I'm looking for quite a few things for my engine rebuild, and I came across a kit by atkins rotary for the Series 4. What is the difference between the series 4 and 5 kits? Isn't it just the gaskets? I thought the short-blocks were the same ( Rotor Compression is different too ).

What's the difference between a Series 4 Basic rebuild kit, and a Series 5 Basic Rebuild kit?

 

I think your right, and it is just the gaskets. The internals are the same.

 

A couple of o-rings int eh gasket kit are different(OMP etc.) and the external gaskets are a bit different too.

BTW, there is only like 5dollars difference int eh price of the 2 gasket kits. I get the 86-8 NA for $140 and the 89-=91 NA for $145.

 

Thanks Hypntyz7, but the reason I ask is there's an e-bay auction with a kit, w/ everything I need to rebuild it. ( 2pc. Apex Seals, FD Corner Seal Springs, ETC. ) And It SHOULD go for under what Atkins charges to peice the same kit together.