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The exhaust system of the Type 60 Series 4 Lotus Seven consists of two 2-into-1 manifolds ( [link] and [link] ) that join outside the chassis to a 2-into-1 collector that is part of the side pipe ( [link] ). The silencer (muffler) is positioned transversely under the boot of the car ( [link] ). The silencer had been replaced at some point by a glass pack “Cherry Bomb” brand unit, as evidence from the color. It was decided to retain this despite its expected louder sound.

The two 2-into-1 exhaust manifolds in place during the teardown.
The two 2-into-1 exhaust manifolds after removal.
Left hand side of the rolling chassis, during teardown, showing the 2-into-1 collector and side pipe.
Right hand side of the rolling chassis during teardown showing the position of the silencer (muffler).

Each of the components was cleaned and ceramic coated by PolyDyne Performance Coatings to provide corrosion protection ( [link][link] ).

The outer (cylinders 1 and 4) 2-into-1 exhaust manifold after coating. Compare to [link] .
The central (cylinders 2 and 3) 2-into-1 exhaust manifold after coating. Compare to [link] .
The coated 2-into-1 collector and side pipe that runs along the outside of the chassis.
The coated silencer (muffler) and associated pipes.
The entire exhaust system after coating.


  • PolyDyne Performance Coatings, 11211 Neeshaw Drive, Houston, Texas 77065, USA. Tel: +1 888 765 9396 or +1 281 894 6382. www.polydyn.com .
  • Cherry Bomb, 2400 Maremont Parkway, Loudon, TN 37774. Tel: +1 866 869 9704. www.cherrybomb.com .

Questions & Answers

Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
what is the k.e before it land
what is the function of carbon nanotubes?
I'm interested in nanotube
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Lotus seven s4 (type 60): design, restoration, and maintenance. OpenStax CNX. Jun 07, 2013 Download for free at http://cnx.org/content/col11418/1.19
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