2.8 TGV performance tweaks - Defender Source
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  #1  
Old August 24th, 2011, 09:17 PM
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mark kellgren
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2.8 TGV performance tweaks

Post up here what you've done to improve on your 2.8 performance!

Santiago, you go first.
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  #2  
Old August 25th, 2011, 01:41 AM
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Santiago
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I´m off my house on a trip for a couple of days and since the list is pretty long I´d rather write up later on when I´ll have the time to do it right. I will, I promise. In the meanwhile I wouldn´t bother to hear other guys opinions also.

My engine, anyways, is a stock 2.5 300Tdi with some "periphericals" from the 2.8HS TGV and other tweaks.

Cheers,
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  #3  
Old August 25th, 2011, 01:16 PM
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David Marchand
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full width intercooler, moderately tweaked fuel and smoke. I've converted to aluminum coolant tank and fuel return/breather. But that's more ricer.

Other than that, I've put the truck on a weight diet lately.
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  #4  
Old August 25th, 2011, 07:01 PM
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Quote:
Originally Posted by dmarchand View Post
full width intercooler, moderately tweaked fuel and smoke. I've converted to aluminum coolant tank and fuel return/breather. But that's more ricer.

Other than that, I've put the truck on a weight diet lately.
I tweaked the timing a little bit (advanced) with the new belt.......probably didn't notice eh? I thought it smoked less, and revved a little quicker.
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  #5  
Old August 25th, 2011, 11:45 PM
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Andrew J. Hutton
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Matt, to advance the timing did you do it inside the FIP or a full notch on the belt? Haven't looked at doing this at all but I'm increasingly thinking I might have slipped a tooth or something; I've checked nearly everything else I can think of and while it'll be a bit early I figure changing the belt would give me a chance to check that as well.
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  #6  
Old August 26th, 2011, 08:13 AM
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David Marchand
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Quote:
Originally Posted by junkyddog11 View Post
I tweaked the timing a little bit (advanced) with the new belt.......probably didn't notice eh? I thought it smoked less, and revved a little quicker.
Didn't even notice over the pulley squeal..

Kidding. I do notice a smoke difference.

I've also been fine tuning the trans kickdown and throttle cable positioning. The kickdown vibrates out of position over a few hundred/thousand miles and you lose the sweetspot on the pedal.
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  #7  
Old August 26th, 2011, 08:44 PM
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Didn't even notice over the pulley squeal..

.
yeah, what was up with that. I thought it went away. Shitty quality serp belt I thought, or did the tensioner go bad.
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new expansion complete. Not only are we the only Rover shop in Eliot Maine...now we're also the biggest.

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  #8  
Old September 1st, 2011, 08:59 PM
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Sorry guys for the delay.

Mi engine is a plain stock 300Tdi that has had its first rebuild at 50.000 miles ago. The tweaking it has is the following:

.- New refurbished Garret VNT Turbo from the 2.8HS TGV engine (Mercosur´s Ford Ranger). The turbo is set to open at low RPMs and blow to peaks of 1.5bar (22PSI). Some pieces where fabricated to make it look like it was stock from factory.
.- Injection pump from the same engine mentioned before and tweaked on almost every screw it has....
.- Full size Intercooler in front of water radiator (home made using the IC core from the 3.0E Powerstroke engine from Mercosur´s Ford Ranger). It´s one big intercooler.
.- Silicon Hoses all around to not loose any boost.
.- Bigger Air filter than stock to let the air flow better as with this set-up it sucks up a lot of air now. I´ve used an Europiclón EP300 from MANN.
.- All intake hoses have been braided on the outside for them not be sucked in at full throttle.
.- Upgraded and almost free-flow exhaust 2.5" wide all the way from turbo to the tail.
.- Water radiator upgraded to 5 rows core and with "tropical mod" on it.
.- EGT, water, turbo, etc gauges to check on everything.

Cheers,
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´94 Discovery Tdi (Webasto equipped)
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