8 replies to this topic

[brad-the-bear]

how do.

 

hopefully when i finally get  the engine in the car I'll be temporarily setting up the weber with a gunson gas analyser, the analyser reads the CO2 level as a percentage, what CO2 level would i need to be aiming for? 1380-fast road cam-BVH-10.5:1 etc.

 

also as a side note when i start her up should i set the idle to around 2,000RPM  for 20mins to bed the cam in and also should i adjust the idle until running in is complete? 

 

cheers,

bear.

 

  

[Dusky]

You should run in the cam for 20 minutes, after that you can change idle.

Dont think you are supposed to idle th eengine at 2000 rpm though, I think you need to keep altering the revs between like 2K and 2100..

[brad-the-bear]

cheers pal, when am using the car on the road while running in, should i set the idle around 1200rpm?

[KernowCooper]

Depends what cam you decide will dictate what idle you end up with, your CO meter will set the idle mixture and that will have a maximun reading acording year of the vehicle for the MOT. For jetting then there are starting points but to get your weber jetted correctly then a rolling road session is the next step.

[brad-the-bear]

wont be able to RR untill the engine is run in. weber is jetted as a starting point. what idle should i expect with a 276? ignoring MOT regs, what should i set the CO2 as? 

[KernowCooper]

My 1330 has a 276 and idles round about a thousand revs, my CO at idle is 3.0%

[brad-the-bear]

cheers  pal. 

i heard that am not allowed to let the engine run at normal idle engine speed during the run in process, is this right.

 

thanks again,

bear.

[KernowCooper]

You need to run the cam/followers in when first started, engine speed 2000rpm for about 15mins, otherwise you;ll have issues with the camshaft/followers.

[Vipernoir]

I run mine in at a minimum of 2000 (usually 2500) for 20-odd minutes then changes the oil & filter.