Years ago Datsun Comp made oversize race valves for the R-engine- Those are OOP. We just CNC'd a run of them here in GA. USA production from top Quality SS blanks. Hardened tips. Available now in these sizes:
Intakes 44mm (+2mm) 145/set
https://www.datsunrestorationproducts.c ... -of-4-1600
Exhaust Choice of 33 or 34mm (+1 or 2mm) 145/set
https://www.datsunrestorationproducts.c ... -of-4-1600
33's are an excellent fit, just requires moderate seat and porting skills.
34's require expert seat and porting work, so you need a good shop to prep for those. (Highly recommended)
All 3 sizes are 11/32" stems for standard guides, so guide changes are not necessary.
Ask us about small stem, ultra-light-weight-performance valve sets!
Note these are not budget, off-brand, or unknown China-Taiwan valves- all top shelf, custom made-in-USA pieces.
Top Quality, CNC turning center production German Silicon-bronze guides also available (twice the life of iron guides) for ALL Roadster engines.
https://www.datsunrestorationproducts.c ... set-8-1600
R-16 Competition/Stroker Valves & Guides
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R-16 Competition/Stroker Valves & Guides
LT/JT
https://www.datsunrestorationproducts.com/
Only the very BEST parts for your Datsun- 10000's of items in stock
New, Used and Reproduction!
https://www.datsunrestorationproducts.com/
Only the very BEST parts for your Datsun- 10000's of items in stock
New, Used and Reproduction!