Totally Gutless Diesel

[ZAPPA]

Need some help. I have a 95 Coil cab with the td42 in it. Has done 230k but is in good nick. Of which Ihave owned it for half the kays and 5 years. It has extractors and a snorkel, have just had the injectors done and the timing checked which they said was 10 thou out. When I say its gutless, I mean that it will struggle to hold 110 on a slight gradient and if there is a head wind your back to 95-100 I even went from 33's to 31's to get a few more revs up at highway speeds and I dont think it is any better and it will drink 90l to do 400-420k. I have also replaced the nissan exhaust for a 2 1/2 system. The other thing is that when I bought it some fool had played with the full load/full fuel screw!! on the pump. If i want to get it right it was going to cost 8-900 bux to set it back to whaere it was. But if I was to turbo it they would play with it anyway!! I thought of a turbo but dont want to have to turbo it to get the same performance as a n/a motor. It is doin my head in. I wouldnt mind if it used 90l if i was doin 135 or something but to use that much fuel and still struggle pisses me off. My 400hp Tonner is cheaper to run

[bogged]

what is the question?

[Tomo_89]

first of all i would check the thimble filter in the fuel pump as they can clog up. its inside the banjo fitting on the fuel supply line on the pump (theres a few threads on here about it). as for the fuel screw it is located at the back of the pump it is a long screw going into the pump with a locknut on it. simply turn it in to give more fuel or out to give less fuel. i run mine about 1/4 turn out with extractors and it seems to run great. it will hold 110 easy with 35s and standard ratios. mine gets about 14l/100klms.
also you should set your valve clearances if thsi hasnt already been done as it will most likely be due for a tune up.
as for the turbo i'd be going for that set up after you iron out any other bugs in it. 230k's isnt all that much for these engines so you shouldn't have any issues turboing it. i know a guy who has got over 600K and only just rebuilt it and is planning on supercharging it and swapping it with the 3lt in his new patrol.
hope this is of some help to you.

cheers
Thomas

[ZAPPA]

Cheers for your input guys, I have checked for the filter in the banjo fitting, its not there!. I have also done the tappets, there were a few a bit loose did seem to help a bit. the only thing I havent done is a compression test, but everything else seems fine. I do alot of country kms so its getting frustrating. I will keep playing . As far as the fuel screw goes is the a set adjustment from all the way in?

[Tomo_89]

The fuel screw isnt set all the way in.. im guessing its set around half way so you can go either way? Are you sure the filters not there? its a fair way down the hole you have to use a bit of wire or the like to dig it out..

as for the fuel screw this thread might help you
http://www.outerlimits4x4.com/phpBB2/vi ... highlight=

[ZAPPA]

Yeah Ive a couple of mechanics try and dig it out but its not there. Ill keep playing with the fuel screw, I wonder if I could get it on the dyno and tune the screw ? Have to look into it

[Dick]

Mine is same year and has no issues at all, it will hold 5th on the highway on almost all hills with a loaded camper on the back..
3" system, slight tweak of fuel, boost controller (13.5 psi), intercooler fan, straight through muffler and no change in timing. I have also blocked off egr system. I had it on dyno and it puts out 140hp at the wheels.. also quite good on fuel, 13 lt 100 avg.
I have std tyres but am going up to 33's.. sorry to be a bearer of bad news but you have something wrong !
Check all simple things (no doubt you probably have) fuel and air filters etc. Dyno is the way to go as you can verify fuel delivery with air fuel ratio analysis..
Oops just noticed its a 95 model, add a turbo and you will be fine.. a mate just fitted a high mount to his GQ and he is over the moon ! massive increase in power and torque and less fuel...

[ZAPPA]

I think the problem lies in the injection pump itself. Just worried about spending $$$ and it not being any better. The high mount turbo that your mate fitted, what was it called? Have seen one high mount advertised and I like the idea that its all up high and out of harms way. I was also told that nissan changed rods and pistons sometime after 95 , so they recomend only slight boost ever heard of that? Not sure what to do for the price of the turbo kit and to get the injection pump done ,will be close to 6-7 grand, I can get hold of a slightly rolled coilcab with a chev for 4k what to do? I have heard that the chev (350) are very thirsty and with the price of diesel here at 1.95 already not sure what to do?

[thehanko]

6-7k for a turbo kit? when our 4.2 got blown it cost about 3k, that was a few years back but 6-7k sounds ridiculous.

[ZAPPA]

When I say 6-7 grand, I mean if there is something wrong with the pump I will have to get it rebuilt, dont expect much change from 1200,maybe more, the turbo to get installed will be roughly 4000 , exhaust maybe 800 , Ive just had the injectors done that was 650. If I do all of this and it is still not what I was expecting Ill be pissed. Ill do a compression test first, if itcomes up all good maybe Ill turbo it. Just not sure which way to go

[BIGDAVET86]

your a few months too late man, ther was a bloke in esperence selling a tricked out GU TD42 with 175kw at the wheels, alegedly. custom manifold and ball bearing turbo, with 4" dump pipe, Water to air intercooled, methanol sprays and modded pump, with aneroid. From memory he was asking $9K, and it was in the quokka for weeks. I had pre-aproval for a personal loan........

I also have a 95 coil cab, also with a N/A TD42
I just got my pump rebuilt and the parts cost alone was $1100. but that was new housing, delivery valves, the works.
And my fuel consumption for a trip from perth to busso on thurday night (120km/h) with 200 star pickets in the back, and back to perth on friday night (100-110km/h, double demerits, so i was a good boy) was 14.8L/100km. I still need to do the tappets, aswell. I still suffer from the lack of grunt when ever a incline presents its self and overtaking is pretty difficult, but it has definately improved the power delivery from 1600rpm to 3000rpm.

Down from 18-19L/100km, pre rebuild. The advance timing assembly on my was so f*cked, the timing was actually retarded until full throttle, when it finally advanced, but only just.

You might need to book it in to a injection shop and see what they say, my quotes ranged from $950 to 'you better set aside 2 grand, son'.

Cheers
Dave

[ZAPPA]

Cheers dave will do that I think, I travel from Esperance to Kalgoorlie every week for work and its frustrating having no grunt but using the fuel a V8 would.Cheers for your help guys
ZAPPA

[Dick]

I think the problem lies in the injection pump itself. Just worried about spending $$$ and it not being any better. The high mount turbo that your mate fitted, what was it called? Have seen one high mount advertised and I like the idea that its all up high and out of harms way. I was also told that nissan changed rods and pistons sometime after 95 , so they recomend only slight boost ever heard of that? Not sure what to do for the price of the turbo kit and to get the injection pump done ,will be close to 6-7 grand, I can get hold of a slightly rolled coilcab with a chev for 4k what to do? I have heard that the chev (350) are very thirsty and with the price of diesel here at 1.95 already not sure what to do?

It was this one
http://www.turboglide.com.au/index.cfm/ ... /index.cfm

A very good non expensive set up!