What size motor and what are your total cam specs.?

How is the drivability at idle, coming up to stop lites, cold starts, etc.

I am leaning towards the 112 lsa vs. 114lsa, for my S1 cam in my new MTI 427 (Being built now)for my 98 A4 vette, but don't want to be two footing it on cold starts, and especially don't want to die out on the street at stops, etc.

THanks,

MTI 427 C5 Roadster

 

I'll know by early February... I'm installing a 112LSA cam with a set of stage II heads in my A4... we'll see.

 

I've done alot of research on this subject as I also have an A4, and the conclusion that i've come to is that with proper programming, there is no problem putting a 112 in an A4. This May I will be putting in the TR227 reverse split with a 112LSA. I know its a ways off, but I will definitely post my reactions after its in.

 

244/244/112, Yank 4600...

Car idles at 1000 rpms, would idle well with an M6 at 900 rpms.. It lopes pretty good and it lopes harder than my old 242/242//114 cam.

 

I have run three 112 cams in my 346/LS1 A4.

222/222 112
224/224 112
230/227 112

I have never had cold start, idle or stop light "problems".

Good luck.

 

What is the main difference between a 112 lsa and 114 lsa. Is it just idle and little more rpm?

 

I installed a 112 LSA cam on an A4 a couple of months ago. It started right up, found idle, and was just fine. We made no modifications to the throttle body or had to change the idle. It is 100% fine. That car ran high 11's after the swap.

I've had absolutely no problems whatsoever with 112 LSA cams in the cars I've worked on. On the other hand, I've heard nightmares of people unable to get their cars to idle afterwards, however, I have about 6 cars I've done 112 LSA cams on that have had no problems at all, so I'm inclined to say you'll be just fine.

 

Have you run the 112s on LS1 stroker motors also? I would assume b/c of my bigger cubes (427) that a 112 lsa would work even better for me vs 346 cid.

What do you think, my cam specs. are fairly aggressive for a hyd. cam (244/244, .612lift and a 112lsa)going into my LQ4 427. My large stall PT 4000, may also help i hear b/c of extra vacum created (similar to a stick car)i was told by an SBC engine builder.

Thanks,

MTI 427 Roadster

 

I am certainly leaning towards the 112lsa but here is an important question for me to get answered.

Its my understanding that the 114 would make more power than the 112 in the higher rpm band. Therefore, my logic tells me that the car would produce higher HP numbers on a dyno vs. 112.

I assume that the 112 is the better choice for drag racing b/c it will make a little more power under the peak horsepower number and we all know that is where drag races are really one.

Is my reasoning correct here, that the 114 would make a larger peak HP number but the 112 should edge it out (all else being equal) in a drag race, b/c of the slightly more power being made under the peak HP number?

Thanks for a reply to these last few questions, which should be the last determining factor in my decision to go with a 112lsa.

MTI 427 C5 Roadster

 

There is a fine line, when a 112 gets to the point where you have to 2 step it. I dont know what the point is, but I have the same problem. I'm running a 232/236 112 XE-R.

The cam may mellow out in the new motor (additioanl 50 cubes). I'll let you know.

I would reccomend that you get a 114 if you want to minimize your problems. The difference in power is minimal, most likely the only thing that you would notice is slightly less rumble. Good luck.

 

It's all in the tuning, it might take you 30 minutes to get the idle tune down.

All too often I see a car that flies but can't idle worth squat.

Guys, I ran 236/240//111 cam in a 346 3 years ago and it idled fine.

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by MTI 427 C5 Roadster:
<strong> Its my understanding that the 114 would make more power than the 112 in the higher rpm band. Therefore, my logic tells me that the car would produce higher HP numbers on a dyno vs. 112.

Is my reasoning correct here, that the 114 would make a larger peak HP number but the 112 should edge it out (all else being equal) in a drag race, b/c of the slightly more power being made under the peak HP number?
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Ask these questions to 20 guys, & you'll get 20 conflicting answers. This is my opinion, & worth what you paid for it:

The 112 LSA will make slightly more power (TQ) throughout the mid-range AND make more peak HP. Yes, it will also lose a little HP in the upper-RPM range (past peak HP). It will also lose a little TQ below 2K RPMs.

The operative word here is "slightly". The main difference between the two LSA's is idle quality, and lope, not power.

 

My 238/246/110 should be here any day now!!!With some tuning you can get anything to run good.Now I just have to descide between 6.0 heads or LS6.Might be going FI if I can sell the bike come spring!!!

 

I have a 112 in my a4 and have no problems with it. Drives like stock. I did have the idle raised but im sure MTI is gonna do that for you also. My cam is a 226 226 585 585 XE-R in a 346

ALbert

 

I have an F1 cam with a A4. This thing is a ***** when it is cold and first started up. After I put it in drive and take off, the car runs almost like stock. It can be fixed, I just need to get a new TB, I drilled the hole too big back when I didn't have LS1 edit.


Scott

 

I have the X1 on 112 with a A4. With tuning and my idle set at 900 she is sweet. The biggest problem I have is hot starts(01 and 02`s). I wish I could lower my idle, this cam is bad-***. I love the sound. She pulls hard to 6400. With all I have-A4,stall,12 bolt, heavy 17x11 and timing at 23 degrees and rich I still pulled the numbers in my Sig. I got 135 RWHP out of a 100 wet shot too. She rocks! Good Luck!

 

i have a 230/230 on a 111 LSA in my A4. idle is rough <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> but still livable.