[r4wd]

A interesting article on how they work.
http://www.canadiandriver.com/2010/06/16/auto-tech-variable-valve-timing.htm

 

[hondaguy]

Very cool. I've always been in awe about Honda's VTEC technology. I remember in the old days when we were crazy about modding our Preludes, we would buy these VTEC programming devices to manipulate when VTEC would kick in.

 

[Hulk]

Would VTEC even be a benefit for an SUV like the Crosstour?

 

[CCT]

Would VTEC even be a benefit for an SUV like the Crosstour?

I would say so. It optimizes performance no matter what it's in.
Power, mpg's, smog would all benefit from such a feature.

What I'm not sure of is if our C/T's "i-VTEC" engines have variable valve timing on both the exhaust and intake valves.

Anyone? Ryan? Haven't had a chance to explore yet.

What's really interesting is the variable displacement feature of the engine.

Apparently it can run on as few as 3 cylinders!
C.

C.

 

[edubfromktown]

Does the CT engine (271-hp, 3.5-Liter, 24-Valve, SOHC i-VTEC V-6) use a timing chain? One of the sales people I spoke to when I was haggling a price for my car mentioned something about it but I've not been able to find much info on the Internet.

 

[CCT]

Does the CT engine (271-hp, 3.5-Liter, 24-Valve, SOHC i-VTEC V-6) use a timing chain? One of the sales people I spoke to when I was haggling a price for my car mentioned something about it but I've not been able to find much info on the Internet.

Not sure but I hope so.
My '06 3.0 V6 Accord had belt drive for the valves and of course had a more limited lifespan.
When I find out, I'll post but it should say in the maintenance book whether the belt is changeable if indeed we have one.

C.

 

[r4wd]

Belt ort Chain

According to my Honda dealer the V/6 has a belt and the 4 banger a chain. So true or false so suggest ask your dealer so we can come up with a positive.

 

[edubfromktown]

Online all I could come up with said the 4 cyl (k-series) uses a chain and the 6 cyl (j-series) uses a belt I'd still like to verify from someone firsthand for grins.

Here's a good read on belts vs. chains:

http://www.automedia.com/Belt_Drives_Vs_Timing_Chains/pht20020901bd/1

 

[CCT]

Online all I could come up with said the 4 cyl (k-series) uses a chain and the 6 cyl (j-series) uses a belt I'd still like to verify from someone firsthand for grins.

Here's a good read on belts vs. chains:

http://www.automedia.com/Belt_Drives_Vs_Timing_Chains/pht20020901bd/1

Good read.....and seems that belt drive has its good attributes and uses.
For me tho, a good old fashioned chain that would probably outlast me is the way to go on this ride where longevity and realiability is key.

The '06 Accord needed the belt to be changed at about 100k and was a pita and costly. Chain on this application would be so much simpler and cheaper.

C.

I'll try to find out from the dealer which one we have on the 3.5 engine.

 

[r4wd]

Belt or Chain

It's a belt, Maintenance Minder Symbol 4 see page 331 in the OM. If my CT should ever get to that point (100,000km) I would request a new water pump as well.

 

[CCT]

It's a belt, Maintenance Minder Symbol 4 see page 331 in the OM. If my CT should ever get to that point (100,000km) I would request a new water pump as well.

My dealer suggests the water pump also since it's so much handier to do while changing the belt. To do the pump by itself would be very expensive.

C.

 

[edubfromktown]

Sounds reasonable to replace the water pump at the same time. I too come from old school timing chain land (and direct gear action on air cooled Corvairs too). I didn't go for the water pump on my Mitsu Diamante when I had the timing belt replaced at ~85K miles (25K miles after recommended) and haven't had any problems thus far. I kept that car around for my 16-year old to bash, I mean drive

 

[CC816]

One of the service guys told me that the cars with service minders went to about 160000km before changing the timming belt the board list the price of that job at just under 1000$

 

[CCT]

Wow that is expensive. A chain will last much longer, I'm sure, and be less likely to stretch, degrade, or break. That scenario could grenade the valves and pistons if it were an 'interference' engine...... which would mean complete engine replacement. (not to mention lack of sleep.)

 

[Xaque]

Couldn't resist.

 

[pgarci01]

LMAO! I remember that pic