Author Topic: C20NE Daily to C25XE Trackdaytool  (Read 51981 times)

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Offline Joest DTM

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Re: C20NE Daily to C25XE Trackdaytool
« Reply #60 on: May 25, 2016, 18:28:54 PM »
I am liking it !!

Keep it up :)
calibra's nightmare

Offline Davebatenburg

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Re: C20NE Daily to C25XE Trackdaytool
« Reply #61 on: June 28, 2017, 22:41:52 PM »
its been a while since i posted here, when i got some time i will get some pics how the car looks now. Its now full DTM stickered, and finally ''finished'' as i can say.

anyway got now the C25XE inside, but bought a while ago a Vortech supercharger which one gonna build on the v6.
But i'm busy now searching a F28 gearbox, And considering about a x30xe or y32se from an omega to replace the 2.5 before it get some boost :)
Anyone knows what stock internals can handle from both engines or have done this before? Hope to hear from u guys soon!

Offline greendream

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Re: C20NE Daily to C25XE Trackdaytool
« Reply #62 on: June 29, 2017, 13:24:56 PM »
3.2 do have a steel crank where 2.5 and 3.0 have cast iron.If I were you I'd go
For a 3.2 engine if it's easy for you to find out.Better base plant for future madness engine modifications 😂
C20NE becomed C30XE+X25XE+C20LET 3 Cali is better than one

Offline Davebatenburg

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Re: C20NE Daily to C25XE Trackdaytool
« Reply #63 on: June 29, 2017, 14:20:30 PM »
yes in that case its better to have a 3.2. also i thought that the compression ratio from the 3.2 is lower than a 3.0, but im not sure for that. in that case i can get some more boost on it, and higher hp :)

Offline greendream

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Re: C20NE Daily to C25XE Trackdaytool
« Reply #64 on: July 01, 2017, 15:52:19 PM »
Right man. You loose only a few CR (10,8 for 3.0 and 10,1 for 3.2) wich isn't enough if you plan an high boosted engine. Wich is your goal? Wich will be car's useless? Track?Daily?

If you need an hi boosted engine you should use crank and steel rods from 3.2 with 3.0 block and use Z20LET pistons to lower CR enough to run on 1,0 bar over pressure. 3.0 use 86mm pistons wich are the same size of 2.0 and you might (not sure about this, check everything before to go on) have the same head desing from both ecotec generation engines (V6 and x/z engine series are all ecotec and IIRC 2.0 X20XEV/XER Z20LET/LEH... have same valves so I assume they have same valve angle and similar head spec).

This are my thoughts, I haven't any detail to be sure, I'm doing a simple brainstorming know how GM/Vaux/Opel had worked those years with engines engineering.
C20NE becomed C30XE+X25XE+C20LET 3 Cali is better than one


 

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