The E series throttle bodies are all quite similar. They all have the same bolt pattern and are similar in bore size. However, only some can be interchanged due to changes in sensors and vaccum systems. If you are looking to upgrade, make sure you get a picture of the one you are going to purchase, and make sure it has the same sensors and vaccum fittings.
Throttle Body Bore Diameters
3E-E
45mm
1st Gen 4E-FE
50mm
2nd Gen 4E-FE
45mm
4E-FTE
50mm
1st Gen 5E-FE
50mm
2nd Gen 5E-FE
45mm
5E-FHE
50mm
Bored 3E-E throttle body.
3E-TE throttle body.
4E-FE throttle body.
4E-FTE throttle body.
4E-FTE throttle body (left), 2nd gen 5E-FE (95-96) throttle body (right).
1997+ 2nd gen 5E-FE throttle body (left), 1995 - 1996 2nd gen 5E-FE throttle body (right). Both have been bored out. Note: 3 and 4 pin throttle position sensors. The sensors can not be swapped due to different bolt patterns.
1st gen 5E-FE throttle body.
5E-FHE throttle body with a 3 pin throttle position sensor (TPS).
Between the E series engines there is a handful of intake manifolds to choose from. Unfortunately, if you have the wrong engine you could be completely left out. The 3E, 3EE, and 2nd gen 5E-FE have only one intake manifold avaliable to them. If you are looking for a differnet manifold you will have to get something custom made. Aside from those engines, all the intake manifolds are interchangable. That is great news if you have a 4E-FTE, 1st Gen 5E-FE, or 5E-FHE.
3E intake manifold.
3E-E intake manifold. This manifold does not incorperate an EGR system.
Head gaskets are a common way to increase or decrease compression between engines. Many of the gaskets are interchangable. Here is a chart of the compressed gasket thicknesses:
The E series rods are mostly identical. Except for a few JDM engines and the later (96+) 2nd gen 5E-FEs, they all share the same connecting rods. Here is a quick reference:
Part #
Application
CRT026
3E, 3E-E, 1st gen 5E-FE, 2nd gen 5E-FE (up to 1995)
???
3E-TE
???
4E-FE
???
4E-FTE
CRT032
2nd gen 5E-FE (1996+)
???
5E-FHE
3E, 3E-E, 1st gen 5E-FE, and 2nd gen 5E-FE (up to 1996) connecting rods.
3E, 3E-E, 1st gen 5E-FE, and 2nd gen 5E-FE Pauter rod and spec sheet.
3E-TE rods.
A large connecting rod comparison.
4E-FE stock rod and piston.
4E-FTE stock rod and piston.
4E-FE and 4E-FTE rod comparison.
4E-FTE stock and Pauter rod (Ross piston).
5E-FHE rods.
4E-FTE and 5E-FHE Rods.
5E-FHE (left), Pauter rod / CP piston (middle), and 3E-TE (right) comparison.
