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MG MGF Technical - Any suggested mods??
|The dreaded headgasket has gone again after replacing it 30k miles ago with a MS heavy duty gasket!|
I've got a bit more longer to do it this time so i'm thinking of getting the head ported, is this worth doing on an MPi?
Can anyone suggest anywhere i can get this done local to the midlands?
Also has anyone got any ideas on what other mods i can do to make it drive more like a sports car as apposed to a ford fiesta??
Cheers in advance for any ideas
|Have a look here http://www.dvapower.com/ his work is very well thought of. Also there is Sabre heads but I don't have a URL.|
|Cheers Steve i will contact them on monday, think i will fit a new exhaust and do the Rover 820 airbox mod as well while i'm at it, is it worth shelling out for a 52mm throttle body?|
|A 52mm tb won't benefit you until the head is breathing so well the 48mm tb starts restricting flow. A ported head obviously flows more air, but until the MPi head is producing more than VVC power (about a 20% increase) your only advantage is in it being alloy and not plastic - less likely to stick or jam. It will certainly feel sportier, because the 52mm diameter flows significantly more air for any given pedal position.|
If you port the head, to fully enjoy the gains from a sports exhaust you should consider the 4-2-1 manifold too, archived now I think but check Rob Bell's posts on the subject. And, as Steve suggests, look at Dave Andrews site for the K-Series bible, extremely informative.
MGRs demise has rather taken the sting out of the Hall Of Shame, but I suppose you'd better submit your new HGF entry 8-(
|Wayne, at the moment I think I am finding myself in a similar predicament: I need to have the head off for investigation - and while doing that, I might as well consider tuning options.|
Having a head gasket failure obviously forces your hand somewhat, but it is worth spending some time thinking about what your objectives for the car is.
For me, I have plans for about 220-240bhp with the aid of a supercharger and a ported VVC (or VHPD) head. However, for this kind of power, you need a rebuilt bottom end - something I had in mind, but I probably don't have the funds for right now.
But I do have a 'spare' TF135 head complete with cams etc.
My thinking is for a quick and dirty DVA port on that, and reassemble the engine with that. Should be a pretty cheap option. The other option is to just fit the head without any work - but what a wasted opportunity! ;o)
In view of my longer term plans, there isn't much point going for anything more elaborate than a basic clean up.
However, your plans maybe more modest. Research your objective, and get a head sorted that suits that - otherwise you'll end up spending more money taking the engine apart to upgrade further at a later date...
I would DEFINITELTY recommend a decent 4-2-1 manifold. I've got a Powerspeed stainless manifold (cost me 450 beer tokens) and is absolutely stunning - more power everywhere, from idle through to peak revs, and perhaps most noticable in the midrange. Highly recommended.
A 52mm throttle body is worth while if cheap: they don't release a good deal of power, but do make the throttle more responsive - a characteristic many would consider worthwhile :o)
A 820 airbox mod is definitely very worth while - you'll be surprised how the car is transformed from low rpm to mid range :o)
I'm going to look into getting the head ported but i had not considered the 4-2-1 manifold, i didnt realise it would make that much difference!
I quite fancy a miltek exhaust (like the noise) and i've got a mate sourcing an airbox, the heads coming off on Friday so full steam ahead, I dont think i can drive the wifes ford KA for much longer 8-)
|air filtero for the big bore,ive fitted a folkon 4 branch man,and ss system 1 bullet box 1silencer standard bore fom moss ,costs around|
This thread was discussed between 15/07/2005 and 18/07/2005
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