too much venting????

[jack_mcgill]

i was thinking....on my rs4 ,my bmw body has both windshield &back glass completely cut out for venting...is it going to make my engine run too cold?...i saw that most people only have the standard 2" hole in the windshield so that made me wondering about it

 

[ohmygahitscoby]

Probably not. The purpose is to take out the hot air and take in air. If you can run fine with it like that, then you're alright.

 

[Rolex]

That would not be a problem in the warm weather, but you need to retune for cold weather running, and most guys will run a body with no window cutouts in the winter.

 

[jack_mcgill]

exellent ..i tought the same thing....anyway it can't be worse than those bodies so low that 1/2 of the cooling head is stickin' out of the body

 

[Rolex]

It will run, but the colder the engine is, the richer it will need to be. If you wrap some tin foil or the cuff of an infant's sock around the head, it will keep it warmer and let it run better.

 

[jack_mcgill]

???? wouldnt you want to lean it up a notch to up the temp a bit???? anyway i dont run in winter, its only a summer ride

edit: never mind that....just tought about air density hehe

 

[Rolex]

edit: never mind that....just tought about air density hehe

That's what it is.

If you try to get your running temp in the 220 range when it's 35 degrees out, you'll lean it till you ruin it. That's the reason I'm still waiting to get mine broken it. You can't do it right in the cold.

 

[Kyosho racer]

hi how do you no when your engine is broken in??

 

[flandersander]

Rule of thumb, about 5 tanks of fuel. go by the manuel and you will be fine.

 

[olds97_lss]

Depending on the engine, some are pretty well broken in after a quart, others are broken in after a gallon.

I haven't had an engine yet that I felt was ready for ripping after 5 tanks... The earliest was 14 75cc tanks (about 1000cc's) with an OS15CV-R(X).

Rarely do I start to really let it rip until I've run at least 1/2-3/4 gallon through the engine. The first 500cc's or so are very crucial to the life of the engine. Usually in the next 1000cc's, the engine lets you know when it's ready.

When it starts to run easier, the temps calm down to a stable level, it idles easily, starts easily, the pinch is still there, but not busting your knuckles with the starter... things like that, it's getting close to being fully ready.

I had about the same (around 1000cc's) with an orion wasp 18 engine I put in my t-maxx years ago. It was ABN vs ABC like most engines are now. Instead of chrome plated sleeve, it was nickel, which isn't as durable and long lasting.