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peter mc

Os24B1

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It's a great build, but doesn't interest me on the same level, the O.S Giken head is much more interesting because it's a cylinder head from that period.

 

 

Yes good luck to them ..im taking the os to a new level ..its going injection 55mm itb drysump 13.1 comp hand made race pipes 90mm stroke monster only one thing in mind building the most outrageous NA L motor

 

I love the fact that you're always challenging yourself to step it up to the next level Peter it's great to see.

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Working on the block this week. .making room for the 90mm stroke ..next week im flying over to japan to see os gikens engine man and get a few parts ..things are getting serious. .going to be a dream trip

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Well im flying over to japan next week to spend a few days with the head engine man at OS and then spend a day with the engine man at star road .so lots of pics coming up then the hard work starts .first up flow testing and then making the exhaust pipes .no small task .

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Have a great trip Pete, really looking forward to seeing your updates.

 

Travel Safe.

 

Cheers

 

PB

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Great to hear that you having a good time.

How much excess baggage will you be bringing back ;)

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So first day back i had to know how well the os24b1 head flows stock and then with a good port to clean up a few problems.

Well first time on the bench it was quite clear the port was very small .and went in to choke and stoped flowing at 350 thou lift but still flowing 376hp .

Next i spent several hours doing the port and fixing the seat area. Well i was very surprised. 440hp flow first test ..i think 450hp flow is not going to be tuff to find

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Many hours to go .and have to make a new set of valves .5 mm up in size to make best use of the seats .so its very possible theres 450hp flow .that will be one cracker L motor

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Haha yes mossy i was having a great time .

I have a big job ahead of me getting this head to flow the air i want .but its there.i have the x section to get it to rev to 9000 on the 3.4L just need the itb to be 55mm and the pipes to go with it .

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The video was of me in a hako at full nosie having a ball ..i will put it up soon i did get to drive all of the cars in that video even the toyota. What a cracker race car that is

Edited by peter mc

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Lots getting done block prep work is well on the way . And ports are looking fantastic. Port flow is at 305 cfm through the intake. Steve at efi hardware is making a custom made set of itb for me .they are great to deal with .and clive cams are building a set of custom made billets for the new now very high flowing head ..its going to be very special

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