Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[Rocketman]

rings?

[Gus Kelley]

Hey XR2! Rocketman commented "rings". If he is directing that at smoke on your decel then check valve guide seals first.Have your head rebuilt before attacking the block.  Gus.

[1992xr2]

  so there's no chance it could be something turbo related?  It's pretty much an internal oil leak?
I'm not using any oil, I might be using coolant.  Could this be an internal coolant leak in the turbo?

[1992xr2]

I'm burning coolant, if it's on decel could it be anything other than a headgasket or a turbo seal?

[Rocketman]

Did you port the wastegate before you put the turbo on?

Coolant isnt really going to come from the turbo. What is your compression like?

[1992xr2]

It was sort of ported, then it started to crack so we stopped.  I haven't the slightest idea what compression is like, still pulls like a mofo though.  I want to check my vacuum tonight maybe that will show something.  I popped my lower coolant hose in the garage after work today :rollseyes: so I need to put that back on, I'm going to disconnect coolant from the turbo and see if I still have smoke as I'm replacing the coolant, if not I'll start researching headgasket replacement.  I'm seriously considering just sourcing a replacement short block and head with a new valve job and new HLAs and just swapping the whole bloody thing over with all of the new accesories that I got during my reseal job.  Also, I'm taking it back to the faggot who fixed it tomorrow to figure out my oil pressure problems.

[Rocketman]

stock oil gauge?

[1992xr2]

yeah, it's completely normal (compared to previous reading from the same stock gauge) except at low hot idle when it flat lines but goes abck to normal when I rev it lightly.  I also have mad oil and/or coolant and/or fuel smoke when engine braking from 3500-3000 after a hard run through the boost, it is not cooalnt leaking through the turbo, it still does it with no coolant lines to the turbo.  I have an appointment with my ex-mechanic tomorrow to fix it possibly.

[1992xr2]

I thought I'd add that my oil pressure problem is now fixed, I have coolant coming out of my exhaust and coolant lines are a PITA to change with the turbo in the car and the car full of coolant.

[Gus Kelley]

Hey XR2! Check your spark plugs for moisture. you can also do a block check, it's a tester that goes in place of the radiator cap and tests for combustion gases entering yhe cooling system. most likely a blown head gasket between 2-3 cylinders. I have had to change head gaskets on three of my cars so far,all were blown between the middle cylinders.check cnsautoparts.com for better pricing on gasket sets.  good luck Gus.

[1992xr2]

Will 1.6 Miata gaskets and ARP studs fit?

[pmpsht]

YEs!  I got my ARP studs and gaskets at flyinmiata.com, good and smart guys over there.  They are one of my sponsors for the meet.

[Gus Kelley]

Hey XR2! Yes on miata but has to be 1.6 not 1.8 and a definite eeh haw on the studs. You're able to torque them down a couple extra lbs. That is needed for hi boost levels. Good time to do the valves and check head for straightness. I believe it can't be more than 4 or 6 thousands out. Your machinist should have the specs.  Good Luck  Gus.

[pmpsht]

Gus, your payment was received yesterday, thanks and your kit will be on it's way.

The 1.6 motor of course.  And yea, Gus is right, make sure you do all your head work while you are going to the rest of that trouble.  I did all the head work during my build.  It can me a lot more money down the road if you don't.

[1992xr2]

Now I'm not sure that it is the headgasket.  The turbo is not blowing oil and none of the spark plugs are wet or show any evidence of having been exposed to oil.  Could a turbo with no shaft play be blowing oil out only the exhaust side of the turbo?  I want to go buy that tester for the coolant along with a compression tester on Mon with my tip money.  This is an amazingly frustrating problem, thanks for all of the help guys!