Thread: Isuzu torque.. Off the line.

not quite but pretty close....

from idle to about 1000 rpm the suzi has it over the tdi, the tdi then starts to come on boost and thats game over for the 4bd1....

then you can drop a turbo onto the suzi and its all over for the tdi, the td5, the puma donk(s) and if the maths is right, your willingness to make the 4bd1 breath, you're brave enough winding out the fuel screw its all over for pretty much every stock trim diesel landrover has come up with.

yes I omitted the revered 2.25D because in this game its pretty much going to take a back seat roll from the get go and be relegated to a starting engine.

but when it comes to reliably making the power the 4bd1 will make the power the stock tdi(x)00s do at the bottom end pretty much until the sun goes out and you never have to worry about the timing belt.

What? The TDIs do not come on boost until 2000 rpm.

It is night and day. The non turbo Isuzu pulls like a train from idle and still has more power than a well set up TDI. A turbo Isuzu destroys any TDI.

Originally Posted by Red90

What? The TDIs do not come on boost until 2000 rpm.

It is night and day. The non turbo Isuzu pulls like a train from idle and still has more power than a well set up TDI. A turbo Isuzu destroys any TDI.

tdis begin making boost at 1000 RPM,

you might want to sit down with an actual set of power charts for both engines. full boost is available from 2000 rpm onwards in the tdi. (in stock trim, modded, you can get it wound on down around the 1500rpm mark and go well over stock boost levels)

in how the power gets delivered and how the engines handle bogging down is 2 completely different kettles of fish but that wasnt what was asked....

if thats going to get asked..

4bd1 you drive like a truck/tractor
tdi's like to rev a bit more.

a 4bd1-t.... well you drive that just however the hell you feel like and it will pretty much just dig in and go until the vehicle is over 4.5t and on a hill.

I'm willing to take even bets on which one of us has sat both perenties, tdi and td5 defenders side by side and had at it... I may even still have the calander with the dates for the quarter, 0-100 and 0-100-0 elapsed in it.

Diesel engine makers normally specify 800 rpm as "clutch engagement" and available torque at this speed is significant in operation. I don't have torque and horsepower charts for either 4Bd1 or 300tdi. I will add my personal feelings that the 300tdi was a rather feeble engine like nearly all LR offerings back then. Some of the reasons LR lost their Australian market was lack of power and unacceptably low cruising speed.

I’ve driven dozens of TDIs. None of them make any boost until 1500 rpm and that is with a VNT. A normal wastegate one starts boost at 1700 and does not climb hard until 2000. Then the power comes on.

I own an Isuzu Defender and a TDI. My TDI is done up as well as any out there. Ive never seen one as fast. I’ve driven the two trucks together for days on end over hundreds of mountains. I know exactly how they compare.

Despite what the power ratings state the Isuzu has as much power as any well setup TDI. It is simple to check with top speed runs. Now when you add a turbo it is not even worth having a discussion.

Make me a video with a TDI boosting at 1000 rpm.

Ok, so riddle me this....

Stationary, 1800 kg worth of trailer on the back, flat ground engine warm.

Will the Isuzu allow you to move off the line without stalling and without revving it?

Cheers
James

Ps. I'm not concerned about which makes the most power , just power/torque off idle

Originally Posted by shack

Ps. I'm not concerned about which makes the most power , just power/torque off idle

At idle, cubic inches wins.

Here's another..turbo IC Isuzu Perentie FFR v Patrol shorty TD 4.2 IC with Safari turbo..4bd t running @18psi..Patrol @16psi..no contest..Isuzu smashes the Patrol eg..Up one hill..v steep..Isuzu 100kph...Patrol 80kph.

And...the Isuzu stll has more to give☺