BUT you gotta order from rock auto UK...no listing for tipo in America
http://www.rockauto.co.uk/
I read a PBS article stating that these motors show little benefit of larger exh. valves
And they were wrong/incorrect/masking the fact that larger exhaust valves weren't really available in those days. That article is very old.
These engines can indeed benefit from bigger exhaust valves.
Cheers,
Rob
I tried getting creative with rock auto searches, found the 39.5mm intakes, but the same listing (1995 Tipo) shows exhaust valves which are 31mm. 1.8L Tipo shows exh. Valve dia. of 36.1mm, but 3mm too short, and I'm not sure of keeper design. There is a second listing for the 1.6L exhaust valves, but no specs. Did you guys get all 8 valves? Part numbers? One of our vendors sells big valve heads, but not valves, and another sells only intakes. Is it wise to instal 39.5mm intakes and retain stock (33mm) exhaust valves? I've got a regrind 236 cam and headers.
A little birdie once told me that Nissan or "datson" valves were almost perfect for this swap... If memory serves it was from a 280. but Cant remember. Anyone hear of this?