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Manifold - Stainless vs Cast


larryt
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hi all!

 

whilst perusing the internet i stumbled across this lovely stainless manifold for my RHD 1600

 

http://www.fritzsbits.co.uk/exhausts-manifolds/2002-m10-manifold-set-detail

 

now my question is.. can anyone advise the benefits/disadvantages of me fitting something like this to a 1600 engine? would i get any performance increase? or would it be purely for show?

 

i really like the idea of keep the original engine in the car so i think it would be an upgrade i would eventually go for when i tackle the engine bay tidy/refurbish 

 

thanks 

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To be honest the RHD is always behind the eight ball when it comes to exhaust manifolds. As you can see, the Fritzbitz one has an unusual design. This is to work around the steering box  but you end up with unequal length exhaust runners. It will definitely 'flow' more but the design suffers by not enabling efficient scavenging of exhaust from cylinder to cylinder as the pulse from one cylinder should assist to pull the exhaust out of another cylinder.  Would you see much in the way of power increase (particularly on a 1600)? Not sure.  They basically used the same cast exhaust manifold and downpipe for all years and models of RHD so you have the same exhaust as a tii so you are not likely to see a night and day type change. 

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5 minutes ago, Simeon said:

To be honest the RHD is always behind the eight ball when it comes to exhaust manifolds. As you can see, the Fritzbitz one has an unusual design. This is to work around the steering box  but you end up with unequal length exhaust runners. It will definitely 'flow' more but the design suffers by not enabling efficient scavenging of exhaust from cylinder to cylinder as the pulse from one cylinder should assist to pull the exhaust out of another cylinder.  Would you see much in the way of power increase (particularly on a 1600)? Not sure.  They basically used the same cast exhaust manifold and downpipe for all years and models of RHD so you have the same exhaust as a tii so you are not likely to see a night and day type change. 

 

this is exactly what i was thinking, im not sure having the extended headers on a 1600 would give any benefit. i like the look of it, but if its going to give me a decrease in performance i might stick with the stock

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