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Discussion Starter · #1 ·
Hello, can anyone tell me how to remove the haetshield on a 9000 Aero and how does it help power gains?

I have searched the forums and other sites and can't seem to find it.

Any help is much appreciated.

Cheers
 

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I think you mean the heater plate? It's sandwiched between the cylinder head and the inlet manifold.

Check you have one before you try to remove it Not all cars had one.
 

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Paul, I think what you're referring to is the heater plate that was fitted between the intake manifold and cylinder head on later models. It's an electrical heater that is used to warm the fuel on cold starts to help reduce emissions etc.

It's fairly restrictive and by removing it you can gain a few more hp.

There's info on it in the threads below:

http://www.saabscene.co.uk/ubb/ultimatebb....026.html#000001

http://www.saabscene.co.uk/ubb/ultimatebb....832.html#000007

http://www.saabscene.co.uk/ubb/ultimatebb....317.html#000000

And plenty more discussion if you do a search on "heat plate"
 

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As far as I can tell, it was fitted from engine number ending -T007132 to engine number ending -V058528. This spans some 1996 and 1997 cars.

It was only fitted to turbocharged engines. I have heard it was only the B234R (manual Aero) engines, but the parts catalogue does not mention this.

From a rough measurement, I worked out it covered approximately 25-30% of the inlet port area. The boost pressure on cars equipped with the heatplate was increased at high RPM to maintain the same power output as the non-heatplate engines so the effect of removing the plate should be the same as that of fitting a mildly-tuned ECU. I worked out once that it should bring the Aero's 225hp up to around 240hp. I certainly felt the difference in the upper RPM range when I removed it from mine.

It sits between the inlet manifold and cylinder head and looks like this:



It is made of aluminium and about 5mm thick.
 

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Bill,

Mine was a 2.3lpt engine 97MY and it HAD the heater plate fitted, no longer though

It did help the breathing ot the engine massively when it was removed, I cant say I noticed any more power, just that it revved more cleanly to the red line.
 
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