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Waiste gated
by
dillenger1
on 07 Dec, 2007 06:43
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Why does vw use wg's if they arent needed?I read a post in the tech section,about a wg setup,and it seemed he got shot down for the idea,but to my knowledge volkswagon uses wg's on older td's
thanks ben
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#1
by
jimfoo
on 07 Dec, 2007 07:26
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Because they are needed unless you like replacing turbos on a regular basis.
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#2
by
Slave2School
on 07 Dec, 2007 07:26
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Simple, the VNT turbos didn't exist (well or weren't cheap enough/proven) when VW made the older engines. Therefore not used on the old TD's.
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#3
by
dillenger1
on 07 Dec, 2007 07:32
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Im sorry guys,your probably gonna hate me ,but I meant blow off valve not waisted gate.I just got a little excited.
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#4
by
jimfoo
on 07 Dec, 2007 07:37
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Um, if you are getting excited about your blow off valve, I don't want to know about it.
:lol:
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#5
by
spencebm
on 07 Dec, 2007 09:27
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i thought they put BOV's as back ups for the waste gate in case you make too much boost
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#6
by
jimfoo
on 07 Dec, 2007 10:11
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Too much boost, what's that? :lol: :twisted:
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#7
by
dillenger1
on 07 Dec, 2007 11:24
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i dont know i love the sound of a bov ,but i dont want to run one unless its got function.Please someone tell me theres a function/intended use
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#8
by
Slave2School
on 07 Dec, 2007 11:47
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Absolutely no use on 99.99% of all diesels since there is usually no throttle plate. I did read on here someone used it with a VERY large turbo so that it wouldn't make the compressor surge (something along those lines) upon sudden deceleration.
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#9
by
dillenger1
on 09 Dec, 2007 12:23
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that wasnt enough
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#10
by
Slave2School
on 09 Dec, 2007 12:43
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What wasn't enough? Need more opinions, hit google
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#11
by
jtanguay
on 09 Dec, 2007 22:04
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vw added the BOV to the 1.6's only. even 1.9's have wastegated turbo's but no BOV.
it is just some type of 'safety' device in case the wastegate fails. and funny enough, i actually think that extra boost might be a good idea if the wastegate fails to help cool down those EGT's... but then again it would help lower the chance of runaway and reduce fueling since the LDA wouldn't be getting shoved down its little hole. :lol:
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#12
by
OM617
on 10 Dec, 2007 01:40
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It is not a blow off valve. It is a pop off relief valve to prevent engine damage from too much boost pressure in the event that the wastegate fails.
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#13
by
dillenger1
on 12 Dec, 2007 16:13
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In my manual its listed as a bov.
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#14
by
Slave2School
on 12 Dec, 2007 16:15
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Well that manual is 20 years old
The terminology has changed a bit.