1995 Civic 1.6 Vtec engine performance upgrades
#21
look on the block where the motor and trans meet just below the dizzy and tell me what it says should say something like d16z6,d15b7,d16y8, something like that here is how vtec works
https://www.hondacivicforum.com/foru...ead.php?t=7777
https://www.hondacivicforum.com/foru...ead.php?t=7777
#22
How VTEC works: https://www.hondacivicforum.com/foru...ead.php?t=7777
(The RPM specified in the video is not the same for every engine. In fact, this video is for a boat engine, but it works the same way. On our engines VTEC engagement is around 5000-5500 RPMs.)
You won't gain power by simply lowering the VTEC engagement point. On a stock engine, where Honda has already put it is good enough. When you get the car tuned your tuner will adjust it as needed, properly. If you adjust it to engage in the wrong spot, it will cause you to lose power. You can't just guess where VTEC needs to be.
Look at the engine code on the front left side of the block. I'm willing to bet it's a D16Z6, which is a SOHC VTEC engine. To just confirm you have VTEC, look on the back passenger side corner of the head. If you have VTEC, you will have a solenoid back there.
(The RPM specified in the video is not the same for every engine. In fact, this video is for a boat engine, but it works the same way. On our engines VTEC engagement is around 5000-5500 RPMs.)
You won't gain power by simply lowering the VTEC engagement point. On a stock engine, where Honda has already put it is good enough. When you get the car tuned your tuner will adjust it as needed, properly. If you adjust it to engage in the wrong spot, it will cause you to lose power. You can't just guess where VTEC needs to be.
Look at the engine code on the front left side of the block. I'm willing to bet it's a D16Z6, which is a SOHC VTEC engine. To just confirm you have VTEC, look on the back passenger side corner of the head. If you have VTEC, you will have a solenoid back there.
Last edited by trustdestruction; 08-04-2009 at 11:39 PM.
#23
Look at the stamp on the engine below the distributor. If you have the 1.6L v-tec it will say D16z6 if you have the 1.5L non v-tec it will say D15b7. V-tec, as far as I know, is set to engage at the point where the most horsepower is produced. So engaging it earlier would actually hurt the performance but don't quote me on that.
#24
Okay, I got the code off the engine. It says D15B2, and I have the vtec. So, I have been thinking about what you guys said, and I am thinking about doing an engine swap, if it's worth it. I have some good connection's for engine's, and I know it will cost about 1000 to upgrade this one for around 24hp. If you have any suggestions on an engine swap I can do to get more power, I am all ears. Additionally, I won my race last week, I was in the lower class, but stomped them. Unfortunately, this moved me into the upper class, with the faster cars, so I wanna get this car upgraded for next season. It was cool as hell though, and I got a trophy.
#26
It say's vtec right on the valve cover. Is it possible someone put a different valve cover on the engine? I will go double check the engine, maybe I misread it. I will also take some pictures of what I have, so there is no confusion.
#28
The spark plugs are on the front, on top of the valve cover. I am uploading some pictures on my photobucket now, I will let you know as soon as they are done. Here is a link, they should be done in 5 min or so. There are a lot of other car pictures there, so I am sorry if you have to weed through them. http://s688.photobucket.com/albums/vv248/jsteele9731/
#30
So, I have a mismatched engine? What are my option's here? What kind of power do you think I am getting? What can I do to get more out of this? I saw some specs, and I saw a DHOC 2.0 vtec putting out like 200hp and 150 tq, is it possible to stick this in my car? Will it mate with the tranny, or do I have to swap that to?