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Discussion Starter #1
Hi all
Has anyone looked into tuning the big 6.75 ??
I know it's a big lazy engine and cosworth had a play around but 300+ ponies from a 6.75 turbo is horendous !!!
When I was building the vw golf cup engines the basics was 1bhp per cc
I was building 200+ bhp naturally asperated engines all day
I would expect a lazy turbo of this size to be in the region of 600+
Just a thought 馃槅
 

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Hi Blue
From what I've seen the if the VW group can only get this for the Mulsanne speed quote" Its 6戮 litre twin-turbocharged V8 engine generates 530 bhp / 395 kW / 537 PS) at 4,000 rpm and 1,100 Nm (811 lb.ft) of torque "
Then thats the best you can get reliably , too high a cam lift and they don't last ,too much boost blows the head gaskets.
Enough for me!
It's the torque not just BHP
ok
Just my opinion ok
Mike
 

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Earlier 6.75 engines were higher compression. For tuning purposes one must consider air,fuel delivery and exhaust. The exhaust and ex manifolds on these cars (SY+SZ series were not exactly performance oriented and there really isn't space between block and body to fabricate and install. There is a company in the US that tweaks these engines for performance. They are robust since in later cars they were turbo'd etc.
 

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Discussion Starter #4
Hi thanks for the replys
I agree on first impressions it's the breathing thats the problem
Was just wondering if anyone had had a play as an engine that breathes better is more efficient -hence better fuel economy lower emissions etc
 

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well if you have a lovely VW kinking out 860 N.M.T then you can come and play with my 97 Turbo R
when you have a car that will out drag a Porsche T.T try it some time you mite change your mind
 
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