from todays rr day



well chuffed!!

mods are:-

air to air, gt28, pd manifold & miltek exhaust

 

So your chuffed with boarderling AFR after 6k,
Dont tell me it has a bluefin at this level it will be detting above 5.5k, I have seen many of these like this.

Mark

 

no wonder no-one posts in here

 

So you dont want any comments stating TOTD said AFR borderline and you should be carefulas I guess they told you this also.

Markl

 

i just read this and i dont know what afr is

educated guess: air fuel ratio?

what does the afr borderline mean?

 

Yes correct,
Post up afr graph.

Mark

 

pani k,
You need to maintain a certain AFR, richness around max power, otherwise things get a bit hot and start melting.
MS is just saying it is getting a little on the lean side of rich enough, as though fuel is lacking a bit.
tabetha

 

ahh right ok i seem to understand now. so when you are reaching your limits, things start to get a bit dangerous and you risk component failure because of an inadequate healthy afr ratio as I understand.

 

Yes basically they use rich mixtures as a form of cooling and det resistance.
whilst brits favour rich our cousins over the pond have a saying LEAN IS MEAN!!
tabetha

 

What AFR's should we be seeing at 6000rpm?

i have my AFR graph at home from the same RR day and chris todd suggested it maybr running too rich at the top end and killing the power

car has a bluefin and decat

 

rather rich than lean. at least you know its safe at the top end

 

afr graph

 

havent got a clue what that graph means lol!

 

AFR is the dotted line. You can see it just starts to lean out when the operator aborts around 6400

 

28RS or 28R?

Lankpicker: take advantage of Marks and Chris's skill, if they its not right, then its not right needs looking at. Cheaper than the alternative...