Tr224/112 vs Tr224/114
Thread Starter
Launching!
Joined: Jun 2002
Posts: 279
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From: Windsor,Ct 06095
Tr224/112 vs Tr224/114 I consider myself reasonably smart and Ive been reading all of the posts,but does 2 degrees of lobe separation angle make that big of a difference with these cams? I notice the A4 guys go with the 114lsa and the M6 guys go with the 112lsa. I dont wanna seem uninformed or stupid but does this have something to do with programming between the cars or the converter.Thanks for helping me clear this up.
Teching In
Joined: Mar 2002
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From: bradley beach nj
Re: Tr224/112 vs Tr224/114 al tuners recommend he 112 fr m6 cars so the powerband is lower, the 114 they recommend for the auto cars. the 2 degrees will make a differencein the powerband for sure.. just think if u had a 226 degree at 50 duration cam and how much choppier the idle would be. im sure someone can explain it better than i can
TECH Fanatic
Joined: Nov 2001
Posts: 1,695
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From: Raleigh, NC
Re: Tr224/112 vs Tr224/114 Yes, the 112LSA will peak a little sooner but I think the reason they reccomed a 114 for A4 cars is because of idle quality. It is harder to get an A4 car to idle with a choppy 112 LSA cam.
TECH Enthusiast
Joined: Jan 2002
Posts: 597
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From: Orange Park, FL
Re: Tr224/112 vs Tr224/114 A 114 will idle much better in an A4 than a 112 will. The 112 will work fine though with tuning in an A4. I have the 114 in my A4 and love it. It has a smooth idle but not alot of lope to it. If you want radical thump then I wouldnt advise the 114. I shift it around 6600 and its brought me to a best of 12.07 @ 113 on Nittos, lowered, 3.73's, LS6 intake, shorties, and SY3500. I dont think you can go wrong with either grind though. I have read very few complaints on either of them.
On The Tree
Joined: Sep 2002
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From: Lakewood, OH and Grand Marais, MI
Re: Tr224/112 vs Tr224/114 I agree completely with the other guys regarding idle quality. The greater overlap due to the tighter LSA lowers manifold vacuum causing a rougher idle. 2 degrees in LSA make a big difference.
Other specs being equal, a cam with a tighter LSA (e.g. 112 vs. 114) in the 220 degree range in intake duration will give you higher peak torque and more torque throughout the 2000-5000 RPM midrange than a cam with a wider LSA. HP theoretically falls off a bit faster past peak.
Essentially your powerband is peakier, comeing on stronger, faster and tapering off sooner.
A tigher LSA is great on an M6 because you can really feel when you're "on the cam" and in your sweet spot. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Other specs being equal, a cam with a tighter LSA (e.g. 112 vs. 114) in the 220 degree range in intake duration will give you higher peak torque and more torque throughout the 2000-5000 RPM midrange than a cam with a wider LSA. HP theoretically falls off a bit faster past peak.
Essentially your powerband is peakier, comeing on stronger, faster and tapering off sooner.
A tigher LSA is great on an M6 because you can really feel when you're "on the cam" and in your sweet spot. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
