porting a head DYI, need some direction |
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porting a head DYI, need some direction |
02loftsmoor |
Aug 20 2014, 06:03 PM
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#1
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Senior Member Group: Members Posts: 577 Joined: 26-June 11 From: Ft. Worth TX Member No.: 13,243 Region Association: Southwest Region |
I'm following a guideline that Ray posted a while back on using 1.7 heads, opening up the exhaust valve to a 1.8 exhaust valve..and the port the hell out of the exhaust port. relocate the spark plug.
I need some guidance , pictures, measurements anything that could help me DYI port these heads. and I will say please and thank you, and will buy a beverage of your choice. (IMG:style_emoticons/default/beerchug.gif) |
Mark Henry |
Aug 22 2014, 06:06 AM
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#2
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
(IMG:style_emoticons/default/rolleyes.gif) Peeps love to make things seem harder than they really are, a mild P&P is not rocket science. The big part is having a die grinder thin enough, long enough and the correct tools.
Unless you plan to totally alter the port shape you don't need a flowbench. Don't worry about the intake they are plenty big enough. Don't go crazy removing material and do not remove the guide bosses. The exhaust just clean up the flash and polish smooth. Experience and common sense helps. BTW did the seats and P&P on my 44X38mm 2.0 heads for my engine, I've also used HAM heads (forget number, but one below the top) on almost the exact same engine combo. By the seat of my pants I could see no difference in power from to two builds. On a dyno I seriously doubt any more than a 10hp difference between the two engines and that could be chocked-up to just the different exhaust systems. Also FYI the biggest single improvement you can make is the exhaust system. |
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