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If I'm not mistaken (correct me if I'm wrong) the 16 valve 2.0l turbo engine (from a c900) has a compression ratio of 9:1, the 16 valve 2.0l n/a engine has compression ratio of 10.1:1 and the 8 valve n/a engine has compression ratio of 9.5:1
Are the pistons from the n/a engines (8 and 16 valve) the same?
Are the 16 valve turbo and n/a heads the same?
If the answere to one or both of these questions is no, what would the compression ratio of an engine with pistons from an 8 valve n/a engine and a head from a 16 valve turbo engine be? In other words would the compression be 10.1:1 or something different?
Also what is the compression ratio of an 8 valve turbo engine, and are the 8 valve turbo pistons the same as the ones in the 16 valve turbo engine.
Now, the reason I am asking this is that I am rebuilding a 16 valve turbo engine. The pistons, upon inspection were deemd to be too worn to be used. This was not a problem as a friend of mine (IceSaab, if enybody remembers him and his 9k drag-saab) had a 2,0l turbo engine from a 9000 turbo lying around unused. But, much to my dismay, the pistons from this engine also were too worn to be used (altho not as bad as the first ones). Now I have a problem, as 2.0 liter 16 valve turbo engines are (for some unkown reason), rear here in Iceland, so finding good (used) pistons is not as easy as it might at first appear.
The price for boring the block and buying oversize pistons is over US$1000 which is more than I can afford at the moment. I am there for looking at other options. Some of you have successfully added a turbo to 16 valve n/a engines so this is a doable (altho difficult) option.
Are there any other (not too expensive) options out there?
I will be adding a front mounted 9000 intercooler and a 3 inch exhaust system from the turbo all the way back (battery relocated). Also of importance is the low temperature in Iceland, the mean temperature in Reykjavik in July (the hottest month) is 14,0°C (57,2F) and the highest ever recorded in Reykjavik is 24,7°C (76,5F). So engine knocking is not as much of a problem as in, say, Texas. The fuel available here is also of very high quality, with Shell V-power (99 octane RON) the top of class.
Thorir
'83 900 GLE (hopefully soon to be turbocharged)
posted by 213.220.8...
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