DennisRB30 Member 49 Member For: 21y 6m 9d Posted 05/02/07 02:13 AM Author Share Posted 05/02/07 02:13 AM Seems as though its a bit of a secret to how big the gate needs to be ported.I ported mine for an 82% increase, but am yet to fit the flapper. Can anyone tell me if the 82% increase is big enough? I can go to 100% if I need to. So if the gurus don't want to give away their secreted can they please tell my if 82% increase is big enough? Link to comment Share on other sites More sharing options...
Cubes Member 38 Member For: 19y 7m 10d Gender: Male Posted 09/02/07 08:04 AM Share Posted 09/02/07 08:04 AM *subscribes* Link to comment Share on other sites More sharing options...
FSIX Member 566 Member For: 19y 2m 14d Posted 09/02/07 09:41 AM Share Posted 09/02/07 09:41 AM Seems as though its a bit of a secret to how big the gate needs to be ported.I ported mine for an 82% increase, but am yet to fit the flapper. Can anyone tell me if the 82% increase is big enough? I can go to 100% if I need to. So if the gurus don't want to give away their secreted can they please tell my if 82% increase is big enough?←I am no expert,having a look at mine recently as long as your new flapper still covers the hole should be ok. Link to comment Share on other sites More sharing options...
XR06T Silver Donating Members 4,146 Member For: 19y 6m 16d Gender: Male Posted 12/02/07 12:27 AM Share Posted 12/02/07 12:27 AM *subscribes*←unfortunatly email notifaction doesnt work Link to comment Share on other sites More sharing options...
DennisRB30 Member 49 Member For: 21y 6m 9d Posted 12/02/07 08:11 AM Author Share Posted 12/02/07 08:11 AM You get around don't you Cubes? Anyhow the stock flapper falls straight through the new port. I got a bigger one made up. You can't really go too much bigger without upgrading it. I am get to connect it all up. The arm also needed mods as the new port is off centre to the old port. Link to comment Share on other sites More sharing options...
FSIX Member 566 Member For: 19y 2m 14d Posted 13/02/07 02:32 PM Share Posted 13/02/07 02:32 PM sorry I assumed that you were already using a bigger flapper when you said you were going to port. Link to comment Share on other sites More sharing options...
Headsex Donating Members 2,528 Member For: 19y 4m 28d Gender: Male Location: Melb Posted 18/02/07 07:20 AM Share Posted 18/02/07 07:20 AM Wastegate Port pictures Link to comment Share on other sites More sharing options...
DennisRB30 Member 49 Member For: 21y 6m 9d Posted 18/02/07 11:12 AM Author Share Posted 18/02/07 11:12 AM Wastegate Port pictures←Finally some info on the proper port job! Thanks mate.Looks quite similar to what I done. They done a 36mm flap and I done a 38mm flap. My new port is 34mm not sure on theirs. I think mine would be a couple of mm bigger. It also appears they had to offset the hole. They made is small enough and offset the hole in such a way that they didn't need to machine a new seat like I did. That was the sort of info I wanted to save a lot of f*cking around making a new seat etc.Oh well, mine sure work even better since its a bit bigger. Link to comment Share on other sites More sharing options...
4ST-XR6 Member 58 Member For: 18y 1m 27d Posted 20/02/07 08:27 AM Share Posted 20/02/07 08:27 AM I got my waste gate ported apporx 6mm larger than the standard circumference and fitted an 11.5psi actuator. The difference it made is fantastic. Obviously the lowest boost I can run now is 1.5 psi but I can actually use my eboost to create a boost profile now. Before in high gears and high rpm the boost was impossible to control properly. It cost me $50 for the machine work and $117 for the actuator. Some other members also had there flapper valve change and had similar success with that and porting the waste gate as well.←Thanks mate! Please tell me as much info as you can guys.My boost control is shocking ATM and I get creep up past 1 bar in the top end, and I haven't even fixed my 3" exhaust which has been damaged and is probably restricted to 2.5 inches. How big is your exhaust? Its very difficult to set a flat boost curve how it is. I can't see how you got it ported out 6mm without a new flap valve though. It appears as though there is only about 2 or 3mm overlap with the stock flap.←I think he said that the circumference was increased by 6mm, if you say there was 2-3mm overlap I imagine that would be plenty because even banking on the smaller option the diameter of the bore is still approx 4mm greater than the flapper, and increase of that diameter could increase the circumference by approx 6mm (circumference of a circle= pie(3.14)xdiameter. keep the updates comming both of you, Im gonna have to do the same mod soon. Link to comment Share on other sites More sharing options...
DennisRB30 Member 49 Member For: 21y 6m 9d Posted 20/02/07 11:20 AM Author Share Posted 20/02/07 11:20 AM Circumference! I missed that. What an odd way to describe the size increase. I guess if the guy doing the work says the new hole is only 1.9mm wider it sounds pretty pathetic that's still about a 15% increase in size though. Mine is like 65% bigger Its pretty much finished.http://www.math.com/students/calculators/s...rcle-solver.htm Link to comment Share on other sites More sharing options...
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