"Jasper" - Y61 4.2D

Showcase your baby
User avatar
ricster
Patrolman 1000+
Patrolman 1000+
Posts: 5954
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: 255 times
Been thanked: 255 times

Re: "Jasper" - Y61 4.2D

Post by ricster » 27 Nov 2017 12:21

Mine at 120 km/h aircon on, flatish road, I probably average between 420 and 500 deg C. The 500 deg is with a headwind, 420 deg with a tail wind, irrespective of whether loaded or not, but with roof top tent on, I'll push closer to an average of 480 - 550 deg. Switch the aircon off and that drops about 20 deg off.

But again, depends on where your temp probe is fitted...
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

User avatar
Michael
Moderator
Posts: 2628
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: 163 times
Been thanked: 275 times

Re: "Jasper" - Y61 4.2D

Post by Michael » 27 Nov 2017 15:42

Both Ian and Christoph's probes are pre turbo as yours Cedric.
Ian, your EGT's are running on the low side because your pump is deliverling a bit less fuel than it should which in return gives you a lean mixture and thus the low EGT's.
"The Just shall live by Faith" Rom1:17

Check out my build here My Patrol
And my engine rebuild here mostly engine related stuff

User avatar
Michael
Moderator
Posts: 2628
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: 163 times
Been thanked: 275 times

Re: "Jasper" - Y61 4.2D

Post by Michael » 27 Nov 2017 15:47

Now on EGT's I like to have the engines like Christoph's around the 550 pre turbo with short bursts of up to 600, but I would like to have them closer to 550 for safety.

On the engines with the turbo pistons you can push EGT's to 650.

I have just fitted a Madman on a NA TD42 and the client is actually struggeling uphills to keep EGT's under 550, so just another example of the non turbo engines that can very easily reach very high temps
"The Just shall live by Faith" Rom1:17

Check out my build here My Patrol
And my engine rebuild here mostly engine related stuff

User avatar
ces
Senior Member
Senior Member
Posts: 131
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: 13 times
Been thanked: 22 times

Re: "Jasper" - Y61 4.2D

Post by ces » 29 Nov 2017 08:55

Now this is getting interesting...

Did a short run to town and back with a heavy cattle trailer. Loaded (700kg trailer+700kg load) the following readings:

4th, 2000revs-2200revs, approx 85-100km/h - EGT 550-600
3rd, 3000-3200revs, approx 65-80km/h - EGT generally below 450

So, according to me that proves what Tinus said about the higher revs and more air. Feels counter-intuitive, but the readings don't lie.

Another thing, this is the same trailer on the same road that I burst a water pipe with in February. Was a bit scary :confused:
But, no worries, the water temp touched 100 C only once. Radiator fixed properly!

C
IMG_20171127_161822.jpg
"Sou die hand van die HERE te kort wees? Nou sal jy sien of my woord vir jou uitkom of nie." - Numeri 11,23

User avatar
ces
Senior Member
Senior Member
Posts: 131
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: 13 times
Been thanked: 22 times

Re: "Jasper" - Y61 4.2D

Post by ces » 29 Nov 2017 08:57

TijmenvdS wrote:
27 Nov 2017 12:17
ces wrote:
27 Nov 2017 09:55
EGT:
Max 578
Min while cruising 450ish
I passed 550 on 6 occasions, 3x while accelerating after a turn-off, 3x going up an incline.
Average about 520

c
Before the intercooler that is where mine ran aswell.
SO I reckon in about 10,000km I might just fit a small one on top. Just to cool things down a bit :biggrin:
"Sou die hand van die HERE te kort wees? Nou sal jy sien of my woord vir jou uitkom of nie." - Numeri 11,23

User avatar
hugejp
Patrolman 1000+
Patrolman 1000+
Posts: 1563
Joined: 21 Oct 2014 21:01
Full Name: JP Viviers
Nickname: Oupoot
Home Town: JHB
Current 4x4: PATROL COLLECTION
2004 4.8 GRX TURBO "Tinkerbell"
2003 4.2 tdi GRX "The Coal Roller"
Home Language: Half & Half
Has thanked: 108 times
Been thanked: 89 times

Re: "Jasper" - Y61 4.2D

Post by hugejp » 29 Nov 2017 09:02

I had the same on an old g-wagon 5cyl 2.9D

Up hills especially, if you kept the revs up ie. spun the viscous at a higher rpm & kept the engine out of the "labour" zone... It ran way cooler
----------------------------------------------------------------------

You CAN with a NISSAN!

Jy KAN met 'n DATSUN!

User avatar
ricster
Patrolman 1000+
Patrolman 1000+
Posts: 5954
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: 255 times
Been thanked: 255 times

Re: "Jasper" - Y61 4.2D

Post by ricster » 29 Nov 2017 09:07

Remember diesels run different to petrol... on a diesel you want less fuel and more air to achieve the best combustion ( obviously it's as a balance between the two ). So the more diesel in the chamber the hotter it will burn, causing higher EGT's. Adding more air to the same amount of diesel in the chamber will cause for a cooler burn but still very powerful as all the diesel is burnt efficiently. So basically a diesel you want too run lean.

A petrol motor will burn up if you run it lean, so therefore you pump a bit more fuel in to get it to run cooler, so you will run rather a rich mix than a lean mix
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

User avatar
Michael
Moderator
Posts: 2628
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: 163 times
Been thanked: 275 times

Re: "Jasper" - Y61 4.2D

Post by Michael » 29 Nov 2017 17:16

Christoph, ek het vir jou n mooi top mount cooler soos die TD42T bakkies vir n bargain...... sal gesels oor hom as ons weer praat.

Then if we can just get your diesel pump to spec and do the cooler you will not bwlieve the difference in power and temps
"The Just shall live by Faith" Rom1:17

Check out my build here My Patrol
And my engine rebuild here mostly engine related stuff

User avatar
ces
Senior Member
Senior Member
Posts: 131
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: 13 times
Been thanked: 22 times

Re: "Jasper" - Y61 4.2D

Post by ces » 30 Nov 2017 22:25

Michael wrote:
29 Nov 2017 17:16
Christoph, ek het vir jou n mooi top mount cooler soos die TD42T bakkies vir n bargain...... sal gesels oor hom as ons weer praat.

Then if we can just get your diesel pump to spec and do the cooler you will not bwlieve the difference in power and temps
Ons sal weer praat Michael, thanks.
"Sou die hand van die HERE te kort wees? Nou sal jy sien of my woord vir jou uitkom of nie." - Numeri 11,23

User avatar
ces
Senior Member
Senior Member
Posts: 131
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: 13 times
Been thanked: 22 times

Re: "Jasper" - Y61 4.2D

Post by ces » 13 Mar 2018 15:13

Chaps,

I've taken my car back to Michael at SOJO to have that top-mounted bakkie intercooler fitted. Also to be done:
- panelbeating on bonnet to properly fit scoop, and fixing some other spots
- Diesel pump proper calibration
- Optimum set-up by Michael
- TOMBO radiator (thanks Tinus) - my old one kept leaking in the top tank

Keep you posted.
Christoph

PS - In the mean time I've also had to fit a new starter (after market Chinese) and alternator with vacuum pump (Hitachi). All done locally in Lichtenburg at TMT Auto Elektries. (One of the brushes in the alternator broke off, which in turn broke the regulator. The car's diagnostics were happily oblivious, but MADMAN picked it up immediately. So, no other damage!)
"Sou die hand van die HERE te kort wees? Nou sal jy sien of my woord vir jou uitkom of nie." - Numeri 11,23

Post Reply

Return to “08. Your Patrol”

Who is online

Users browsing this forum: No registered users and 2 guests