adjustable camshaft Timing? advice please

[THEMISHKEN]

Hi all.... I run k11 1.0 turbo 0.5 bar boost .. >>https://www.micra.org.uk/threads/turbo-micra-from-georgia.67526/#post-752065

the problam I have is huge power loss after ~~120 km/h
I think the reason is timing(spark)... everything is assembled as it should but I think timing chain is streched also chain tensioners are worn so timing is retarded...
I think I must advance both IN & EX camshafts tu reduce chain strech.. I read somewhere that 4° advance or retard won't hurt engine so I decided to advance both camshafts 5°and machined sprockets...
Im planning to install machined sprockets so what do you think will this mod give any gain? or is there any chance to damage engine???

 

[infinity]

I've done mine with channels in both directions an done quite a bit more adjustment than that and had no problem

Sent from my Nexus 6 using Micra Sports Club mobile app

 

[THEMISHKEN]

I've done mine with channels in both directions an done quite a bit more adjustment than that and had no problem

Sent from my Nexus 6 using Micra Sports Club mobile app

thks for reply... and what about performane ? do you feel any increase of power or not?

 

[frank]

it will only move the powerband up or down a bit, you must have some other sort of issue, is the speedo sensor to the ecu disconnected ?

 

[THEMISHKEN]

it will only move the powerband up or down a bit, you must have some other sort of issue, is the speedo sensor to the ecu disconnected ?

Hi frank... yes speed sensor wire is disconected from ecu.... also I don't use factory o2 sensor it is disconected... I use only WIdeband o2 sensor which is not connected tu ECU maybe this is the reason?

 

[frank]

if you a/f/r,s look ok then it must be the spark map then mate ? iirc the map only runs to about 4k rpm (roughly where your power drop-off is) can you run live data like this ? https://www.micra.org.uk/threads/apexi-s-afc.56206/

 

[THEMISHKEN]

if you a/f/r,s look ok then it must be the spark map then mate ? iirc the map only runs to about 4k rpm (roughly where your power drop-off is) can you run live data like this ? https://www.micra.org.uk/threads/apexi-s-afc.56206/

I have no soft or cable to connect ecu to pc

 

[frank]

cable is cheap and software is free https://www.micra.org.uk/threads/tost-the-official-spam-thread.53370/page-63#post-651217

 

[THEMISHKEN]

cable is cheap and software is free https://www.micra.org.uk/threads/tost-the-official-spam-thread.53370/page-63#post-651217

Unfortunately I do not have the means