(Possibly) Blew a head gasket looking for suggestions

[MattM]

So excited for it to start up and run. I hope everything goes smoothly with the break in miles

 

[arlisscm]

So excited for it to start up and run. I hope everything goes smoothly with the break in miles

Right now, looks like I should have it running tomorrow, then barring any major issues, buttoning everything up and driving on Thursday. If all systems are go, driving around aimlessly as much as possible over the weekend.

 

[arlisscm]

 

[MattM]

It’s cool that you have the sandwich plate with the oil temp. It’ll be interesting to see how close or far off the access port is with its calculated oil temp value. Glad it’s up and running and I hope it’s running well!

 

[arlisscm]

It’s cool that you have the sandwich plate with the oil temp. It’ll be interesting to see how close or far off the access port is with its calculated oil temp value. Glad it’s up and running and I hope it’s running well!

Ran it for 20 minutes or so yesterday to heat it up, bleed the coolant system/oil system, check for leaks and all that. Seemed to be running fine and fired right up without any hesitation.

I'll be starting on the break in miles this afternoon/evening.


From what I was seeing, seems the inferred oil temperature on the AP is ~20 degrees above what I am reading on the gauge in the sandwich plate. Given I have non-stock just about everything, this could be throwing off the assumptions/calculations the ECU uses to interpolate or extrapolate the oil temperature.

 

[Grsemky]

Ran it for 20 minutes or so yesterday to heat it up, bleed the coolant system/oil system, check for leaks and all that. Seemed to be running fine and fired right up without any hesitation.

I'll be starting on the break in miles this afternoon/evening.


From what I was seeing, seems the inferred oil temperature on the AP is ~20 degrees above what I am reading on the gauge in the sandwich plate. Given I have non-stock just about everything, this could be throwing off the assumptions/calculations the ECU uses to interpolate or extrapolate the oil temperature.

What did you use to attach the plate? I know it's 3/4-16 thread but I haven't found how long I need the threads into the block

 

[arlisscm]

What did you use to attach the plate? I know it's 3/4-16 thread but I haven't found how long I need the threads into the block

I ended up piecing them together separately, but I essentially got this. Just needed to trim the male-male stud ~0.5" shorter (on the external side) to get it to work with the mounting depth on the ST (it's sized for a 1JZ/2JZ).

 

[Grsemky]

I ended up piecing them together separately, but I essentially got this. Just needed to trim the male-male stud ~0.5" shorter (on the external side) to get it to work with the mounting depth on the ST (it's sized for a 1JZ/2JZ).

View attachment 69857

Sweet I was going to use an old SBC coupler but was struggling to confirm both sides had the proper pitch.

 

[arlisscm]

Sweet I was going to use an old SBC coupler but was struggling to confirm both sides had the proper pitch.

Yeah, I wasn't 100% sure at first, so I just rolled the dice and can confirm both the block side and filter side are the same 3/4 - 16 thread. So, even a bored out threaded rod or stud could be used if needed.

 

[Grsemky]

Yeah, I wasn't 100% sure at first, so I just rolled the dice and can confirm both the block side and filter side are the same 3/4 - 16 thread. So, even a bored out threaded rod or stud could be used if needed.

Awesome! Thanks for the info

 

[arlisscm]

Took it out for a ~20 mile jaunt around the back roads (of Mexico, because my registration and inspection may or may not be current, will be addressing that tomorrow), varying the rpms as much as possible up to 3,500 per the break in instructions. Popped back into the shop after and threw a fresh piece of cardboard under it while I did a visual inspection up top. No marks on the cardboard after 10 minutes.

Everything felt and sounded good, so I would say all systems are go.

Only issue was keeping the revs below 3,500 I wasn't able to get the oil above 180F, so I'm unsure of the extent to which the sandwich plate thermostat opened. Got close, so with a higher ambient at some point during the break in, I should be able to get there. The temp did drop 5-10 degrees quickly a few times, so perhaps that was the thermostat cracking.

 

[MattM]

Are you running on a base map with the new turbo and motor or did you just load up whatever tune you had finished from the old motor? Just out of curiosity

 

[arlisscm]

Are you running on a base map with the new turbo and motor or did you just load up whatever tune you had finished from the old motor? Just out of curiosity

Same finalized map I was running before. Checked with Jason ahead of time and he said as long as the injectors, map sensors and all that are the same it'll be fine.

Even though the engines built, it's still stock cams and stuff, and I transferred over all the sensors and such from my old engine.

Also, during break in I'm not really leaning on it, so timing corrections and boost are minimal.