North American Turbocoupe Organization



Louder turbo/Blow off valve noises??
ianbfromct Offline
Senior Member
#1
So weird thing just happened. Driving my car it was fine all day. Park for a bit and take it out and all off a sudden this thing sounds like it has a holset with a blow off valve lol. I'm on a stock IHI running like 18 psi normally with no problem. It runs find outside of boost just sounds wrong and doesn't pull like it used to. I looked at the rubber boots and they look okay. My k and n on the vam is secure. Where should I start looking? Ill hopefully be working in a heated garage tomorrow its 11 degrees outside and its not very motivating to work on my car at this second.
88 5 speed TC
-3" DP,lowered, 255 Walbro, Gillis valve, Cobra R's, bondo/rust, Stinger's PIMP Ecu
Reply

Not B Anymore Offline
Posting Freak
#2
Take the VAM hose off and see if the turbo has a lot of play in the shaft.
Brian Leavitt
'86 TC 5-Speed -- MS2x w/COP | 83 lb. injectors | T3/T4 50 Trim Stage 3 .63AR | Full 3" Exhaust - No Cat | Motorsport FMIC | Ranger Roller | Ported E6 | Walbro 255HP | Kirban | 20psi | 120-amp 3G | 8.8" 3.55 rear | '03 Cobra Wheels
Reply

natmac3 Offline
Administrator
#3
maybe a crack in the exhaust somewhere near the turbo/downpipe?
1987tc
Reply

ianbfromct Offline
Senior Member
#4
So get this..I braved the cold and took off my top mount to check out the rubber boots real quick. I attempted to try to grab the impeller shaft and from what I could tell it was bad but I need to take off the inlet to really feel it out.
Anyways I slap it back together and take it for a what the hell ride and see if its still doing it and whalah its fine..im wondering if its maybe a hung up waste gate arm or my bootleg manual boost controller.

Oh yeah I also got pulled over 20 ft from my house for speeding because I wanted to see if it would do it (which it didnt) lol. Luckily I know the right people and was let off.
88 5 speed TC
-3" DP,lowered, 255 Walbro, Gillis valve, Cobra R's, bondo/rust, Stinger's PIMP Ecu
Reply





Users browsing this thread:
1 Guest(s)



Theme © iAndrew 2018 - Software MyBB