Roman's 4GR V6 Carina discussion thread

[Roman]

Nah, I think I punished him enough with non 4AGE related work already. 

Apparently he stays up late at night washing his hands, still trying to get the stink of 1NZ off them...

For now it'll just be the factory manifolds and then try do the rest of the exhaust nicely-ish to suit end goals. Then flanges to suit putting some nicer manifolds on as things progress.

[shrike]

13 minutes ago, Roman said:

Nah, I think I punished him enough with non 4AGE related work already. 

Apparently he stays up late at night washing his hands, still trying to get the stink of 1NZ off them...

For now it'll just be the factory manifolds and then try do the rest of the exhaust nicely-ish to suit end goals. Then flanges to suit putting some nicer manifolds on as things progress.

What was the 4age successor? (According to Wiki it was the 3zz, then 1ZR) so guess 1NZ isn't close enough haha

Thinking Single or dual exhaust? 

Thoughts on sizing, 3" is always the answer if single right?

[Roman]

Yeah will probably merge into a single 3" pipe to back of the car.

Probably better to go even bigger, or have separate pipes for each bank all the way to back of the car. 
But it sounds better if you merge them.

Also it gets a lot harder trying to have some decent mufflers under the car once the pipes start getting bigger.
 

[yoeddynz]

Like I commented on the grams of insta - fit a ramflo filter and you're sorted. 

Congrats Dave. Looking forward to hearing this scream! 

[shrike]

25 minutes ago, Roman said:

Yeah will probably merge into a single 3" pipe to back of the car.

Probably better to go even bigger, or have separate pipes for each bank all the way to back of the car. 
But it sounds better if you merge them.

Also it gets a lot harder trying to have some decent mufflers under the car once the pipes start getting bigger.
 

No space for 3.5" then, considered Oval exhaust :p

Keen to see what you come up with :0

[dabuzz]

Massive mate! 

So good getting that first start up! 

[yetchh]

On 11/04/2024 at 22:03, Roman said:

 

 

 

shit that looks good with the v6 in there...

 

 

[HumberSS]

Just slap a pipe out each side in front of the back wheels and call it done....quick and dirty. We need to see skids.

Well done mate

[BlownCorona]

are you sure that a pull up resistor is correct for your sensor? it may be wanting a pull down. 

5v when hall is OFF

5v when hall is ON

[Roman]

Yeah, pullup according to documentation.

[kpr]

Have you tired changing the edge they trigger on? 

Does the toyota setup use a 5v supply?       The cherry/zf sensors say they will run off 5v, but they case the odd trigger errot on link, when run on 5v?
Are the sensors for the vvti?    its not seeing them in the f12 menu?

 

[Roman]

Yeah so the trigger code for the 2gr lets it run as wasted spark / batch fire until it gets a cam trigger signal.

So originally i had timing 360 deg out, then it would work as wasted spark but then cut out when it found trigger 2. Ha.

Yeah so there are 4x cam angle sensors for vvti, one gets connected as trigger 2 then the other 3 to DIs.

According to some old posts on the link forum the trigger decoding only works if set to falling edge. As otherwise the timing of crank vs cam overlaps in a weird way for vvti range. 

Will do some checks with a multimeter tomorrow.

 

 

[Roman]

I ended up pulling the whole loom out to check things on the bench.
It took a few hours to figure things out, I had made a few mistakes.

Since I have pullup resistors on all of the cam angle sensors, the 5v supply on that loom plug splits 4 ways and joins to the signals. 
However I'd swapped the 5v supply wire with one of the 5v/DI signals on one half of the plug. So looking with a multimeter it still showed the correct amount of resistance on that DI, but, it was the wrong way around.
Then I also found a broken wire at the plug end of one of the other DIs.

Then I also found one of the pins in one of the plug halves was pushing back out when you put the plug together. So replaced the plug.
I've got all of them responding on/off when holding steel against the sensors.

While I was there I also changed the supply to 8v instead, hopefully less chance of trigger errors.
Hopefully it'll all work okay now.

 

[fuel]

Does Toyota have a tool to insert rockers without removing the cams? For the older Mitsus with rocker arms there is a tool you use to slip them in without having to remove the cams

[shrike]

That sucks, fingers crossed for you that its an easy fix

What was the history of this motor?

[Roman]

Bought from Dodsons, assumed running engine.

I doubt its any historical issue that caused it.

Maybe just lots of cranking with low oil pressure, so the pulley slaps around like crazy if the chambers havent filled with oil...

But that would only be an issue if the locking pin wasnt working, which is a common issue on these apparently.

So will give them all a good check. 

Then price up some new pulleys if needed.

I dont mind blowing this motor up, but i was more hoping for a blaze of glory spreading its guts down the 2nd half of meremere

[shrike]

4 minutes ago, Roman said:

Bought from Dodsons, assumed running engine.

I doubt its any historical issue that caused it.

Maybe just lots of cranking with low oil pressure, so the pulley slaps around like crazy if the chambers havent filled with oil...

But that would only be an issue if the locking pin wasnt working, which is a common issue on these apparently.

So will give them all a good check. 

Then price up some new pulleys if needed.

I dont mind blowing this motor up, but i was more hoping for a blaze of glory spreading its guts down the 2nd half of meremere

Just wondering if it had the locking pin issue and someone didn't do the bolts back up properly before you got it

[Roman]

Just asked some 2GR guys, they said they have seen the bolts back themselves out on 2009 or earlier motors, if the locking pin wasnt engaging. As it slaps around like crazy before oil pressure can build.

So way stiffer valve springs and yep.

Sounds like there have been a few iterations of pulleys, so might just suck it up and buy some new ones.

So not completely my fault this time by the looks...

[shrike]

3 minutes ago, Roman said:

Just asked some 2GR guys, they said they have seen the bolts back themselves out on 2009 or earlier motors, if the locking pin wasnt engaging. As it slaps around like crazy before oil pressure can build.

So way stiffer valve springs and yep.

Sounds like there have been a few iterations of pulleys, so might just suck it up and buy some new ones.

So not completely my fault this time by the looks...

Updated gears and some locktight?

[Raizer]

I think something is trying to tell you that you need to build an angry 3 cylinder engine at some point.
Echo lost a piston, V6 tried to make itself a triple etc