Dumb question but...

I found a b235r motor 2,3 areo from 2002 is it worth it putting it in my mk1 9-3 from 1998?

2 Upvotes

100% Upvoted

u/OB1182 2003 9-5 Aero Estate 10h ago

Yes.

^{This is not financial advise.}

1

u/chrisdaewe 10h ago

It was born as a 2,0t

2

u/vilius_m_lt 10h ago

You will need to reprogram your ECU with a B235 calibration but yeah, I’ve done it back in the day. It’s the same block except for crank and connecting rods

2

u/amazinjoey 2005 SAAB 9-5 2.0T Biopower Sedan (310hp) 6h ago

He needs new wiring for engine harness AND Interior. Both for Miu and sid

0

u/vilius_m_lt 5h ago

No he doesn’t

0

u/amazinjoey 2005 SAAB 9-5 2.0T Biopower Sedan (310hp) 5h ago

Yes he does, It communicates via P bus which is missing on the 98 9-3. Same for the SID...

98 9-3 uses trionic 5

9-5 and the b235 uses trionic 7

-1

u/vilius_m_lt 5h ago

Nope. He’s just changing the motor, not entire system. T5 is capable of running b235 motor. MIU and SID has absolutely nothing to do with it

2

u/amazinjoey 2005 SAAB 9-5 2.0T Biopower Sedan (310hp) 5h ago

No it's, it has A COMPLETLY DIFFERENT Manifold, throttle body as b2x4 has a mechanical one, sensor etc.

Yes it does because you CANT put B235 calibration on a T5. Those calibration are for T7 and won't flash over. And he can't T7 convert as need completly different electrionics

-1

u/vilius_m_lt 5h ago

A t5 2.3 calibration will work fine with a b235 block. T5 is way easier to make changes to with t5 suite too, so that’s really not an issue. Yes, manifold is different, I would probably swap the head, since t5 cams are better anyway, if I was in his position. Then again I wouldn’t ask these questions before doing that anyway.. there is plenty of info available as it is, I had no issues doing any of my swaps - auto to manual, 2.0 to 2.3, etc

1

u/tsg-tsg 1m ago

A T5 head on a T7 block is the worst of all worlds. Make no sense. Far better/easier ways to turn a 2.0l T5 into a 2.3l T5 than this. Is it possible? Sure. Good idea? No.