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VW B5 Passat TDIs This is a general discussion about B5 Passat(>98 (2004-2005 in North America)). Non TDI related postings will be moved or removed.

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Old September 10th, 2013, 10:57   #16
abctdi
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Often times higher boost leads to higher EGT, but if the turbo is bigger this may not be the case. Knowing both and their limits is a good idea for longevity.
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Old September 10th, 2013, 11:54   #17
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I'm curious why he downgraded your turbine wheel from one that is rated at 170hp to one that is rated at 150hp.

The stock BV43A pumps out 26psi happily with EGTs in check.

High boost does not equal high EGT. Pushing the capabilities of the turbo does. There is a Compound B4 wagon on here running 50psi and he has a hard time breaking 1000F EGT.

Do you have any more pictures of this turbo?

Jon
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Old September 10th, 2013, 19:50   #18
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On the BHWs, they have an EGT probe as stock.
Group 67 in VCDS, in Deg C.

My RC1+ ran to 876 Deg C under WOT, which is 1600 Deg F.
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Old September 11th, 2013, 07:03   #19
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Quote:
Originally Posted by CharlieT View Post
On the BHWs, they have an EGT probe as stock.
Group 67 in VCDS, in Deg C.

My RC1+ ran to 876 Deg C under WOT, which is 1600 Deg F.
I should do a WOT log ASAP to see how high they are. Does anyone have any data on the limit the BHW pistons can take and for how long?
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Old September 11th, 2013, 07:07   #20
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pistons won't be the limiting factor, your turbine will melt before the pistons do.

Your turbine is rated at 1650F, the BV43A turbine is rated at 2000F
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Old September 11th, 2013, 07:20   #21
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Quote:
Originally Posted by JFettig View Post
I'm curious why he downgraded your turbine wheel from one that is rated at 170hp to one that is rated at 150hp.

The stock BV43A pumps out 26psi happily with EGTs in check.

High boost does not equal high EGT. Pushing the capabilities of the turbo does. There is a Compound B4 wagon on here running 50psi and he has a hard time breaking 1000F EGT.

Do you have any more pictures of this turbo?

Jon
NO more photos. I'm sure Frans would furnish some if you asked him. The turbine side is fat and beefy too compared to the VA. I assume you mention the 150 hp fom the vb turbine wheel? I got the mildest hybrid he offered because of stock injectors and slushbox. I'd love to get this car on a chassis dyno. I'm sure with the stage 2 tune it's easily pushing out 180hp. Also no more whining, just normal sweet sounding turbo boost (whooswh and scream at WOT)!
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Old September 11th, 2013, 07:23   #22
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Originally Posted by JFettig View Post
pistons won't be the limiting factor, your turbine will melt before the pistons do.

Your turbine is rated at 1650F, the BV43A turbine is rated at 2000F
So as long as my EGT is <1650F, no worries for pistons or turbo?
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Old September 11th, 2013, 08:24   #23
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As long as you have a good tune and your injectors aren't streaming - yup!
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Old September 11th, 2013, 10:46   #24
50harleyrider
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As long as you have a good tune and your injectors aren't streaming - yup!
Injectors streaming? You guys are killing me with acronyms. I assume streaming means too much fuel from bad injectors,tune or what? This would translate to high EGT?
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Old September 11th, 2013, 11:14   #25
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streaming isn't an acronym, its what you do when you go to the bathroom, lol

You'll be fine, drive more worry less.
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Old September 11th, 2013, 12:15   #26
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Richard, you have the "standard" bv43a, which I modified for optimum durability and reliability. Will be good for approx 200 hp.

I also have (garrett) hybrids for these passats, up to 240-250hp.
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Old September 11th, 2013, 13:19   #27
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Thanks Frans,
Your turbo is awesome
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Old September 11th, 2013, 15:44   #28
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Is there a way to tap into the probe wiring to install an EGT gauge?

Quote:
Originally Posted by CharlieT View Post
On the BHWs, they have an EGT probe as stock.
Group 67 in VCDS, in Deg C.

My RC1+ ran to 876 Deg C under WOT, which is 1600 Deg F.
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Old September 11th, 2013, 15:48   #29
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absolutely do not tap into that wire, do not cut or splice. -ETA- thermocouple wires - look it up

You'll have to install a separate probe.

Last edited by JFettig; September 11th, 2013 at 15:52.
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Old September 11th, 2013, 20:36   #30
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That's exactly what I was thinking. Is there an "easy" spot to insert a probe?

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Originally Posted by JFettig View Post
absolutely do not tap into that wire, do not cut or splice. -ETA- thermocouple wires - look it up

You'll have to install a separate probe.
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