TD42T Fuel pump upgrades

[audiostu]

I have a 2000 TD42T factory motor, modified intake manifold, Garrett 2860r high flowed ball bearing turbo, 3 " mandrel xzorst. My question is 2 fold. 1. What is the size of the plungers in thus pump. 11mm ? 2. What are some of the options if I have the pump up graded, any comp guys out there wish to add a little wisdom to the secrets of big torque diesels. I am putting together a intercooler combination at the moment and a boost range of approx 20 - 22 PSI for some kind of reliability. Any ideas would be cool. Cheers. Stu

[audiostu]

OK. Appears very quiet on this topic, any good diesel i/p specialists they can recommend ?

[nissannewby]

You could go to a 12mm plunger or even some cam plate modification which effectively gives you more stroke in the pump (similar to that of the increased bore size) if planning on running big numbers get onto diesel central in gracemere they do some pretty nifty work with the td42 inc a 300+hp atw one (very impressive) and also i would scrap that turbo they arent quite suited to the td42.

[audiostu]

No disrespect but what is wrong with this turbo. It spools nicely from 900 rpm and runs solid right the way thru to 3000 rpm. I tend to drive it around the 2000 mark which is about the peak torque spot for it. It pulls very smooth thru this range and after being in many different configs of this motor it is one of the better ones for the road. No lag, plenty of torque for a day to day type of set up and best of all no lag. Would you have any suggestions as to a better turbo setup for it. Sure the TD05 are nice but most people are looking for too larger horsepower out of these and they can get a little laggy down low in a more standard type of street tune with the size of the turbines 18's and 20's which would require a solid I/P to keep up. Mine spools very quickly and a pump upgrade seems to be the answer to get rid of the flat spots around 2500rpm. You can smooth them out by maxing out the pump but that just puts unneccesary pressure on the pump. I'd love to run 300 ponies out of mine but they produce some serious smoke in the process. 200 to 220hp atw is more than enough to keep you excited every time you drive it, especially with the over zelous QLD transport gentlemen up here around Caboolture. Cheers.

[nissannewby]

If its what you like then stick with it. They are great for what you have stated but start to lose efficiency once you try pushing more boost out of them I was just thinking along the lines of you wanting bulk power no harm done :). Yeah getting your pump will probably help with your flat spot. Im not sure if you are running one but have heard of some people running a electric fuel pump which has helped to remove this flat spot.

[audiostu]

Do you mean like a pick up pre pump to assist the I/P. The flat spot only appears under heavy acceleration, but is not apparent when you go a little easier on the right foot. I have had the pump wound up on the last dyno tune and 145 without the intercooler was recorded but we then de tuned it to ease the egts until the I/C gets fitted ( when I get time). You know how it is. Never enough time for the toys with kids. Have you ever had anything to do with MTQ, they say that they can build a pump for me to fit the bill, but I don't want to jump in on the first work shop I speak to. I contacted diesel central up north and yeah they can build some serious gear but the down fall is he admits they are a little smokey for the street but make great numbers, I would hope for just over $4000.

[nissannewby]

Yeah mate MTQ are quite good have been in the diesel and turbo game for a while they do supply turbos for diesel central and united injection but i am unsure if these guys then modify them further. Yeah fit a small pump before your filter but as you have said a worn pump can also have the same effect. Yeah if only there were more hours in a day. Are you just looking at a pump build?

[audiostu]

Well at this point I am starting to look at the powering up stage after I did the 3ltr to 4.2 conversion. Ive just ticked over 10,000 ks since I did the conversion last September, and now want to start winding up the fun factor. Most of the driving in the near future will be low range stuff up the hills more than the highway so torque is the key factor I'm looking for more so than max horse power. Thats a tidy truck in your avatar pic. Are you running a TDo5 in that beast? Any info is always greatfully accepted, that's what these forums are for.

[nissannewby]

You will find with low range stuff you are lucky to make boost unless your getting along in maybe 3rd or 4th gear as with diesels they make their boost when under load. Once you get it intercooled you will probably have to get your pump modded to a larger plunger as you were talking earlier to run your proposed 20-22 (which with a good tune should be reliable). I Run a TD05 in my GQ with a few other mods running 14psi not intercooled standard pump and have had it up against an intercooled 16 psi moddded pump GQ and there was nothing in it (this is 2wd street stuff we were playing). The rig in my avatar pics runs a 400 cube small block with hydraulic coilovers,twin transfers,portals on dana diffs and 44" tyres. You can get good driveability and torque out of the standard motors and pump somewhere in the likes of 150-160hp atw. With a modded pump you should be able to push this closer the 200 mark.

[Hunty]

Mate don't worry about the soot our pump is a diesel central creation and its pushing 248.9 hp at the wheels on 35's and soots less then the 2.8 that we had in it. Swaffy is very good at what he does and is worth considering to do the job, only down side is he is very busy.