Yes, im the one who doesnt understand whats going on. :rofl:

 

the engine was built for class racing

 

Just another bump, really interested in what the numbers are.

 

maybe a dumb question but is this engine going into a cobalt?

 

I think that's a fair question I've seen ecotecs in rock crawlers

 

well he said oval racing so now I'm thinking like a sprint car or something

 

Either sprint or stock/mod stock class. A dirt track around here races 4 banger cars.

 

Im pretty sure its going in a cobalt for circle track use

 

Fair question if it wasn't already answered.

 

its up 10hp from last year 181hp 179tq its also dropping 3kpa on the dyno so it has a restriction on the intake side and it has made 140 pulls on the rollers

 

Good results, have you considered throwing in a set of cams?

 

Nice power, pretty much what I would expect. 3kpa seems like a lot, are they forced to run a stock airbox? I'd imagine the 2.4L intake manifold isn't that restrictive, the runners are pretty good size from what I remember.

 

The 2.4 intake manifold is actually quite small once you start modifying the already restrictive head.

 

I tried to but they said no

it is on a gm cold air intake im trying to get them to put a lsj tb on it or a ls4

 

I found the LSJ TB to be utterly useless, car felt flat below 3000rpm and didnt feel any gains above that and didnt see any gains in the MAF table either. My belief is that because the ZZP adapter plate still reduces the opening to the size of the LE5 throttle body the potential gains are negated automatically, and the wider opening before the throttle body only reduces incoming air velocity. You might get better results with a ported throttle body.

I happened across this a few weeks ago and im likely going to do a similar modification on mine only using a precision lathe rather then a dremel.

https://www.cobaltss.net/forums/2-0l...esults-149064/

Not sure why the dyno sheet wont show anymore but you can view it in google images if you type "LSJ ported throttle body dyno".

 

That's what I wanted to know.

 

I would like to see them try a saab lk9 manifold