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

Reply
 
Thread Tools Display Modes
Old 27th November 2019, 17:43   #1
Abott10
*
 
Join Date: Apr 2014
Posts: 227
Thanks: 1,275
Thanked 1,917 Times in 1,328 Posts
Cool

I'm looking to fit these four little gizmos

Attached Images
File Type: jpg RESIZE #2 SHIM Project IMG_0212.jpg (40.2 KB, 273 views)

Last edited by Abott10; 14th December 2019 at 20:29..
Abott10 is offline   Reply With Quote
Old 27th November 2019, 18:19   #2
Lovel
I really should get out more.......
 
P6B, L550, Imp, F56, Commando

Join Date: Nov 2006
Location: Aberdeenshire
Posts: 2,886
Thanks: 352
Thanked 677 Times in 440 Posts
Default

.004” or .003” ?
Lovel is offline   Reply With Quote
Old 27th November 2019, 18:50   #3
COLVERT
This is my second home
 
R75 Saloon.

Join Date: Feb 2009
Location: France/or Devon.
Posts: 14,003
Thanks: 3,851
Thanked 2,167 Times in 1,816 Posts
Default

Lots more BIG pictures.---


Any chance you could make them screen size and not HUGE ??----
COLVERT is offline   Reply With Quote
Old 27th November 2019, 19:04   #4
marinabrian
 
marinabrian's Avatar
 
MG ZT

Join Date: Jan 2011
Location: Newcastle Upon Tyne
Posts: 20,151
Thanks: 3,565
Thanked 10,837 Times in 5,718 Posts
Default

Better off sourcing a decent block John, the 1400 ones are generally better, then drilling and tapping the oil drain for the turbo.

Once annealed, the blocks are basically scrap, and shimming the liners is a temporary bodge

Brian
marinabrian is offline   Reply With Quote
Old 28th November 2019, 13:51   #5
Abott10
*
 
Join Date: Apr 2014
Posts: 227
Thanks: 1,275
Thanked 1,917 Times in 1,328 Posts
Default Rain stopped play ... AGAIN.



Made a start by jacking up the car.





When I fitted a new Cylinder Head Gasket to this car four years ago, I also fitted better quality Exhaust Manifold Studs, Nuts and washers. The Studs have an Allen Key facility which makes working on these areas so much more convenient and easier.

Attached Images
File Type: jpg IMG_0220.jpg (40.9 KB, 317 views)
File Type: jpg IMG_0221.jpg (42.1 KB, 315 views)
File Type: jpg IMG_0222.jpg (40.4 KB, 313 views)
File Type: jpg IMG_0224.jpg (48.0 KB, 315 views)
File Type: jpg IMG_0226.jpg (38.8 KB, 322 views)
File Type: jpg IMG_0225.jpg (39.7 KB, 312 views)
File Type: jpg IMG_0227.JPG (107.6 KB, 313 views)
Abott10 is offline   Reply With Quote
Old 2nd December 2019, 19:20   #6
Abott10
*
 
Join Date: Apr 2014
Posts: 227
Thanks: 1,275
Thanked 1,917 Times in 1,328 Posts
Default

Quickly had the Coil Packs and Camshaft Cover removed



Even the Gasket was in good shape. When the engine over heated I half expected it to have destroyed the paint surfaces as sometimes happens even in a healthy engine.


Small traces of Water-Oil Mix. Condensation or?...


Also removed the two Retaining Bolts and Nuts to release the Alternator. I actually swung it forward to facilitate Cylinder Head and Exhaust Manifold access and removal.

Having done that, turned my attention to the 5 Exhaust Manifold Nuts, Washers and Studs. Four years ago I treated this engine to a set of Stainless Steel, Allen Key Drive Ex-Manifold Studs, Brass Nuts and Washers and using these Allen Key Tools they were soon removed.

Here's the tools for the job. Both useful because of various positions needed and other access restrictions.


Tools in action






End Product ~ One detached Exhaust Manifold. I carefully recovered the Exhaust Manifold Stainless Steel Gasket. It looks like new. So will reuse.
Attached Images
File Type: jpg Cylinder Liner SHIM Task Day 2 (23).jpg (72.5 KB, 270 views)
File Type: jpg Cylinder Liner SHIM Task Day 2 (15).jpg (42.1 KB, 274 views)
File Type: jpg Cylinder Liner SHIM Task Day 2 (24).JPG (130.4 KB, 274 views)
File Type: jpg Cylinder Liner SHIM Task Day 2 (25).jpg (36.9 KB, 268 views)
File Type: jpg Cylinder Liner SHIM Task Day 2 (9).JPG (116.5 KB, 275 views)
File Type: jpg IMG_0264.JPG (112.5 KB, 263 views)
Abott10 is offline   Reply With Quote
Old 3rd December 2019, 10:14   #7
pletevl
Posted a thing or two
 
rover 75 cdti(rhd), MG ZR(lhd), MG TF(lhd), MG TF(rhd), mini mpi (lhd), Renault megane III (awful)

Join Date: Mar 2014
Location: East of France
Posts: 1,272
Thanks: 124
Thanked 114 Times in 93 Posts
Default

Do the liners drop because of heat or because of the hammering effect ?

I was told that the head suffers after overheating which causes the liners to hammer up and down and that the block itself doesn't really suffer from the heat.

Pete.
pletevl is offline   Reply With Quote
Old 3rd December 2019, 12:37   #8
Abott10
*
 
Join Date: Apr 2014
Posts: 227
Thanks: 1,275
Thanked 1,917 Times in 1,328 Posts
Default

Quote:
Originally Posted by pletevl View Post
Do the liners drop because of heat or because of the hammering effect ?

I was told that the head suffers after overheating which causes the liners to hammer up and down and that the block itself doesn't really suffer from the heat.

Pete.
Good question Pete. I with limited knowledge understand that when a K-Series severely overheats, the integrity of the Cylinder Block and Head material is compromised and sometimes badly weakened. Cue loosening of liner locations and Fire Ring indents in Cylinder Head particularly the area close to Exhaust Valves.

I suspect one or both can play a part here depending on severity of excess heat. Only needs a slight weakening and enlargement of the Liner Location and that enables one or both the above scenarios.

The basically very similar MG6 1.8T engine ( Chinese version of Rover's K-Series ) I have been informed by someone when they worked for the Chinese operation at Longbridge, that the Chinese use a FORCED not GRAVITY fed casting process for those major engine components, the Cylinder Block and Cylinder Head. This must result in a stronger structure. When fitting the MG6 engine to one of my MG ZT-T 1.8Ts, there were a range of improvements clear to be seen. At the time the real improvement was unseen. That of the superior casting process.

There is a possibility of all my work being a waste of time. I will do it to the best of my caring ability with the benefit of not having a profit or time gun held to my head as is all too often the case in the pro-environment repair shop. By being thorough and taking my time ( no pressure to have car ready for journey to work tomorrow ) a competent repair should be the end result.

If after all that, it does not work out, no real harm done. It's mainly a learning experience for me which I enjoy.

By the way there is more than one example of MG6s with high mileages ( 200,000 mile plus ) one a Taxi, never needing much engine work at all, just regular servicing. Few Rover K-Series 1.8s can claim that. My 1.8 ZS bought new in 2003 now with 100,000 miles on it still no CHG issues... fingers crossed. I did catch a totally worn out Water Pump which if not spotted, would lead to cylinder head gasket DAMAGE on my MG ZS, which far too many confuse with failure both within the trade ( often conveniently for them ) and car consumer circles.

Sunny now so out with the tools soon. More progress today. Some updates later today may follow if of interest.
Abott10 is offline   Reply With Quote
Old 3rd December 2019, 13:47   #9
RoverP480
Gets stuck in
 
None at the moment

Join Date: Jan 2018
Location: Hereford
Posts: 501
Thanks: 1
Thanked 165 Times in 146 Posts
Default

I thought the Longbridge casting were vacuum cast not gravity !
RoverP480 is offline   Reply With Quote
Old 3rd December 2019, 17:24   #10
Abott10
*
 
Join Date: Apr 2014
Posts: 227
Thanks: 1,275
Thanked 1,917 Times in 1,328 Posts
Default

Quote:
Originally Posted by RoverP480 View Post

I thought the Longbridge casting were vacuum cast not gravity !
I do not know how the Longbridge/Powertrain engine components were cast.
Abott10 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 11:41.


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