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  #1  
Old 16th March 2009
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BlackKnight95 BlackKnight95 is offline
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Default B235E & B235L what's the difference ?

Hi,
Can anyone share the difference between the B235E and the B235L
engines ?

I know the B235E comes with a lpt and the B235R is the Aero with
the TD04 turbo.

BUT what is in the B235L ???

Have read in the forum that all you got to do to transform a 2.3lpt
to Aero specs is 1. Get the TD04, 2. Get the Aero ECU and you've
gat yourself an Aero, minus the cosmectics of cos.

You could do that with both the B235E and B235L ?

Thanks.
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  #2  
Old 16th March 2009
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walmark walmark is offline
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From what I know, B235L is physically exactly the same as B235R. The only difference is that it has "de-tuned" ECU to produce 220hp. The only thing it needs to achieve 250hp is a ECU tune. B235E would also need TD04.

Quote:
1. Get the TD04, 2. Get the Aero ECU and you've
gat yourself an Aero, minus the cosmectics of cos.
Almost. For all intents and purposes you are right. However, it is my understanding that B235R engines also differ slightly from B235E in piston and valve hardening and coating.

From the press release of MY2000
"The power output of the Saab 9-5 Aero's engine is primarily attributable to the large, variable boost pressure turbocharger, which produces a maximum boost pressure of 1.4 bar, or 20 psi. This allows the 9-5 Aero to maintain maximum power and torque through nearly all driving conditions - including altitudes approaching 10,000 feet. Saab engineers have designed the engine to withstand the additional stress and heat generated from such high boost levels. Like all Saab turbochargers since 1988, the Aero's turbo is both oil and water cooled. In addition, the engine features reinforced alloy pistons that benefit from oil cooling jets at the base of the block that spray oil at the underside of each piston. The engine also features sturdier connecting rods, nitrided gudgeon pins and strengthened intake valves. To handle the heat, exhaust valves are made of Nimonic alloy - a high nickel content, heat-resistant alloy used in aircraft components subjected to high pressure and temperature, such as the exhaust nozzles in jet engines."
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  #3  
Old 16th March 2009
D.M D.M is offline
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what i heared about engine is that rods slightly stronger on the short end different pistoons, and head valves on exhaust side is from different material niomic or somthing that handels more heat. red injectors on both models
note this is pre 2000 models r
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  #4  
Old 16th March 2009
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Quote:
Originally Posted by D.M
what i heared about engine is that rods slightly stronger on the short end different pistoons, and head valves on exhaust side is from different material niomic or somthing that handels more heat. red injectors on both models
note this is pre 2000 models r
I think the rods are all the same. Even if they aren't, they're still way sturdier than the pistons. And you're right that after 00 or 01, the niomic exhaust valves are standard.

Really, the only difference between a B235L and B235R is the software.
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  #5  
Old 17th March 2009
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Quote:
Originally Posted by walmark
exhaust valves are made of Nimonic alloy - a high nickel content, heat-resistant alloy used in aircraft components subjected to high pressure and temperature, such as the exhaust nozzles in jet engines."
Puh-leeeze
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  #6  
Old 17th March 2009
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Quote:
Originally Posted by Tailspin
Puh-leeeze
Marketeers eh???

Anyway most all the internal part numbers are the same, there have been many many many many many discussions on here about internal engine differences, but when you get to the EPC there are:

exhaust valve
the head itself (but that might be due to the differing exhaust valving)

All the bottom end are the same, it would be interesting to see what the head and valve differences are

There are a few external differences in early lpt to Aero manifold and sump but these seem like service elements not related to performance but if anyone wants to chime in do....
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  #7  
Old 17th March 2009
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Quote:
Originally Posted by walmark
From what I know, B235L is physically exactly the same as B235R. The only difference is that it has "de-tuned" ECU to produce 220hp. The only thing it needs to achieve 250hp is a ECU tune. B235E would also need TD04."
I thought the B235L found in the 2.3T is running with the little GT17 lpt.

Have nothing to back this up, but was also wondering if the suffixes "E" and "L" has got to do with GM having a hand in the making of Saabs after 2004 / 2005, like using different materials and different contractors for the manufacture of engine internals.

I know the plastics/cosmetic bits in my 2005 car is not as good/nice to the touch, as those in my 2003 one. They even saved on the printing of the fuse legend on the fuse cover. So wouldn't surprise me if different, or rather cheaper or maybe greener materials are used in the engine bay as well.

Quote:
Originally Posted by Raven18940
"Really, the only difference between a B235L and B235R is the software.."
And the B235E as well ???

And thanks guys for trying to answer my question.
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  #8  
Old 19th March 2009
paolo paolo is offline
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And the B235E as well ???

And thanks guys for trying to answer my question.[/QUOTE]

No ,the B235E has a GT17 turbo with software to match. Both the L and the R have the larger TD04 turbo.

The L was 'developed' to fill the gap left by the old 3.0 lump.
P
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  #9  
Old 20th March 2009
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Ok guys, thanks for the replies.


Another question is are the auto boxes in the B235R Aero and the
B235E and B235L the same ???

I was told that they are not and we are talking same model year.

Thanks.
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  #10  
Old 26th April 2010
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No answer till now ... means they are the same .... right?
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  #11  
Old 26th April 2010
Jssaab Jssaab is offline
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Quote:
Originally Posted by m112a View Post
No answer till now ... means they are the same .... right?
Yes mechanically but there may be differences on the tune side in the software
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