Is that TOO much for an A4? Thanks

 

I hope not! I've had a 112 LSA cam in my A4 car for about a year now!

Seriously, no, it's not too much as long as you get your car properly tuned. My cam not only has a 112 LSA, but it's a split-duration cam (choppier than a single-duration) and it idles a little rough at 825 rpm, but is never in danger of stalling.

Here's a short video clip of my car idling. Cam specs and mods in sig.

XTrooper Cam Video Clip

 

No, but you got to be careful not to run too much duration or you will run into vacuum problems (which can be solved by vacuum canister).
IMO something in the neighborhood of FM 11 will work fine with a tune from an experienced tuner.
Basicaly up to low 230 durations, you'll be fine.

 

i had tsp's 231/237 598/595 112 cam in my car for a good while with my own tuning and it idled/drove just fine with no vacuum problems.

 

LSA by itself doesn`t indicate pressure loss in the manifold.

You also need to consider the IVO and EVC points to determine the amount
of overlap.

Example:

A 114 LSA could have a more of an effect on manifold pressure than a 112 LSA.

LSA is the difference in degrees between the intake centerline and exhaust
centerline.

IVO determines when the intake valve opens. EVC determines when the
exhaust valve closes.

The duration of having both valves open at the same time is what you need
to consider to tune the engine RPM window.

LSA gives a general overview but can sometimes mislead you depending on the grind.

 

Well, I was looking at the G5X3 cam from LGMotorsports. But the 2 cams are like ????. So, one is 112LSA and the other is 114LSA. Im getting a 3800 stall so either one would work i guess right? If they dont give you the #'s, then how to know which one would have the better rumble? So, go by the LSA?? I want a big cam and i want it to rumble pretty good. So, any suggestions would be help. Thanks

 

There must be a tech support line, or cam card link we can look at?

Try e-mailing their support team for data on both cams.

 

I have heard that they wont give the spec numbers out. If they did, then it would be all over this site and they could just fill the info in on their website.

Thought about TSP's magic stick combo for 699 (i think). But, 2-3 people in my area all ready have this. So, I was looking into another "big" cam set up. But LGM's package was like 1K for the same stuff (dual springs, retainers, etc.)
Why are they higher in price if the only thing different would be a small cam difference im sure.

 

The specs on the G5X3 are not publically advertised. Their stuff is pretty expensive too. LSA itself doesn't mean jack, it's overlap you are worried about. Don't worry about it. I run the MS3 in my auto. It has ~13.5 degrees of overlap.

 

I bet they'd get pretty pissed if someone stuck a dial and degree wheel on
their motor and posted that info

 

Even that wouldn't tell a whole lot. The numbers @.05, lift and LSA are a far cry from knowing it all. Quite a few members of this board know the specs, but they are respecting lou's wishes and keeping it to themselves. Those that need to know the specs, know them. There is a LONG thread or two about this if you search.

 

So how you suppose to order it if you cant compare their cams to others.

Anyways.. I have read alittle bit about the G5X4 cam? Thats suppose to be a nice one, correct?

 

This is true, and that's why I'm surprised they don't offer the valve timing.

 

The numbers on the X2 are known. The X3 is a little bigger, the X4 bigger still. You can still compare their cams to others based on the results of others. Most people (myself included) honestly don't know enough to pick the cam that is right for us anyway. You can always call LG and see which of their cams they recommend based on your setup, uses and goals.

 

The more i read, the more difficult it gets to make a choice. I want a nice big cam, but i dont want to have to spin it to 7K either.
TSP, FM, LGM, TR I guess anyone of those you cant go wrong.

 

That's how it goes with decision making. They all make quality cams, you really can't go wrong so long as you pick something relatively close to meeting your needs. Of course, you have to be honest with yourself in determining what you want. "Brutally honest" by JRP's cam guide.

 

I looked but did not find JRP's write up. where is it again??

 

http://www.ls2.com/forums/showthread...threadid=19550

It's linked from his sig.

 

Cool deal.. Thanks

 

So, given the numbers are the same.. Typically the 112 will "lope" more?

2??/2?? Duration & 600/610 Lift at 112 Lobe Seperation.
2??/2?? Duration & 600/610 Lift at 114 Lobe Seperation.

And if this is the G5X3.. Then how bigger could the G5X4 be?