UpdateRecently (as in my other threads) my engine overheated, after this I did an overhaul of the cooling system including system flush and heater core flush, replacement of t-stat and rad cap with TRD items and replacement of burst upper hose with blue silicone rad hose set.
After bleeding (or burping) the system at operating temperature (which is now lower due to the TRD t-stat but fluctuates between the new lower temp and the normal temp) I took the car for a hard drive, everything seemed to go fine but soon after the engine started smoking
as seen here.
Well after scratching my head and scratching my balls for weeks I decided to drop it into my engineer's shop.
Compression test came up 180,170,170,180 which isn't great, but atleast consistent and tends to rule out the 1 popped water jacket in 1 cylender theory
And a hydrocarbon test in the radiator came up negative so that tends to back up the compression test evidence, so now we conclude (at a guess still) that I have leaking turbo seals.
As this is the 2nd CT to have failed on me, we have decided to go a drastically different route,
The planOld ------------> NewCT26 hybrid turbo -> Garrett GT2871RS with the 0.64a/r rear housing
Gen 3 manifold -> New Custom steampipe 3S-GTE - T28 manifold with 44mm V-Band port
Custom 3" DP -> New custom 3" T28 downpipe with 44mm return port
Factory IC will be retained, an icebox will later be plumbed into the system for racing.
Braided teflon oil and coolant hose lines will be made.
Battery will be moved to the boot.
A custom intake and cold air box will be made up.
The choice of turbo was made after much discussion and debate here is what we concluded the GT2860RS Disco Potato would be a downgrade to the CT20b, the 2876RS with it's 4" intake would spool up way too late for my needs so that leaves us with 2871 in the middle ground.
We have decided to add either 38mm or 44mm (I think 44mm will be best) external wastegate ports with blockoff plates for now and just see how the internal gate plays ball, as we can always add a Tial later on and tack up the internal.
Also considering ditching the SSQV bov for a Greddy Type RS plumb back.
This post has been edited by delusionz: Apr 12, 2011 - 3:20 AM