Hello
my name is Stefan I'm from Switzeland and this is my first thread. This winter I would like to overhaul my engine. I would like to present my project here and I am thankfull for any advice.
I own a Caterham Super Seven with an CVH 1.6L RS Turbo Motor:
https://drive.google.com/open?id=1Yj...tskzs5kanjhJ7a
https://drive.google.com/open?id=16L...qOeaB2UcWmgftD
https://drive.google.com/open?id=1nv...JJZGfPQL6RH31E
https://drive.google.com/open?id=13D...Cuzcl9VmSAezh8
https://drive.google.com/open?id=12C...bt3BGmGOJ8L-xu
Here some information. The engine is built 91 and has now 86000 km. I drive with the Caterham approx. 12000 km per year on public roads and partake in about 3 mountain races. Therefore what I do should be durable.
The boost pressure is 0.7 bar and the Caterham should have about 150hp. The Turbo is a Custom Garret turbocharger with an A/R of 0.48 and a max boost pressure of 1.2bar.
My wish (it will be Christmas soon) would be around 220 stable hp. Because of it is a very light car (550kg), an constant power delivery is important (as far as this is possible with a turbo). Rather more power in the lower rev range than much maximum power.
Now I just write how my procedure is, what I want to do and which components I want to use. But I'm sure you have better tips and suggestions.
1. Honing cylinders to oversize for forged piston.
(Which piston would you prefer? Mahle, Accralite, Wössner, Wiseco or something else)
2. Fine balance the crankshaft together with the flywheel. Possibly lighter flywheel.
(Is a weight loss on the crankshaft worth it or is it at the expense of longevity? Is the light flywheel form Burton Power recommendable?)
3. H-con rod from Farndon EN24V.
(These are very expensive. I think a little overdone for 220 hp. Are there good alternatives?)
4. Cylinder head Stage 3 from Burtonpower.
5. ARP stud bolt.
6. Head gasket for 8.0:1 compression (or am I wrong with the compression?)
7. adjustable camshaft sprocket
8. What kind of camshaft can you recommend which is good for everyday use? (
https://www.burtonpower.com/kent-cam...-kccvh31k.html)
9. Roller Rocker Arms (Harland Sharp).
I hope I'm not completely wrong here. It is my first project at the engine and I am aware that I have to pay dearly
A colleague of mine develops and sells control units and is an expert in this field, I will "convert" it completely to electronic fuel injection and ignition.
I'm not sure what to do with the turbo yet. But here I have to change something, because the turbo lag bothers me the most. Under 3000 rpm nothing works at all. Cause there is very little space in this area (in the millimeter range) it is very difficult to find something off the rack that fits. That's probably why I have to continue using the "old" one. I have read that Turbo-Berlin, Turbos can revise. They use ball bearings and mill an aluminum compressor wheel to get it up to speed faster.
That'll be done later. First I want a solid "basis" engine.
I hope I didn't ask too many questions and best regards
Stefan