fiestaturbo.com

[Smo]

Anyone had any experience of these?

http://cgi.ebay.co.uk/Ford-Escort-Zetec ... dZViewItem

Obviously for an Escort, but I can't see it would take much to alter it for a Fiesta system.

[freak power]

To many bends for a good flow but will be good for fast road

[Smo]

Hmm... I take it a better one with less bends would still be more beneficial for road-use though, over that one?

As you're an NA man, do you mind me asking what your opinion is on the Ashley ones?

[TarmacTerrorist]

i had to work on an xr2 with an ashley manifold and it was so bad quality that 2 of the down pipes had 6inch splits down them the whole maifold had to be heated up to take the tension off the bent tubes.

hope that helps

[sailorbob]

Primaries are too short IMO, four pots typically require about 31" primaries (including the exhaust port length) with 11" secondaries. The bends aren't too much of a problem as they are all fairly gentle.

EDIT: corrected primary length

[Smo]

Primaries are too short IMO, four pots typically require about 33" primaries with 11" secondaries (IIRC). The bends aren't too much of a problem as they are all fairly gentle.

I doubt there's anything that's on the market with those sort of lengths though, is there? I take it I would be looking at a custom job?

[sailorbob]

I ended up getting my exhaust manifold made up because I couldn't find an off the shelf one I was happy with the design of.

[freak power]

Mine was custom made too

[jimmyesh]

Sometimes it seems that everyone is too quick to see the bad in everything!

That manifold looks fine to me, in fact the upper part (4-2) looks very much like a st170 one in design, (except it doesn't bend towards the front of the car when it goes to 2 pipes) and everyone knows they flow better than standard zetec ones.

Those bends aren't too tight, they're necessary for making all the headers equal length before they meet up in the collector.

The bends there would maybe only hinder someone (by a couple of BHP) who was right at the top end of n/a zetec tuning (240bhp+ 2.1 litre n/a zetec for example) but that system would still free up a nice bit of torque and power for most other people and is definitely worth a look especially as £ for bhp would be better than spending £££+ on a custom one which would not see the full benefit on anything but a big-bucks full race zetec.

[freak power]

Thats my problem

I look at a produced like that and look for the faults as everything has to be perfected for my engine and me.

[Smo]

Cheers for the replies

Sorry I've been a bit slow in replying... I wrote out a huge reply at work the other day and accidentally loaded something else up on the page and lost it all, so got annoyed and walked off

Mr. sailorbob - May I ask where you got yours done, what sort of cost, and what car/engine it was for?

freak power - Similar sort of question as above, except I know what car and engine

jimmy - What exhaust manifold are you using on yours? I will actually go look now to see if you've shown/mentioned it in another post, but seeing as I'm here, I might as well ask!

I'm not too sure how far I want to go with NA yet, whether to go for big big power, or just a mild setup. I'm currently running a 1.8, so I would obviously be changing that for a 2.0, but was looking into changing the manifold now to see what sort of increase I could get out of the 1.8 before I do change it (the 1.8 has only been in 4 months ).

Just a couple more questions...

4-2-1 or 4-1? Ideally I would love to see a big increase in mid-range torque, but still some increase at the high end. Obviously, to have the best of both worlds would be great, but that's not going to happen So which am I better going with, bearing in mind that this is for road use? I'm assuming a 4-2-1 will give me what I want... But would I still see any good gains in mid-range from a decent 4-1?

How vital are the primary and secondary lengths? What sort of potential gains are wasted by a manifold that doesn't meet these ideal lengths?

If any of you lot were to go for a shelf item, what would you go for, and why?

Any answers to any of them are really appreciated

Cheers!

[freak power]

4-2-1 will be your best bet for you

[jimmyesh]

jimmy - What exhaust manifold are you using on yours? I will actually go look now to see if you've shown/mentioned it in another post, but seeing as I'm here, I might as well ask!

Cheers!

I'm using the YKC spoortscars 4-2-1 manifold on my st170/rs1800 beastie. This manifold is an "off the shelf" item and was perfect on my previous connaught £5k 2.1 220bhp/178lb/ft n/a zetec, it cost £250 new and has been totally faultless on my car for 3 years now.

Granted my connaught lump may have made (slightly) more power on a mega-expensive trick manifold, but for the quality and price of mine I don't think you can go far wrong. You really aren't gonna benefit from the most expensive manifolds unless you're right at the very top end of n/a zetec tuning (240 bhp+) and then it will only get you slightly more power/torque than a manifold like I'm currently using.

Looking at the st170 exhaust manifold, that looks good too, just a shame fitting is a bit tight on a mk3 fiesta (that's why i re-fitted the ykc item).

Sorry don't have any contact details for YKC sportscars, I know they did advertise in the fast ford etc.

[Smo]

Interesting. Is it a straight fit to the mid section, or was some fabricating needed?

[jimmyesh]

Interesting. Is it a straight fit to the mid section, or was some fabricating needed?

Fabricating neede mate! It come with an olive joint and a little straight section for lambda to bolt into. that straight piece has to join to de-cat pipe or cat joining flange (ooh i love that word! )

[Smo]

Cool... Not got any pics of it, have you? Off the car, that is

[jimmyesh]

Cool... Not got any pics of it, have you? Off the car, that is

Nah sorry! Will take a couple of it ON the car next time I get up the workshop if you like? I aint taking it off

[Smo]

I aint taking it off

What, why not?!?!



But yeah, any pics would be cool, but no worries if it's too much hassle

Cheers for letting us know about it though... A new one to look into

[sailorbob]

A guy local to me (ex Notts Custom Cycles) made mine up, it's for my Mk1 MR2 project. It cost about £450 which was comparable to the quotes I generally got for a one off. It should have been cheaper but because I got the guy to make it up without having the engine I screwed up on my dims a couple of times and had to get it modified twice (ho hum, live and learn). The primaries are 1.5" diameter, the secondaries 1.75" and the system 2.5".