Roadster driver

Alright be clear Nissan used both offset and straight isolators. All the offset units are used with 44 and 50PHH carburetors, while some of the 44’s used straight isolators. All the 40’s that I looked at back in the day were straight or in alignment isolators. If I recall correctly they were buying the straight ones from a Volvo specialist and those were used on the old Volvo P1900’s that were equipped with Webers. After they moved Nissan Motorsports and Nissan headquarters to the east coast and the inventory ran out, they were never reordered. Dave

Those are the non staggered/offset studs, I’m pretty sure he does not sell the staggered stud ones. If you read they are staggered/offset and he made the manifold side studs m6 because of the Nissan R16 manifold that was drilled out of alignment and would cause problems with linkage binding. You will still need gaskets for them. Dave

There 2 styles, staggered studs and straight across studs. There are also gaskets required when installing the isolators. I have them available if you need them, warning they are pricey, about $95.00 each new. I also have good used ones as well. let me know if you want new ones or used ones. 925-890-8074 Dave

So is your car an sp311 or an spl311? Sp311 is a right hand driven car while the spl311 is a left hand driven car. It would make a difference on a few items in the interior kit. If you go to the 311s.org on the vendor list you can find one of the vendors that sell interior kits.

Hello ratsun forum, I am new to your forum and one of the two Mikuni PHH distributors still selling the PHH parts. I have an extensive inventory of Mikuni PHH parts and for those that need one free access to a printable copy of the Mikuni PHH tuning manual. I have been working with the Mikuni PHH carburetors since the 80’s so I have several parts that are NLA in stock and have made a number of reproduction parts over the years. You can reach me at dave@tuning4performance.com or www.Mikuni-PHH.com, to get a copy of the tuning manual go to the tech page and click on the pdf and download the Mikuni PHH manual. Dave

1970 is the last of the SPL/SP and the SRL/SR, the production line was stopped for several months while it was converted to build the new S30 Datsun 240Z model. It was an interesting year at the dealers as they were selling Z’s and roadster’s side by side that year. Dave