Vtec questions
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From: Naw'linz
ah yes, i gotcha, i wasn't thinking. i'm thinking of hte new civics. oops. well still and VTEC wouldn't be felt on a SOHC car, right? i've never really felt one like i did on the K20A2 or the B series. the 00 civic ex was never really performance minded anyways. the GSR is highly perofrmance minded. eh well i gotcha.
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Originally posted by mc_intergra
YES, that's correct (almost). The GSR has two points of engagement for vtec. When it kicks in varies becuase of diffrent things such as throttle position and a few other minor things i can't excatly remember right now. But usually the first stage kicks in at 4400 rpm, then the secondaries open up at 6100 or somewhere around there. But yes, there is two stage vtec on a GSR.
:stupid: , why don't you learn what youre talkin about before you respond.
YES, that's correct (almost). The GSR has two points of engagement for vtec. When it kicks in varies becuase of diffrent things such as throttle position and a few other minor things i can't excatly remember right now. But usually the first stage kicks in at 4400 rpm, then the secondaries open up at 6100 or somewhere around there. But yes, there is two stage vtec on a GSR.
:stupid: , why don't you learn what youre talkin about before you respond.
...and there isnt a dual stage vtec in the b18c1.....the only one i know of is the d15b.
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Originally posted by mc_intergra
this is the new vtec (ivtec) which came out in 2002 i believe, with the rsx type s and the new civic si, but there is still a diffrence in those two. The "old vtec" was still something you could feel on engines that were perfomance minded, such as integra's and preludes and i think civic si's, but not sure about the si's. But the new si's are fuel effiecent minded, so there ivtec is not that noticable, but the rsx is. So even with the new ivtec is variable in being noticable or not. Get what i'm saying or am I just being confusing? Oh well, I'm sure somebody else will explain it better.
this is the new vtec (ivtec) which came out in 2002 i believe, with the rsx type s and the new civic si, but there is still a diffrence in those two. The "old vtec" was still something you could feel on engines that were perfomance minded, such as integra's and preludes and i think civic si's, but not sure about the si's. But the new si's are fuel effiecent minded, so there ivtec is not that noticable, but the rsx is. So even with the new ivtec is variable in being noticable or not. Get what i'm saying or am I just being confusing? Oh well, I'm sure somebody else will explain it better.
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From: Atlanta
oh im sorry mc integra..you know everything
and there isnt a dual stage vtec in the b18c1.....
you are uberly
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Joined: Nov 2002
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From: Naw'linz
there sure is a dual stage VTEC in the B18C.
VTEC Engagement-Intake: 4400rpm, Exhaust: 5800rpm
Induction System Programmed Fuel Injection (PGM-FI) with dual-stage intake manifold
Using a unique arrangement of three cam lobes and three corresponding rocker arms for each pair of valves, the VTEC system can alter not just valve lift, but valve timing as well in response to engine load and driver demand. VTEC operates on intake as well as exhaust valves.
The crossover point between nominal valve lift and high valve lift occurs at 4400 rpm. As the engine continues to rev beyond that point, another system comes into operation - the dual stage intake manifold. At 5800 rpm, a second intake runner in the dual stage manifold opens to fully exploit the additional breathing potential of VTEC. Thanks to these two complementary systems, the GS-R engine has an almost flat torque curve from 2500 rpm up to 7200 rpm.
WELL I THINK I:VE AWNSERED THE QUESTION!
END!
VTEC Engagement-Intake: 4400rpm, Exhaust: 5800rpm
Induction System Programmed Fuel Injection (PGM-FI) with dual-stage intake manifold
Using a unique arrangement of three cam lobes and three corresponding rocker arms for each pair of valves, the VTEC system can alter not just valve lift, but valve timing as well in response to engine load and driver demand. VTEC operates on intake as well as exhaust valves.
The crossover point between nominal valve lift and high valve lift occurs at 4400 rpm. As the engine continues to rev beyond that point, another system comes into operation - the dual stage intake manifold. At 5800 rpm, a second intake runner in the dual stage manifold opens to fully exploit the additional breathing potential of VTEC. Thanks to these two complementary systems, the GS-R engine has an almost flat torque curve from 2500 rpm up to 7200 rpm.
WELL I THINK I:VE AWNSERED THE QUESTION!
END!
