Porting an LIM

[petraman]

Here's one for you L36 guys (or L67 guys that know how to port...). How do you port a LIM? I'm getting one from the junkyard and I'm going to be working on it next week. I've set aside about a total of 7 hours for it. People have told me it will take anywhere from 6 to 8 hours for first timers. What's the best way to do it? I'll be using a dremmel...

[willwren]

I'll do another follow-along for you. I have two inbound.

[The Crunge II]

I am also going to port a LIM for my car in the coming weeks so ill be following along

[MaxNismo]

"A kindergardner who can draw inside the lines could port an IM" -annon

port matching is more important then porting fwiw least imo from my experience and everything i've read...

any write up you see without that is just inviting more turbulence into your intake manifold then is already there. I have no doubt Will will(ha!) address this as i know he's very knowledgeable relating to performance modifications, especially relating to 3800s. i just thought i'd throw that out there for those whom don't know about it. also turbulence = bad. while basic porting may show some gains w/o port matching, it being port matched is the #1 thing you want to be concerned with and they will also net the most gains when done together correctly.

also don't polish the inside. it's a common misconception from everything i'v read about laminar flow...

good luck!

There are tons great articles and white papers a quick Google search away on this subject written by VERY knowledgeable people with great write ups/how to's and tons of pics if you can't wait for Will to get his up and your just dieing to do some porting!
here are a few:
http://www.automedia.com/Port_Matching_ ... 040801pm/1 <--how to port match. i
http://forums.evolutionm.net/showthread.php?t=275267 <-- goes over porting and matching decently...

edit: if you somehow manage to port through your intake runner, which means you've gone WAY WAY to far into the runner's wall, jb weld will fix it up fine. thought it might not look so great from the outside.

[wingman]

i'm also excited to see willwren's follow-along LIM porting because i just bought a LIM for an L36 from a buddy of mine for a case of beer in return!! (what a DEAL!!)

[wingman]

btw.......MaxNismo, thanks for the websites you posted on how to do port matching.....very helpful.

[Barry]

Guys, wait for Bill's post. The links above show gasket matching, not true port matching. You don't want to port to the gasket opening. It will be to large.