ABZ v8 tuning

[Ap83]

Hi guys. I’m new to the forum and am thinking of going from an mrc tuned b5 s4 to a v8 converted b4.

I wanted to ask if anyone knew how to increase the bhp without going down some bonkers expensive route.

I was thinking. Would a different v8 cam fit from another model? Is there a better intake manifold to use? Would porting and polishing work? Do you need to change the valve train for higher rev limiter etc etc.

I wouldn’t want to turbo it..... yet...

It’s an abz block.

Any help appreciated.

Aidan


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[speeding-g60]

S8 cams from what i understand.

[Ap83]

Thanks, do you know what engine code that would be?


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[piotr]

I wouldn't expect any spectacular power increase on normally aspirated engine.

[Ap83]

Ahc and akh engine maybe. I wonder if I’d need new valve train with new cams.


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[Ap83]

I wouldn't expect any spectacular power increase on normally aspirated engine.

Yes I know it’ll not be huge. But it’s more about useable power and reliability. I’ve got a 450 bhp twin turbo at the minute and it’s great but almost too much for the roads where I live.


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[prj]

Waste of time.

[Ap83]

Waste of time.

Fancy giving me a bit more info please?


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[piotr]

I guess it's just that for all the hassle and amount of money you will gain such a small improvement that it is just waist of time and money. I would just stick to your S4

[Ap83]

Yeah it’s more of a project that will eventually be turboed. The b5’s are amazing cars but highly strung. A single turbo b5 would be much better.


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[add]

The only option other than turbocharging which is relatively good bang for buck would be nitrous oxide,for what you would spend tuning an n/a engine for power you could buy a b7 rs4 engine which are over 400hp from the factory,but it kind of makes it all irrelevant if the plan would be to turbo it anyway...save the money for that

[piotr]

Put the K&N filter on it.no more power but it will sound lovely

[Error404]

400hp V8 - easy, just buy a BNS out of a B7 RS4

[macspring]

Put the V8 out of a B7 RS4 into a UrS6, more room in the engine bay and just as much fun, and Audi it with their LHD UrS6+ cars so you would have oem custom parts that you might be able to utilise.

But it won't a cheap exercise even doing the work yourself, as mentioned it might be cheaper to just buy an S2 or UrS6 and make it RS2+ and leave it at that.

Either way your wallet will take a hammering, it might well be cheaper to deal with the devil you know with your existing B5.

The other man's grass is not always as green and you might think.

Best wishes.