My '98 GU 4.2 TD
- hugejp
- Patrolman 1000+
- Posts: 2052
- Joined: 21 Oct 2014 21:01
- Full Name: JP Viviers
- Nickname: Oupoot
- Home Town: JHB
- Current 4x4: THE PATROL COLLECTION
2004 4.8 GRX TURBO "Tinkerbell"
2003 TD42T GRX "The Coal Roller" - Home Language: Half & Half
- Has thanked: 211 times
- Been thanked: 217 times
Re: My '98 GU 4.2 TD
Sad news indeed!
Good luck with the repair.
Good luck with the repair.
----------------------------------------------------------------------
You CAN with a NISSAN!
Jy KAN met 'n DATSUN!
You CAN with a NISSAN!
Jy KAN met 'n DATSUN!
- Rudolph
- Senior Member
- Posts: 388
- Joined: 15 Feb 2010 18:03
- Full Name: Rudolph van Deventer
- Nickname: Rudolph
- Home Town: Port Alfred
- Current 4x4: Nissan Patrol Y61 3.0Di GL (TD42Ti)
- Home Language: Afrikaans
- Has thanked: 107 times
- Been thanked: 32 times
Re: My '98 GU 4.2 TD
to hear this Dustin, at least it is going to SOJO, will be perfect after that.
Is there a lowbed strong enough to take it all the way to Jhb.....
Is there a lowbed strong enough to take it all the way to Jhb.....
- ces
- Senior Member
- Posts: 167
- Joined: 30 Dec 2015 14:11
- Full Name: Christoph Schulenburg
- Nickname: Christoph / Schulies
- Home Town: COLIGNY
- Current 4x4: Nissan Patrol 4.2D SGL Y61
Nissan Patrol 2.8l, 1985
VW Tiguan 2.0tdi, 2009 - Home Language: Afrikaans/German
- Has thanked: 19 times
- Been thanked: 38 times
Re: My '98 GU 4.2 TD
Ai, slegte nuus!!! Sterkte
"Sou die hand van die HERE te kort wees? Nou sal jy sien of my woord vir jou uitkom of nie." - Numeri 11,23
- Michael
- Moderator
- Posts: 2479
- Joined: 05 Mar 2014 14:39
- Full Name: Michael
- Nickname: Steyn
- Home Town: Centurion
- Current 4x4: Patrol GU 4.2 Turbo Diesel
- Home Language: Afrikaans
- Location: Centurion, PTA
- Has thanked: 189 times
- Been thanked: 336 times
Re: My '98 GU 4.2 TD
Ok so finally got the engine out and stripped.
The engine had a severe piston failure on no.3 and cracked the whole piston in half. It also had huge amounts of blowby which unfortunately caused damage on the sleeve as well.
So the future for this engine is a complete rebuild.
Block and cylinder head is going to the engineers this morning.
The engine had a severe piston failure on no.3 and cracked the whole piston in half. It also had huge amounts of blowby which unfortunately caused damage on the sleeve as well.
So the future for this engine is a complete rebuild.
Block and cylinder head is going to the engineers this morning.
"The Just shall live by Faith" Rom1:17
Check out my build here My Patrol
And my engine rebuild here mostly engine related stuff
Check out my build here My Patrol
And my engine rebuild here mostly engine related stuff
-
- Patrolman 1000+
- Posts: 1402
- Joined: 24 Feb 2014 15:33
- Full Name: Errol Wilken
- Nickname: Wilkie
- Home Town: Pretoria
- Current 4x4: 1999 4.5 GRX Nissan Patrol
2004 BMW 3.0D X5 - Home Language: Afrikaans
- Has thanked: 69 times
- Been thanked: 92 times
Re: My '98 GU 4.2 TD
Michael just for interest sake...what do you think has caused it !!!
I would like to see the spray pattern of the injector on that cylinder. I think that injector were washing down the cylinder when the engine wasn't running and started picking up ,also the raw diesel on initial start up was hitting the piston and started to crack
I would like to see the spray pattern of the injector on that cylinder. I think that injector were washing down the cylinder when the engine wasn't running and started picking up ,also the raw diesel on initial start up was hitting the piston and started to crack
- ricster
- Patrolman 1000+
- Posts: 5850
- Joined: 13 Jan 2010 11:16
- Full Name: Cedric Warner
- Nickname: Cedric
- Home Town: Alberton Gauteng
- Current 4x4: '99 Nissan Patrol 4.2 Turbo Diesel
- Home Language: English
- Location: LA..... No not Los Angles ..... Lower Alberton, Gauteng
- Has thanked: 591 times
- Been thanked: 468 times
Re: My '98 GU 4.2 TD
Wow .... That is one ugly failure !!!
The hole that it left in the piston looks very similar to the hole in the piston on mine when I had the failure on my motor many years back. I believe that it was due to a dripping injector, as I also had not high egt's or water temp, just a constant drip causing a hotspot and eventually the burn through. My piston however never cracked like that, and I still droove my Iron Maiden home from Botswana to Alberton ( 550Km ) with the hole in the piston. So I think Wilkie is onto something there...
Here is a pic of what mine looked like for comparison
The hole that it left in the piston looks very similar to the hole in the piston on mine when I had the failure on my motor many years back. I believe that it was due to a dripping injector, as I also had not high egt's or water temp, just a constant drip causing a hotspot and eventually the burn through. My piston however never cracked like that, and I still droove my Iron Maiden home from Botswana to Alberton ( 550Km ) with the hole in the piston. So I think Wilkie is onto something there...
Here is a pic of what mine looked like for comparison
Regards
Cedric
Nissan Patrol GL 4.2 Diesel Turbo (Iron Maiden)
Nissan SANI 3.0 V6 4x4 (SOLD)
Isuzu KB 280 DT 2x4 ('ol Smokey) - SOLD
Suzuki TL 1000R "V twin" (Growler) - SOLD
Cedric
Nissan Patrol GL 4.2 Diesel Turbo (Iron Maiden)
Nissan SANI 3.0 V6 4x4 (SOLD)
Isuzu KB 280 DT 2x4 ('ol Smokey) - SOLD
Suzuki TL 1000R "V twin" (Growler) - SOLD
- Michael
- Moderator
- Posts: 2479
- Joined: 05 Mar 2014 14:39
- Full Name: Michael
- Nickname: Steyn
- Home Town: Centurion
- Current 4x4: Patrol GU 4.2 Turbo Diesel
- Home Language: Afrikaans
- Location: Centurion, PTA
- Has thanked: 189 times
- Been thanked: 336 times
Re: My '98 GU 4.2 TD
Errol/Cedric, the injectors received new tips and were calibrated when Dustin did the turbo conversion so I dont think a faulty injector caused this. If this was a direct injection engine I would highly suspect the i jector, but not so much for the indirect injection. The injectors will however be tested to make sure
Also the "flame front" that comes out of the precombustion chamber is directly aimed at the "mushroom" on the piston head, so there is no way the combustion can create a hotspot on the area with the hole in.
If I have to bet money I would say at some point pre turbo conversion this piston had very high EGT's and was weak compared to the others. The turbo just pushed it over the limit.
Also the "flame front" that comes out of the precombustion chamber is directly aimed at the "mushroom" on the piston head, so there is no way the combustion can create a hotspot on the area with the hole in.
If I have to bet money I would say at some point pre turbo conversion this piston had very high EGT's and was weak compared to the others. The turbo just pushed it over the limit.
"The Just shall live by Faith" Rom1:17
Check out my build here My Patrol
And my engine rebuild here mostly engine related stuff
Check out my build here My Patrol
And my engine rebuild here mostly engine related stuff
- ces
- Senior Member
- Posts: 167
- Joined: 30 Dec 2015 14:11
- Full Name: Christoph Schulenburg
- Nickname: Christoph / Schulies
- Home Town: COLIGNY
- Current 4x4: Nissan Patrol 4.2D SGL Y61
Nissan Patrol 2.8l, 1985
VW Tiguan 2.0tdi, 2009 - Home Language: Afrikaans/German
- Has thanked: 19 times
- Been thanked: 38 times
Re: My '98 GU 4.2 TD
Ai eina tog daai lyk aaklig!
Michael, dink jy die blok en top is red-baar? Hoop so. Met nuwe binnegoed sal hy weer jare kan gaan!!! (Ek het 'n ou John Deere 8430 op die plaas wat in 2008 kompleet oorgedoen is. Probleem daai tyd was om 'n goeie blok te kry, myne was beyond use. Nadat ons daai hekkie oor is, kon die res redelik maklik gedoen word. Daai trekker loop nou nog, enjin klink so mooi soos 25 jaar gelede!)
Sterkte, behoort 'n interessante een te wees
Michael, dink jy die blok en top is red-baar? Hoop so. Met nuwe binnegoed sal hy weer jare kan gaan!!! (Ek het 'n ou John Deere 8430 op die plaas wat in 2008 kompleet oorgedoen is. Probleem daai tyd was om 'n goeie blok te kry, myne was beyond use. Nadat ons daai hekkie oor is, kon die res redelik maklik gedoen word. Daai trekker loop nou nog, enjin klink so mooi soos 25 jaar gelede!)
Sterkte, behoort 'n interessante een te wees
"Sou die hand van die HERE te kort wees? Nou sal jy sien of my woord vir jou uitkom of nie." - Numeri 11,23
- ricster
- Patrolman 1000+
- Posts: 5850
- Joined: 13 Jan 2010 11:16
- Full Name: Cedric Warner
- Nickname: Cedric
- Home Town: Alberton Gauteng
- Current 4x4: '99 Nissan Patrol 4.2 Turbo Diesel
- Home Language: English
- Location: LA..... No not Los Angles ..... Lower Alberton, Gauteng
- Has thanked: 591 times
- Been thanked: 468 times
Re: My '98 GU 4.2 TD
Luckily the TD42 blocks are pretty strong so popping out the old sleeves and putting new is not a problem at all. I think Michael now has more than sufficient experience in this department....hahaha.... They are also easy motors to work on, except for the weight , just parts are expensive unfortunately.
I think Michael will have that motor up and running very quickly. I assume the head is still looking good? If so its a matter of popping out the old precoms and putting new ones in and machining them flat, and then Bobs your Aunty....hahaha.
I also don't think that this was something that happened instantly, but was building up to the failure over a loooooong time. We will never know really what caused this, much like mine years back. I was under the impression that a dodgy injector injector was the cause of my motor packing up, but it is almost impossible to say for sure. Maybe like Michael said the damage was from years before from a dodgy injector and when Dustin replace the injectors it just gave the engine an extension of life without even knowing. Dustin, and the new owner, that is really crappy luck my friend. I feel your pain and frustration. But soon it will be running better than before !!
I think Michael will have that motor up and running very quickly. I assume the head is still looking good? If so its a matter of popping out the old precoms and putting new ones in and machining them flat, and then Bobs your Aunty....hahaha.
I also don't think that this was something that happened instantly, but was building up to the failure over a loooooong time. We will never know really what caused this, much like mine years back. I was under the impression that a dodgy injector injector was the cause of my motor packing up, but it is almost impossible to say for sure. Maybe like Michael said the damage was from years before from a dodgy injector and when Dustin replace the injectors it just gave the engine an extension of life without even knowing. Dustin, and the new owner, that is really crappy luck my friend. I feel your pain and frustration. But soon it will be running better than before !!
Regards
Cedric
Nissan Patrol GL 4.2 Diesel Turbo (Iron Maiden)
Nissan SANI 3.0 V6 4x4 (SOLD)
Isuzu KB 280 DT 2x4 ('ol Smokey) - SOLD
Suzuki TL 1000R "V twin" (Growler) - SOLD
Cedric
Nissan Patrol GL 4.2 Diesel Turbo (Iron Maiden)
Nissan SANI 3.0 V6 4x4 (SOLD)
Isuzu KB 280 DT 2x4 ('ol Smokey) - SOLD
Suzuki TL 1000R "V twin" (Growler) - SOLD
- Michael
- Moderator
- Posts: 2479
- Joined: 05 Mar 2014 14:39
- Full Name: Michael
- Nickname: Steyn
- Home Town: Centurion
- Current 4x4: Patrol GU 4.2 Turbo Diesel
- Home Language: Afrikaans
- Location: Centurion, PTA
- Has thanked: 189 times
- Been thanked: 336 times
Re: My '98 GU 4.2 TD
Christoph, I believe the head is still fine (except foe the precoms which can easily be changed) and as Cedric said the blocks are quite tough and its really straight forward to have them resleeved.
And yes its really not easy know exactly what the cause was except the weaker NA pistons not holding up.
Must say that I have opened some really sad turbo engines that ran very high EGT's and none of them ever cracks a piston. They seize up and distroy the block but have not found one cracked turbo piston to date.
And yes its really not easy know exactly what the cause was except the weaker NA pistons not holding up.
Must say that I have opened some really sad turbo engines that ran very high EGT's and none of them ever cracks a piston. They seize up and distroy the block but have not found one cracked turbo piston to date.
"The Just shall live by Faith" Rom1:17
Check out my build here My Patrol
And my engine rebuild here mostly engine related stuff
Check out my build here My Patrol
And my engine rebuild here mostly engine related stuff
Who is online
Users browsing this forum: No registered users and 48 guests