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I've just done a search and have come across a few of my posts a couple of years old where I asked this type of question before but have had 'not one reply'!I know most people deal with 900T so there are millions of responses out there....but I find it hard to believe nobody knows a good hybrid turbo for a 1992 2.3 T Carlsson.
This is a copy of emails I've sent all over the world to try and get the necessary info before I buy one.
I'm trying to source a performance hybrid turbo for my 2.3T Saab. It has a Garrett T25 (CHRA 443854-55 TE1818F) as standard and did produce 220hp at 1.0bar boost pressure. I have additional items on the engine now and need a turbo which will spool up fast but also be able to supply up to 2.0 bar boost when required without running out of steam.
I've been in touch with 4 turbo specialists in the UK and have got 4 different specs on what I should buy! I'm confused!!
This is what I posted on a performance website....
I'm in the process of trying to get a ball bearing hybrid for my 2.3 Carlsson. One specialist says I need a GT 28 Series good for 320-360hp another says I need a T25-T28 with a .64 exh housing and a .42 or .6 or go to a 0.8 T250 compressor housing, another says I need a T28 with a .64 housing as fitted to 4x4 Cosworths.
Another US company told me this....
Looks like I have one more recommendation to confuse you with :-)
I would actually suggest a smaller T3/T4 hybrid. The reason being is twofold, one - even our largest T3 will only support about 325 HP at the flywheel which is a far cry from your 350+ goal. Two - I can't see a T2/28 series turbo producing that much HP. I haven't seen one yet.
As far as the exact turbo, I would suggest the T3/T4E hybrid with Super E50 compressor wheel & Stage II turbine wheel with a .63 A/R turbine housing ( T3 Flange ).
I'm running a gas flowed head, 3" JT exhaust, no cat, Aquamist running 50% methanol, modded airbox with JT filter, mbc plus minor other mods on this engine and am running about 1.6 bar but this might go up to 2.0 bar as I have a race engine built awaiting fitting thus want a turbo which will be able to supply 350+hp reliably.
Preferably the turbo will be a straight swap, but small mods to oil feed and return and waterpipes can be accepted.
Can you supply me with something suitable with what spec and at what cost.
Can anyone here give me some guidance and what I should have built and any contacts that can be recommended.
Thanks in advance,
Mark
posted by 57.66.42...
, Sun, 29 Feb 2004 14:31:53
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