Another MR2... Another project. The "BLACKRAT" Sw20

[Mr-Paulio]

Yeah half way. It will move a very small amount but that's normal. Haha, just ripped it out of one car and slapped it in without checking? No wonder my build is going to take so long, I'll replace all the external wear parts before I put it in.

You forget, it's my #2 child. So it gets no frills. I test drove the donor car around the block and that was it

So this is after about 1hr of spirited driving through the Hunua Ranges today...

[GDII]

Yeah nah. It either hasn't got one or it's stuck open. Even OEM ones fail but after 250k, not 30k.

[GlanzaAtHeart]

Yeah my 3SGTE sits pretty much bang on halfway. Definitely something missing here

[mknz]

Yeah halfway at about 1/3rd concentrate to 2/3 water and about 60% with 50/50

[Mr-Paulio]

So there was a thermostat!

I guess the issue was the internal seal broken in places leaving a small opening where its gone. Even that was enough to affect the temp? Crazy!

BTW its the exact same thermostat I used for my 3VZ.

I also have been messing around with some more rusty "BlackRat" style body mods.

[GDII]

Is that a non OEM thermostat you put in? Hope not!

[Mr-Paulio]

Is that a non OEM thermostat you put in? Hope not!

So just the thermostat not being OE is the only thing that bothers you on this build?

[GDII]

You have built it to your tastes but if you want it to keep running then an OEM thermostat is the only way. Come back to me in 30,000km with the same issue then you'll know why it bothers me. Look at the build difference between the two!

[Mr-Paulio]

You have built it to your tastes but if you want it to keep running then an OEM thermostat is the only way. Come back to me in 30,000km with the same issue then you'll know why it bothers me. Look at the build difference between the two!

Yeah true, but 30,000ks. That's like 6+ years for this car!
I can live with that!
(If I still have it that long...)

[Mr-Paulio]

Anyone had issues with silicone hoses to the wastegate?

Disclaimer: It was like this when I got the engine...

Or any other strange boost creep issues they resolved?
I didn't mind before when it was hitting 14psi without any boost control.
But just today its started hitting 16psi and boost cut. Which is super annoying! So time to sort it.
Interestingly the hose looks fine. No splits or damage. And on my drive today it was 16psi and boost cuts all the way there. Then 12psi and fine all the way home. Until just before home it started boosting more again. My guess is the silicone hose stretches to much and perhaps leaks at the ends?
So I'm probably going to replace this with rubber anyway to be safe.
Just thought I'd ask if anyone has had similar issues?

My old GT4 also would change between 10psi and 14psi depending on its mood. We never got to the bottom of that. I just put a controller in to keep it at 14

[GlanzaAtHeart]

Anyone had issues with silicone hoses to the wastegate?
20200925_122834.jpg
Disclaimer: It was like this when I got the engine...
Or any other strange boost creep issues they resolved?

I didn't mind before when it was hitting 14psi without any boost control.
But just today its started hitting 16psi and boost cut. Which is super annoying! So time to sort it.
Interestingly the hose looks fine. No splits or damage. And on my drive today it was 16psi and boost cuts all the way there. Then 12psi and fine all the way home. Until just before home it started boosting more again. My guess is the silicone hose stretches to much and perhaps leaks at the ends?
So I'm probably going to replace this with rubber anyway to be safe.
Just thought I'd ask if anyone has had similar issues?

My old GT4 also would change between 10psi and 14psi depending on its mood. We never got to the bottom of that. I just put a controller in to keep it at 14

I'm not too sure why it would do this.

But, I do have a spare boost T that I am no longer using from my old gen 2 3SGTE. You can have that for free if you want and it might solve the problem? Kept my gen 2 at 14psi constant

[Mr-Paulio]

I'm not too sure why it would do this.

But, I do have a spare boost T that I am no longer using from my old gen 2 3SGTE. You can have that for free if you want and it might solve the problem? Kept my gen 2 at 14psi constant

Cheers mate, but not sure a T is going to help me in this instance. As it makes too much boost.

Anyway, I let the car cool down, found a rubber hose in my trove of spares. And used hose clamps instead of zipties! Quick spin around the block pretty solid 11-12psi everytime. Of course it had been an intermittent problem. But fingers crossed that's sorted! If not, I guess I have to lay off 100% throttle and high revs on next Sunday's club run

[GlanzaAtHeart]

I'm not too sure why it would do this.

But, I do have a spare boost T that I am no longer using from my old gen 2 3SGTE. You can have that for free if you want and it might solve the problem? Kept my gen 2 at 14psi constant

Cheers mate, but not sure a T is going to help me in this instance. As it makes too much boost.

Anyway, I let the car cool down, found a rubber hose in my trove of spares. And used hose clamps instead of zipties! Quick spin around the block pretty solid 11-12psi everytime. Of course it had been an intermittent problem. But fingers crossed that's sorted! If not, I guess I have to lay off 100% throttle and high revs on next Sunday's club run

Ah bugger, thought it might, not too good with vacuum leaks. But if you ever wanna run more boost, it's yours.

Good that you solved it though!

[Mr-Paulio]

Well hopefully!
So will you have your car sorted for the run next Sunday?

[GlanzaAtHeart]

Well hopefully!
So will you have your car sorted for the run next Sunday?

Haha. Might actually to be honest. If I get it back this week, I think I'll be feeling pretty sick on work on that day But I'm just in the process of getting new earths made up, doubt it'll be ready.

Sometimes the waste gate diaphragms go bad don't they. I know Gen 4s have boost creep issues that I'm bound to run in eventually. I think GDII has more knowledge with this. I believe running a boost controller (Even at stock boost) you can bypass one of the TVS lines or something?