spool time
08-11-2005, 10:57 AM
#1
1.5 BAR
Thread Starter
Join Date: Aug 2004
Posts: 710
spool time
i have a 42/48 turbo on a b18b and i am getting spool around 4500 and a nice kick at 5000rpms. i think my wastegate isnt fully shutting, but I have no idea how to check that. could it also be because it is an old turbo? i thought those things were supposed to get like FULL spool around 3500. any ideas on what it could be? also if you have a vacuum line that doesnt go to anything and originates from the vacuum port and is not connected to anything, can you have any problems with that? because that's considered a vacuum leak...right? thanks
08-11-2005, 11:31 AM
#3
3.0 BAR
Join Date: Sep 2003
Posts: 3,751
Re: spool time
Ya doesn't sound right. if you can wiggle the Flapper a little, it leaks. Try just putt a few washers between the wastegate and where it bolts too to put more tension on the arm. My 14b was doing this at the beginning of the season, and now all is good.
08-11-2005, 03:57 PM
#5
1.5 BAR
Join Date: Mar 2004
Posts: 688
Re: spool time
Originally Posted by samson
Full boost by only 3500? Shooooooot, I get 10.5 psi full boost at 3700 on my y8 in 3rd gear.
JP
JP
Word, my a6 starts spooling that turbo at 3grand and im to 10psi before 4grand. Like bumblezc said start shimming with washers, It might take a bit of screwing around with it so be prepared to burn your hands!
08-12-2005, 01:20 AM
#6
3.0 BAR
Join Date: Jun 2003
Posts: 3,975
Re: spool time
Originally Posted by DeleriouS
also if you have a vacuum line that doesnt go to anything and originates from the vacuum port and is not connected to anything, can you have any problems with that? because that's considered a vacuum leak...right? thanks
you have a stock exhaust? what size downpipe and exhaust? what turbo manifold? you running any air filter/screen?
08-12-2005, 02:03 PM
#7
1.5 BAR
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Join Date: Aug 2004
Posts: 710
Re: spool time
Originally Posted by whiterice
Originally Posted by DeleriouS
also if you have a vacuum line that doesnt go to anything and originates from the vacuum port and is not connected to anything, can you have any problems with that? because that's considered a vacuum leak...right? thanks
you have a stock exhaust? what size downpipe and exhaust? what turbo manifold? you running any air filter/screen?
08-13-2005, 01:24 AM
#9
Guest
Posts: n/a
Re: spool time
Originally Posted by DeleriouS
i have a 42/48 turbo on a b18b and i am getting spool around 4500 and a nice kick at 5000rpms. i think my wastegate isnt fully shutting, but I have no idea how to check that. could it also be because it is an old turbo? i thought those things were supposed to get like FULL spool around 3500. any ideas on what it could be? also if you have a vacuum line that doesnt go to anything and originates from the vacuum port and is not connected to anything, can you have any problems with that? because that's considered a vacuum leak...right? thanks
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