Im sure the head will be fine especially only on 5 psi, but any higher than that you will need to change out the pistons anyway to a lower CR, the only real problem I see with the head is the overall flow, might stop making power after a certain PSI, and I still dont see a point putting a SC on a small four banger (people tried it on the 4g64 and it ran like garbage, it took to turbo much better), sure Chevy did it, but thats Chevy and (OT) they are switching to turbo on that car anyway(so I heard)

 

While better flow shows in higher hp/tq #'s the more you can put in the cylinder at safe limits will always net you more. Doesn't matter if flow kicks you a bit. Higher pressure is going to be able to get more if it's in safe temp/fuel ranges.

The SC vs TC issue has been battled for ages and will always be, in the end, up to the owner of the vehicle to decide which is better for them. The dyno's are out there... the peak numbers are out there... the tq/hp curves are out there... what tends not to happen is the research by the consumer. A little bit of searching/investigating goes a long way.

Also don't compare a 4cyl manufactures(ie:chevy or etc) when looking for a custom setup. An engine that is designed from the ground up with intent for SC or TC will always perform. That's the RnD of millions of dollars. Adding boost to an engine not designed for such thing is always going to react different and the thousands of RnD dollars can create magic but never take the place of millions invested by a major car manufacturer.

I also wouldn't worry much about compression ratios... leave that to the developers. Adding fuel, pulling timing, higher octane fuels, meth/alky injection, intercooling, etc... all combate the relationship of compression and boost, whose end result is basically heat! Managing heat in the combustion chamber is one of the trickiest things but it can definately be done by experienced people.

 

It feels wierd quoting myself, but this statement is also a major reason why most prefer starting with "boost manufactured" platforms. Like the Evo, SRT-4, Cobalt, etc... look at how the engines are built. The attention to detail, in many aspects, results in a platform that is more easy to modify for bigger numbers. In an assembly line they can't give certain attention... someone comes along and ports things, ups boost and tunes for his environment, then modifies parts getting away from strict government restrictions and it results in an amazing leap.

It always amazes me that the manufacturers have to meet stricter guidlines than we do at the actual smog/safety inspection stations that allow us to keep the vehicle on the road.

Oh well... that's what keeps the aftermarket alive. It would definately be difficult for small business if the car came off the line fully modified minus major engine detailing.

 

yeah u are right... **** gets complicated with the cvt..

 

SC on 4 cylinders kinda sucks. Not to mention look close at your engine bay. Very hard to fit SC in there. 2nd gear burnout cause I was nursing the new clutch. Remember the clutch thing? That was first time I drove the car after swapping clutch. Nice thing is it has soo much power I could start smoking it off a roll without bruning 1 to 2. Just hit it in 2nd hard and smoke them. That is even more impressive.

ROAD/RACE

 

Obviously heat is a major issue when FI comes into play and there are many things to help but you can't expect to run a high amount of boost on a car with a high CR and have it run smoothly, and ya everything does have to work together to make sure everything is running safe. And the flow characteristics of a head does go a long way in peak horsepower, take the 4g64 it stopped making horsepower after 16 psi mainly because the head didn't flow too great but other things do come into effect as well

 

Cabin Vids? and some highway rolls?

Would be like christmas in february.
lol

 

i will take a dyno over any video/picture anyday... com'n rock just dyno that puppy already..its just wanting to get on the dyno lol

 

once the manual kit is done we will be onto the CVT, stay tuned.

 

That sounds amazing. I think we'd all like to see proof though of the tires burning starting on 2nd gear.

 

I put of vids to show you stuff. Now you want proof???/ We have stuff to do like actually build the kit. Should have dyno this week or early next week. Can't spend too much more time on entertaining you with more vids.

ROAD/RACE

 

Yes guys... more suspense for us = more work time for them = RRM turbo's in our cars sooner rather than later

A quick question for RRM though, when you got time, could you list what other mods have been done to the car? (unless that's already been done in this 53 page thread...)

Just curious of what stock parts would be suggested to get swapped for better aftermark parts.

 

that car just have exhaust on it.

 

sounded nice!

 

Boo on the wet tires! That's close to cheating!