CIS turbo power/boost limits

[Jukka Majanen]

Hi

Michael Gough <mdg3369 at mac.com>
wrote:

> ...Anybody have any BTDT with the 5kt cars knowing 
> how much boost the stock fuel injection is good for? 
> I may want to run the stock turbo fuel system on
> my next project for a wile before I upgrade to EFI...

I have used 2.2 Bar (absolut) max. charge pressure
on my ´90 10v MC-2 engine without problems.
That car has stock CIS. 

I measured the A/F-ratio by O2-sensor voltage and
there seems to be ~800mV ( ~13.0:1 ) at full boost 
( ~2.2 Bar/3500rpm ) and it remains to the max power
( +1.9 Bar/5500rpm ). Those restrictive exhaust parts: 
header and K-24 seem to lower the pressure at the top?

Looks that CIS is capable to 2.4 Bar as Ned wrote.
When I was testing the car at that ( with our Euro 98
octane gas ) detonation made me to slow down and
readjust it to 2.2 Bar.

best
j-pm