112 Lsa
#2
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Originally Posted by waterbug1999
Is that TOO much for an A4? Thanks
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
#3
TECH Senior Member
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.
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.
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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.
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.
#6
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
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#8
Originally Posted by Adrenaline_Z
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.
Try e-mailing their support team for data on both cams.
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.
#9
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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.
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The specs on the G5X3 are not publically advertised.
their motor and posted that info
#11
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Originally Posted by Adrenaline_Z
I bet they'd get pretty pissed if someone stuck a dial and degree wheel on
their motor and posted that info
their motor and posted that info
#14
11 Second Club
Originally Posted by waterbug1999
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?
Anyways.. I have read alittle bit about the G5X4 cam? Thats suppose to be a nice one, correct?
#16
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Originally Posted by waterbug1999
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.
TSP, FM, LGM, TR I guess anyone of those you cant go wrong.
#18
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