fal308 wrote:What do you guys think of cross-bolted mains. (or even the LS1s [?] 6 bolt mains?
They are the best. All aftermarket Nascar and what I have seen in F-1 or V-8 endurance engines are all cross bolted. I think all Nitromethane blocks are cross bolted too Barc..Every auto manufacturer usually comes up with a 'gadget' thats well... sweet! This is a Ford EDIS-8 ignition system. This is all thats required too produce a 65k volt spark at the plugs, it will,(I hope), interface with the MegaSquirt PCM,(Computer), with a SAW signal,(Spark angle word), from the trigger wheel minus one tooth, it sends one signal, the SAW to the MS. The MS sends a PIP,(Profile Ignition Pickup), back to the EDIS. The EDIS calibrates the spark plus advance to the coil pack and fires it. Without the trigger wheel signal it automatically advances the timing 10 degress all the time so this can be used for "limp home" mode. With the trigger wheel signal the VR sensor sends the SAW signal to the MS PCM. It's pretty much fail proof and very simple. It's technically called a waste spark system because it fires two different spark plugs at the same time. On B/RB MoPar the firing order would be 18436572 correct? So the companion cylinders firing order would be those pistons on the exhaust cycle that recieve the spark. I figured it to be 1&6 are companions then 8&5 4&7 and finally 3&2 pretty slick huh! Since the companion cylinder recieving the wasted spark is on an exhaust stroke there is very little pressure in that cylinder with the exhaust valve open. This has no effect on the engines running operation.