Avatar
 
Rovers 75 & 25

Join Date: Oct 2010
Location: Wearside
Posts: 4,496
Thanks: 543
Thanked 709 Times in 511 Posts
Thumbs up

I see. So have you removed the bearing valve to do that? The cul-de-sac on the other end of the head tends to be the main problem area, given the long history of trouble with coolant leaking into N.4 cylinder via it I'm surprised that someone hasn't yet made a core plug for it.
WillyHeckaslike is offline   Reply With Quote
Old 30th April 2017, 19:53   #6
Saga Lout
This is my second home
 
MG ZT and Rover 75,

Join Date: Jul 2013
Location: Wigan
Posts: 3,276
Thanks: 2,556
Thanked 2,685 Times in 1,037 Posts
Default Yes.

Quote:
Originally Posted by WillyHeckaslike View Post
I see. So have you removed the bearing valve to do that? The cul-de-sac on the other end of the head tends to be the main problem area, given the long history of trouble with coolant leaking into N.4 cylinder via it I'm surprised that someone hasn't yet made a core plug for it.
It's already been done on this head, I'll take off the manifold and take a picture of the plug, 5/8 UNF tap and a plug after rounding up the hole with a round file. It's the nearest size I could get, I used a new temp' sender and cut it up as I have dozens of them to use as a tester. The nozzle was from an old fuel pump, and soldered into the remains of the temp' sender before I screwed it into the head.
Saga Lout is offline   Reply With Quote
Old 1st May 2017, 12:56   #7
Saga Lout
This is my second home
 
MG ZT and Rover 75,

Join Date: Jul 2013
Location: Wigan
Posts: 3,276
Thanks: 2,556
Thanked 2,685 Times in 1,037 Posts
Default Here's the plug.

Quote:
Originally Posted by Saga Lout View Post
It's already been done on this head, I'll take off the manifold and take a picture of the plug, 5/8 UNF tap and a plug after rounding up the hole with a round file. It's the nearest size I could get, I used a new temp' sender and cut it up as I have dozens of them to use as a tester. The nozzle was from an old fuel pump, and soldered into the remains of the temp' sender before I screwed it into the head.
I have a small water leak from the thermostat O ring in the block, so I've whipped off the inlet manifold today to get at it easier. As you can see in the picture there's a threaded plug in the hole, it's secured with Araldite on the threads. I've also made the nozzle on the other side a bit longer to make it easier to get the clip on the hose. I think it's two worthwhile mods to a known problem, it also rules out the gasket as a cause of coolant loss should it happen.
Attached Images
File Type: jpg DSCF6297.jpg (122.8 KB, 38 views)
File Type: jpg DSCF6298.jpg (127.7 KB, 43 views)
File Type: jpg DSCF6299.jpg (135.1 KB, 41 views)
Saga Lout is offline   Reply With Quote
Old 1st May 2017, 21:40   #8
WillyHeckaslike
This is my second home
 
WillyHeckaslike's Avatar
 
Rovers 75 & 25

Join Date: Oct 2010
Location: Wearside
Posts: 4,496
Thanks: 543
Thanked 709 Times in 511 Posts
Thumbs up

Good effort Mike, nice to see someone tackle some long-standing issues with these engines. Some people do dispense with the jiggle valve in the head and leave it at that but I'm with Des Hammill in thinking that a flow restrictor is best fitted somewhere in the circuit to compensate.
WillyHeckaslike is offline   Reply With Quote
Old 1st May 2017, 21:53   #9
minimutly
Posted a thing or two
 
mg zt

Join Date: Mar 2014
Location: cardigan
Posts: 1,087
Thanks: 28
Thanked 187 Times in 158 Posts
Default

Lord save us from some of the repetitive, innacurate drivel that des hammil wrote in that book - worth reading though, if only to provoke some debate...
minimutly is offline   Reply With Quote
Old 1st May 2017, 22:28   #10
WillyHeckaslike
This is my second home
 
WillyHeckaslike's Avatar
 
Rovers 75 & 25

Join Date: Oct 2010
Location: Wearside
Posts: 4,496
Thanks: 543
Thanked 709 Times in 511 Posts
Default

Thought I was on the tech forum again for a minute there.
WillyHeckaslike is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 12:21.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright © 2006-2023, The Rover 75 & MG ZT Owners Club Ltd