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boost adjustment

Tech Talk for Mitsubishi owners.

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boost adjustment

Post by dans-paj92 »

how do i change the boost adjustment on a 2.3 TD NA Pajero?
I know how 2 with a wastegate turbo but this turbo does not seem to have one???
any suggestions would be appreciated.

Dan
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Post by psycronic »

if it doesn't have a waste gate, it would be delivering max boost. Maybe a new exhaust system
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Post by NJV6 »

You may be used to external wastegate's that you can see...? The ones on factory turbo's are internal, in the exhaust housing. You will see a rod coming out the top of the exhaust side of the turbo with a vacuum diaphram on top??
1994 NJ SWB, 3.5, 5 speed manual, 33's, XD9000, 4.9 diffs, Front & Rear ARB's, Safari Snorkel

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Post by dans-paj92 »

so if it didnt have a wastegate... put on a 3 inch exhaust system on it??
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Post by NJV6 »

Surely it has a wastegate..... Otherwise it would be free boosting..... Got a photo?

Put a 3 inch exhaust on it with no boost control and count down to it goes 'pop' :D
1994 NJ SWB, 3.5, 5 speed manual, 33's, XD9000, 4.9 diffs, Front & Rear ARB's, Safari Snorkel

2008-2009-2010-2011 Pavlova in the shed.
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Post by dans-paj92 »

ummmm..... its a factory mitsubishi turbo for a 2.3L turbo diesel pajero, 1983... its supposed 2 b delivering max boost of i think 7 psi or sumfin but i have neva seen my boost gauge go over 5 psi when im drivin it... so is there anyway of making it get more boost??? can this be done on an internal wastegate??
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Post by psycronic »

does the turbo have vacume lines going to it?
NH 2.5TDI LWB GLS
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Post by dans-paj92 »

there is a hose that runs from the diesel pump to the exhaust manifold that bolts onto the turbo... i have my boost gauge running off this line...
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Post by psycronic »

then I believe that is where you would plumb in a boost controller.

these might help

www.turbosmart.com.au and www.turbofast.com.au
NH 2.5TDI LWB GLS
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Post by dans-paj92 »

so wot wud the boost controller do??? does it reduce the pressure going to the wastegate so that there is more boost before the wastegate releases it??
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Post by NJV6 »

Do some reading dude. It'll make it alot easier to explain.

Here is a good start

http://en.wikipedia.org/wiki/Wastegate

Then type other words in the search box on the left hand side ;)
1994 NJ SWB, 3.5, 5 speed manual, 33's, XD9000, 4.9 diffs, Front & Rear ARB's, Safari Snorkel

2008-2009-2010-2011 Pavlova in the shed.
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Post by psycronic »

Set the boost the same way as you would with a wastegate
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Post by j-top paj »

can you post up a pic? it will make it easier
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