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How to port and polish a 500hp Nissan SR20DET head part3..

Also parts 1/2..In this final vid on port and polishing the 500 horsepowered SR20DET PART 1 http://www.youtube.com/watch?v=FhhyOdFyAcE PART 2 http://www.youtube.com/watch?v=av8yTxTm9hE


 


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How to Port and polish a 500hp Nissan SR20DET Head Part2
*****3 PARTS***** I show you a port job on a SR20DET S13 Nissan head,plus some good infomation for you on porting these heads and on tooling tips... PART 1 http://www.youtube.com/watch?v=FhhyOdFyAcE PART 3 http://www.youtube.com/watch?v=Rdc4HdO0ZXE





Volvo Engine head porting/ matching exhaust
Gasket matching my Exhaust port on the head. Nothing spectacular and quite boring to watch but quite tricky to do. The point on this "process" is to align correctly the Exhaust port with the Exhaust manifold to allow gas to flow without turbulence. it can exit faster and let more fresh air come inside the cylinder. In the same time the shape of this port is important : the very light conical shape is a good and reliable design for Exhaust. the point is to grind very far to have a tight curve and not only grind to match.





Porting an aluminum intake manifold, basics of porting and polishing.mpg
Porting and Polishing Basics. Porting on an aluminum intake. A few principles and techniques for porting. The therory and approach discussed can be applied to porting most intakes and porting and polishing in general. Abrasives, carbide burrs, surface finish, porting tools and tips. Equipment from CC Specialty Tools (ccspecialtytool.com)





GMC 270 Big Valve Conversion.mp4
This GMC head gets a new set of oversize valves custom made by Costa Mesa R&D Automotive Machine, watch John Edwards as he goes through the steps to make it happen. (949) 631-6376





Cylinder Head 201 - Radius Cut Valve Job
This video covers the complete valve job process that your machinist might perform. If the 100 series videos didn't help you identify and correct a problem with your cylinder head, then this is the next step. This video is brought to you with permission from my machinist in full 1080HD, and covers cleaning up the head inside and out, preparation and setting up a radius cutter, cutting all 16 valve seats, valve grinding, and spans 3.5 hours of actual work in under 30 minutes. There's nothing like this anywhere else on YouTube. THANK YOU BALLOS PRECISION MACHINE. Thank you for the professional explanation and execution of a job excellently-done, and un-precedented access to your facilities. A valve job is done by re-grinding or replacing valves, and then having new seats cut to match the faces of the valves you're using. There are several different machines that might be utilized to achieve this result, but the process is the same no matter how it's done. There are seat cutters that utilize cutting stones. There are valve seat cutters with 3 separate angles installed 120° out-of-phase, and there are single cutters with all 3 angles (radius cutter) that cut with one blade in one pass. The machine demonstrated here is a Sunnen VGS-20 Radius Cutter. This machine (now out of production) produces a gradual curved seat that's superior to the shape of a traditional 3-angle seat. While a radius cutter does contain the 30, 45 and 60 degree angles, it does so without leaving any sharp edges between their faces. My valve selection includes Supertech 1mm oversized nitride-coated stainless steel undercut and back-cut intake valves, and 1mm oversized Inconel back-cut Exhaust valves. Inconel is a high-temperature alloy utilized in marine and forced-induction performance engines that can handle more abuse than steel can without melting. The other characteristics of the valves which are discussed typically yield bigger gains in airflow than simply using a bigger hole and a bigger valve. Why I did this to a perfectly-good cylinder head: I changed cams. Because the valves were previously recessed during another valve job 9 years ago, my valve installed height was increased and this raised the operating positions of my rocker arms. My new camshaft selection dictates using the stock valve install height. The only solutions to this valve install height problem are to either replace the valve seats, or install oversized valves. I opted for the latter.





How to port and polish a turbo exhaust housing
I'll fill this in later. The "book" I typed in this field before didn't save. Come back later if you want to read more about the theories behind porting and polishing.





Throttle Body Port and Polish on a 2006 Chrysler 300
Throttle Body Port and Polish on a 2006 Chrysler 300. Turned out well, it was my first one ever done so it should go way easier next time. Car drove perfect, no issues at all. I didn't notice a horsepower Boost but the throttle response is quicker for sure.





Cutting Excess Guide from ProComp 210 SBC Head, custom Porting Combustion Chambers 4
Part Four of Port modificatins on ProComp 210cc aluminum SBC heads. Guide over hang from installation and correcting the combustion chambers to unshroud the spark plug is a big deal on these heads. China castings leave a lot to be desired, but still with all the work you must do it is still the bargin of the year and is a force to be reckond with when "bang per buck" is needed. The base of the spark plug should not be exposed in the chamber, and any valve guide "Overhang" will obstruck flow and create fuel "sheer" which seperates vapor to droplets that wont burn. Most Big Name companies will not take time to detial these issues as production cost prohibit these mods, so have your local machine shop take apart your heads and look for these problems before you bolt them on your prize engine. www.headbytes.com 615-212-7168





How to port and polish high performance v8 heads,tips,tricks and trade secrets exposed
*******CHECK OUT PART 2 ***** http://www.youtube.com/watch?v=sZDlZxqRVJw COMBUSTION CHAMBERS http://www.youtube.com/watch?v=D63jgJs95gY DEGREE CAMSHAFTS http://www.youtube.com/watch?v=azLX1pi2oVE I look at porting and polishing high performance heads,I been building engines for 30 years, most of that time in research and development,I explain in real simple terms air flows and velocities,these 308ci General Motors Holden heads have been transformed over 70 hours,I show you all the do's and dont's,keep a lookout for the rest of the rebuild vids, as we head into final assembly,especially dialing in camshaft's,compression ratio's and everything else that makes internal combustion engines cranky,Aussie Heads and Race Engines-One Man One Shop





S15 SR20 How to fit k-line valve guides
A quick Vid on fitting k-line valve guides to Sr20det head





How to Port and Polish a 500hp Nissan SR20DET Head,5 angle Valve Seat job...
******3 PARTS****** The start of a performance job on a Nissan SR20DET 500 horsepowered Cylinder Head... Part 2 http://www.youtube.com/watch?v=av8yTxTm9hE Part 3 http://www.youtube.com/watch?v=Rdc4HdO0ZXE





SR20DET 800hp Dyno Run
800hp pull on Clinton's SR20DET, runing 29psi with a Holset HX52 turbo and Link G4 Extreme ECU and tuned by Phil at NZEFI, Engine built by Car Aid Engine Developments in Christchurch New Zealand.





redtop S13 SR20DET port & polish head
i started a simple Port & Polish job on a S13 redtop SR20DET head.. we will be reusing the stock valves.. thus extra care was taken NOT to touch the Valve seats.. ALL material removal was done with small bits of sand paper by Hand.. intake runners were only smoothed over a little Combustion chamber was Polished to BLING





Nissan SR20-DET Block Resurfacing
John Edwards discusses some of the reasons why aluminum blocks require resurfacing and how it's done on the Sunnen HBS-1300 @ Costa Mesa R&D Automotive Machine 949.631.6376 www.engine-machining.com





DIY: Porting & Polishing a Throttle Body
Video tutorial on how to port and polish a vehicle's throttle body. In order to do this procedure, you must remove the throttle body from the engine so you can probably polish and port the throttle body and the material shavings do not enter the engine. This isn't much of a horsepower increase if any, but it does help with throttle response. Do not remove any material from around where the throttle plate touches in the bore either. Also when doing this procedure, I would recommend purchasing a new throttle body gasket so you won't have any vacuum leaks once reinstalling. Make sure you don't take off too much material either where it will affect the structural integrity of the throttle body. When doing this type of work, make sure you wear safety glasses for your own person protection. This particular tutorial was done on a 1997 BMW 540i. Procedure: -remove the throttle body from the vehicle -clean any oily build-up inside of the throttle body -remove the butterfly from the throttle body, most are held in with 2 screws that go into the shaft -if you can, also remove the shaft and linkage (some shafts are pressed into bearings, other are not) -if you can't remove the shaft, no big deal you just have to work around it -tape around the shaft or the hole where the shaft was so no metal shavings get into that area and cause premature wear for the bushings or bearings -depending on the finish of the throttle body's bore, there may be edges which you can to smooth out -in order to smooth out those edges, you can use grinding stones for either a drill or rotary tool such as a Dremel -when using a grinding stone, it's best to use WD-40 penetrating oil with it so the aluminum material doesn't plug up the stone and it'll no longer cut away any material -once you are satisfied with the sharper edges being ground down, you can down move onto sanding drums for the rotary tool -you can also flare out the bore where the air enters slightly so it has a smoother air flow into the throttle body -you can even port match the throttle body to the intake if the throttle body is smaller -if you don't have access to a rotary tool and sanding drums, you can also use flap wheel drum sanders that can be used on a drill -the flap wheel drum sanders are available in a variety of grits such as 40, 50, 60, 80, 120, 180, 240, and 320 -when using the flap wheel drum sander, you can add water to help with finer sanding as to keep the dust down -if the surface isn't too porous such as what is shown in the video, start out with a finer grit like 120 and move your way up -once you have reached the highest grit in a flap wheel drum sander, you can now do some sanding by hand with 400 grit and add some water for lubrication -once satisfied with your product, you can now move up to an abrasive like Scotch Brite -depending on the color, will depending on how course the abrasive pad material is -I started out with green and then moved onto the red pad for the finest compound -you can also use water with this too to help finer sanding and to keep the dust down -again once you are satisfied, you can now move onto a metal polishing compound -the metal polishing compound I would recommend is Eagle One -apply the polishing compound paste and rub until highly mirrored finish (multiple coats can be applied to achieve a higher polished surface -once you are done with the bore, you can now move onto the throttle plate -most throttle plates are smooth to begin with so you can skip directly to the Scotch Brite stage using the same procedure and finally move onto the metal polishing compound -once done, you are ready to reassemble the throttle body -make sure you peen the thread of the screws on the other side to ensure they don't come out or apply Lock Tight thread sealant -install new throttle body gasket along with throttle body to your vehicle Thank you to all those who watch my videos and support my content. Don't forget to subscribe to my channel for future tutorial videos and like my video if you found it helpful. New videos are always being uploaded every week! Please LIKE my Facebook page @ http://www.facebook.com/pages/4Diyers/106898752724865 or FOLLOW me on Twitter @ https://twitter.com/4DIYers © 4DIYers 2013 All Rights Reserved No part of this video or any of its contents may be reproduced, copied, modified or adapted, without the prior written consent of the author.





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