[Wornes]

Thanks
Yeah mech fuel pump with the boost compensator swapped over from my old 2lt.
I see what your saying about the intercooler. Never actually thought of that before you got me thinking now. I haven't actually installed the turbo and intercooler yet, just been awaiting for some spare time now that all the parts have turned up. I don't really want to put a great big hole in my bonnet (for my scoop) only to find its actually hindering my cooling.
I did have a quick look earlier about intercooling and WI but didn't find if it was any better to run intercooler or not.
Maybe some one who has had some experience will be able to shed some light on this?

[Terry Syd]

Here's a thread on setting up the mechanical pump -

Toyota 4WD Surf Owners :: View topic - 2LT Boost compensator

I'll see if I can find some information on the use of intercoolers and WI together. You may find that you can save chopping a hole in the bonnet and just rely on the WI, after all, you won't be running some outrageous boost pressures.

Here's a link I've posted before, its pretty good as it has a chart showing the various temperatures pre-turbo and later through the intercooler. Basically, the more water pushed through the system the less effective the intercooler was. Just disregard any references that are only relevant to petrol engines.

http://www.max-boost.co.uk/max-boost/intake/WI.htm

[Wornes]

Yeah thanks,
I've read that thread on the boost compensator before, i think i even made a contribution to it as well.

I'd rather run the intercooler as well, but if its going to hinder the setup i will not use it. My concern is what happens if i'm out bush touring and the WI system gives up the ghost, i'ld have to dial my boost and fuel down and drive (possibly for a very long time - days or even weeks) with rubbish performance, where as with intercooler i can dial the fuel and boost down and still get good performance from it .

Who says i'm not going to run outrageous boost pressures?

Any way sorry for hijacking your thread. I'll let you have it back now...

[syphear]

I finally got the kit installed, mine came with a M3 and M5 injector for some reason. I have the M3 installed pre-turbo so it will be interesting to see if the turbo compressor does start eroding. I just acquired a 2nd hand working CT20 turbo so it can be my spare if required.

What size water tank are you guys using and where have you located it? I looked at using the windscreen washer bottle but it looks way to small and it had slime in it.

[Terry Syd]

Wow, an M3 pre-turbo! Keep us up to date on how it is working. I found that the M2 worked well in the pre-turbo position. If I am running straight water then a total flow of an M4 is about all the engine can take before it is loosing power. However, if I bump up the methanol content to 20% the engine will take the M4 flow at the higher revs (with more power added).

If you are dampening the power in the lower revs with the M3, then try some alcohol in the mixture and 'lean' out the water.

I have a 15 litre 'cube' in the tray of my ute (I don't have a Surf). I went big on my container as I had the room in the tray and I didn't know how much water I would use. Now that I have settled primarily on the M2 pre-turbo with the auxillary M2 for extra cooling, my water/meth consumption has dropped off. The single M2 uses much less fluid even though I have the pressure switch set around 3 psi.

Now that I know the consumption rate I will probably build a 10 litre tank to sit behind the back seat in my dual-cab ute.

Since you have a spare CT20 you might want to do some porting work on the spare turbine housing. After you get it ported you could just swap it onto the other turbo. Here's a thread on the CT20 with a bit about porting the housing.

Toyota 4WD Surf Owners :: View topic - CT20 turbo differences

[killerbee]

I am using 8 nozzles pre-turbo, all axially aligned with the airflow. On a 6.6L TD.

[Dust]

Pics, please.

[killerbee]

Patent Pending

[chang-kuao-lo]

Terry, does this schematic represent accurately what you have under the hood? I'm trying to emulate what you have, and I want to make sure I have a complete parts list before ordering anything. From what I can gather your system is wired pretty much the same as included instructions, other than the capacitor on the ground pin on the relay. And the extra switch for the solenoid on the post-turbo nozzle.

[Terry Syd]

You can eliminate one check valve from the schematic. I don't use an in-line check valve before the split in the system. The check valve on the pre-turbo nozzle stops the flow at that point, and the solenoid on the post-turbo nozzle stops the flow at that point.

The M2 pre-turbo is working fine, I use it 99.9% of the time. The smaller M2 can be triggered early (3 psi) to help spool up the turbo and doesn't bog the engine at lower engine speeds. I only use the second post-turbo nozzle (M2) when I am climbing hills. I'll find out this summer when I am moving and pulling a trailer if I need to increase the post-turbo nozzle to a M3 for the hills.

If I was going for maximum power, I would run a M1 post-turbo and have it triggered with another pressure switch to come on at about 7-8 psi. By having two pressure switches instead of a controller the pre-turbo nozzle always sees high pump pressure and keeps the droplets smaller.