I know you probably get a few too many of these sort of posts but just thought Id ask.
Im saving up a fair bit of money (Nothing huge) to get a mid 90's or later falcon++(XR would be fantastic) and in the mean time wanted to make a few cheaper upgrades to me old XF.
It's the '85 model with the 4.1 in it and I think the only thing non-standard apart from the 80-Litre fuel tank(which lasts about a week DAMN :) - ) is the LSD I got put in about 3 months ago after I blew the stock one that was in there before ( I think its from an '87 Fairlane, least thats what I remember the guy saying). Pretty good steal for $150 plus paid $50 installation.
Anyway the reason I ask is because I really love the old beast but the fact thats its virtually stock gives me the shits. I'm not looking at dropping a 351 in it or buying a Supercharger or anything (Although it would be nice, you legend MRJUCY :}). I've had extractors, new exhaust block, various intakes suggested which all sound pretty reasonable pricewise.
Apart from this Ive had several mates suggesting I do up the asthetics of the car, mainly a bonnet with 10cm scoop on it for like $50 at this wreckers in Morley, Perth. This of course was meant as a full joke, but would most likely act as a hilarious point of conversation like the early 90's excel sedan I saw the other day with a rear spoiler probably 20-25cm high sticking out the roof (RIDDDDIIICULOUS, although I wouldnt mind the 384kW power increase such an amazing technological wing would give to the car.. ppppfffft)
Anyone quote prices on any of these things, or anything else that is cheapish that can improve my aging XF.
P.S Also does anyone have any idea what the actual power output of the 4.1 is? I read 132 hp somewhere but wasnt sure.
From memory 4.1 carb is around 99kw, give or take a few, depending on unleaded or leaded.
Main problem on 4.1 is exhaust side and restrictive intake which doesn't flow to carb's potential. John Cain (Sydney) had some new intake manifolds left for about $150 last year, and real good value at that. The stock Weber carb will flow close to 350 Holley and no linkage or emission or hitting bonnet problems, but you'll need to make an adaptor plate as most if not all intakes are set up for Holley I think. Bit of aluminium plate with a drill and jagsaw and it's easy. Cheapest exhaust improvement is cat back, but main problem is in manifold so extractors will be best. Better cam will help if you can afford it. Have a look at Crows website or just get the 4.1 EFI cam from a wreckers as it'll improve things at a lot less cost and shouldn't affect idle much or at all. 3.23 or higher diff will make it accelerate quicker than stock 2.77 or 2.92 if you've got that. Cheapest way is to do drum to drum axle swap from a wrecker etc. Get a disc axle if you can and upgrade your brakes at the same time.
Just make sure you don't lose insurance cover with any of these. Check with your insurer first.
Theres No Difference Between EFI And Carb Cams!!!!!
The intake is probably the best bet $$$ wise. You might like to pick up another cheapie alloy head, get that recond with bigger intake valves, get the exhaust cleaned up, and have it port matched to a high performance intake manifold for the Weber carby. That way you can still run the stock airfilter on it, which will generally dissuade the coppers from taking a closer look under the bonnet (when you get pulled up!). Or, if you feel like a bit of yakka (carb linkages, fuel lines, that sorta thing), i'll sell you my twin carby manifolds i've got sitting around (i'm in Lesmurdie)
D&S in Kenwick do an excellent job, i've had several jobs done by them, all were top stuff.. $200 for a basic recondition, then add more $$$ for fresh valves, etc etc..
Originally posted by discokin6 Theres No Difference Between EFI And Carb Cams!!!!!
Yes, there is. A bit more duration on the EFI one. I think lift is about the same.
And by making me think about it, you've made me realise that I was still wrong in another respect, because the genuine EFI one doesn't have a fuel pump lobe on it, so there's no point trying to put that in a carb. Some or maybe all of the aftermarket ones have the fuel pump lobe on the EFI grind, which must be what I had in mind when I made the original comment because I was just thinking of sticking an EFI grind in it. EFI one has the advantage that it doesn't need stronger springs, unlike bigger cams. Crow can supply either grind. Still probably a lot more trouble than it's worth.
It's pretty minor difference in duration, but I can't remember specs, so they'd probably look much the same.
Don't where I picked this up, but it when I was looking at improving the old XF that I found out that the EFI cam had a touch more go in it and the specs were slightly different, but I can't remember where I saw the specs. Maybe somebody like Crow had a list. I had a feeling that somebody at FSP put me on to the EFI cam in the first place, but maybe not.
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