Exhaust systems for N/A

[Kamatari]

Just wondering what exhaust systems people go for on their N/A\'s and where they got them from? I know my car has an aftermarket backbox but everything else is standard, Been having a look on ebay and whilst it seems like i could get hold of downpipes and decats, it seems all the manifolds are for turbo models instead!

[m1tch]

They do seem quite hard to get in the UK, I have seen a few from the US though:

http://cgi.ebay.co.uk/Mazda-13B-Exhaust-Header-79-85-86-92-RX7-FC-2-25-/120686941772?pt=Motors_Car_Truck_Parts_Accessories&hash=item1c1980964c

Might almost be easier to get one custom made with long primaries to get as much power from it as you can

[B.Martin]

Yeah you could locate a \'powerflow\' specialist, they are all over.

[m1tch]

I would only go with a rotary specific exhaust company, Racing beat do good exhausts, I think that a \'powerflow\' place would probably look at the manifold and go...what engine is this?

[Kamatari]

How much do you reckon I\'d be looking at for an exhaust system? All I need to get is the manifold, downpipe and straight through pipe and whatever gaskets

[Kamatari]

infact, going by that link you gave, that manifold is two seperate pipes, i take it i\'d have to get 2-1 pipe or have two seperate exhausts?

[Kamatari]

Yeah i dont think im going for a custom made system... getting quoted up to 800+

Now to source the parts, are racing beat just in the US? had a look on their site and i think the header is $260 and the presilencer is $260 (or something like that)

[Kamatari]

Been awhile since i\'ve posted here! havent really done anything to my rx7 apart from a bit of wiring and sorting the rusty wings....

still planning on sorting the exhaust out and everything, just wanting to know what people think...

Theres a place near me that are selling on ebay manifolds for rx7\'s but they say are for a turbo\'d model, i messaged them and asked if they did anything for a N/A but they just said check out http://cgi.ebay.co.uk/MAZDA-RX7-STAINLESS-STEEL-TURBO-EXHAUST-MANIFOLD-FC3S-/140459453189?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item20b4092b05

Which again is for a turbo. Now would i be wrong in thinking that i could just blank whatever is going off to the turbo and use it anyway?

[B.Martin]

I don\'t think you need an aftermarket manifold on a n/a mate, which is probably why your struggling to find one. I think I\'m right it saying you don\'t even need one on the TII unless your upgrading turbo (which obviously your not) I\'ve been looking at the eBay exhausts and they come recommended check out item number 200541854992 I\'m quite sure that will fit your n/a. I emailed them to ask if it fitted the turbo model and \'they couldn\'t guarantee it, so it must be designed for the n/a.

As far as the custom exhausts go, £800 is steep have you tried a powerflow place? I think they\'re usually around £300 so maybe I\'d estimate £500 for a twin system with Y pipe. Unless they have doubled their prices, which in the world we live in isn\'t beyond belief! What year is your n/a? Are you sure it even has a cat?

Hope this helps mate. Been a long time since I owned an n/a and I remember having fun looking for stuff then for good prices.

Ben

[dthebuk]

aftermarket manifolds are where all the power is on an N/A.

Racing beat is the way to go,  http://www.racingbeat.com/RX7-1986-1992/Exhaust-Headers/16129.html

they\'re not cheap but guaranteed to fit, and fit well. Rotechniks and mazda rotary parts both sell racing beat stuff.

The problem with racing beat is that their pipe lengths tend to be a bit different to stock meaning you generally have to all racing beat parts or a couple of stock bits. I recon getting a header, then getting a decat made up would give you a lot of noticeable power

[B.Martin]

HaHa, there you go. Someone that knows what they\'re on about!! >.<

[MrHanky]

Failing getting a system from RB, you could also try a place called custom chrome.  They are based in Nuneaton which isn\'t too far from you.  Have a good reputation and have come recommened by a friend who is a professional rally mechanic.  He has had a few systems from there and is happy with their work.
 
http://www.custom-chrome.co.uk/
 
Good luck anyway.
 
Mark

[Prof]

I don\'t think you need an aftermarket manifold on a n/a mate, which is probably why your struggling to find one. I think I\'m right it saying you don\'t even need one on the TII unless your upgrading turbo (which obviously your not) ...
Ben

On both N/A and Turbo the stock manifold are a little restrictive.
 
I think on the N/A you can go with dual headers, but all the emissions stuff has to come off for that - but good potential for power increase over stock
 
On a TII, if you\'re keeping the stock turbo, you can get some benefit from running a custom manifold, but the downpipe and exhaust are more critical ( after turbo), as these should be as unrestrictive as possible.

[B.Martin]

On a TII, if you\'re keeping the stock turbo, you can get some benefit from running a custom manifold, but the downpipe and exhaust are more critical ( after turbo), as these should be as unrestrictive as possible.

I believe that my car has an aftermarket exhaust and downpipe... Although i won\'t know yet for a few weeks.

But good advice all round here, i\'m sure kamatari will have the answers he needs now.

[Kamatari]

Cheers for all the replies everyone! just checking the links out now

My car is a UK \'89, i dont think they have cat\'s but just the two thermal chambers (i think its two), The people who had the car before me has had a custom backbox made up by mij a few years a go so just need all the piping up to that really, I was planning on removing all the emissions stuff aswell

So i would need to get a manifold, down pipe and mid pipe and thats everything yeah?