Newbie needs help with tow vehicle
I don't own a travel trailer (yet), but first things first....a truck to pull it. I'm looking at getting a smaller trailer, maybe something in the Jayco Jay Feather line (GVWR about 5-5.5k). I liv...
Forum Discussion
RPreeb wrote:Yak wrote:
The chains are stretching. Every one of the phaser jobs I've seen has had good documented maintenance
You still don't have any idea how hard they were run. Maintenance can only do so much. Give some people 365 horses and they have to drive it like they were related to Richard Petty. I don't plan on racing my 3.5 EB at Daytona or doing burnouts at the Winternationals.
I agree with everything you said Ben. It is a tough balancing act. Make the chains to big and you start killing off mileage and throttle response; make them too small and you have a mess like Ford is in now.
I'm going belt drive on my supercharged engine next year. I think you know what happens to a supercharged engine full of boost and fuel when the valve timing gets out of wack. :E
Ford say's in their TSP that cam timing can be off as much as 5 degrees. 5 degrees on cam timing is a HUGE amount to have! 2 degrees is a lot!
RPeeb, you don't have to drive your truck like Richard Petty to wear out the first gen cam chains. Plain and simple, they were designed wrong or should I say weak (take your pick). Much like the first gen injectors on the LB7 Duramax or the first gen CP4 pumps on the Ford or GM diesels.
Cold starts is a WAY bigger problem on the chains than any spirited driving could ever do to them. When you have a chain that is a mile long most of it stays out of the oil. After sitting for a while the oil drains off of the chains wear points and is almost dry. Every time you start that engine the chain has to run around a while before it gets lubed. Until every link gets in the oil it is wearing.
That's why Fords little stunt of towing around a race track at WOT didn't mean much to people in the know. In fact, it was one of the easiest things they could have done to an engine. Ford knew this; but most people did not.
There is a reason Ford is rumored to come out with a completely new design Ecoboost in the near future. Must be a big one because designing a new engine from scratch is VERY expensive. Automotive companies aren't in the business of spending money needlessly.
