Rep Power: 688

hey just looking for oppinions on what to do should i plain a v-tec head down to make high compression and then get my bolt ons fuel rail, Adjustable Fuel Pressure, Intake Manifold, camshafts ect or should i go turbo or other with all my bolt ons? thanks for opinion and other ideas would be great.

 
Rep Power: 802

A turbo motor will always make more power than an N/A motor. Period. However, you need to look at what you want to use the car for. If you want to drag, I'd go turbo. If you want to autocross, I'd go N/A, simply because, they are much easier to drive. You don't have to wait for the turbo. If you just want a fast all round car, I'd go turbo. The feel of boost when it really kicks in is way better than pull from an N/A motor.

 
Rep Power: 688

I was thinking if i have all the bolt ons and plained the head down for more compression and then turbo it would that work or would i be blowing head gaskets all the time from to much compression and i heard that you have to oil the turbo every week ?

 
Rep Power: 802

Umm, ok. Turbos have their own oiling system. You have to run lines for the turbo, generally from the oil filter, to the turbo, and then to the oil pan. As for doing a high compression engine turbo, I wouldn't go more than 9 to 1 compression on a street turbo. You're just going to run into problems with gas. The boost will just cause detonation, and well, it won't be good.
Also, some turbos, not all, have coolant going to them as well. It's fairly easy to install a turbo, but if it's oil and water cooled, well it can get a little complicated. That being said, a turbo is the second easiest way to make power, the first being nitrous.
You can't just throw some bolt ons and plane down a head to make power. It's not just a matter of throwing on a filter, and CAI, and catback system. If you really want to make power, and not just be a ricer, well, that takes work and some reasearch. I realize that is what you are doing, so that's a good start. What engine are you planning to use?

 
Rep Power: 723

you really dont know how to make high compression do you? What engine do you have? Mill the head or get higher compression pistons if you want to raise your compression. Fuel rail/regulator won't do anything really. IM won't do too much if you have D, if you have B it'll boost you up a little.

F/I is always better than NA if you tune it properly. Do some research

 
Rep Power: 688

yes i do know how to make high compression like i said in my post(should i plain a v-tec head down to make high compression and then get my bolt ons fuel rail, Adjustable Fuel Pressure, Intake Manifold, camshafts ect) what im saying is that i plain the head down to make high compression and then add on other stuff to get more hp like injectors cams fuel rail/ regulator and more but to much to list so dont make assumptions

 
Rep Power: 688

Im planning to use a b18a1 with v-tec, but if i put a turbo on a engine with mad compresssion will it work properly assuming every thing gos to plan. thanks

 
Rep Power: 802

You can put a turbo on anything, if it's built properly. BUT the main problem you're going to run into, is fuel. If you're compression is high, the turbo's purpose is too make it higher. That's basically what a turbo does. Forces more air into the engine, and if you have the engine set up properly, more fuel as well. The hard part, is making it work without having the fuel detonate before the piston reaches TDC, and the spark plug fires. When you have too much pressure, either from boost, or manual compression from the pistons, this is what happens, and then all your tuning gets sent right out the window. You have to find a happy medium, unless you're going to try and run race fuel on the street. I have found that 9 to 1, with about 15 psi boost, is all premium pump gas can really handle without octane booster, which doesn't really help, just prevents detonation a bit.

 
Rep Power: 688

do you know how much a b18a1 engine has stock? so are you saying that 9.1 for compression is happy medium. if so how much hp would that be running around? thanks a tone

 
Rep Power: 802

I think all the b18 series are 10 to 1. The VW 2l 16v is 10 to 1 factory, so I would expect the B18's to be that too. It's about all you can do with the gas we have. If someone knows for sure, post it up.

 
Rep Power: 723

b18a1 CR is 9:2:1 I believe...

I'm too lazy to google it.

 
Rep Power: 690

Your right, all the B18A1's were 9.2:1 copression, but with the B16 head you want to put on it, that will raise comprssion a little bit, but if you use a thick head gasket and the right pistons, such as JE pistons made for this exact motor build with turbo, you can run the system at about 9-12psi on 92octane pump gas.

 
Rep Power: 688

im going turbo man it is way better
thanks for info mostly rabbit man but thanks