'08 BL9 2.5i. '91 BC6 awd and turbo conversion.

[rexhunta]

Literally any inlet tract leak… try a diy smoke machine at a regulated 1-2psi with a bung in the inlet pipe after the airbox?
The throttlebody gasket has never given me grief though, on a GT it’s a whopper orange (nitrile?) oring.

I've got a vape using wrx neighbour, i'll get him over to blow some smoke through it and try it !

2.5i is a standard paper gasket type, thinking about deleting it and filling it with goo.

[rexhunta]

That lasted a good week on the EJ253. Codes back, no vacuum leaks after a smoke test.

Compression Tested.

160
165
70
165


Time to look at choices.
Unrego, make it a autocross car.
Unrego, strip it.
Sell as is
Find a motor.

This point, going to pull the motor and have a look. Chances are grim but I'd say ringlands gone kaput.

[bigBADbenny]

Interested to see if it’s ringlands, a valve or a head gasket.

Does it blow much smoke with the oil cap removed and free revved to 3k rpm?

Cover the engine with a rag/s in case it spits oil out the filler.

[rexhunta]

Interested to see if it’s ringlands, a valve or a head gasket.

Does it blow much smoke with the oil cap removed and free revved to 3k rpm?

Cover the engine with a rag/s in case it spits oil out the filler.

I did not try that, i dropped the headers and had oil on cyl 3 so has to be head or ringland problem. I'll throw the headers back on monday morning and i'll give that a go, that should give me a reading if it's a bottom end problem ? Since i can't do a wet test.

[bigBADbenny]

It’s just a quick n dirty test really, I forgot to mention put a nitrile glove tightly over the filler, generally if it fills up with blowby over 3krpm or at all again it’s rings or heads.

Other tests involve taking valve cover off and use compressed air in a spark plug fitting, to see if the issue is valves or rings…

[rexhunta]

Been a busy week and a bit.

Dropped the motor out, took the head off, cyl 3 itself looked fine, no problems with the bore or top of the pistons etc.

Rolled the head over, set the exhaust valves shut, poured fuel down the ports.... and it came straight out. Tried Cyl 1s exhaust ports, all held. Bingo.

Dropped the head down the local machinists. Few days later, phone call, replaced 1 valve, reseated the rest on both cylinders.

Got it home, ordered another head gasket, studs, few bits and pieces. Had it all sitting there ready for this weekend.

This morning got up pretty early to beat the heat, ran a sharpening stone over the blocks surface, cleaned up all the surfaces. Got out the old arp torque pro paste and got to work. fitted the head to suit, got all the belts back on, reset the valve clearances, then as a quick test, got the breaker bar on the crank and compression tester on cyl 3, gave it a couple of spins, got 100 psi. Happy.

Bolted rest together, dropped the car down, got it to a point where i could hit the starter and check properly. 165psi on cyl 3. Perfect.

Rest of the car together, put it through a heat cycle while bleeding the coolant, all the bubbles settled, car idled perfectly, no roughness monitors, IAM was at .500, then after a restart went to 1.00. Awesome.

So couple of test drives, car runs nice. It's idling flat again, sounds all quiet. Tomorrow will throw it backup and do another nuts and bolts check, don't go back to work til wednesday so will throw a few kms on it around town.

Pete.

[Yowie]

Great stuff. The project almost looked like it had a serious setback for a minute there.

[RX25SE]

Nice work!

Dropped the head down the local machinists. Few days later, phone call, replaced 1 valve, reseated the rest on both cylinders.

Did they mention if the valve was bent or burnt?

[rexhunta]

Nice work!

Dropped the head down the local machinists. Few days later, phone call, replaced 1 valve, reseated the rest on both cylinders.

Did they mention if the valve was bent or burnt?

on Cyl 3 1 exhaust valve burnt beyond being able to be machined, 2nd valve was savable. Cyl 1 they just reseated both.

[rexhunta]

Great stuff. The project almost looked like it had a serious setback for a minute there.

Being just a work hack now, i didn't mind what direction it went, but i'm glad It was repairable, it's actually a decent car to drive, it's 25 mins highway driving to the refinery from my house so the climate control and cruise control make it a good drive. I've got a half decent stereo in it so it's a nice drive.

[rexhunta]

Yesterday put about 100kms on the car running into town a few times.

This morning gave it all a quick once over, no coolant or oil loss/mix, threw the laptop on, all good.



Pete.

[rexhunta]

Onto some slightly better BC news.





and decided to paint the cooler black to hide it a bit more. Don't mind the dust and sticky residue on the bumpers, I haven't cleaned it properly yet.



Car hasn't been buffed or anything yet, Painted last friday and got the front end on and that's about it. Hopefully Mond/Tues I'll get a few more trims and some of the interior back together. Roofliner goes into the upholsterer soon to be recovered, then I'll get the majority back in, whilst cleaning the suede trims and shit as I go.