A few more turbo questions

Quoll Officially Full-On Dubber

232 posts · joined Jan 2003 · 6 Dec 2005, 1:22 pm

#435652

G'day folks I have a few more turbo questions
First off would ether of these turbos be suitable for a 1600-1776 turbo setup?

http://cgi.ebay.com.au/Mazda-mx6-turbo_W0QQitemZ4593972958QQcategoryZ72478QQrdZ1QQcmdZViewItem

http://cgi.ebay.com.au/turbo_W0QQitemZ4595400251QQcategoryZ72478QQrdZ1QQcmdZViewItem

(link button wasn’t working)

Also I recently got Turbomanina and have been reading through it and there are a few things it neglects to mention, can you run their jet enrichment system (the one the uses a dellorto jet to enrich progressively with boost) and can you use a BOV on a draw through system?

Thanks
Justin Atkins

pete wood 23 Windows of Awesome

6,828 posts · joined Jan 2004 · 6 Dec 2005, 1:44 pm

#435656

Draw through systems and blow off valves = fireball. With the mixture full of fuel it's an accident waiting to happen if you vent it to the atmosphere in a hot engine bay.

I'm not sure about those turboes, but if they are watercooled, you either need to make up a separate water system to cool them, or find an oil only turbo.

[ Edited on 6-12-2005 by pete wood ]

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shiftyvw Wolfsburg Wizard

523 posts · joined Sep 2002 · 6 Dec 2005, 6:44 pm

#435785

Does a water cooled turbo really need the water hooked up? I was told by a turbo specialist that it isnt neccesary. What cools a non watercooled turbo?

testing 1 2 3...

Jeza Officially Full-On Dubber

353 posts · joined Jan 2003 · 7 Dec 2005, 9:17 am

#435966

pete wood wrote:Draw through systems and blow off valves = fireball. With the mixture full of fuel it's an accident waiting to happen if you vent it to the atmosphere in a hot engine bay.

I'm not sure about those turboes, but if they are watercooled, you either need to make up a separate water system to cool them, or find an oil only turbo.

[ Edited on 6-12-2005 by pete wood ]

Draw through systems shouldn't need a blow off valve. The turbine spins in a vaccum when the throttle plate is snapped shut, as it is between the throttle plate and the heads. The turbo will ideally need a carbon seal (positive pressure seal?) to prevent oil from being sucked out of the bearings when its under vaccum (ie when the throttle is snapped shut).

I have read about people just leaving the water cooling lines open and ignoring them. I suspect this may shorten the life of the turbo if you run it hard (ie hot) a lot. your alternative is to experiement with some water lines and a washer tank of water and see if convection helps cool things, failing that a pump and a small heater core setup.

Oh and I forgot to say Turbo mainia is a little light in a number of areas, have a look for the authors Corky Bell, Graham Bell and Hugh MacInnes at the Library or a book shop. Much better info and better layout without getting lost in the technical detail.

Cheers
Jeremy

[ Edited on 6-12-2005 by Jeza ]

[ Edited on 6-12-2005 by Jeza ]

......random gibberish for today.......

Quoll Officially Full-On Dubber

232 posts · joined Jan 2003 · 7 Dec 2005, 3:16 pm

#436060

ok so no to a BOV, the n12 turbo looks good as the early models were oil cooled and the stock wastegate is set at 7psi. I think I will worry about water injection later on when I need/want more boost 🤓

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