Quote:
Originally Posted by zmw100
the Hino engines would be a true medium duty work engine, I can't knock that - and frankly I don't have enough knowledge about either of them to compare them to cummins, the Hino 6 cyl is a similar design to the cummins, Common rail, 6 cyl inline, loads of torque - but honestly from the spec's it seems pretty under powered... 8L of diesel 6cyl lovin and it only produces 220hp and 520ft/lb - I'm sure it could be tuned for a fair bit more though...
So far you're the only rational argument for a decent diesel offering in a toyota truck  - the fact still remains though that they are looking using the 4.5L twin turbo...
I also don't think any of the daihatsu engines are an option as it appears 16L is the low end, lol perhaps a 4L 1 cylinder model? 
-Z |
The japanese (Hino, Isuzu etc) have had many engines in a similar size/power bracket to the original cummins 6BT's. Knowing how the japanese work I'm guessing those engines probably began life as a re-engineered cummins.
But the big difference is the US has a huge market for big diesel pickups, the owners of these vehicles have a great time winding them up to truely silly power levels so what the cummins engines are capable of is well and truely understood.
In Japan and the rest of the world, these engines are fitted to cab over trucks at around 6 ton capacity. This isn't the market for aftermarket tweaks so information on cranking the snot out of japanese truck engines just isn't out there.
It's not because the engines can't take it, it's because it hasn't been done and publicised.
It's the massive amount of R&D which has been done by the US pickup owners which has given cummins it's very solid foothold. As we all know (even those who argue otherwise) Toyota/Hino/Daihatsu don't currently offer an engine suitable to fit the Tundra and compete in this market. It'll be very interesting to see what they do offer when they take the plunge.