TU3 Engine Tuning
Increase the performance of your TU3 series engine...
The TU3 1360cc engine is placed in a lot of Citroen / Peugeot models! The Peugeot 205 and the Citroen Saxo are the most common ones. The engine is cheap and easy to maintain.
Bore: 75.0mm x Stroke 77.0mm
Sinds the introduction of the engine somewhere in the late 1980's, there have been a lot of different versions. Here is a short list with there valve timings. Because I am currently running on LPG, the best camshaft would be the one from a KDX engine (imho). The exhaust valve opens late and closes a few degrees after TDC. Camshaft is not build for horsepower but for torque. Don't know about the valve overlap when installing a turbo....
With the fifth gear modification on the 2CA63 gearbox, the engine is almost at its optimum torque rpm when cruising 120km/h, which is great for fuel economy.
Type TU3 |
Compression Ratio |
Horsepower@RPM |
Torque@RPM |
Intake valve open BTDC |
Intake valve close ABDC |
Exhaust valve open BBDC |
Exhaust valve close ATDC |
Intake valve open | Exhaust valve open |
KDZ |
8.8:1 |
85@6200 |
113@4000 |
7.28 |
41.02 |
56 |
7.27 |
228.30 | 243.27 |
KDY |
9.3:1 |
75@6200 |
109@4000 |
1.07 |
49.39 |
59.24 |
4.04 |
230.46 | 243.28 |
KDX |
9.3:1 |
75@5800 |
111@3400 |
2.09 |
38.58 |
31.36 |
9.16 |
220.67 | 220.52 |
KFZ |
9.9:1 |
95@6600 |
117@4200 |
9.52 |
58.13 |
63.45 |
7.09 |
247.65 | 250.54 |
| K1A |
9.3:1 |
65@5400 |
115@3000 |
5.55 |
32.22 |
31.21 |
0.42 |
217.77 | 211.63 |
K2A |
9.3:1 |
85@6400 |
118@4000 |
7.28 |
41.02 |
56 |
7.27 |
228.30 | 243.27 |
K2B |
9.3:1 |
85@6400 |
118@4000 |
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K1G |
9.3:1 |
70@5600 |
113@3400 |
7.14 |
39.45 |
54.30 |
0.45 |
226.59 | 234.75 |
K1B |
8.8:1 |
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K1F |
8.8:1 |
67@5400 |
111@3200 |
7.14 |
39.45 |
54.30 |
0.45 |
226.59 | 234.75 |
KFX |
10.2:1 |
75@5500 |
111@3400 |
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KFV |
10.5:1 |
75@5400 |
118@3400 |
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75@5500 |
120@2800 |
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KFW |
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K2D |
9.3:1 |
75@5800 |
114@3800 |
7.08 |
51.46 |
41.44 |
1.24 |
238.54 | 222.68 |
K6B |
9.6:1 |
100@6800 |
120@4200 |
13.39 |
57.15 |
56.07 |
11.58 |
250.54 | 247.65 |
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