Turbo VX?

[reformed]

I'm just going to run this by you fellas and see what kind of feedback I get.

I have the VX engine and trans going in my LX (when I get some free time) and I was thinking that if I put a turbo on it that would engage at the same RPM as the vtec (find the right one) then I could effectively have a car that would get 50MPG when I stay under 2k and be fun to drive when I want to take it to the strip.. now here's how I think I could make it work. Last summer I put a turbo kit on a friends integra that actually had a plate that went inbetween the throttle body and the intake manifold that had 2 injectors in it, they only sprayed when you got into the boost, so when you drive normally, no extra fuel is used. The other thing I'm hoping is that I can run regular gas when I drive normally, and when I drive it at the track, I can run premium and have no issues.. This is all depending on the d15z1's compression ratio though, anyone know what is is off the top of their heads? and what are your thoughts on this.. see any flaws other than the possible compression ratio issue?

[getnpsi]

i hope you have a good source for multiple vx drivetrains

[whokilledthejams]

Aftermarket turbos on any NA vehicle are an iffy proposition at best. You'd be better off taking the same money, and getting a 2nd car as a toy.

...that is unless, of course, you <i>enjoy</i> having connecting rods punch holes through your engine block.

[SVOboy]

I see not many people have boosted hondas in the past. You'd need to work out the tuning yourself, would be easy if you got rid of lean burn, but very possible.

[Vince-HX]

Originally Posted by whokilledthejams

Aftermarket turbos on any NA vehicle are an iffy proposition at best. You'd be better off taking the same money, and getting a 2nd car as a toy.

...that is unless, of course, you <i>enjoy</i> having connecting rods punch holes through your engine block.

Good tuning is key to a long healthy life on a stock engine. For example there are two civics here that push 200+ hp and 170 tq on bone stock engines, and I mean untouched One engine, d15b, was making about 175hp for 30,000 miles and started to smoke but still ran fine, engine had 215,000 miles total. D16z6's have been know to push over 300 hp pretty reliably. I recommend using Neptune or Hondata for engine mngt and have a good tuner @ hand.

You are going to spend @ least $2500 for a good quality kit installed yourself and tuned professionally. So yeah, its a bit of pocket change.

Originally Posted by SVOboy

I see not many people have boosted hondas in the past. You'd need to work out the tuning yourself, would be easy if you got rid of lean burn, but very possible.

Actually leanburn can still be had on a tuned turbo vtec-e engine. It can even be tuned to be more efficient than the factory tune

A coworker of mine is going to install a dual stage vtec d15b this weekend and use Hondata S300 and Locash for tuning. The engine has leanburn, vtec-e, and a normal vtec and can be tuned from top to bottom with the s300.

The head ports and valves are pathetic compared to a d16y5 hx engine but still respond well to forced induction. Imo 175hp is the reliable limit for a d15.

A few companies sell custom rods and piston kits for a d15 that allow much higher boost pressures and people have had 500+hp on them.