Author Topic: Next problem - Exhaust!  (Read 7936 times)

Offline tweed

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Re: Next problem - Exhaust!
« Reply #10 on: 22 January 2014, 14:33 »
Ill dig it out later and take a pic for you.

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Offline Ess_Three

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Re: Next problem - Exhaust!
« Reply #11 on: 22 January 2014, 15:23 »

Its a Supersprint tubular exhaust manifold and down pipe 4in2in1.
Which is necessitated by the 2.1litre engine with flowed & ported head

You don't need to run a tubular manifold on a 2.1...ported head or otherwise.

2.1s make torque, not revs...so unless you are going full race, solid lifters and bigger valves ALONG with big cams, and going to 8000+ RPM, you can manage just fine on a standard set of downpipes and a ported exhaust manifold.

If you run that manifold you have you will have to run near solid engine mounts unless you fit some form of flexy joint.

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Offline Len

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Re: Next problem - Exhaust!
« Reply #12 on: 22 January 2014, 15:50 »
I have a standard stanless flange that I made to fit a aftermarket manifold. I gasket matched it but made the inside diameter bigger to fit the aftermarket manifold.

I still have it as I sold the car.

Cant you make a flange? Its not hard.

I can cut the end off the old manifold and weld it to the end of the down pipe.
It needs the sort of diamond flat plate connector that you put 2 bolts through.


Ill dig it out later and take a pic for you.
Yes please
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Offline Len

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Re: Next problem - Exhaust!
« Reply #13 on: 22 January 2014, 15:54 »

Its a Supersprint tubular exhaust manifold and down pipe 4in2in1.
Which is necessitated by the 2.1litre engine with flowed & ported head

You don't need to run a tubular manifold on a 2.1...ported head or otherwise.

2.1s make torque, not revs...so unless you are going full race, solid lifters and bigger valves ALONG with big cams, and going to 8000+ RPM, you can manage just fine on a standard set of downpipes and a ported exhaust manifold.

If you run that manifold you have you will have to run near solid engine mounts unless you fit some form of flexy joint.


Part race biggest cams with standard lifters.
JNL Racing that did the head for me advised I needed a tubular exhaust manifold.
This Supersprint does have a flexi connection - two pipes go down to one and there are two of them. Then it goes to a flexijoint which takes the remaining two pipes down to one.
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Offline Len

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Offline Foreveryoungaus16v

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Re: Next problem - Exhaust!
« Reply #15 on: 22 January 2014, 16:07 »

Its a Supersprint tubular exhaust manifold and down pipe 4in2in1.
Which is necessitated by the 2.1litre engine with flowed & ported head

You don't need to run a tubular manifold on a 2.1...ported head or otherwise.

2.1s make torque, not revs...so unless you are going full race, solid lifters and bigger valves ALONG with big cams, and going to 8000+ RPM, you can manage just fine on a standard set of downpipes and a ported exhaust manifold.

If you run that manifold you have you will have to run near solid engine mounts unless you fit some form of flexy joint.

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Offline tweed

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Re: Next problem - Exhaust!
« Reply #16 on: 22 January 2014, 16:48 »
You got to run that exhaust!  Once its done you will get solid lifters and a 8000rpm limit

Here is what I made.

Untitled by tweedub, on Flickr


Untitled by tweedub, on Flickr

Untitled by tweedub, on Flickr

Offline Len

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Re: Next problem - Exhaust!
« Reply #17 on: 22 January 2014, 19:38 »
Yea thats it! It is 3 bolts just been out and checked! lol

I can go to 8000 with what I have.
I have seen the graphs of another less worked on engine that has done 8500!

Oh I am definitely going to fit that exhaust!
« Last Edit: 22 January 2014, 19:45 by Len »
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Offline Len

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Re: Next problem - Exhaust!
« Reply #18 on: 22 January 2014, 19:46 »
Still undecided about going decat.
Might just go to an exhaust place and get a length of tube and a reducer.
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Offline tweed

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Re: Next problem - Exhaust!
« Reply #19 on: 22 January 2014, 21:22 »
Still undecided about going decat.
Might just go to an exhaust place and get a length of tube and a reducer.

Thats what I would do. Tell the mot tester and he will pass you. Find a young tester.

Luckily I have a few mates that test cars.

Untitled by tweedub, on Flickr