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+-- Forum: Engines (https://www.306oc.co.uk/forum/forumdisplay.php?fid=16)
+--- Forum: XUD Section (https://www.306oc.co.uk/forum/forumdisplay.php?fid=11)
+--- Thread: Tdo4 boost problem (/showthread.php?tid=3863)
Tdo4 boost problem - Jenkosowls - 01-06-2012
Trying to solve a problem on tdo4l powered xud. It's running a 11mm pump, lda pin grind, dewast gated and solid gov shim.But it won't boost past 22psi at all tried all sorts to get it too boost past but just won't go past 22 any ideas?
Cheers
Re: Tdo4 boost problem - Toby - 01-06-2012
I've not played around too much with the TD04's myself, but it could be the wastegate spring is being forced open by the exhaust gasses?
You mention that it is de-wastegated, has the hotside actually had some welding done to it?
Re: Tdo4 boost problem - Dave - 01-06-2012
Pressurise your intake system, show boost leaks, especially around your inlet gasket
Tdo4 boost problem - Jtrigga - 01-06-2012
Could be the wastegate still trying to open by the exhaust gases you should weld the gate shut
Re: Tdo4 boost problem - strictly_perv - 01-06-2012
+1 on the wastegate opening. My T2 does this, it's on the standard setting but the actuator feeds been block now. Hit's a wall at 27psi due to the gate opening itself.
Re: Tdo4 boost problem - Jenkosowls - 01-06-2012
Well inlet has threaded a bolts so that appears to be the problem! Couldn't pressure the system enough so sprayed wd round inlet and engine revd it self
Tdo4 boost problem - Jtrigga - 02-06-2012
The threads for inlet/ exhaust manifolds don't last long after several turbo changes.
Re: Tdo4 boost problem - Ruan - 02-06-2012
Boost leak and I bet you the gate is still blowing open.
Re: Tdo4 boost problem - padge - 02-06-2012
i reckon its the semi ecu controlled pump thats on it lol.
Re: Tdo4 boost problem - anto - 02-06-2012
Wastegate isnt any good to them.
I swapped mine to one from a 325tds td04. Problem solved and it seems to have reduced the lag in the boost building.