peter mc Posted January 10, 2011 Author Posted January 10, 2011 that is fine mate 10th is no problem Quote
luvemfast Posted January 10, 2011 Posted January 10, 2011 that is fine mate 10th is no problem What is it with you engine builders talking ye old yankee all the time? Bloody imperial Very pretty though Quote
peter mc Posted January 15, 2011 Author Posted January 15, 2011 this is the valve and spring combo the inlet valve is 46mm and ex 36 in ss the spring is made by coswerth and the retainer is a SW motorsports Quote
Riceburner Posted January 15, 2011 Posted January 15, 2011 It's a shame I'm going to hide this beautiful piece in the engine, but if I have to do it I will Would you use new Nissan turbo head bolts or ARP head studs Peter? Quote
peter mc Posted January 15, 2011 Author Posted January 15, 2011 i like the arp option mate they work grate Quote
peter mc Posted January 28, 2011 Author Posted January 28, 2011 working on the chambers now .blending the seat into the chamber and making them all the same size . next week i will have it flow tested and will post the results Quote
peter mc Posted February 1, 2011 Author Posted February 1, 2011 just back from the flow bench good and bad the inlet was as good as i was hoping 230 at 550th at 28in .but the ex not as good as i would like , but with a bit of help from Andrew at blackwell engines the port came back. i still have lot to learn about the exh port it is very easy to stuff up .but with a bit of work on the short turn the numbers came up 155cfm @ 550 160cfm at 600 much thanks to Andrew you are a pro Quote
Riceburner Posted February 18, 2011 Posted February 18, 2011 Dropped off my new Ignition Dragon Stainless headers for Peter to port match to this head. Here's the pics of them as they are now, will post more after the work is done Quote
peter mc Posted March 10, 2011 Author Posted March 10, 2011 over 100 hours of labour in this head hope you like it Quote
600Z Posted April 14, 2015 Posted April 14, 2015 Just wondering are you going to be running injection or carbs? Just that in the past I have sandblasted the intake ports to help prevent the over fueling when you back off into a corner then give it a boot coming out. With the walls polished the fuel wets the walls and when you open it up the air flow rips the fuel off and you get a hesitation, but with them lightly sand blasted the surface has turbulence on it which keeps the fuel from wetting the walls and thus no hesitation from over fueling when you open it back up. Worked for me very well. Also if you have to remove any more material from the chambers its not a bad idea to un-shroud the outside of the chambers next to the valves and even under cut them under the gasket line which also improves the flow. Quote
d3c0y Posted April 14, 2015 Posted April 14, 2015 Epic thread dig. There is a full build on the car in the member project section. It's running 6 Mikuni flat slides from memory. Pete's ports aren't too bad though, he built me a 360hp L28. Quote
C.A.R. Posted April 14, 2015 Posted April 14, 2015 Pete's ports aren't too bad though, he built me a 350hp L28. /Edit Quote
d3c0y Posted April 14, 2015 Posted April 14, 2015 It was modified further after the dyno run you are referring to Lurch. Cooling, exhaust and tune were all changed. Quote
PZG302 Posted April 15, 2015 Posted April 15, 2015 And a good dyno operator will ask how much horsepower do you want today..... Quote
d3c0y Posted April 15, 2015 Posted April 15, 2015 Cant quote flow bench numbers then or performance figures of the car because i've basically not driven it haha. Quote
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