Friday, June 14, 2013

RnD Custom Pistons 4G15 Mivec - The Mission Starts Now - Finding a supplier!







Where does it start? I don't know. But here are a collection of assorted piston related diagrams and pictures.




























The bent rod/piston found in Adz car.
/bent-rod-z27ag-4g15-more-to-come.html












Can't remember where i found these CP piston photos.








Spool rods i believe




















Decked block with the pistons installed.











Machine shop










BFM/Full blast piston kit with coated skirts.













More CP pistons photos.









The bent rod :(






























A typical sheet you have to fill out when ordering a custom piston.







Various parts of a piston

















A bit annoying that the stock OEM books don't go into more detail regarding the 4g15 piston. But yet they go into detail regarding the 4A91









I Found interesting information here:
http://z3.invisionfree.com/

4G15 - 75.5mm x 82.0mm
4G18 - 76.0mm x 87.3mm
S4PH - 76.0mm x 88.0mm

Regarding pistons, cranks, stroker kits and other various comparisons of the old 4G15 and other similar engines.






/40412-4g15-modify.html
4G15 bored 2 1.6 not 2 say cannot but the reliabilty is the main concern..
as 4G15 bore n stroke is 75.5mm x 82mm while the 1.6 piston is 81mm...tat means boring as much as 5.5mm more 4 each

Rod length: 131mm
Big end diameter: 45mm
small end width: 19.9mm
big end width: 19.9mm
small end diameter: 18mm

Finished Bore Size:
 76mm
Stroke:
 82mm

Flat Top Piston
Material: 4032

* evans tunning a youtube user that makes a decent engine rebuild video

Sample Piston Scan:

Custom Manufacturer Pistons:

http://www.rosspistons.com
http://www.jepistons.com
http://www.ariaspistons.com
http://www.wiseco.com/
http://www.cp-carrillo.com
http://www.mmsonline.com/articles/racing-to-create-custom-pistons
http://www.diamondracing.net

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