I noticed that the type-s is only sohc. Would it of made a difference if it would of had been dohc? Faster, etc., Just curious and any info would be appreciated. thanks

 

I think the TOHC(Triple Over Head Cam) head would have been the ticket. Besides you'd have more street cred being the first kid on your block with that many cams.

 

Just imagine this, the NSX with its 3.0L engine back in the days was able to obtain 270hp with DOHC VTEC (well along with other modifications), while the 3.2L is good for 290hp. With today's technologies, I am sure it would have more power, especially at the top end. Generally, DOHC is good for top end power, while SOHC is good for low end torque.

 

SOHC is also far cheaper to manufacture. Besides, Honda's SOHC engines tend to be quite competitive against other DOHCs.

 

...the introdution of cam phasing (iVTEC) on a DOHC 3.0-3.5L J-series could result in a serious bump in hp/lb-ft. Heck! Toss in IMA and the TL-S could conceivably have the most output in its class: horsepower, torque and fuel economy-wise. Unfortunately, it would also likely result in a bump up in price.

But as Ken indicated, the current layout is competetive with DOHC offerings from other makes.

 

i don't think anyone else caught this

 

LoL, i thought DOHC has one cam to drive the intake and other cam to drive the exhaust valve. There should never be a need for triple cams.

 

Yea it's a Vette and not a TL, but the 1990's Corvette ZR-1's had a four cam setup and that didn't produce the power the current Vette's have with only one cam.

 

The third cam is to generate rotational force for the supercharger...duh

 

LOL!

Agree that a DOHC setup allows a bit more freedom in tuning and the ability for broader torque curves and bit more top end power however SOHC motors have come a long way and has one large advantage:

- Less rotating mass generally means less drivetrain loss and greater fuel efficiency


Ford actually had cam phasing on the SOHC F-150 a few years ago which suprises me that honda hasn't introduced it yet.

 

We have dual SOHC, so it's like having DOHC.

 

As long as the electrical boost fluid is in rotational phase with the supercharger.

 

Its a none issue if you've got more then 3 quads per sector, but even then with the hydrasolator on modern cars there is nothing to worry about, but if your not careful it may throw your CEL, technology

 

I used to wish/say the same thing about the CL.

 

DOCH's are good for low end power as well, just look at a Mustang or northstar's dyno graph to see how much torque they put out down low. It's all in what the motor is built to do. Honda built the NSX with high revving power, while ford and GM builds their motors for more low to midrange power. And soch's can be built the same way, even though you really dont see soch's spinning too high from the factory. Like i said before, it's all on how they are built. Drivetrain selection can make an engine a timid daily hauler or an untamed beast.

 

I was just talking about in general, DOHC is better for high end power, while SOHC is better for low end torque. Of course there are always exceptions. Just like how RWD is supposed to have better handling than FWD, but it isn't true all the time, as proven by various Type R cars and TL Type S. Besides, the mustang has a lot of displacement to make that much torque too!

 

Just because it would be DOHC wouldn't necessarily make it faster...but it could make it more powerful. The C32 Legend generated 230hp with SOHC non VTEC, while the C32 NSX generated 290hp with DOHC and VTEC, so in this case DOHC and VTEC was good for 60 extra hp and a dime or so of torque. The J series is considered by H/A to be more technologically advanced than the C, so theoretically if the J series 3.2 TL/CL engine were DOHC, it would probably generate at least 290HP. Of course this would only be bolstered by I-VTEC with intake and exhaust cam profiles as opposed to just exhaust that the current J series has. I speculate the J32 with I VTEC and DOHC would be around 325hp/270tq (M3 numbers/displacement, please don't tell me Acura can't build a production race worthy engine as good as BMW). The J35 with the same? Maybe something like 375hp/315tq...hence the hype for a V8 or V10 powered new NSX. I bet with a 4.0L V10 we could see numbers like 550HP/450TQ.

BTW DOHC's are just higher capacity, I think they effect peak output numbers and powerband but not automatically low end tq. The biggest effect on low end tq comes with displacement and FI obviously.

H/A would do themselves good by refining their AT drivetrains - the parasitic drivetrain loss is ridiculous and seeing that most H/A customers choose AT's this seems smart. What good will it do if the new TL has say, 330HP if it has 20+% drivetrain loss?

 

Not for nothing, but the mustang GT has a small V-8, 4.6. But i get what you are saying.

 

I'm in the computer lab, and this made me bust out laughing. Thanks itimmy, for making me look like a sped for laughing at your post.

 

How much more hp do you think the TL could handle with its FWD drivetrain? 300 bhp? Understeer FTL.

 

ever seen the trd aurion?

understeer is negated by the LSD..

 

Lets maybe go with, "understeer is reduced by the LSD"

 

http://video.aol.com/video-detail/us...f-4/4289308937
from that video..I still see quite a bit of oversteering going on..I think they might want to focus on reducing oversteer..rather than the opposite...

 

 

The reason it overstreered was becuase the tires where cold.

 

yes that is true, but isn't that enough already? I believe understeer is purposely built in to suspension design nowadays, doesn't matter if it is FF, FR, MR, RR or 4WD. And it seems to me that once the tires on that TL were warmed up, it became neutral steer.

 

Meh.... an LS7 only has 1 cam and it has 500 horses. Oversteer is not necessarily a bad thing in FWD cars as long as its not overdone.

 

why are you comparing OHV in an OHC topic ?