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#21 peter mc

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Posted 09 January 2011 - 03:29 PM

just a pic or to have made more mods to the port after testing ,just the chambers to do now and clean the ports up a bit after final air flo testing

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#22 peter mc

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Posted 10 January 2011 - 07:28 PM

piston to go with the p90 . Brings the comp up to12.1

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#23 Sirpent

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Posted 10 January 2011 - 07:45 PM

Nice work Peter, was looking for you at the BBQ on Friday night.

Dont forget, you have a 2.6 rebuild waiting, a deals a deal........LOL

By the way that nose is going into production soon.

Cheers

John

#24 peter mc

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Posted 10 January 2011 - 07:52 PM

good to hear sirpent we need to get together soon and get that 26 sorted

#25 Gareth. J.

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Posted 10 January 2011 - 08:23 PM

My bottom end is assembled, still waiting on the headers ??? I' running flat tops and they had to deck the block, so I have about .25mm positive deck height. Should be fine by the looks of those bad boys Peter  :o

#26 peter mc

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Posted 10 January 2011 - 08:26 PM

that is fine mate 10th is no problem

#27 luvemfast

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Posted 10 January 2011 - 08:41 PM

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

#28 peter mc

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Posted 15 January 2011 - 08:47 PM

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

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#29 Gareth. J.

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Posted 15 January 2011 - 11:52 PM

It's a shame I'm going to hide this beautiful piece in the engine, but if I have to do it I will  ;D
Would you use new Nissan turbo head bolts or ARP head studs Peter?

#30 peter mc

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Posted 16 January 2011 - 07:56 AM

i like the arp option mate they work grate :)

#31 Lurch ™

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Posted 28 January 2011 - 07:31 PM

More Pics from Peter:

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#32 peter mc

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Posted 28 January 2011 - 09:21 PM

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

#33 peter mc

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Posted 01 February 2011 - 06:38 PM

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

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#34 Gareth. J.

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Posted 18 February 2011 - 05:04 PM

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  8)

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#35 peter mc

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Posted 10 March 2011 - 08:41 PM

its done  ;D

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#36 Gareth. J.

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Posted 10 March 2011 - 08:55 PM

Woohoo, horsepower here I come  :o

#37 peter mc

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Posted 10 March 2011 - 09:04 PM

over 100 hours of labour in this head hope you like it

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#38 600Z

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Posted 14 April 2015 - 02:16 PM

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.





#39 d3c0y

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Posted 14 April 2015 - 04:27 PM

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.

#40 Lurch ™

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Posted 14 April 2015 - 06:45 PM

Pete's ports aren't too bad though, he built me a 350hp L28.


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