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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





What i use to polish cylinder heads and intake manifolds
Join me on Facebook! www.facebook.com/omgitsmrmack Just showing your guys how we go about polishing and getting the beautiful finishes after its all said and done.. this method takes some skill.. some might say i make it look easy.. at 14000rpm the grinder i use is not a joke and has hurt people when they dont use it properly.. when the paper unloads on a long rod it tends to bend the rod at a 90 degree angle and if the user freaks out and does not hold it away and let it slow down then they end up with a nice big sliced up arm or mid section.. i myself have bent a few in my time and lucky for my i have a quick reflex and manage to hold it away without hurting myself..





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





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





SR20DET Rebuild Part 2
The strip down finishes and the rebuild starts.





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.





Chevy LT-1 Cylinder Head Full Porting Stage IV
This is the full blown Stage IV Max Street porting of the LT-1 Cross-Flow Cylinder Head. Part One....In this we cover the begining to end of unshrouding and polishing the combustion chambers. Thanks to Tom Kish for the use of his heads and the extra time he allowed for me to film and perform these mods, and his permission to display his heads and work performed. This procedure removed 3cc of material, and blended the chambers to discourage detonation. This is part one of three of mods to turn a stock 170cc LT-1 heads into Edelbrock, AFR killers. The valve size remains the stock 1.94 and 1.50 sizes. To follow more go to www.headbytes.com 615-212-7168





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 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.





NISSAN SR20DE ENGINE 早回し組み付け 1時間50分を約4分にしてみました。
日産シルビアなどに搭載されている、SR20DEエンジンの組 み付けを早回しで4分に収めてみました。基本的にSR20DET ンジンも、オイルジェット(ピストンクーラー)の違い らいでほぼ同じです。そのうちきちっと編集してヤフ クに出します。





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





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





Rebuilt SR20DET.mp4





Cutting and Grinding Valve Seats
Anthony & Raj @ DIYautotech taking you through the steps on the Rotler SG-8 on how to properly cut valve seats on your cylinder heads. If you have any questions or concerns, please leave a comment below. We'll see you next time!





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.





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