4M41, ML Triton Wastegate screech

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4M41, ML Triton Wastegate screech

Postby jobes on Sun Sep 19, 2021 4:01 pm

Did a few things to the Triton a month or so ago and have had an issue arise which I wondered if anyone else had experienced.

Engine Mods:

- Factory modified exhaust, decat, completely straight piped.
- 4" stainless snorkel with custom prefilter into factory airbox w/ K&N filter.
- Stainless intercooler & intake pipes.
- EGR delete, blocked, cooler removed, coolant lines bridged.
- 6K8 resistor into MAF (glue shrunk etc, can't even tell it's been modified).
- Wastegate actuator mod.
- High flowed factory turbo.
- 20% brand new injectors (+hardware). Proper small quantity relearn carried out.
- ARP head studs.
- Dyno tune - 170kW/227HP, 500nm on 265/75/16s Yokohama Geolandar M/Ts.

- Brand new Borg Warner to go on in the coming weeks once I have fabbed up a new stainless exhaust.
- Water/Meth kit that I'm reluctant to use cause this thing already hauls.

I began experiencing a screeching noise which turned out to be caused by the wastegate flap not seating correctly and making a horrendous noise on acceleration - drove for 3 days without actuator connected and manually moved this into the closed position to diagnose; fixed it by removing turbo completely & carbon cleaning it, using a small amount of soapy water to test for air tightness, ground it back to make it seat properly - voila, all fixed.

Anyone else run into this issue? Wondering if occurred organically or if it could be due to my carelessness when carrying out other maintenance modifications.

Cheers!
jobes
 
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Re: 4M41, ML Triton Wastegate screech

Postby RHKTriton on Sun Sep 19, 2021 8:40 pm

Wonder who else in the country would have put their unit through that?

Sounds a complete beast.
Don't let the b'strds get you down!!
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Re: 4M41, ML Triton Wastegate screech

Postby jobes on Mon Sep 20, 2021 5:47 am

RHKTriton wrote:Wonder who else in the country would have put their unit through that?

Sounds a complete beast.

Should have mentioned, I'm based in Wellington NZ :D
jobes
 
Posts: 4
Joined: Sat Aug 21, 2021 4:24 pm

Re: 4M41, ML Triton Wastegate screech

Postby RHKTriton on Mon Sep 20, 2021 5:03 pm

Explains everything... lol.
Don't let the b'strds get you down!!
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