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Big Turbo Discussion Thread #2

G

GreyGti1990

Ready to race!
I guess pink could mean they are the weak springs... I, for the life of me, couldn't see any other colors besides pink.... but I guess there could be a yellow in there somewhere.

Tried to see the whole spring - spent like 30 minutes trying to take a good picture
 
jettaglis

jettaglis

Go Kart Champion
Usually only ko4 turbos don't like the "weak" valve springs. Generally big turbos don't let the valves float.
 
smanierre

smanierre

Autocross Champion
jettaglis said:
Usually only ko4 turbos don't like the "weak" valve springs. Generally big turbos don't let the valves float.
Click to expand...
May be a dumb question but why would big turbo vs k04 determine valve float

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Cadubya

Cadubya

Autocross Newbie
smanierre said:
May be a dumb question but why would big turbo vs k04 determine valve float

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Click to expand...



Back pressure. K04’s are meant to generate 250hp of flow. When you tune them to 100+ more hp they get hot and build up exhaust gas since the manifold isn’t meant to flow that much.
 
G

GreyGti1990

Ready to race!
Cadubya said:
Back pressure. K04’s are meant to generate 250hp of flow. When you tune them to 100+ more hp they get hot and build up exhaust gas since the manifold isn’t meant to flow that much.
Click to expand...

Cadubya, looks like you have a 2011 (same year as me) k04 gti, any problems with valve float?


Edit: Just clicked your build thread and see you have the upgraded APR valve springs and bigger turbo lol.
 
Cadubya

Cadubya

Autocross Newbie
GreyGti1990 said:
Cadubya, looks like you have a 2011 (same year as me) k04 gti, any problems with valve float?


Edit: Just clicked your build thread and see you have the upgraded APR valve springs and bigger turbo lol.
Click to expand...



I didn’t have any valve float issues when I was K04. The valve springs were acquired later when I was upgraded the turbo.
 
G

GreyGti1990

Ready to race!
Cadubya said:
I didn’t have any valve float issues when I was K04. The valve springs were acquired later when I was upgraded the turbo.
Click to expand...

Glad to hear it
 
C

cybonic

Passed Driver's Ed
latest logs from mine rev1 map with 18degrees advance timing, running 80% meth, stock fueling. having slight timing pull

 
L

LAGP

Ready to race!
Metal plate throttle body

After having replaced 2 TB with the plastic plate broken, I just found a replacement OEM TB wit a metal plate and it has the correct rotation part number is 06K133062D. This will be useful for high boost levels or when spraying meth pre TB.
 
L

LAGP

Ready to race!
LAGP said:
After having replaced 2 TB with the plastic plate broken, I just found a replacement OEM TB wit a metal plate and it has the correct rotation part number is 06K133062D. This will be useful for high boost levels or when spraying meth pre TB.
Click to expand...
Here is a picture


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HYDE161

HYDE161

Go Kart Champion
LAGP said:
After having replaced 2 TB with the plastic plate broken, I just found a replacement OEM TB wit a metal plate and it has the correct rotation part number is 06K133062D. This will be useful for high boost levels or when spraying meth pre TB.
Click to expand...

Seems to be a 2015 Volkswagen Jetta 1.8L Throttle Body
 
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