According to my parts catalog the CVVT is going to be in all Elantra's after November 1st, 2002 production dates and in all Tiburons after August 20th, 2002 production dates. One other big change is the CVVT engines are going back to a MAF sensor.

I had an Elantra show up yesterday but it was built in September. We have a whole bunch more Elantras showing up in 2 weeks. Maybe this new batch will be the CVVT cars.

So remember I have not actually seen the change in person but my parts catalog is usually quite accurate. I can't wait to drive one.

 

isnt it only like a 6hp increase?

 

So only two and a half years of MAP Betas in the Elantra and a year in the TIBs (will the CVVT Tibs be labeled 2004s?) This is gonna make things confusing for newbies in pointing out how their engine is governed.. especially with a intra-model year change... I still haven't seen the production date changes for the gear synchros in the 1st and 2nd changes. I heard there were two changes made and they were both intra-model year.

 

now, when you say cvvt, you mean "continuously variable valve timing?" i'm just making sure you didn't mean cvt, or "continuously variably transmission." if it's the former, cvvt, then i wonder what would be required to swap the old betas to cvvt? new head, cam (obviously), valves (maybe?), ecu. hell, i think i'd rather just have big 'ol lumpy cams in there. that way, i'd have a nice rough idle to let everyone know not to f**k with me, and have the benefit of DECREASED fuel efficiency throughout the whole fuel map.

[ January 08, 2003, 11:14 PM: Message edited by: turbulence ]

 

No, hes does mean CVVT

continuously variable valve timing.

And I think it is only on the Intake or Exhaust, forget which one.

It would not be worth the trouble for the 6hp. You can get my by just installing a GT CAM.

 

it is INTAKE only.

 

I don't know for sure yet. My catalog may not have updated info for head and cam stuff yet since nothing different is listed for those items. Once one hits the lot we will be looking it over much closer. If need be we will pull the valve cover off to see what's underneath.

 

vtec does nothing but make a funny noise... Shaddoh is right... its not worth the extra 6whp, so dont get your panties wet

[ January 09, 2003, 11:19 AM: Message edited by: JAWS 021 ]

 

Rob over at HP got a copy of a technical diagram.
(props to Rob)


They use a "clutched" gear system between the exhaust and Intake cam. the exhaust cam is still single belt driven, thus it CAN NOT be "variable". The Clutched gears between the intake and exhaust cam vary the timing of the INTAKE cam only.

 

VTEC actually does do more than make a funny noise; the cam lobe duration, timing and lift all change when the secondary cam profile kicks in.

A 2000-2001 Honda Civic Si (the one that my buddy Joel had back in the day) would dyno almost a full 20 horsepower shy when the VTEC solenoid was unplugged. It basically was worthless after about 6K on the tach.

Hyundai's CVVT system is much less advanced, and as such will net very little (as you can already see)