The *official* 300 TDi Performance Thread - Page 6 - Defender Source
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  #101  
Old January 4th, 2010, 10:11 AM
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That's a good question.
It really boils down to what the engine can take. Better materials and design of the block casting, a forged crank rather than cast, a stronger valve train and better flow through the cylinder head will equal better performance. Taking a td5 to 195hp will also play on it's longevity just like pushing a 300, but it take a better block design a cross flow head, over head cam and I believe a forged crank.
Just like any mechanical device, you can make them brighter, faster more powerful but they wear out quicker.
For that reason I figure the VVT is good pretty much to eliminate the turbo lag and widen the power band. I hope to slip the clutch less and have more control off road.
This all reminds me of those old 305 chevy motors twisting off cranks when 283's were making 100 more hp.
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  #102  
Old January 4th, 2010, 10:16 AM
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Quote:
Originally Posted by revor
That's a good question.
It really boils down to what the engine can take. Better materials and design of the block casting, a forged crank rather than cast, a stronger valve train and better flow through the cylinder head will equal better performance. Taking a td5 to 195hp will also play on it's longevity just like pushing a 300, but it take a better block design a cross flow head, over head cam and I believe a forged crank.
Just like any mechanical device, you can make them brighter, faster more powerful but they wear out quicker.
For that reason I figure the VVT is good pretty much to eliminate the turbo lag and widen the power band. I hope to slip the clutch less and have more control off road.
This all reminds me of those old 305 chevy motors twisting off cranks when 283's were making 100 more hp.
Hmmmmm,

So would the VVT be a better addition than crawler gears? That may just make me take the plunge on this as I have been considering lower gears.
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  #103  
Old January 4th, 2010, 10:25 AM
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Having not driven one I couldn't say for sure whether the reduction of turbo lag will offset the need for lower gearing.
The way it sits now my plans were to drop 4.88's in the truck with a 1:1 T case but that doesn't change the first gear for that I figured on using an OD (in the wrong way) for lower gears when starting out, with that I'd use a 1.2:1 case.
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  #104  
Old January 4th, 2010, 12:31 PM
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There are several TD5 postings on YouTube where you can hear the turbo spinning at idle.

Click here--->

Therefore the theory of simply upgrading the turbo on the 300 Tdi may offer power on tap at all RPMs to eliminate the lag at low speeds and take-off from stop.

Follow-up Post:

Anyone know this guy??? http://denver.craigslist.org/pts/1533380492.html
www.redhawkrovers.com
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  #105  
Old January 4th, 2010, 01:00 PM
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I can hear the one in my TD5 but it's not building boost. It's lag is only slightly better than the 300. It's much more a more of a kick in the pants when it "comes on the pipe" I will fit a VVT to the TD5 at some point as well.

I've never heard of redhawkrovers myself.
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  #106  
Old January 4th, 2010, 01:30 PM
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TD5s do not have VNT turbos, so the boost points are around the same. You can get one for them as well.

The are common rail which allows for more power and torque.
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  #107  
Old January 4th, 2010, 01:48 PM
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Quote:
Originally Posted by Buckon37s
I thought it was 4500?

My tach starts bouncing back and forth at about that rpm.
Well you can rev it that high...... but it doesn't sound too happy
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  #108  
Old January 4th, 2010, 07:46 PM
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Quote:
Originally Posted by Jon_Winningham
There are several TD5 postings on YouTube where you can hear the turbo spinning at idle.

Click here--->

Therefore the theory of simply upgrading the turbo on the 300 Tdi may offer power on tap at all RPMs to eliminate the lag at low speeds and take-off from stop.

Christ man you can hear my 300 turbo spinning at idle too, even the stock turbo, thats got nothing to do with it. Its gonna spin as long as the engine is running, but its not spooled up. A turbocharger works by converting otherwise wasted heat energy from the exhaust into rotational energy that compresses the intake air- however at idle there is very little heat energy (compared to while driving) and you will have a hard time finding a turbo designed to spool so quickly anyhow. There is no magic bullet turbo that will spool immediately upon startup and provide power until redline. It requires heat energy to light a charger and your best bet is to find the balance between an upgraded turbo and pump tuning. A variable vane turbo will offer performance over a wider range than a standard type but is going to require some careful adjustments and tuning to set up correctly.
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  #109  
Old January 4th, 2010, 11:05 PM
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Quote:
Originally Posted by mikeslandrover
Well you can rev it that high...... but it doesn't sound too happy
Bullocks, it sounds just fine.

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  #110  
Old January 5th, 2010, 02:36 AM
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I've got a VGT turbo on my Td5, it makes everyday driving much more civilised, insetad of "nothing, nothing, nothing, BOOST BOOST POWER" you get a nice steady stream of torque and power from virtually tickover.
Mine has already been "flashed" (ECU software upgrade) to 190bhp, it's an IRB (Ian Boughan, he also works at the LR factory on powertrain, so knows the Td5's very well) and is dyno'd to show that power.

Trouble is, it's now shown up the weakness in my clutch, which already was worn, spins like a bugger now.... gearbox off soon then in the next few weeks LOL.
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  #111  
Old January 5th, 2010, 05:45 PM
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Quote:
Originally Posted by Buckon37s
Bullocks, it sounds just fine.

Yep, sounds good, my 200tdi doesn't though, 3000 -3500 max is plenty - 70+mph in top gear.
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  #112  
Old January 5th, 2010, 05:54 PM
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Quote:
Originally Posted by mikeslandrover
Yep, sounds good, my 200tdi doesn't though, 3000 -3500 max is plenty - 70+mph in top gear.
200TDIs are governed to 3800 or something like that.
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  #113  
Old January 6th, 2010, 02:17 PM
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Quote:
Originally Posted by Red90 View Post
200TDIs are governed to 3800 or something like that.
4000 I think is the absolute max. I always shudder at the MOT emission test time.
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  #114  
Old January 6th, 2010, 03:58 PM
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Quote:
Originally Posted by mikeslandrover View Post
4000 I think is the absolute max. I always shudder at the MOT emission test time.
Just check the manual. it says "No load (speed cut-off starts) 3800 rpm. No load (flight speed) 4100 to 4260 rpm. I think under load, it will prevent you going above 3800.
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  #115  
Old January 6th, 2010, 05:00 PM
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Quote:
Originally Posted by Red90 View Post
Just check the manual. it says "No load (speed cut-off starts) 3800 rpm. No load (flight speed) 4100 to 4260 rpm. I think under load, it will prevent you going above 3800.
Well I live & learn (never seen the owners manual - only the Haynes book of lies)
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  #116  
Old January 6th, 2010, 05:04 PM
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http://landroveroneten.com/index.php...rover-manuals/

The 200TDI specific info is in "Defender, 90 & 110 Workshop Manual Book 6 Supplement"
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  #117  
Old January 7th, 2010, 05:49 AM
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Quote:
Originally Posted by Red90 View Post
http://landroveroneten.com/index.php...rover-manuals/

The 200TDI specific info is in "Defender, 90 & 110 Workshop Manual Book 6 Supplement"
That is one useful website
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  #118  
Old January 19th, 2010, 02:51 PM
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Hi Guys! Here in Argentina TGV or 2.8 conversion + TGV are common upgrades. Heres my 2.5 Tdi with TGV conversion and it really adds a lot of fun to the engine. I have an upgraded air filter box and filter (not yet installed on those videos) from a 170HP Nissan diesel pick-up truck and I have an IP from a 2.8 ready to install. Now the original IP is tweaked a little bit. Next mod will be upgraded intercooler but that yes is expensive to get here...







We can get every part to do it here and at a reasonably low price. What I had to fabricate/make was new air intake duct parts, an oil charge hose for new turbo and modify a plug from the oil discharge from turbo to make it fit.

In Spanish this is what Ive done... http://landroverclub.com.ar/viewtopic.php?t=99218

Regards,
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  #119  
Old January 19th, 2010, 03:23 PM
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Do you know Tato?!?!
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  #120  
Old January 19th, 2010, 06:20 PM
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Yes Keith, I know Tato. In fact you and I exchanged some mails almost a year ago for a set of shafts for a friend of mine here.
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