| Author | Topic |
|---|
Location:
Canberra
Registered:
May 2002
|
 Raising Compression???
|
Mon, 11 November 2002 09:22
|
 |
|
What sort of things can be done to raise the compression of an NA engine??
|
|
|
I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
|
|
Re: Raising Compression???
|
Mon, 11 November 2002 09:27
|
|
|
Fit high top pistons, mill head, use flat valves rather than slightly dished ones, use thinner head gasket. This costs a bit of money.
|
|
|
Location:
Coffs
Registered:
May 2002
|
|
Re: Raising Compression???
|
Mon, 11 November 2002 09:41
|
|
|
How do you work out / find out the new compression after doing something like that???
|
|
|
I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
|
|
Re: Raising Compression???
|
Mon, 11 November 2002 10:22
|
|
|
You cc the combustion chamber.
|
|
|
Location:
adelaide
Registered:
May 2002
|
|
Re: Raising Compression???
|
Mon, 11 November 2002 12:53
|
|
word word... what sort of things are most done to 18RGeu's as a first stage of raising the comp. a little bit, as the older motors had higher, but lesser flowing heads am i right? if this is true what can i do when i freshen up my engine to get the compression up just a little to give it a little more poke and utilize the lesser-restrictive ports? Im talking about +0.5 to +1.0:1 .. is this going to boost the output of the motor noticeably much more considering will be using stock ecu and injectors? and will this affect the reliability and strength much considering i dont think i have enough to perform major TRD overhaul surgery to the old girl.
Would this need altering/reprogramming of the ECU to suit the different compression? probably hey.. or maybe it even wont be possible and worthwhile, using all other stock gear without buying a motec haha.
Cheers heaps for any comments 
Guy
_________________
BlackRA28
|
|
|
