Domestic 4 cyl engine question

[pjhitchcock]

I'm building an oval track race car. Rules say Domestic cars with 4 cyl engine. No multiport fuel injection. Max 104" wheelbase. Automatic transmission only. What vehicles are included given just those guidelines?? Basically, I am not sure what is throttle body and what has multiple injectors.

[MagicRat]

Originally Posted by pjhitchcock

What vehicles are included given just those guidelines?? Basically, I am not sure what is throttle body and what has multiple injectors.

I could be a smart ass and say it's all the slow cars...........

Multi point injection uses one injector per cylinder, usually located beside the intake valve.

A throttle body uses one or two injectors located on top of the intake manifold, where you would normally find a carburetor.

These guidelines pretty much limit you to basic, cheaper cars from the '80's.

If you have money available, try using a GM car with a 2.5 liter 4 cyl engine, but substitue a GM marine engine block. They came with 2.9 liters and 140 hp, but can produce more with some basic mods. They are internall much stronger than the car engines and can happily run at full throttle, 4500 rpm+, all day.

[pjhitchcock]

thanks MagicRat, but i know what makes a multiport a multiport. I am just not sure which models I should be looking for. BTW, the car is actually for a kids division, 8-15 year olds. It's supposed to be slow!