BrawnFG
Well-Known Member
I got a cheap, £45, pipe from Nimph modlels, and from a bit of digging it looks like it's a spare part from a Chinese Marder copy. This is a quick review of it (I'll add images tomorrow, and try and get a vid up next week)
The pipe is alu, and chrome plated (mmm shhiny). The supplied gasket is lead, so moulds well once you torque the header bolts down (do them 1/8 turn at a time and alternately to get a good seat). A tiny smear of automotive gasket goo helps too. I had to dress the header face on the pipe first to get it perfectly flat, but this only needed a needle file and 10 mins effort.
On it's maiden tune and run the new pipe definately seemed to have much more power than the standard can. Louder yes, but not stupidly loud. Unfortunately I don't have any other tuned piped to compate it to.
I have not added any support to the back of the pipe yet (bit of coat hanger), but it seems prety sturdy on its own. I rolled it a few times and it has picked up a few minor dents, but no bends are apparent.
I'd say it feels like a mid range pipe. It definately spins the wheels more through the low to mid rev range, but due to poor traction i couldn't get wheelies on command, but with the aid of a bump or stone to lift the front end and shift the weight backwards it will wheel-stand.
Being a bit of a geek I have used my GPS to get some hard data on performance wit hteh stock can and with this new pipe.
Top Speed: Stock = 40.0mph Tuned pipe = 39.1mph
I call that a dead heat, and it is probably as I need to tune the engine properly to get max RPM from the new pipe.
Acceleration: Stock 3.5m/s/s max, Tuned 6.0m/s/s max
It's pretty clear that the Tuned pipe has it, almost double the peak acceleration. From looking at the data, the peak hits in between 20mph and 30mph, to this is definitely a mid range pipe.
To avoid spurious results I've filtered the data for any silly high accelerations, and only considered runs that lasted longer than 20s.
Next week I'm going to trim the Baja shell and will post pics and a vid of it running (got to remove the engine and grass proof it first, being spring and all).
The pipe is alu, and chrome plated (mmm shhiny). The supplied gasket is lead, so moulds well once you torque the header bolts down (do them 1/8 turn at a time and alternately to get a good seat). A tiny smear of automotive gasket goo helps too. I had to dress the header face on the pipe first to get it perfectly flat, but this only needed a needle file and 10 mins effort.
On it's maiden tune and run the new pipe definately seemed to have much more power than the standard can. Louder yes, but not stupidly loud. Unfortunately I don't have any other tuned piped to compate it to.
I have not added any support to the back of the pipe yet (bit of coat hanger), but it seems prety sturdy on its own. I rolled it a few times and it has picked up a few minor dents, but no bends are apparent.
I'd say it feels like a mid range pipe. It definately spins the wheels more through the low to mid rev range, but due to poor traction i couldn't get wheelies on command, but with the aid of a bump or stone to lift the front end and shift the weight backwards it will wheel-stand.
Being a bit of a geek I have used my GPS to get some hard data on performance wit hteh stock can and with this new pipe.
Top Speed: Stock = 40.0mph Tuned pipe = 39.1mph
I call that a dead heat, and it is probably as I need to tune the engine properly to get max RPM from the new pipe.
Acceleration: Stock 3.5m/s/s max, Tuned 6.0m/s/s max
It's pretty clear that the Tuned pipe has it, almost double the peak acceleration. From looking at the data, the peak hits in between 20mph and 30mph, to this is definitely a mid range pipe.
To avoid spurious results I've filtered the data for any silly high accelerations, and only considered runs that lasted longer than 20s.
Next week I'm going to trim the Baja shell and will post pics and a vid of it running (got to remove the engine and grass proof it first, being spring and all).
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