Jump to content
SAU Community

Recommended Posts

I know there is nothing like actually seeing the thing in real life, but just want to know if anyone has any ideas.

Just replaced the turbo with a GCG last night, results good, but just after any major job you listen for noises. One noise i get is at about 1100 RPM, my injector area (pointed to by a mate) makes a rattling noise like as if a nut was in a metal plate sitting on my engine block.

This noise does not occur in nuetral, only when under load (was against the torque converter)

I cant find anything where it actually is a nut or bolt, but I will have another look. Apart from that, any ideas guys? I am only scared driving with it will be worse then not in the end.

Also, the noise is not constant. Its only happening when cruising or accelerating, not when on boost (also higher RPM)

The noise isnt so much a rattle, but it sounds pretty much exactly like a VN commo acclerating away, that kinda rattle/ticking noise (minus the exhaust noise naturally)

Its quite loud also, loud enough ive never heard it before. To be honest, it sounds like a noise I heard when the car was stock but just a LOT louder and worrying. The other noise I heard on idle with humble (on his car too) but this is something different. I can hear it inside the cabin with the windows up quite easily.

I beleive i have solved my own issue

A note to everyone as well

I have a split dump pipe, it has a splitter in the middle. When the car is just slightly reving so the wastegate is only slightly open, it rattles against the splitter.

I will get it cut off and a new splitter rewelded on bent a bit furthur away from the wastegate

Well solved Alex.

I might have to drop my Stag off to you for a full service & tune next, with a full 200-point safety check!!

Joke LOL, Brendan ;)

Edited by Tangles
i have a GCG. Quite laggy / Stock boost.

Umm, yeah, thatd be right

They are most efficient above 1Bar (arnt they???)

But Im sure once the ECU is done and dyno'd then you'd find it to be Perrrfect, with what, 200awkw?

uhh, 7, 8 around that area. My Jaycar EBC is on 100% duty in the high RPM.

Ill tell you what though, even though power doesnt come on really until 4000rpm ish, when it hits....mate for stock boost... it hits. For me to get from 4000-7000rpm in first no shit takes 1.5-2 seconds MAXimum.

Ill grab my mates dad mega Gtech (not the eBay one, the laptop version one) and let everyone know what I am gteched at compared to my calder run of 14.7

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • All trim back in wired running driving. Few things to follow up on but not far off the return to the road. att.6HN4wP38LTIOISkhA8eACoBFqzfgQMahZPLA8ut0pqE.mp4 att.w2q0ux2PGuqgQTj2Os13cNHQtqcSEcCAhD_CAXy_IQM.mp4
    • The trouble with phone apps is that they really do not know the sensitivity of the mic on each specific phone, whether there is some sort of cover or skin that can change that, etc etc. So the readings off them are not calibrated. You certainly couldn't be sure that you were even within 3 dB. I have the same app on two (actually more than that) different phones/tablets and the readings in the same room at the same time are never the same. I don't mind the apps - they are as useful as a dyno - if you're testing for delta from thing1 to thing2. But not to try to generate some sort of absolute value.
    • I'm gonna use the "Sound Meter" app from the Google Play Store and as close as I can bother to these procedures: 4. TEST METHOD FOR ALL VEHICLES EXCEPT PRE ADR83 IN-SERVICE GOODS VEHICLES AND OMNIBUSES 4.1 Microphone position 4.1.1 The microphone shall be directed towards the orifice of the exhaust outlet and shall be supported by a tripod or similar device not providing excessive acoustic reflection. The general requirements for positioning microphones are shown in the Appendix. 4.1.2 The nominal axis of maximum sensitivity of the microphone shall be substantially parallel to the test site surface and shall make an angle of 45 degrees ±10 degrees with the principal direction of gas flow from the exhaust. 4.1.3 In selecting the 45 degree alignment from the outlet of a motor vehicle fitted with two or more outlets, only the angle resulting in the microphone being farthest from any other outlet must be used. National Stationary Exhaust Noise Test Procedures for In-Service Motor Vehicles Page 3 4.1.4 The height of the microphone above the test site surface shall be equal to that of the orifice of the exhaust outlet ±25mm but shall not be less than 200mm above the test site surface. 4.1.5 The distance of the microphone from the exhaust outlet orifice shall be 500mm±25mm. 4.1.6 [Relates to vertical exhaust outlets] 4.1.7 For vehicles fitted with one exhaust outlet the microphone shall be placed so that the greatest possible distance is achieved between it and the vehicle. 4.1.8 [Relates to multi exhaust outlets] 4.1.9 [Relates to multi exhaust outlets] TLDR: 200mm off ground 45 degree angle relative to exhaust flow 500mm from tailpipe exit. (I probably won't use a tripod) Here's a photo, cause I read the instructions wrong myself.
    • No ABS, no TCS, no airbags, no cruise control, no lane departure assist, no emergency brake assist, no orange lights in the mirrors (continuously annoying me in multi-lane traffic), no stupid rear view camera. I am the one responsible for where my car goes and how it does it.
    • Cheapest Jaycar one is only $65.
×
×
  • Create New...