Wastegate.. Help Me!
11-03-2003, 08:56 PM
#12
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Originally Posted by evilT2' date='Nov 3 2003, 09:42 AM
its ported, i can send you pictures of the before and after if you like. there really isnt any more room to open up that turbo without bridging the two wastegate holes. i used a die grinder and a titanium carbide tip to open it up as much as it would allow. ill post pictures when i get home from work
i think i may be stuck going to ane xternal wastegate then cause this boost creep is serious.
kevin.
11-03-2003, 09:04 PM
#13
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Originally Posted by evilT2' date='Nov 3 2003, 09:42 AM
its ported, i can send you pictures of the before and after if you like. there really isnt any more room to open up that turbo without bridging the two wastegate holes. i used a die grinder and a titanium carbide tip to open it up as much as it would allow. ill post pictures when i get home from work
kevin.
11-03-2003, 09:13 PM
#14
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s5 wg is ALOT different than a s4. s4 have more boost creep problems, they are quite a bit smaller. Also remember, what my boost was seeing, i had a manual boost controller. After i ported my wg the most i saw was 12 ... without the boost controller
11-03-2003, 09:24 PM
#15
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Originally Posted by sidewinderx7' date='Nov 3 2003, 10:13 PM
s5 wg is ALOT different than a s4. s4 have more boost creep problems, they are quite a bit smaller. Also remember, what my boost was seeing, i had a manual boost controller. After i ported my wg the most i saw was 12 ... without the boost controller
kevin.
11-04-2003, 07:50 AM
#18
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I know this sounds obvious, but have you verified that the wastegate is actually functioning??? If a line popped off or if the wastegate diaphragm was ruptured, you would get some serious boost creep. Pull off the pressure line to the wastegate actuator and apply air pressure (the FSM says not more than 14 psi, or you'll break it). It should start to move by 5 psi, and be pretty much fully open by about 8 psi. I used a tire pump and a pressure gauge teed into the line to test mine.
I'm also running a stock hybrid, ported stock wastegate, and a manual boost controller. Mine does not creep past the 9 psi that I am currently running, even in fourth gear. Check that wastegate!
I'm also running a stock hybrid, ported stock wastegate, and a manual boost controller. Mine does not creep past the 9 psi that I am currently running, even in fourth gear. Check that wastegate!
11-04-2003, 08:32 AM
#19
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mmmm i cant seem to find those pictures. i think perhaps they were on a hard drive thats no longer in my machine. either way, i assure you its ported to the maximum that the casting would allow without bridging the two holes. they are probably 2x as large as they were when i got the thing. it just seems like the casting was poorly designed for flow purposes.
i always had a problem with that boost creep and could never really get on it in the higher gears without worrying about it exploding. keep in mind that it has the factory wastegate actuator attached to that turbo. if it did for any reason go out, it will be a bitch to replace.
i always had a problem with that boost creep and could never really get on it in the higher gears without worrying about it exploding. keep in mind that it has the factory wastegate actuator attached to that turbo. if it did for any reason go out, it will be a bitch to replace.