Exhaust manifold 4-2-1 on a 172

[llgsimpson]

Right, so I have taken the plunge I bought myself a 4-2-1 manifold and a decat pipe, which hopefully will fit onto my current system (uses a pipe like the Ktec link for the decat).

I however probably should have read the fitting instructions first as I didn't realise you needed to drop the subframe to gain access to remove the manifold and replace with the new one!

I know there is a guide on here but It looks quite hard to follow, So I have 2 questions, is it really that hard? most I have ever really done is remove the intake and change the spark plugs and do oil changes and change wheels.

2nd question, if it is hard is there anyone in the East Yorkshire area that can do it for me?

after a bit of a read I am worried it might not fit too

 

[ThomasBrentnall]

It's about a 5 hour job. Is it a 182 manifold?

 

[Mr R.]

The sub frame has to come off or take the engine out.

 

[MicKPM]

And now for the good news... After all that effort you will notice nothing!

 

[llgsimpson]

And now for the good news... After all that effort you will notice nothing!

Nothing at all?

 

[llgsimpson]

It's about a 5 hour job. Is it a 182 manifold?

Yeah I believe so

 

[MicKPM]

*maybe* with a remap you will.see.a gain of 5-8hp but how much of that is down to the remap vs the gas flow is negligible.

You deffo won't notice it though other than when the EML is on due to the H02 efficiency check failing and at MOT time when you need a dodgy test.

 

[Dan@SJM]

Did you buy a genuine one or the cheap and nasty toyosport item?

 

[llgsimpson]

it already has the ron98 map on it, hmm, maybe I should resell and just look for a decent cat back for the 172? I bought the manifold and decat on the hope of better airflow and a few pops hmm

 

[llgsimpson]

Did you buy a genuine one or the cheap and nasty toyosport item?

embarrassingly I actually couldn't say, I won it on eBay from somebody who bought it but never got round to fitting it.

 

[Dan@SJM]

Does it look like this:

Or this:

 

[Djw John]

It's a lot of work for very minimal gains. I only did it due to snapping my cat and figured it cost similar to replacing it.

 

[llgsimpson]

its this one

 

[Dan@SJM]

Don't fit it.

 

[llgsimpson]

Don't fit it.

ah why not

 

[ThomasBrentnall]

As just mentioned on another thread, it's like a 6 fingered glove

 

[llgsimpson]

I'll see what it's like when it arrives, has anyone actually got one of these installed?

 

[ThomasBrentnall]

http://www.cliosport.net/forum/showthread.php?728493-RACE-MANIFOLD&highlight=manifold

 

[Djw John]

Ah toyosport one. Yeah just put it back on eBay.

 

[Dan@SJM]

They're shite.

Welds crack, runners crack, flanges aren't flat, the link pipe puts the exhaust against the body, or on the floor. The manifold itself hits the subframe.

 

[MartinR]

Waste of time waste of money.

Would you fit a square wheel?

 

[llgsimpson]

They're shite.

Welds crack, runners crack, flanges aren't flat, the link pipe puts the exhaust against the body, or on the floor. The manifold itself hits the subframe.

Typical, knew I shoulda asked before I bought it.

 

[llgsimpson]

Waste of time waste of money.

Would you fit a square wheel?

Nope I wouldnt, but I know wheels are meant to be roundish, manifolds however I'm still getting my head round, lesson learnt I think

 

[p@blo]

Welds crack, runners crack, flanges aren't flat, the link pipe puts the exhaust against the body, or on the floor. The manifold itself hits the subframe.

Sounds awesome. Where can i get one?

 

[llgsimpson]

Sounds awesome. Where can i get one?

I have one for sale

 

[Budgie]

Yep, pointless mod unless you've got the engine out or the subframe down, and then stick with genuine 182.

 

[llgsimpson]

What about just the decat on the 172 manifold, could I smash out my current one and buy a replacement when need be?

 

[Dan@SJM]

I've got a cat with the internals missing if that's of interest.

 

[Chip-mk1]

Yep, pointless mod unless you've got the engine out or the subframe down, and then stick with genuine 182.

Agreed the gains arent enough to justify the effort, but if you have the head off to change valves or engine out or subframe down to do the rack etc, then it makes sense then, but use a genuine one so it doesnt crack or you potentially end up quickly having to redo the job.

 

[llgsimpson]

I've got a cat with the internals missing if that's of interest.

Actually it could be, is it for a 172? And how much, otherwise I'll probably go down the ktec route

 

[STEVE.M]

They're s**te.

Welds crack, runners crack, flanges aren't flat, the link pipe puts the exhaust against the body, or on the floor. The manifold itself hits the subframe.

Quite good apart from that then?Thanks,I was thinking about buying the 2.5inch version.
I1m suprised Toyo tyres havent forced them to change there name!

 

[Dan@SJM]

Actually it could be, is it for a 172? And how much, otherwise I'll probably go down the ktec route

It is. £45 posted.

 

[llgsimpson]

It is. £45 posted.

pm me

 

[llgsimpson]

They're shite.

Welds crack, runners crack, flanges aren't flat, the link pipe puts the exhaust against the body, or on the floor. The manifold itself hits the subframe.

I have received this today, everything looks okay with it, the manifolds is a 2.5 Inch pipe and the decat end is 2.25, does this sound about right, on the box it says japspeed 172/182 Manifold and decat though

 

[America]

I have received this today, everything looks okay with it, the manifolds is a 2.5 Inch pipe and the decat end is 2.25, does this sound about right, on the box it says japspeed 172/182 Manifold and decat though

Did you ever try to have the manifold installed?

Jeez... I was seriously looking at these. Thanks for the warning everyone!

 

[llgsimpson]

Nope, I sold it, then bought a decat and exhaust for 2 3rd of the price, was too much hassle