Contour Enthusiasts Group Archives Forums Modifications 3.0L Duratec Do I have a one of a kind LIM now?

Ok I have a 99 Sable 3.0L LIM, it consists of a early 99 cougar fuel rail and a 96 LIM linkage. It all bolts up properly but it took some work to make it work. I beleive I read that a 98-99 LIM has larger ports than an SVT? If this true I can post pictures and directions on how to do this. I am not going to say it's easy but it can be done. It consists of moving over the cable bracket. Undoing the screws for the valves on both LIMs once this is done the arm/linkage must be extracted from both LIMs, this was a pita for me. Once you have the 2.5L linkage arm out you have to file down the valve seats to accept the larger 3.0L valves. You really see how much larger they are at this step. Once this is done you insert the linkage into the 3.0L LIM. Then you must screw on the valves. The holes are in the right spot, it all centres it self out. If everything is done right it looks factory. It has been working fine for me for a few thousand kilometers.

Now this may be pointless I am not sure but will this net more power than an SVT LIM? Also did a similar configuration exist on any other model?

For me it was lack of research that got me stuck. I had access to a 99 3.0L duratec and I ordered a fuel rail from a early 99 cougar, had it been a late 99 it would have been returnless. I could have got the same thing from a 98-99 contour aswell just couldn't find one. There was no 2000 contour in Canada. I went to bolt on my UIM and it would not clear the LIM so I had to convert it. I could not find a SVT LIM from any wreckers.

So if by chance this is one of a kind, I will make a write up for it. It may be a nice alternative to a SVT LIM?

Now my next question is will I see a noticeable difference if I get an SVT UIM? Or is the majority of the increase in the LIM? With smaller ports on the UIM the air velocity is higher, from what I have read on here. Just wondering if it's worth doing.

Thanks

SVT LIMs came in two different styles. 98 had the 2.5L size with extrude hone. 99-00 came with a 3.0L size LIM. Late model cougars are supposed to be the same as late model SVT's also. So you got yourself a working bigger LIM then you are already equivalent to that found on an SVT.

It shouldn't net anymore power than any other similarly sized LIM. You do get the pride of having converted it over yourself though!

You may get no increase in power from that LIM at all yet depending on other factors such as TB size, exhaust flow, air filtration.

What Tom said.

You could just have paid $75 for a RLIM and it's a bolt on LIM.


Also on top of that even the early SVT LIM was larger then the stock head inlets. So going any bigger is not going to garner any gains because the head inlets are the bottle neck. (i.e. nasty lip - think about it for second )

That's why the 99+ SVT's had both head ports EH'd to match the larger LIM.