Hello All

My questions are for an E15 Nissan Engine
What are the dimensions for the mains and big end journal size
What is the Gudgeon pin size
What is the length of the con rod
What boost is standard for these engines at factory

Thanks
Datmado

The E15ET was the only boosted one. It was 7 psi boost, so it didn't need an intercooler

E10, E13, E15 and E16 were never boosted as far as I know

E15ET used low compression of 7.4:1 (old-school turbo thinking). By comparison most of the new turbo car use high compression like Honda K20C2 turbo engine uses factory ratios of 9.8:1 and 10.8:1


E15ET
* Main journal sizes: as i recall, same as A-series engines (48mm?). The crank fits an A15 block except for the rear flange portion

* Conrod big end journal size: Nobody can agree, various sizes are quoted

* What is the Gudgeon pin size. Same as the A14/A15 at 19mm diameter x 63mm length

* What is the length of the con rod. E15ET is same as the E16 (while the E15 rod is longer). Again everybody says something different about the actual measurements

* What boost is standard for E15ET engine at factory: 7psi


For the journal sizes, need to see what it says in the Nissan Pulsar N12 Service Manual (usually in the EM Engine Mechanical section at the end under Service Data Specifications)

N12 service manual...with ET Turbo (AUS)



N12 service manual...turbo (USA)


Quote:

I have some E15ET pistons on rods here
Def won't fit an A crank
Narrower rod and smaller big end

Attach file:

---

  et15 brg.jpg (22.96 KB)

all the long time A series datto speedway guys eventually upgraded
to the e15et heads making an AY budget A series for 30hp more on meth
than was possible with a series heads.

Narrower crankpins and mains on narrower rods reminds me of the chevy
upgrades for engines masters competitions were every little bit counted
to reduce friction and make more hp. The E series engine should have been
further developed by Nissan and they did into alloy but only 1-1.2 liters.