washdup Posted January 14, 2009 Report Share Posted January 14, 2009 Go Ryan! Your knowledge base continues to grow . . . . Link to comment Share on other sites More sharing options...
EricF Posted January 14, 2009 Report Share Posted January 14, 2009 You need to cut out the "Y" then it will be the same as a "japan" manifold. You'd do better to spend that effort on am "R" manifold, though.I would suggest that the Y should be left alone, maybe knife-edged? It directs the gases, this is very important... Otherwise they have to collide into one another at high speeds/pressure and are just forced out of the inlet because it's the only way to go.The area on the outside of the outlet there is very easily opened up, and should give the most dramatic results of any of these modifications if you match that outlet to the inlet of whatever turbine housing you use. Be it a ported straight/conical housing, a Garrett turbine housing, or the angled with the huge inlet from the factory. It is a good idea to open the runners up near the ports though, don't mistake what I am saying for discounting that..As far as actual power numbers, I kind of doubt it would all amount to much. But if you couple it with a really free flowing turbine housing and exhaust, it would not hurt... Link to comment Share on other sites More sharing options...
the commissar! Posted January 14, 2009 Report Share Posted January 14, 2009 I would suggest that the Y should be left alone, maybe knife-edged? It directs the gases, this is very important... Otherwise they have to collide into one another at high speeds/pressure and are just forced out of the inlet because it's the only way to go.The area on the outside of the outlet there is very easily opened up, and should give the most dramatic results of any of these modifications if you match that outlet to the inlet of whatever turbine housing you use. Be it a ported straight/conical housing, a Garrett turbine housing, or the angled with the huge inlet from the factory. It is a good idea to open the runners up near the ports though, don't mistake what I am saying for discounting that..As far as actual power numbers, I kind of doubt it would all amount to much. But if you couple it with a really free flowing turbine housing and exhaust, it would not hurt...A well designed manifold should allow the pulses of gasses to merge instead of collide. This in turn should provide smoother, more consistent spool-up of the turbine as engine RPM's increase. Opening the Y will enhance that. Hence the newer/better designed R manifold...with the Y cut back.Doing this mod to an older mani is of questionable value due to the different runner design, but as stated by the OP, being done for practice. It's all good. Cheers! Link to comment Share on other sites More sharing options...
JCviggen Posted January 14, 2009 Report Share Posted January 14, 2009 A well designed manifold should allow the pulses of gasses to merge instead of collide. This in turn should provide smoother, more consistent spool-up of the turbine as engine RPM's increase. Opening the Y will enhance that. Hence the newer/better designed R manifold...with the Y cut back.These manifolds are the way they are out of cost and limited space considerations. They are by no means a great design...the runners are very unequal length so you will always have some pulses running into each other. Link to comment Share on other sites More sharing options...
nolanator Posted January 15, 2009 Author Report Share Posted January 15, 2009 i looked at the S60R design and decided to compromise between the two bits of advice i got (remove the "Y" and keep the "Y") i am going to try for a similar "cut back" design. not only do i think it will be most beneficial, but it'll be a challenge to do. the portions of the "Y" however aren't equal thirds so i'll have my work cut out for me to make it look good and hopefully perform wellYou're not P&P this POS manifold, you're gasket matchingWhy would you put this POS manifold back on your car?Regrinding cams and grinding on this chunk of steel that's ready to crack are two different activitiesI really think you're doing the right thing, but on the wrong thing.You don't need to "practice" just take your time on a keeper.Hint: you couldn't sell itgasket matching is porting my friend. w/e don't waste my time with your overly negative criticism. Link to comment Share on other sites More sharing options...
Rsterns Posted January 15, 2009 Report Share Posted January 15, 2009 i looked at the S60R design and decided to compromise between the two bits of advice i got (remove the "Y" and keep the "Y") i am going to try for a similar "cut back" design. not only do i think it will be most beneficial, but it'll be a challenge to do. the portions of the "Y" however aren't equal thirds so i'll have my work cut out for me to make it look good and hopefully perform wellKeep in mind that they are not equal thirds partially due to 5 ports in and 3 ports out. You might want to try rigging up a smoke source and a hair dryer, allowing the intake of the dryer to suck in the smoke as you aim it at a particular port you are working on. You can watch how the smoke exits, compare, and make your porting decisions based on some visual data. Link to comment Share on other sites More sharing options...
mune237 Posted January 15, 2009 Report Share Posted January 15, 2009 gasket matching is porting my friend. w/e don't waste my time with your overly negative criticism.you should drop your attitude, then re-read my postI was replying to your post #6Besides you asked for feedback Link to comment Share on other sites More sharing options...
nolanator Posted January 15, 2009 Author Report Share Posted January 15, 2009 you should drop your attitude, then re-read my postI was replying to your post #6Besides you asked for feedbackre-read still dont care bye Link to comment Share on other sites More sharing options...
randomdude Posted January 15, 2009 Report Share Posted January 15, 2009 Keep in mind that they are not equal thirds partially due to 5 ports in and 3 ports out. You might want to try rigging up a smoke source and a hair dryer, allowing the intake of the dryer to suck in the smoke as you aim it at a particular port you are working on. You can watch how the smoke exits, compare, and make your porting decisions based on some visual data.very neat and probably beneficial idea! as mentioned knife edging and simply cutting back the Y, along with your gasket match P&P is probably going to make for the best you could hope to get out of this manifold. keep us updated with progress! Link to comment Share on other sites More sharing options...
mune237 Posted January 15, 2009 Report Share Posted January 15, 2009 re-read still dont care byeno prob, GL with your build Link to comment Share on other sites More sharing options...
nolanator Posted January 16, 2009 Author Report Share Posted January 16, 2009 i took a look at the S60R manifold and got a few ideas from other members as to what to do. some said remove the Y, others said keep it, and Eric said knife edge it, so i took a little bit of input from everyone and came up with this...let me know what you thinkstarting point...obviously after a few hours with a dremel and some stones.i lowered the profile of each runner, rounded each one, and knife edged them. i still have to go over the "Y" with a 120 grit wheel and then polish it, but this should give everyone a rough idea of what's going on.ps. that little crack is right on the surface and should come out with a little more resurfacing. Link to comment Share on other sites More sharing options...
bum2kev Posted January 16, 2009 Report Share Posted January 16, 2009 ill take some pics of my ported s60r mani for you to get a good idea. Link to comment Share on other sites More sharing options...
EricF Posted January 16, 2009 Report Share Posted January 16, 2009 i took a look at the S60R manifold and got a few ideas from other members as to what to do. some said remove the Y, others said keep it, and Eric said knife edge it, so i took a little bit of input from everyone and came up with this...let me know what you thinkstarting point...obviously after a few hours with a dremel and some stones.i lowered the profile of each runner, rounded each one, and knife edged them. i still have to go over the "Y" with a 120 grit wheel and then polish it, but this should give everyone a rough idea of what's going on.ps. that little crack is right on the surface and should come out with a little more resurfacing.Looks good. Be sure you open up the outside of the outlet there to match whatever turbine housing you use.. Link to comment Share on other sites More sharing options...
nolanator Posted January 16, 2009 Author Report Share Posted January 16, 2009 thanks! yea i haven't even touched the outside yet. i've been working on the "Y" this whole time. that's up next though. lets hypothetically suppose i wanted to use this manifold sometime, would be wise of me to cryo treat it before using it since i have compromised the integrity of the structure or is it good to go how it is? Link to comment Share on other sites More sharing options...
bum2kev Posted January 16, 2009 Report Share Posted January 16, 2009 since it has cracks in it, im not sure if you want to spend the money to get it cryo treated. someone else should prob chime in though. Link to comment Share on other sites More sharing options...
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