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2.8 Diesel Turbo No Boost
Posted: Thu Jan 07, 2010 9:39 am
by old mate
Hi, i have just put a turbo on my hilux 2.8 diesel off a 2.4 and it doesnt seem to have any boost. I have checked the wastegate and it seems to be working fine, turbo spins fine by hand both tubines spin together (thought it might have a broken shaft). When i give it a rev the boost gauge shows no boost until i back off then it reads 1 to 2 psi boost, tried different boost gauge and get the same reading. Got me stumped!!
Posted: Thu Jan 07, 2010 10:52 am
by macca81
where is the boost gauge plumbed into?
Posted: Thu Jan 07, 2010 11:11 am
by old mate
on top of the inlet manifold where the crankcase breather goes in on a non turbo motor
Posted: Thu Jan 07, 2010 11:31 am
by hulsty
It wont show boost free reving as there is very little load, go for a drive.
Posted: Thu Jan 07, 2010 12:18 pm
by PBBIZ2
Agree with hulsty, boost will only show up under some load. My nissan doesn't start boosting on the gauge until around 1500rpm when driving, and won't show any boost if revved up in neutral until around 4000rpm
Posted: Thu Jan 07, 2010 12:23 pm
by berad
I would cut the wastegate hose, put a t piece in and plumb the boost guage from there.
Posted: Thu Jan 07, 2010 12:27 pm
by old mate
Thanks guys, have been driving around for 3 or 4 days with boost gauge but boost has never read on gauge. I just bought a manual boost controller and as soon as i pluged it in and started driving i got a reading on the boost gauge :D . Only reading 6psi at the moment but i might wind it up in a week or so just see how it runs at the moment. Where abouts do you guys have your boost gauges plumbed in?