Outer Limits 4x4 Board

I have 93 gq td42 with 178 k on it. I have had a fair load of diesel vehicles over the years but I find this Patrol has almost an engine sound of its own. Don`t see many over here but managed to hear one the other day and it sounded exactly like mine......a kind of chuffing whirling sounding diesel. Sound familiar to you guys? I actualy prefer the sound of my little 2.25 Landy diesel unit. Patrol is bog standard. Anyone else got an opinion on the sound of it?
Alex

tappets need adjusting
see gregorys service manual on how to adjust

Hoonz wrote:tappets need adjusting
see gregorys service manual on how to adjust

How often should the tappets be adjusted?

I wouldn`t have said it was valve clearances myself but I will check it out . Anyone else have a comment on the sound of a td42 as a diesel engine?

Love it to pieces!!!!!
Bigger pipe and a we bit of performance tunning and they go like a cut cat.
All thats lacking is a bit of sound proofing under the bonnet and around the fire wall on the earlier modles such as mine.
We have series three LWB LR with the standard diesel. Horrible. Just Horrible. Noisey clunky sounding old thing. And thats after its been rebuilt.

DieselBoy wrote:Love it to pieces!!!!!
Bigger pipe and a we bit of performance tunning and they go like a cut cat.
All thats lacking is a bit of sound proofing under the bonnet and around the fire wall on the earlier modles such as mine.
We have series three LWB LR with the standard diesel. Horrible. Just Horrible. Noisey clunky sounding old thing. And thats after its been rebuilt.

Thanks Diesel Boy
When you say bigger pipe do you bin everything except the original manifold and just build a new system with same amount of boxes but say two and a half inch pipe. I like the engine too but in modern terms it is as underpowered for its size as Rovers old 2.25.That is prolly why it lasts so long.Saving grace is that its tuneable cos of its strength but that means money. Rover diesel is bound to be noisy.........it was designed in 1958........
Alex

Noisy engine can be: Over advanced injection timing,excessive tappet clearances--should be 0.35mm exhaust/inlet--removing glow plugs helps with turning over engine when adjusting, and worn valve rockers--common if engine has been run on incorrect grade of oil or had missed oil changes..

nick

Thanks Nick.
You dont think that the td42 has a totally different sound to cruiser 80 say although I know that has a turbo. I still think its a funny sounding engine As I say I heard one the other day and it sounded the same.......kind of brash.
Alex

I heard one myself about a month ago and yes it sounds more rough than other diesels, my 2.8 TD sounds much more smooth compared to the 4.2 ...
I guess that's just how it sounds

Yeah thats it......rough. Maybe that`s why I like it. A big mother fucker tractor engine. Great driving GQ in Scotland. Drive for a day and you just might see another one. I`ll stick with them.
Alex

I cheated, i left the pipe the orgional diameter and just romoved all the resrictions, eg, silencers, resonator and flexi joint.
Replaced with a single straight through silencer box.
Big improvement.
Going to 3" pipe on a NA TD42 is quite common over here, but i doubt its really that effective.

Advancing the injector timing up to .075 BDC makes a huge improvement on performance, but more smoke and a noisier engine.
New injectors set to a higher pressure make a big difference also.
I run a foam filter to.

Am starting to get pissed of with people thinking its turboed!!!!!!

I also have a Holly fuel pump , but thats to combat fule starvation caused by the above changes

I just brought a 94 RX 4.2D. 160km It sounds like a tractor at idle, but smooth as when under load!!

Sounds tuff, had the whole thing checked out and that just how they are. Have looked at lots of diesel's in the last few months and the Nissans are a tad more rattly, but tough!!

Listen guys. I`m overwhelmed at all the input on this thread cos theres no info here in Scotland. Even mechs. at main stealers aint worked on one not that I would give them mine to practise on. Thanks.

Alex