250 Griff exhaust...can be improved
Good idea - and sure it can be improved - it was an early pre-computer modelling empirical design improvement on the challenger exhaust...........and has that slightly ugly sharp turn at end of the header and overly long diffuser and short body ...... I have made a different replacement for my 250 Griff ...and it improves - but the stock one is better than you would think !! Drop me a PM if you are interested and I will dig out my cone dimensions ...also note that by doing in 1mm steel ...the exhaust is considerably lighter than stock
I also computer modelled the QUB exhaust - of Dr Blair fame - and interestingly that one is very close to what my modelling sw recommended!!....the exhaust gas flow theory has not changed since 1972!
Cheers Kim
Good idea - and sure it can be improved - it was an early pre-computer modelling empirical design improvement on the challenger exhaust...........and has that slightly ugly sharp turn at end of the header and overly long diffuser and short body ...... I have made a different replacement for my 250 Griff ...and it improves - but the stock one is better than you would think !! Drop me a PM if you are interested and I will dig out my cone dimensions ...also note that by doing in 1mm steel ...the exhaust is considerably lighter than stock
I also computer modelled the QUB exhaust - of Dr Blair fame - and interestingly that one is very close to what my modelling sw recommended!!....the exhaust gas flow theory has not changed since 1972!
Cheers Kim
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