2015年12月24日 · For DOHC heads, the cams can be tied together with a short chain, then have a separate chain/belt which drives the cams, or can have just a single chain/belt which runs the whole thing. DOHC engines usually have a configuration of 2-intake and 2-exhaust valves per cylinder, but in some cases like the configuration Volkswagen-Audi Group (VAG ...

Usually there are marks on the crankshaft and camshaft(s). The crankshaft mark will match a specific point, mark or even have a hole with a pin to locate the timing point precisely on the front cover for example and the camshaft(s) will also have a hole for a …

2019年12月18日 · TDC on DOHC but with cams removed. Ask Question Asked 5 years, 1 month ago. Modified 5 years, 1 month ago.

Whereas in DOHC (dual overhead cam) setups you'll see two cams directly driving the valves: DOHC valvetrains give the highest performance of conventional setups, and have the lowest inertia and so highest rev range, but they are somewhat more difficult to service due to the fact you need to keep the timing of the two camshafts in sync as well ...

2016年4月5日 · With a DOHC setup you have 4 (or 5 sometimes) valves which does three things to improve efficiency: the total volume of two smaller ports is greater than one big port, smaller ports have greater airflow velocity and can fill cylinder more effectively and coming back to valve train weight; two small valves are lighter and require again lighter ...

2019年7月17日 · It's either in time, or it isn't. You can rotate cams on a non-interference engine in any direction, all you want.

I have a 2001 Mercury Sable (24V DOHC V6) that has been having problems with its vacuum system. I live in Florida where the average temperature lately has been in the 80s. I've been experiencing a very rough idle for roughly a month now that occasionally would stall the car.

2013年6月12日 · DOHC, or dual overhead camshaft, allows even freer gas flow so can provide even higher power output. OHC is easier to maintain, as more components tend to be external to the engine block, so they can be adjusted and maintained, as well as checked for problems. These days there are very few OHV engines anyway.

I have a fleet of Taurus and Mystique vehicles. Oil dye and a black light are the best way to inspect these, drive it a few miles, but be careful to study the dye carefully and make sure it has fresh leaked oil with it to confirm a leak.

2022年5月24日 · 4.6L DOHC Ticking Noise. Ask Question Asked 2 years, 9 months ago. Modified 2 years, 9 months ago.