I had a feeling that my VIAS was broken yet again... so instead of doing another JB job I decided to take the power rod completely out. Like other threads have mentioned the the top end of the car >5k felt amazing... the rest of the power band was blah. I definitely hit the rev limiter a bunch of times, the RPM's take of like a rocket after 5k.

What I wanted to know was is there any mods I can do to get back _some_ of the torque I lost in the low and mid range... or is there anything I can do the power rod itself to make it flow better (like thinning out the flat sections)? I really like having the extra top end but don't think I want to give up _all_ that low end. I don't have piggyback/standalone ecu yet so _tuning_ is out of the question for now. Any suggestions?

 

Without any software enhancements, you're SOL on adding any more midrange.

 

At what rpm does the vias on the 3.5 gets on? 4000rpm?

 

. . . .

 

has anyone ground/sanded down the power rod so that the _valve_ parts are thinner?

 

Not worth the trouble/effort IMO. Just take it out.

 

it is out.... but until I get my megasquirt working I need to do something to regain my lowend... so I was thinking about dremmeling the valves thinner

 

Did I just said something stupid?

 

Well I got my wisdom teeth taken out friday morning and since I didnt have much else to do while I thinned out my power rod. I left one of the valves the regular thickness in this picture for comparison sake. I haven't decided if its going in yet cause not having the power rod in at all does make for a lot of fun! Anyway, that plastic was hard as hell and took a while to dremmel down. It flexes a little when you try to bend it but it shouldn't. ever experience that type of force in the engine. I might mill it down a little more.

 

what about cutting out the valve parts completly and epoxying/jb weld thin rectangles of sheet metal in there... that would have to flow almost as good as not having the rod in there at all