Soooo...would a torquer v2 with 114 LSA work for a turbo cam? You guys are a bit over my head with most of this thread.

 

i use the Texas Speed Torquer V2 and it works great. builds boost quick but i kinda miss my old LS6 cam.

 

Whys that?

 

well the torquer V2 has more overlap than the LS6 so a bit will be lost between the valves. the LS6 cam is aiot tighter so it acts better with low RPM boost.

 

I know this thread is kind of old, but I just finished reading the whole thing and it has some excellent and useful information.

 

???it was stated many times is that lsa is a measurement of events and is irrelevant, but many times ive hear references between lsa and different engines ? is a 106 lsa for example the same as the 106 on a buick or vw engine?? will it affect the different engines the same?

 

LSA is what the cam is cut (made) at, so yes a 106 LSA cam be it a 4 cylinder or 8 is the same, does it affect different engines differently? depends on what difference you are talking about, A tight LSA will make an engine rev quicker be more snappy but yes it will affect engines different, cubic in and the amount of duration has a big play too. A 106 LSA say in a 6 cylinder might not be as choppy as in a 8 ect..

 

http://www.crankshaftcoalition.com/w...o_choose_a_cam

 

I've done just about everything you can do to a car and have a good amount of experience, including motor builds, transmissions, axles, restorations, and conversions, BUT have VERY little experience with FI. I've read this entire thread and it's very informative, as I just got my first turbo car. Got a good deal on it since the motor was knocking.

These last few days have been a crash coarse for myself I do tend to agree with engineermike on his theories, as it seems to make the most sense.

I'd appreciate any thoughts or opinions on my project.... I'm building an LQ4 that I just picked up and am trying to decide on a cam shaft. I have the STS rear turbo 60mm on an f-body. I want reliability, low-maintenance, and just for the sound, a cam that has some lope (but not too crazy). I'm only wanting around 520-540rw, which I know can easily be done. I'm not, by any means, going to push it to the limit. So what I am asking is, "What is an example of a 'small' cam on the market that still has some mild to medium lope to it?" I want to have most of my power at low RPM's as I don't want to rev it to the moon to get max power. I want full boost to kick in at low RPM as possible, but still "some" lope.
I was thinking somewhere in the neighborhood of 220/230 w/ .550-.580 lift at the most, on a 115/116LSA

Any thoughts or suggestions are welcome...thanks!

Jason

BTW, I'm using the stock 317 heads w/ Comp 918 springs, and LS6 intake. Also, I am planning to get the heads re-surfaced just to get them perfectly flat and sealed up good, and get some good piston rings, as well as hone the cylinders. Thats about as far as I want to go with the build. I don't want to throw 1000s of dollars into it like I've done in the past

Would it be worthwhile to use the bigger return spring with the 60mm garrett turbo?

Thanks again!!!

 

That was a lot of good reading.

TDP, based on page 1 of this thread, the EPP cam sounds good. Also, dont waste your time decking the heads and replacing the rings on a low power turbo build. It will do just fine as is.

Im running a LS6 and man I miss that lope. Im also looking at replacing the cam before a 3 bar retune. I will report back with power numbers after ONLY changing the cam with the same boost levels.

 

Forgot to say TDP, if your talking about the wastegate spring, then yes, take it out and see what color stripe it is. Then swap in a stronger spring to make more boost but make sure your tuning supports it.

 

So bringing this one back, any thoughts on this cam and build?

390 LQ9, TFS 220 heads, 238/230 .637/.595 116LSA and we will be installed on a 110

Should this perform well on a single 91mm turbo car?

 

My ******* head hurts.