TIM LUTZ Posted July 23, 2010 Report Share Posted July 23, 2010 Thought I'd start a new thread. Porting in progress and going well. Raising the transfers 1mm and the exhaust 1.5mm I have been reading a lot about staggering the opening of the transfer ports( mains open 1st, then secondary and boost last) This is suppose to widen the power band. So I was thinking about leaving the boost port at stock height and just cleaning it up. Any thoughts???? Quote Link to comment Share on other sites More sharing options...
AKheathen Posted July 23, 2010 Report Share Posted July 23, 2010 yah, clean it up, but keep it steep, and widen it a little. that's what i would do. Quote Link to comment Share on other sites More sharing options...
SLORYDER Posted July 23, 2010 Report Share Posted July 23, 2010 (edited) Yeah from what i gather the staggered design works well. Are you planning on doing the worm holes? Edited July 23, 2010 by SLORYDER Quote Link to comment Share on other sites More sharing options...
TIM LUTZ Posted July 23, 2010 Author Report Share Posted July 23, 2010 No worm holes this time. Want to see how it works with stock carbs first and then I'm going to try a set of OKO 30mm. Going to try to rout a tool tonight out of 3/4" clear plactic. A 2" wide x 4" long bar with a hole cut in it. I'll slot one side to the hole and cross bolt it. This will allow me to clamp my angle hand piece in this tool, set the depth, lay it on the deck and get all my transfers the same height..... I hope. Quote Link to comment Share on other sites More sharing options...
mopar1rules Posted July 24, 2010 Report Share Posted July 24, 2010 if it were me, i would raise the rear boost port, so it ends up being 1mm lower than the main transfers and then have the secondary transfers, open .5mm after main. Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted July 24, 2010 Report Share Posted July 24, 2010 I also stagger my ports, boost port being the highest 1mm or more depending on my set up or intended use.I have noticed a big midrange diffrence.I have done it on alot of test pieces but also tested same set of jugs both ways.The transfer tunnels on a banshee motor need some work,alot of power needs to be supported Quote Link to comment Share on other sites More sharing options...
PassionRE Posted July 24, 2010 Report Share Posted July 24, 2010 Thought I'd start a new thread. Porting in progress and going well. Raising the transfers 1mm and the exhaust 1.5mm I have been reading a lot about staggering the opening of the transfer ports( mains open 1st, then secondary and boost last) This is suppose to widen the power band. So I was thinking about leaving the boost port at stock height and just cleaning it up. Any thoughts???? Try to keep rear boost .5mm lower than the rear transfers with th rest of your plans...Jim Quote Link to comment Share on other sites More sharing options...
stroking Posted July 25, 2010 Report Share Posted July 25, 2010 Try to keep rear boost .5mm lower than the rear transfers with th rest of your plans...Jim what is the rear boost port? are we talking about a triple ported cylinder here ? any pic of all these ports with names ? pictures would really help us learners understand whats being talked about. Quote Link to comment Share on other sites More sharing options...
TIM LUTZ Posted July 25, 2010 Author Report Share Posted July 25, 2010 what is the rear boost port? are we talking about a triple ported cylinder here ? any pic of all these ports with names ? pictures would really help us learners understand whats being talked about. Quote Link to comment Share on other sites More sharing options...
TIM LUTZ Posted July 25, 2010 Author Report Share Posted July 25, 2010 Going to try to rout a tool tonight out of 3/4" clear plactic. A 2" wide x 4" long bar with a hole cut in it. I'll slot one side to the hole and cross bolt it. This will allow me to clamp my angle hand piece in this tool, set the depth, lay it on the deck and get all my transfers the same height..... I hope. WOW this thing works great. Got both exhaust ports and all my transfers exactly the same heights from deck. Using a flame carbide so I just went in a little on the rear transfers and the angle of the carbide tip matched the angle of the port roof, Just blend in the aluminum to the new port height. Also cut a donut from 3/4" cast acrylic and stuck a 320 DA disc on it and cut out the center. 20 seconds later I have a new base gasket surface. This porting stuff is kind of fun. Quote Link to comment Share on other sites More sharing options...
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