NA engines, who's in the know ???

[Digsy]

Right just spoke to Jason and he said the reason was due to the Rod oil exit clearences. He is re machining an NA crank for more clearence this week.

 

Basiacally the bearing could stand up to the heat which is why we are going clevite and widning the oil ways.

 

Widning the oilways is what we do to the big single engines too as a matter of course.

 

Do you mean the big end bearing clearance?

[Lucifer]

Do you mean the big end bearing clearance?

 

NO he was talking about the Rod clearences to the Crank, ie the width. ILl try and get him on here if you like. he doesnt do computers though so maybe ill just record the conversation and retype it! LOL

[Ian C]

I dont doubt you mate, just saying like Ian or someone pointed out..........

 

I think you've interpreted it wrong - it's there to stop the throttle icing up during driving, i.e. when the coolant is hot. The whole thing about cold start was a red herring, it's not a design feature for cold starts.

 

-Ian

[Suprash]

I think you've interpreted it wrong - it's there to stop the throttle icing up during driving, i.e. when the coolant is hot. The whole thing about cold start was a red herring, it's not a design feature for cold starts.

 

-Ian

 

I know, thats why I asked what is for then a few posts back after you quite rightly pointed how it cant be for cold start when the water would be cold from start..........read things properly Ian....lol