Any Mini-me Dirty D Vtec's runnin' around
 

Was up with the Mini-me and boost, Is it a good set up, or just ---- the mini-me and go straight for the boost, Hit me back, anyone.

Re:Any Mini-me Dirty D Vtec's runnin' around
 

RRRRRRRRRRiiiiiiiiiiiiiiiiggggggggghhhhhhhtttttttt t

Re:Any Mini-me Dirty D Vtec's runnin' around
 

Anything boosted is better.

Re:Any Mini-me Dirty D Vtec's runnin' around
 

when boosting a d series engine i think vtec is rather pointless. build up your a6 head and turn up the boost. this is what i did and it fing rips. well i have alot of money into my setup now than my previouis one so cant wait to get it dynoed once i break in my new motor

Re:Any Mini-me Dirty D Vtec's runnin' around
 

don't go mini me....keep the lower compression NON VTEC.

Re:Any Mini-me Dirty D Vtec's runnin' around
 

Yep, or use a Non-vtec head on a vtec block, hehe..

Re:Any Mini-me Dirty D Vtec's runnin' around
 

Could you guys explain why you would want to keep it non-vtec and low compression? It would be faster with a vtec head and higher compression. I say if you can do the mini me swap cheap go for it. Just get good fuel management with your turbo setup and tune it really well.

Re:Any Mini-me Dirty D Vtec's runnin' around
 

Not here to start arguing over high compression with boost vs low compression with boost, but I will just say lower compression with higher boost always makes more power safely than high compression and higher boost.

15psi daily on 93 oct. with low compression.
or
8psi daily on 93' oct. with high compression.

Lower compression should also help the engine last longer.
4g63T, 6g72TT, 2JZ, and buick GN all have something in common, low compression, is it any wonder they are the top dogs on the street ?

Take it for what it is, don't agree... OK.. I'm tired of agruing with honda guys over this.
I kinda sound like a dick, but you can imagine I have to explain it a lot.

$1000 EMS
9.5+ compression
and 8 psi wold be sweet on the street, the boost/cfm that the motor can handle is limited b/c of knock.

AFC hack
8.4/1 compression
and 12psi ( from a big cfm turbo, like a 60-trim ) would be much faster and reliable. Or at least faster.

Re:Any Mini-me Dirty D Vtec's runnin' around
 

plain and simple:
more air makes more power than more compression

Re:Any Mini-me Dirty D Vtec's runnin' around
 

I see Jeff talk all the time about how he would rather have higher C/R with good fuel/spark management instead of low C/R with more boost so there must be a good reason he says that. I obviously don't know as much as a lot of you guys, but there is so much information or miss information out there I don't know what to believe. I'm not trying to argue I am just trying to learn. :-\

If you were running 10 psi on the same engine and turbo setup with the only difference being one engine has 10.5:1 C/R and the other has 8.5:1 C/R the car with the higher C/R would be faster and make more power right? Why not get good fuel management and have your car dyno tuned by somebody that knows what they are doing then safety shouldn't be an issue. That's just my understanding from everything I have read. People boost stock B16's, B18C's, and H22's and they all have 10:1 or higher C/R.

Re:Any Mini-me Dirty D Vtec's runnin' around
 

i've never heard jeff say that. but if you're going for peak power, more air lower compression. if you're building a street car and peak output doesn't matter all that much, and you want a car without horrible lag. then the other way around.

but you cannot get around this fact, more air makes more power than higher compression.

Re:Any Mini-me Dirty D Vtec's runnin' around
 

the best would be to have high compression and high boost that would give the most power and least lag. In reality, most of us are running stock internals and THAT is why we are saying to use lower compression and higher boost, it has more room for error during tuning and different types of weather. Higher compression is more efficient and responsive, but not as safe especially for us CA people with our 91 octane pee water.

Re:Any Mini-me Dirty D Vtec's runnin' around
 

high compression + high boost + race gas + good fuel management = race car

Re:Any Mini-me Dirty D Vtec's runnin' around
 

ENOUGH SAID

Re:Any Mini-me Dirty D Vtec's runnin' around
 

High compression+high boost+homadeturbo=blown up ----. High compression+high boost+tons of money in the block and head=you wasted your money. Nuff said there.

Re:Any Mini-me Dirty D Vtec's runnin' around
 

Just saying "low compression and more boost is better" doesn't explain jack ----. I'm NOT talking about a racecar running 20+ psi with 12.5:1+ compression on race gas. I'm talking about 91 octane pee water in a daily driver with good fuel management and dyno tuning because that is within reason.

What C/R would be too high? 9.5:1? 10:1? 10.5:1?
How much boost is too much? 8 psi? 10 psi? 12 psi?

Re:Any Mini-me Dirty D Vtec's runnin' around
 

im runing a d16a6 block with the z6 head and ill never to back to non vtec. power is smooth allthe way to redline and guess what? thats a 9psi on stock bottom end. i even spike to 11 without detonation. its all about fuel management. compression is about 10.1.oh ya its daily driven too. ;D

Re:Any Mini-me Dirty D Vtec's runnin' around
 

If you have a d16Y7 (sohc non VTEC) I say save the money that you would spend on a mini me swap and use part of it for just the D16Y8 intake manifold, which flows hella better. If you're boosting, you don't need VTEC. Turbo IS Vtec! ;D

Re:Any Mini-me Dirty D Vtec's runnin' around
 

vtec is not impressive at all as far as making big hp numbers go, it's just a hot cam... whooo hoo. turbo is 1000x better than vtec.

the higher compression the more base horse power you will have. so the less boost you will need to get to a certain hp. you will also spool faster with the higher base hp.

however it will be a bitch to tune it for the street, you will need to avoid pinging anyway possible i.e. turn the boost down, run cold plugs, run high octane (107 or 120).

pinging is what will kill the motor.

for a car that will see any time on the street i would say go with the lowest compression possible, you can easily turn the boost up to make that extra lost horsepower. its kinda hard to lower your compression when you find out you can only boost 5 psi without pinging on a hot day and all you can get is ---- 91 octane.

now with a race car its a whole different story... but most ppl still choose low c/r high boost. ie beau's car.

Re:Any Mini-me Dirty D Vtec's runnin' around
 

My friend swapped Z6 pistons into his D16A6 motor, and I just went on about 100 testing runs with him. he leaned it out a ---- !!! like A/F guage was at 9 o'clock !!! AND he had the base timing maxed out !!!
Greddy kit with SMIC ( 1G DSM ) and FMU and stock injectors !!! 8psi... Its not running right, but running lean is running lean !!! no knock... 8.4/1 compression prob. saved his ass about 99 of the 100 runs...

Re:Any Mini-me Dirty D Vtec's runnin' around
 

i had a d15b7/z6 head

7psi ....i had radiator problems...it overheated and a month later....one of the rings went :'(

no pinging ...timing was set at 10 btdc (maybe i couldnt hear it from the open downpipe) ;D

Re:Any Mini-me Dirty D Vtec's runnin' around
 

9.5 is a good comp for street use... I'm still considering on what comp I'm going with my built motor, thinkin 10.1 might be my goal. We'll see ;D

Re:Any Mini-me Dirty D Vtec's runnin' around
 

8-9-1 compression on a vtec 16 sohc , with cupped pistons for that fact of turboing the engine and yes the rest like good fuel management and such things...
that is just my opinion. just use your factory block and vtec head throw a little money into it like forged cupped piston and turbo it you should run great, at least for street, dont know for the track