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- | **This page is just a skeleton for now** | + | ====== Internal Details ====== |
- | L36 vs L67 vs L32 vs L26\\ | + | Basic Details |
- | - connecting | + | |
- | https:// | + | Since we know that the engine blocks between all of the series 2 and series 3 3800's are largely identical we can forget about that and focus on the internal components where a lot of the differences lie. |
- | - pistons\\ | + | |
- | - flywheels\\ | + | ===== Valvetrain ===== |
+ | |||
+ | [[: | ||
+ | |||
+ | [[: | ||
+ | |||
+ | ===== Connecting Rods ===== | ||
+ | |||
+ | [[https:// | ||
+ | |||
+ | ==== Series 2 vs Series 3 ==== | ||
+ | |||
+ | Series 3 engines all utilized powdered metal connecting rods, however the series 2 rods were cast metal. There is some debate as to which material is stronger though. | ||
+ | |||
+ | The series 3 powdered metal rods dont have the weight variance that cast do, save time/ | ||
+ | powdered metal rods are brittle so they can machine the big end bore and bolt holes then crack the cap off (no more machining 2 separate components to mate then final machine big end)\\ | ||
+ | the fractured cap also means the cap is self aligning, this is a good thing but the material being brittle to accomplish this means the material may not be very strong and will shatter instead of bend at their limit. | ||
+ | |||
+ | Some will reference the series 3 rods as being stronger because they are " | ||
+ | " | ||
+ | It is not a forging in the conventional sense where a hot ingot is hot forged into the shape of a rod over multiple dies thereby giving the steel a grain structure that improves the metals strength…that is a true rod forging. | ||
+ | |||
+ | ==== L67 vs L36 ==== | ||
+ | |||
+ | The L67 and L32 have stronger connecting rods than the the L36 and L26 engines. | ||
+ | |||
+ | L36/L26 rods are longer than L67/L32 rods as well\\ | ||
+ | {{: | ||
+ | |||
+ | Below is an image of the L67 and L36 connecting rods: | ||
+ | |||
+ | {{: | ||
+ | |||
+ | The L67 rod is on the left and the L36 rod is on the right. | ||
+ | |||
+ | ==== L36(s2 NA) vs L26(s3 NA) Connecting Rods ==== | ||
+ | |||
+ | Below is an image of the L36 and L26 connecting rods. | ||
+ | |||
+ | {{https:// | ||
+ | |||
+ | The L26 rod is powdered metal, however it is slightly smaller than the L36 connecting rod. | ||
+ | |||
+ | Here is a side profile of the two: | ||
+ | |||
+ | {{https:// | ||
+ | |||
+ | The L26 rod is on the right, the L36 is on the left. | ||
+ | |||
+ | ==== | ||
+ | |||
+ | ===== Pistons ===== | ||
+ | |||
+ | L67 and L32 pistons (supercharged) are longer than L36/ | ||
+ | |||
+ | The supercharged pistons have a thicker crown and a a deeper dish. The ring lands are also moved down by 0.1" compared to the naturally aspirated engines. | ||
+ | |||
+ | Some L67 and L32 pistons received piston skirt coatings starting in 2003. This coating though seems to wear off by ~75,000 miles | ||
+ | |||
+ | ===== Resources: ===== | ||
+ | |||
+ | [[http:// | ||
- | journal sizes\\ | ||
- | https:// | ||
- | Stroking/ |