CoOlKidS1979

If you have your engine "built", say if you wanted to run high boost without having the engine blow, what exactly gets done to the engine? If you wanted to have this done a Maxima, what would you need to have done, and what would an average price be? Sorry if this sounds dumb, but Im trying to learn about this stuff, and Thanks for any answers.

Czar

generally its a custom rebuild to enhance flow, balance reciprocating assemblies, put stronger parts in to replace OEM parts, and inthe case of boost, often times they will drop the compression ratio with forged pistons to acommodate higher boost levels.

AznWontonboy

so the lower the compression ratio the better?? hows are compression ratio for racing??

1MAX2NV

iTrader: (5)

We don't drive a 4 banger honda so it's not going to be cheap. A typical built honda 4 banger is around $4K. For us, probably double that price.

DA-MAX

iTrader: (10)

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Turbo95Max

iTrader: (25)

my motor build is costing about 3500 at cost. pistons,rods,cams,SS valves,head gasket,head work.im not sure how much markup there would be for retail. You can build a Honda motor for much much cheaper then 4k. Of course all this depends on quality and material of parts you choose and how many parts you change in your "build"

CoOlKidS1979

Thanks for all the responses. What would meed to be done to a Maxima engine if you wanted to be able to handle around 15psi? Keeping in mind that you would want to replace just what was neccessary in order to keep costs down?

AntGVR4

15psi in a maxima ? thas A LOT of boost
Although i think
boost in psi is a good measure but it doesn't say how much air is flowing into the engine..that is measured in cfm. the pressure of the air is the psi but this depends on the size of the pipe carrying the air into the motor.
15psi from an S/C and 15 psi from a turbo for a maxima are two different things

Ant

CoOlKidS1979

Sorry I should have said 15psi from a s/c with intercooler. Theres people already running 10psi on stock internals so 15psi shouldnt be TOO hard to do reliably right? Or is it?

AntGVR4

if your tryin to say 15psi on stock internal...
i don't think so, you can do it and then watch you 10best engine go BOOM

Ant

Jeff92se

iTrader: (82)

Oh I suppose it's possible. I have seen supercharged Hondas running crazy levels of boost on all stock internals but it requires alot of creative and custom work. No bozo off the shelf kits here.

If you knew exactly what you were doing and were willing to pull the heads to work on them it might be possible. I suppose water injection would be a must, a full stand-alone engine management, and maybe a re-done knock sensor system.

CoOlKidS1979

Nooooo not on stock internals, I meant if you wanted to run 15 psi with an intercooler and water injection if necessary then what would you have to have done to your engine. Assuming you upgrade the fuel and injectors. Theres no way I would ever spend 5000+ to build the engine + the supercharger + intercooler. I guess what I want to know is what is the least that has to be done to the engine to get it to reliably handle 15 psi?

Jeff92se

iTrader: (82)

Probably a totally rebuilt shortblock. Stock crank is probably okay but better rods and pistons are a must. Probably have to 0-ring the block and run copper head gaskets. If compression is an issue, then different length pistons and rods might be necessary.

You have to realizie ONE thing. Just building a motor does not = an engine that can handle 15psi or whatever. It just means that the engine is capable of handling 15psi. If you run the wrong timing or the wrong a/f ratios, you will probably burn that engine up also. It takes PROPER TUNING in order to get the power and reliability.