RX Turbo, Turbo Cracked

BRUMBI · Post by **BRUMBI** » Sat Sep 06, 2008 4:19 pm

so last week my car starts to turn into a steam cleaner. it started blowing huge amounts of steam out the exhaust and smelt really sweet(like sugar/coolant), then my car started to over heat and when it over heated the steam stop coming out. i thought i might of had a blown head/gasket but the car ran fine and there was no water in the oil hmmm, then a mate of mine thats a mechanic said he saw a car come into his work shop that had a water cooled turbo and was leaking water into the exhaust side of the turbo. so i ripped my turbo off today to find this

two big cracks under the waste gate, not good im guessing. Dose anyone have any ideas what i should do i know u pull it at lonsdale have one

and just a pic of the engine when i was taking it out do you like the blue (everything is painted blue engine, gearbox, rockercovers, inletmanifold, WAIC)

Gannon · Post by **Gannon** » Sat Sep 06, 2008 6:19 pm

I have a turbo with a jammed shaft. Anygood to you?

Either that or upgrade to a TF035 or TD04

discopotato03 · Post by **discopotato03** » Sat Sep 06, 2008 6:43 pm

Hi Brumbi , those cracks in that turbine housing are usually a sign that the housing has been used in an overly high exhaust gas temp environment .
It's common to find them in turbos that have had a boost increase which also means a thermal load increase .

You won't get water leaking through a cracked turbine housing because the water jacket is in the center section or bearig housing not the turbine housing .
Since you have the turbo off you need to gut it or get a turbocharger service mob to check it over .
I believe new cartridges are available but is it really worth fixing a small dinosaur tech turbo ?
I lost faith in the things when I discovered how small the turbine housing is (12R I think) and the only alternative (15R) one from I think the dirty emissions countries that didn't run cats in the 80's/EA82T - is impossible to find .

If you have control of fuel and timing I'd toss it for a Rex spec TD04 , they are reasonably small - even for an EJ20 so possibly about right for a mild EA82T . If you do some internal engine work and build a header that works then I reckon a hybrid TD04HL but not on a std EA82 .

A .

steptoe · Post by **steptoe** » Sun Sep 07, 2008 10:56 am

that is a bummer, I wonder if one of the wonder sealers available would have any effetc on a 'repair' ?

While on EA82 Turbos, if you have a spare available after BRUMBI is sorted leeroy in here will be needing a fix for his smokey old EA82T in his Brumby when he gets back in here in a months time

chubby37 · Post by **chubby37** » Sun Sep 07, 2008 11:22 am

i could be way off here but i heard a VF12 was a really good upgrade for the EA82t?????i know almost nothing about turbos

discopotato03 · Post by **discopotato03** » Sun Sep 07, 2008 2:48 pm

A VF12 is the same IHI RHB52 family as the EA82's VF2/VF4 but rebuild kits and spares are no longer made for them which means you'd have to survive on 2nd hand ones of unknown history .
Early VF series turbos are a generation behind the 90's + IHI and Mitsubishi turbos so aero tech wise their wheels are outdated designs .

There is a wide variation in compressors and two useful turbines in Mitsubishi's TD04 range , and they're bush/thrust plate bearing center sections so cheaper than ball bearing turbos to play with .
As I said second hand Rex TD04L's are cheap and plentiful because every Rex head wants to flick them for "sick mate" turbos , their percieved value is low (~ 250) so provided you get a serviceable one it's great value .

If you want a good std reliable EA/T one I suggest you buy a new cartridge and search for a good 2nd hand turbine housing .
I would not screw the boost up on a std turbo because the exhaust housings are too small to handle the extra volume and heat that a boosted engine puts out .
It's easy to think that you can do this to a std turbo engine but it also infers that FHI's engineers were conservative to the point of stupidity and designed capacity into the std engine and turbo that are just not there .
This is pre historic mid 80's era engineering we are dealing with here and a hell of a lot of development went into engines and turbos chiefly in Formula 1 and Rally circles throughout the 80's . It didn't really filter down to production cars until the very end of the 80's and into the 90's .

Cheers A .