Cracked exhaust housing
Turbo Mini Forums

Just stripped a .49AR T25 from a 200sx, and found the exhaust housing is cracked in 5 places under the wastegate. Just wondering how badly it will affect the turbos performance, and if theres is anyway to find a replacement housing (has .64 on exhaust housing)

My T3 has cracks in places, i dont think you need to worry about them.

1/4 Mile 14.3secs 96Mph Terminal 10psi of boost.


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its pretty common on them dude, although that bottom one does look like a pretty big crack (*waits for nic)

i'd stick it on and see if its ok, if not then its not a major amount of work to swap it back out.

Yeah pretty typical for this style of turbo. If bad enough they can affect maximum boost possible, it's kin of suck it and see.

Your main problem will be getting this turbo to spool at all. The 0.64 turbine is too big, even for a 1380.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

Yep - a T25 with the 0.64 will spool up - but VERY slowly... The 0.49 is better, but still not 100% ideal.

I think i have a 0.49 (or is it 0.48) if you're interested - I'm a little far away though. Thjat said, postage is probably similar to UK postage for somet like this.

Edited by turbodave16v on 15th May, 2008.

i had a .63(i think) on mine when i first swapped from a T3, it wasn't actually too bad. spooled up a lot quicker than the T3.

I think the one i've got now is a .35 which was great for daily driving but it really drops off at the top end and won't give me any more than 15psi. Going to have to source something better matched when i get it running again as i wan't more power/boost.

Edited by Nick on 15th May, 2008.

I may have to highjack this thread for a bit as I was pondering options for Mirage manifolds. As Nick has said the R5 is a bit small for decent boost levels, OK there is the option of a Tomcat T25 but is there any other T2 options? I have a Turbo technics stage 1 R5 turbo but it is standard in the AR department. Mirage do a modded R5 T2 but again from what I can tell it is a .35AR with .48 exhaust (albeit the compressor is reprofiled). Can you get a T2 that comes with bigger than .35AR as standard? Sorry for highjack!

*edit* im a wally, post deleted

Edited by joeybaby83 on 15th May, 2008.

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

Is it a .47AR jobbie? I think I have read of such on the forum but don't know what its from. I will have to hunt around... Hmmm...

i have a t25 sat infront of me with a 0.48AR and am not going to be using it.

£40 and its gone. might be worth rebuilding it though as i dont know the true condition of it.

Heeeeey, now that sounds tempting. I was trying to stick with the T2 as theres less messing about to get everything fitted but... hmmm... Is it water cooled?

indeed it is.

Sorry I've really dragged this thread off in another direction haven't I?

Can you give the shaft a wiggle? What sort of play does it have?

oh dear........... thats so wrong when i am tryin to sell you a turbo! please lets get back on track

i would say roughly 1-2mm could do with a rebuild like i said. they were my plans for it untill i got a gt20 off the bay which turned out to be a t20 which actually i will go and check now because that might be right what you looking for.!!!

right its a t2052 and the shaft has max 1mm play. it is again .48AR. unfortunately its got a 3 stud manifold bolt pattern!! freaking landrover!

Oh, no probs, thanks for trying anyway! Now where were we...

its here if you want it mate. not going anywhere fast, its up to you.

back on topic, i'm fairly sure you can get a 0.41 a/r for the t25 turbine from an early renault 19 td. but i have yet to find one as they were only fitted for a year afaik and so don't come up second hand very often. i could dig out the part number if anyones interested?

Anyone any experience running the .64 exhaust housing then? and when it will spool if some say its too big. Also anyone know which cars came with the T25 with the smaller .49 exhaust so i can try find one,
Thanks

Fastest 998 mini in the world? 13.05 1/4 mile 106mph