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ok, i know the non svt LIM has smaller primary and secondary ports than the SVT LIM. but what about the outer diameter? are they the same? reason i ask, i plan on port matching my UIM and LIM to the gasket size, but it seems that if i bore out my LIM to the gasket size, there doesnt seem to enough 'meat' on the primary port walls where the injector sits. Seems like i would bore right through. Any help would be appreciated.
Jim Hahn
1996 T-Red Contour SE Reborn 4/6/04
3.0L swap and Arizona Dyno Chip Turbo Kit
364 whp, 410 wtq @ 4,700 rpm
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Got two side by side!! The outer diameter IS the same.The ports are not the same bore all the way through-they are tappered.HTH
Mondeo V6 RS
RS Bodykit
RS Lowered
SVT UIM
SVT TB
SVT LIM
Philips 6000K HID ZENON
Twin Stainless Exhaust
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thanks for the info! 
Jim Hahn
1996 T-Red Contour SE Reborn 4/6/04
3.0L swap and Arizona Dyno Chip Turbo Kit
364 whp, 410 wtq @ 4,700 rpm
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Originally posted by Mondeo V6:
Got two side by side!! The outer diameter IS the same.The ports are not the same bore all the way through-they are tappered.HTH
Yes, but what SVT LIM are you comparing it too. The early LIM are just a stock LIM bored out ~2mm.
The late model SVT/returnless LIM is actually a different casting. It's around 4-7mm larger then either the early SVT or stock respectively as is.
LIM are classified by the inlet port diameter. They all taper to a smaller outlet port.
Something else you need to be aware of is the SVT's had the head inlet ports EH'd to open them up. (98/98.5 single - secondary & 99/00 dual - both ports)
Adding a larger LIM to an older SVT or especially any non-SVT will create a lip protruding into the airflow! Very bad for performance.
Also all head ports have a fair amount of machining flash that lips into the airflow too. A must to remove.
2000 SVT #674
13.47 @ 102 - All Motor!
It was not broke; Yet I fixed it anyway.
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Comparing to one i just purchased!! Fitted with green injectors,the outer casting is exctly the same,the inner ports are the 34MM Type..........
Mondeo V6 RS
RS Bodykit
RS Lowered
SVT UIM
SVT TB
SVT LIM
Philips 6000K HID ZENON
Twin Stainless Exhaust
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I know this is an old topic, however since I am about to make this mod, I figure I'll ask for some help. I dont' know demon, however from searching and reading his posts, he seems to be a resident expert... I have a 1999 Mystique, with the returnless fuel system. I was about to put on the 98.5 SVT UIM and LIM, but now, I don't think the LIM is the way to go. From what I gather from DemonSVT's quote, the LIM associated with the returnless fuel system is the largest bore, now where I am lost is the Head EH'ing. If the SVT Heads are opened up, and the 99+ Returnless Duratec has the larger bore- does this mean that there is a lip created by the stock duratec head???? I have the UIM and LIM from a 98.5. Do you see faults with my intention fo strap on the UIM?? Circa 2005 Originally posted by DemonSVT:
Originally posted by Mondeo V6:
Got two side by side!! The outer diameter IS the same.The ports are not the same bore all the way through-they are tappered.HTH
Yes, but what SVT LIM are you comparing it too. The early LIM are just a stock LIM bored out ~2mm.
The late model SVT/returnless LIM is actually a different casting. It's around 4-7mm larger then either the early SVT or stock respectively as is.
LIM are classified by the inlet port diameter. They all taper to a smaller outlet port.
Something else you need to be aware of is the SVT's had the head inlet ports EH'd to open them up. (98/98.5 single - secondary & 99/00 dual - both ports)
Adding a larger LIM to an older SVT or especially any non-SVT will create a lip protruding into the airflow! Very bad for performance.
Also all head ports have a fair amount of machining flash that lips into the airflow too. A must to remove.
99 Mystique 2.5l
Koni/HR Suspension
K&N Cold Air,Diablo Chip
SVT TB, MSDS, OPT-Y, Bosal
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Originally posted by NothernMystique:
I have the UIM and LIM from a 98.5. Do you see faults with my intention fo strap on the UIM??
You'll be fine but the 98.5 has the smaller bore lower IM if I recall. You'll just have to test fit them and visually examine the fit.
Otherwise, I don't see any faults with your Strap On plan.....
Former owner of '99 CSVT - Silver #222/2760
356/334 wHP/TQ at 10psi on pump gas!
See My Mods
'05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red
'06 Mazda5 Touring, 5spd,MTX, Black
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Originally posted by beyondloadedSE:
ok, i know the non svt LIM has smaller primary and secondary ports than the SVT LIM. but what about the outer diameter? are they the same? reason i ask, i plan on port matching my UIM and LIM to the gasket size, but it seems that if i bore out my LIM to the gasket size, there doesnt seem to enough 'meat' on the primary port walls where the injector sits. Seems like i would bore right through. Any help would be appreciated.
man, so much for that idea. I dont even remember posting this. I guess it has been like 3 years. I just ended up buying a 'factory mistake' return SVT LIM from SPmotorsports.
Jim Hahn
1996 T-Red Contour SE Reborn 4/6/04
3.0L swap and Arizona Dyno Chip Turbo Kit
364 whp, 410 wtq @ 4,700 rpm
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Posts: 39
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Originally posted by warmonger:
Originally posted by NothernMystique:
I have the UIM and LIM from a 98.5. Do you see faults with my intention fo strap on the UIM??
You'll be fine but the 98.5 has the smaller bore lower IM if I recall. You'll just have to test fit them and visually examine the fit.
Otherwise, I don't see any faults with your Strap On plan.....
HA! Nice burn with the strap on!
Does the LIM from the non SVT 1999 have smaller bore than the 98.5 SVT LIM?? I was under the impression that the 1999 model year 2.5 duratec has one size LIM, SVT=NON SVT.
Also, is there a larger bore upper intake manifold in the 1999-2000 SVT model year?
Maybe I should ask a more direct question, instead of confusing everyone. What is the best UPPER AND LOWER intake manifold upgrade for a 1999.5 non-SVT contour with a returnless fuel system?
Thanks for all your help guys,
99 Mystique 2.5l
Koni/HR Suspension
K&N Cold Air,Diablo Chip
SVT TB, MSDS, OPT-Y, Bosal
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Don't forget that the 2001+ Cougar LIM are the same as the late model SVT units 
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