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Measuring and duplicating port angles


edgehanger

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http://www.harborfreight.com/multi-use-rule-gauge-65339.html So is there some kind of technique or special angle finder to measuring the roof angle of the ports? Been searching the net and can't seem to find any specific how to's. I can measure the boost port angle with a protractor/angle finder with no problem because it is steep enough but, I haven't seen an angle finder that would get in the transfers enough to make an accurate measurement.  Any insight would be greatly appreciated. . 

 

 

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No. Im trying to raise my port timings and keep the exact same roof angles of the stock ports. As well as start to play with different roof angles and match all the port roofs so the angles are identical in the cylinders. Any suggestions?

You would not really wanna duplicate the stock angles for a couple reasons. First being that right off the bat, stock porting is obsolete and can be improved upon in any and every way not just heights and durations. The second reason being that if you in theory design the angles so that things flow a certain way toward the combustion chamber. Now if those ports are aimed a certain direction and you change those port heights and keep the angle the same it will be aimed toward the combustion chamber in a different way as it has not moved in relation to the ports. I couldn't tell you if your plan puts the angles of the ports in a better location or not though. But I doubt it will be all it's cracked up to be in your head.
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Yea I get that @tricked. I think the stock port angles are aimed in ideal directions as far scavenging but, there is much room for improvement. I just didn't wanna raise the windows and have the directions all out of wack flowing in 8 different directions and creating all kinds of short circuits. I want to make both cylinders as identical as possible.

 

 

For some reason the quotes aren't showing up :confused:

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for hell sakes. you just need something to bend into the port chanell. doesnt matter much what it is, hell some solder could probly work. look around the garage and see if you have something that can bend and hold its shape. some of you guys really over complicate shit. then most any protractor type of imstrument will suffice for measuring the angle

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the few times i have made some big changes i have actually just used the porting tool angles and based my flows from that.  any major measuring i have had to do was done the same way..  with paper clip and measure from there..  just need to know where to point the charge and how its going to swirl through to the head design.  

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