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moelk

Input on power gains by swapping head.

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Question: Valves for my ”new” E88 EFI head  have 42mm intake and 35 exhaust valves. 

Intake valves will be swapped for bigger ones, but how big? 44, 45, 46mm?

What about the ex valves, keep the 35mm or go bigger?

Were to buy valves? Any recommendations/links to a good shop?

L28 + 1 mm, flattops (no valve cut outs) 535 lift cam.

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Here’s an E88 Efi Head with 46mm intake valves so it can be done. This head was/is on a 88mm bore L28. Don’t know if i really would need to go any bigger then 44mm. It’s not a race car i’m building but i don’t want to go to small either.08334783-0272-416E-96BD-AAA2C1BF006F.jpeg6F20D818-508C-49DE-A4D2-8905B3C7C823.jpeg

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IMHO - 44 for your engine size . If it was a bigger liter motor , or you were planning on spinning it way up high rpm , then maybe bigger valves . Can you go too big - I doubt it , so no time then the present to cover all the bases .

Quite sure you can buy valves from Rebello - and he would give some free advice since your buying 🙂

Edited by madkaw
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1 hour ago, moelk said:

I don't know why but one set has 50mm intake and 52mm exhaust. The other set has 50mm intake and 59mm exhaust.

In addition they do not look like they include the retainer clips. 

When the machinist did mine he knew from previous Datsun work that I need to get him new clips as well.

I got a brass set off eBay that included the retainer clips. He installed them with no problems.

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9 hours ago, moelk said:

Email Mr Mori Direct at Kameari.  He'll help guide you to what you need.

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