Civic-EG.com Forum 3.3.1

- Sun Feb 24, 2008 3:44 am #43595 i have a b7 bttm end, and have the v-tec head from a 97 HX coupe. what all will i need to do a mini me swap, and yes its a v-tec head as well!

Last edited by darkshadow on Sun Feb 24, 2008 4:23 am, edited 1 time in total.

[chrono404]

- Sun Feb 24, 2008 3:50 am #43597 There is a Write up on how to do a Mini-Me Swap Here : http://www.civic-eg.com/viewtopic.php?t=10 . Here is a Link to all DIY Articles on the Site.

With the head off of a HX, You wont be Getting the Performance Vtec. You will get Vtec-E. It will get awesome Fuel Mileage, However it wont have the performance of a D16z6(92-95 EX/Si) or a D16y8(96-00 EX) Head. It might even have less Performance then with the Original Head.

2017 Chevy BoltEV DD |2001 Honda CRV SE

- Sun Feb 24, 2008 4:05 am #43602 hmmm.... interesting

96+ Civic HX D15Z

* 1493cc
* 4 cyl, 16 valve
* SOHC VTEC-E
* 9.4:1 c.r.
* PGM-FI (MPFI)

115 bhp @ 6200
Redline: 7100 rpm 104 lb-ft @ 5400
specs from the car where the head came from, its pnp as well

[chrono404]

- Sun Feb 24, 2008 4:16 am #43604 Vtec-E Is quite Different from Vtec. As I stated above its entirely for Fuel Mileage.

Honda's next version of VTEC, VTEC-E, was used in a slightly different way; instead of optimising performance at high RPM, it was used to increase efficiency at low RPM. At low RPM, one of the two intake valves is only allowed to open a very small amount, increasing the fuel/air atomization in the cylinder and thus allowing a leaner mixture to be used. As the engine's speed increases, both valves are needed to supply sufficient mixture. A sliding pin, which is pressured by oil, as in the regular VTEC, is used to connect both valves together and allows the full opening of the second valve.

If you want something to get you High Mileage then its a good idea to do a Mini-Me with the HX Head. However my Stock D16z6 With EX Tranny Gets me an Average of 30-32mpg with me playing around mixed with highway driving. Pure Highway Driving gets me 39-41mpg. My Civic Gets the Best Mileage of anything at my House, Its even better then my Dad's Geo Metro.

2017 Chevy BoltEV DD |2001 Honda CRV SE

- Sun Feb 24, 2008 4:20 am #43605 there a way to make it work like a z6 head? i also will be running a p28 ecu

[chrono404]

- Sun Feb 24, 2008 4:36 am #43607

there a way to make it work like a z6 head? i also will be running a p28 ecu

To my Knowledge, The HX "Vtec-E" Head is mechanically Different then the z6 "Vtec" Head.

Someone else might know of a way. Possibly Swapping out Vtec Solenoids and the Cam? I have not heard of anyone doing this. It might work, Then again, It might be impossible to do. I would wait until other people come on and reply.

2017 Chevy BoltEV DD |2001 Honda CRV SE

- Sun Feb 24, 2008 4:51 am #43610 correct me if i am wrong, isnt the v-tec controlls all in the ecu and not in the head itself?

[chrono404]

- Sun Feb 24, 2008 5:23 am #43612

correct me if i am wrong, isnt the v-tec controlls all in the ecu and not in the head itself?

Video of How Vtec Works

The ECU tells the Vtec solenoid when to activate. All of Vtec doing its Job is in the head and the cam. The ECU just basically turns Vtec On and Off when it gets to a specific RPM. If you wanted you could wire a Switch to turn Vtec on and off as well, However doing so Would not be advisable.

Last edited by chrono404 on Sun Feb 24, 2008 5:30 am, edited 1 time in total.

2017 Chevy BoltEV DD |2001 Honda CRV SE

- Sun Feb 24, 2008 5:26 am #43613 i have a p28 ecu for that!

- Sun Feb 24, 2008 5:05 pm #43625 You are not going to want to do a mini me swap with the HX head. You will need the HX ecu and wont get the kinda power you are wanting. its more of an economy vtec not power vtec.

You will want to get a y8 or a z6 head with a P28 ecu.

1986 Nissan 300zx
1980 Kawasaki KZ650
2014 Kawasaki Ninja 300

- Sun Feb 24, 2008 5:14 pm #43628 yes v-tec is in the cam and head, but its the ecu that tells it when to kick in. correct me if i am wrong?

[chrono404]

- Sun Feb 24, 2008 5:20 pm #43629

yes v-tec is in the cam and head, but its the ecu that tells it when to kick in. correct me if i am wrong?

All of Vtec doing its Job is in the head and the cam. The ECU just basically turns Vtec On and Off when it gets to a specific RPM.

I already answered this. And as I and Greasedmonkey have already stated, you want the z6 or y8 Head, This Will give you Your Performance Vtec. The HX Head has Vtec-E, This will not give you the Power you want as its made for Econemy. If you do a Minime with the HX Head and use a P28 ECU the car will not Run Correctly.

2017 Chevy BoltEV DD |2001 Honda CRV SE

- Sun Feb 24, 2008 5:52 pm #43630 from what i understand from reading other sites and doing my research, they are both the same head, just different computers telling it what to do

- Sun Feb 24, 2008 6:03 pm #43634 Ok, look:

Vtec-E: GOOD MILEAGE, LESS POWER


Vtec: MORE POWER


It's really not that hard. Different heads, different ECUs, they work DIFFERENTLY.

Vtec-E Is quite Different from Vtec. As I stated above its entirely for Fuel Mileage.

Honda's next version of VTEC, VTEC-E, was used in a slightly different way; instead of optimising performance at high RPM, it was used to increase efficiency at low RPM. At low RPM, one of the two intake valves is only allowed to open a very small amount, increasing the fuel/air atomization in the cylinder and thus allowing a leaner mixture to be used. As the engine's speed increases, both valves are needed to supply sufficient mixture. A sliding pin, which is pressured by oil, as in the regular VTEC, is used to connect both valves together and allows the full opening of the second valve.

- Sun Feb 24, 2008 7:27 pm #43640 what if it isnt a v-tec-e valve cover?