Thread: VNT Turbo and Performance Mods - 300 Tdi

Diesel Gas went on during the week

It has dropped fuel comsumption down to about 8.5L/100km for diesel which is great

And it has transformed the driveability of the thing, it is now easy to swing out and overtake; no knocking back to 4th. Just stomp it in 5th and the thing responds

I also wound the fuel screw back 1/2 a turn to cool the EGTs down

Good news so far re diesel gas. You must be up to quite a few bikkies chasing performance on the old 300tdi. Be interesting to dyno it. After my fuel pump tweak on standard 29" tyres I got an almighty 62kw at the wheels, haha.

Your fuel economy figures, were they on the BFG muddies in your pic? Are they 33's? That is pretty good if they are, I am averaging around 12.5L/100 on my 33's with roof racks on (similar setup to you)

750* is pretty high, but I take it if you back off throttle a tiny bit they go down dramatically yeah? Did gas increase or decrease EGT's? I can easily hit 720* @ 16psi been silly under load up hills, but its easy to keep them around max 650* with a bit of throttle control.

Do you still get full govt rebate ($2k ?)for diesel gas? Approx how much out of pocket were you?

Overtaking for me is basically a no no, or plan 5 mins in advance on a down hill run with a tail wind.

Sorry for 20 questions!

Cheers.

Originally Posted by Jock The Rock

Diesel Gas went on during the week

It has dropped fuel comsumption down to about 8.5L/100km

Tell more about the gas gizmo?
Pics?

Originally Posted by zuno555

Good news so far re diesel gas. You must be up to quite a few bikkies chasing performance on the old 300tdi. Be interesting to dyno it. After my fuel pump tweak on standard 29" tyres I got an almighty 62kw at the wheels, haha.

Let's not talk about the bikkies I've got a few more things to do to it before I dyno it and claim it finished engine wise

Your fuel economy figures, were they on the BFG muddies in your pic? Are they 33's? That is pretty good if they are, I am averaging around 12.5L/100 on my 33's with roof racks on (similar setup to you)

Yeah on the Muddies all though they are 235/85s (31.5's). I used to be getting about 12.5 with the roof rack on, and I don't drive slowly

750* is pretty high, but I take it if you back off throttle a tiny bit they go down dramatically yeah? Did gas increase or decrease EGT's? I can easily hit 720* @ 16psi been silly under load up hills, but its easy to keep them around max 650* with a bit of throttle control.

Yeh I don't like taking it above 750 for very long at all. I had it fueled up a fair bit, when I took it for a spin on gas the temps flew up to 720 with a small load up hill. So I have wound the fuel screw back 1/2 turn and it seems to be back where it was.

Do you still get full govt rebate ($2k ?)for diesel gas? Approx how much out of pocket were you?

Yeah the buggers have dropped it to $1750 then to $1500 for all conversions after June 30th. But yeah I will get the full $1750. The way bee utey did my conversion it cost me about $200 (after the rebate). Apart from travel from Tassie and a damn good holiday along the way

By far the cheapest and best upgrade I've done so far


Overtaking for me is basically a no no, or plan 5 mins in advance on a down hill run with a tail wind.

I should have taken you for a spin while I was in Melbourne waiting for the boat

Sorry for 20 questions!

Cheers.

Originally Posted by Michele

Tell more about the gas gizmo?
Pics?

Pics will come soon enough

Originally Posted by Jock The Rock

Well it now flies, for a Defender


So anyone after a stock 300 Tdi head, complete with valves? (Done 105,000km)

Stock 300Tdi head with valves you say... Wonder what it would cost to get over here (NZ) - mine is on borrowed time, and they aren`t exactly thick on the ground in NZ

Originally Posted by NikolaiV

Stock 300Tdi head with valves you say... Wonder what it would cost to get over here (NZ) - mine is on borrowed time, and they aren`t exactly thick on the ground in NZ

Sorry mate I sold it a while ago

I still have the stock turbo for sale if anyone is interested though?

Best place I can suggest for a new/reconditioned head is these fellas: Home

Very easy to deal with, and postage was 3 days from the UK to Tassie

Originally Posted by Michele

Tell more about the gas gizmo?
Pics?

Hey mate

I finally got around to uploading the pics

Do you have LPG for cars over there?

Mounting of the tank:





Converter:



Gas:

Originally Posted by NikolaiV

Stock 300Tdi head with valves you say... Wonder what it would cost to get over here (NZ) - mine is on borrowed time, and they aren`t exactly thick on the ground in NZ

Mate being a kiwi myself i would go for the Isuzu Mu 2.8 Tdi motor change the whole motor gearbox and transfer, should line up with the the axles. be cheap there.