Roman's 4GR V6 Carina discussion thread

[lowlancer]

Engine sounds hektik man.

One thing I learned in the last couple years is to just let yourself off the hook (aka forgive yourself but that sounds pretty lame) and restart the counter on whatever you're focusing on. Takes a weight off your shoulders and lets you spend the time to do things right.

[yoeddynz]

I hope kitty is doing OK now. 

Engine sounds mean. Take your time and just enjoy the process. There will be other drag days. 

[Rhyscar]

Great effort getting this far man I'm super impressed at the progress in such a short time. Sucks about the license and logbook situation but there is always another event to go doorting at!

 

 

[Sungai Sungai]

9 hours ago, Rhyscar said:

Sucks about the license and logbook situation but there is always do a burnout outside your house!

 

 

 

[shrike]

1 hour ago, Sungai Sungai said:

 

New shed skids

[h4nd]

Cough

  titanium crank

  Cough cough

[Hemi]

Motor sounds Boss as Mr Roman. Can't wait to hear it nnnnNNNNNNEEEEOOooooow 

[xsspeed]

8k rpm, check

...

[h4nd]

[fuzzy-hair-man]

I had a similar issue with oil pressure sensors reading low (below zero at times) what I think happened was the oil pressure relief valve stuck closed(probably common I think) and the electric pressure sensor saw too much pressure, after which it seemed to read 20 psi or so low. Mechanical guage seems much more reliable. Took quite some nervous moments to sort it out...

PS: mine were Smiths / Caerbont guages so probably as reliable as lucas electrics...

[fuel]

Hopefully that valve guide is OK and not tweaked also. Might be worthwhile grabbing a spare pair of heads while they're still cheap and plentiful in case this is a recurring theme. Am kinda regretting not hanging onto a pair of heads from the $100 donor GTO engine I torn down years ago for my current GTO that bent all the valves. I got lucky that it was just bent valves and a few damaged rocker arms, but if I had to start replacing springs, valve guides and seats etc it starts to become uneconomical to repair and just better off with replacement heads. Hopefully head gaskets are cheap and easy to come by for these engines?

[shrike]

 

[Roman]

5 hours ago, fuel said:

Hopefully that valve guide is OK and not tweaked also. Might be worthwhile grabbing a spare pair of heads while they're still cheap and plentiful in case this is a recurring theme. Am kinda regretting not hanging onto a pair of heads from the $100 donor GTO engine I torn down years ago for my current GTO that bent all the valves. I got lucky that it was just bent valves and a few damaged rocker arms, but if I had to start replacing springs, valve guides and seats etc it starts to become uneconomical to repair and just better off with replacement heads. Hopefully head gaskets are cheap and easy to come by for these engines?

Yeah, they are cheap and common at the moment, and still reasonably low km. 
So its definitely the intention to buy and wrap up a few whole motors while they're still nicely priced. 
However they are made right up to 2019 so I'm not anticipating any shortages too soon.

Shrike - Those two guys above havent actually done it yet. 
Frankenstein motorworks will get here. 
Other guy, I wouldnt bet on it.

I cleaned up the busted rocker and had a test to see if it will tig okay. 
Looks like it will be sweet as they are same material. 
So one side the pin was high, the other sunken in, and they both tigged up fine.
Will just make sure everything is super clean, tungsten is super sharp, and will test on my busted one before piping anything down on a part I'm going to reuse. 

So all that I have to now, is take the sump off, so I can get the front timing cover off, so I can get the cams out 
 

[shrike]

1 hour ago, Roman said:

Yeah, they are cheap and common at the moment, and still reasonably low km. 
So its definitely the intention to buy and wrap up a few whole motors while they're still nicely priced. 
However they are made right up to 2019 so I'm not anticipating any shortages too soon.

Shrike - Those two guys above havent actually done it yet. 
Frankenstein motorworks will get here. 
Other guy, I wouldnt bet on it.

I cleaned up the busted rocker and had a test to see if it will tig okay. 
Looks like it will be sweet as they are same material. 
So one side the pin was high, the other sunken in, and they both tigged up fine.
Will just make sure everything is super clean, tungsten is super sharp, and will test on my busted one before piping anything down on a part I'm going to reuse. 

So all that I have to now, is take the sump off, so I can get the front timing cover off, so I can get the cams out 
 

Ahh I thought they had completed it, bugger was hoping it would give a good blueprint

Clearly you need to sort yours to 10k+ rpm and show them how its done haha

[fletch]

I would expect you could get away with the stock rockers vs the cnc ones as you have lighter valves.

Once you can get the pin to stay in place..

[Roman]

Yeah looks like a little tig blob and will be fine. 

Time consuming, but cheap and easy fix for everything that has happened. 

I will see if I can get a head off while the engine stays in the car. 

I might look at modding the front cover so I can remove it without taking the sump off, as its a major pain. 

Especially since I'm probably going to need to do it 10x more 

[Roman]

I posted up the failure on a 2GR group on Facebook, and someone had this to say:



So hopefully that's the end of that issue at least.

[Nominal]

Just as soon as you can get hold of a tach welder

 

[Roman]

Weld that tach to the 10k rpm mark! haha

[HumberSS]

Just run less oil in it it will weld itself.  Loving the commitment here