Damn Phragle, there you go blowin' my mind again. Are you talking about a +4 crank AND a +5mm rod? Obviously the +5 rod doesn't add to the final volume. What is the benefit? (I know you probably just said it but I missed it...)
Another engine
- Thread starter OConnor Racing
- Start date
I spoke to Mike at CPI and decided to run that pipe. Seems like he really knows his stuff. He was able to recomend exhaust port durations / RPM off the top of his head. I set up a dealer account with him while I had him on the phone. No race gas for me. Most of you guys want to run pump fuel so that's what I test with. I'm not running the long rod on this one (yet) but I ordered one yesterday for the engine I'm pulling out on Friday. I'll try it on that one.
it does add to the final volume in the crankcase but because the longer rod changes the angle of the rod mainly it gives it as ken called it a mechanical advantage. does make sence i guess. im tunned in!
shouldn't some stuffer blocks help out with the crank case volume problem? I love readin these treads where i get to learn something. or at least try to understand what is being said.
so vitos +3 comes with stuffer blocks and +4 doesnt? were do you get stuffer blocks and what keeps them in place? are they attatched to the rotating assembly?
what the hell??????????????? some mass confusion here. stuffer blocks are attached to the crank. they are made of palstic that is molded into the crank and held in place by a couple of holes that are drilled in the crank on the vitos. i can't speak for any others bc i've never seen them. i don't know if there is a +4 w/ stuffer blocks out there. stuffers have nothing to do with the head..... if you look at a stock crank there are big open areas on either side of the bottom end rod bearing. the stuffer blocks fill that area to decrease the crank volume. I would post pics but i have to buy a camera. I fired my old lady and it belonged to her
couple of questions on this... i can take out the bridge in my intake to no ill effect? and i can add a longer rod without changing porting? yes and no will suffice... or you can give details I:I
so would the +3 be a more balanced motor than the +4 with and advantage of the lower crankcase volume because of the stuffer blocks. i wonder...
i heard the differnce between the 2 is small and heard people say that the +4 anit worth the money to get the cases trenched sometimes
