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Old 15th August 2005, 10:00   #1
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Default Vtec Mods

amazing - seems to be very little on offer for the B15 Vtec engine mods wise on the net unless I am ignorant. Everything seems to be available for the DOHN vtec upwards

Will a set of iridium plugs+ K&N filter help ?

May be off to the states next month so any ideas ?

cheers
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Old 15th August 2005, 14:25   #2
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ajmat sir,
well firstly its DOHC vtec not dohn
and yes the filter and plugs will make a marginal differenece..not necessary iridium you can go in for platinum, NGK with a 6 rating are good...in fact i gave a set to psycho see if he still has it...they are good
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Old 15th August 2005, 14:42   #3
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I keep hearing about the Civic "mini-me" D16something head, so to see what you could do, I TBHPed it!

http://team-bhp.com/forum/showthread...hlight=mini-me
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Old 15th August 2005, 19:27   #4
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Quote:
Originally Posted by iceman91
well firstly its DOHC vtec not dohn
Thanks

Duh- that was a typo - too many of them from lately lately

Are you now flying Lexus class - RX 330 ???!!!!
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Old 15th August 2005, 20:37   #5
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Best thing to pick up from the states for the b15 series sohc would be the vtec controller (will help you in controlling when the wilder lobe comes on.) for the older civics. See if you can get a set of splitfire plugs (6 rating) a good sponge based filter (like uni). If you want to go a step ahead get yourself the following:

1) A performance intake manifold for the civic sohc vtec
2) Civic spec throttle body
3) Larger injectors preferably close to 350 cc
4) Hondata piggy back system
5) Higher compression forged pistons
do you want more or should I stop

Hey you could also get yourself a D16B head that's a DOHC VTEC

Last edited by Psycho : 15th August 2005 at 20:38.
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Old 15th August 2005, 20:51   #6
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Psycho has missed one. Get right set of tyres to make right noise while cornering(:
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Old 15th August 2005, 22:59   #7
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Quote:
Originally Posted by ajmat
amazing - seems to be very little on offer for the B15 Vtec engine mods wise on the net unless I am ignorant.
B-15 does not exist. Your car has a D series engine, D-15. The B series is the fire-breathing engine found in the type-Rs. The Civic/Delsol Type-R uses B-16 (160 bhp) and the Integra GS-R B-18 (185 hp).

I would try to get a hold of the ECU/EPROM chip from the Thai/Malaysia spec engines. That's easy 15 horsepower.

After that, you can do the regular mods like CAI, header, throttle body, porting, hot cam. A head swap if you want to go all out. Really the only thing you can bring in a suitcase is a camshaft or an chip. Filter and plugs can be bought in India, its the same stuff.

Last edited by Mpower : 15th August 2005 at 23:02.
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Old 16th August 2005, 08:31   #8
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Thanks guys

Looks like there is a hell of a lot out there. Probably start with some lite stuff first and build up accordingly - this is my daily driver so I cannot mess around too much

Psycho - am impressed - what do you "not" know !!!
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Old 16th August 2005, 15:56   #9
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Mpower, pretty sure here that the OHC Vtec is the B15C, and the OHC 1.5 is the B15. But I may be wrong.
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Old 16th August 2005, 16:29   #10
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Some info on Honda engine codes:

Honda engine codes consist of a letter, a two digit #, another letter, and sometimes another #.

1st letter represents the 'series'.
ex: B16a2 = B-series

1st two-digit Number represents the number of liters.
ex: B16a2 = 1.6L

2nd letter + Number represents the model/generation of the motor.
ex: B16a2 = 'a' model and 2nd generation

I think the D series is for their economy car range, which the City fall's into. The B range motors are all more powerful.

Check out this link
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Old 16th August 2005, 17:00   #11
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Just TBHPed B15, and I don't think Domnic and Vtec man can be wrong!!

http://team-bhp.com/forum/showthread...&highlight=b15

http://team-bhp.com/forum/showthread...&highlight=b15

Very sorry for going off topic!
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Old 16th August 2005, 17:12   #12
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Quote:
Originally Posted by Psycho
D16B head that's a DOHC VTEC
Sorry a mistake it happens to be D16Z for the DOHC Vtec

and on digging deeper also found that honda has only the following SOHC Vtec Engines in the 1.5 l space

D15B 1493cc SOHC VTEC, 130ps
D15B 3stage 1493cc SOHC 3-stage VTEC, 130ps
D15B Eco 1493cc SOHC VTEC-E, 94ps
D15B(?)- 1.5L SOHC non-VTEC '88-'95 Civic's (62-102hp)
D15Z8 1493 SOHC VTEC 114BHP (1995-2000

D15B (has 20 lobes)
...
Displacement (cc): 1493
Power (bhp@rpm): 130@6800
Torque (ft/lbs@rpm): 14.1kg/m@5200
Compression Ratio: 9.6:1
Bore (mm): 75
Stroke (mm): 84.5
Cam Design: sohc
VTEC?: yes
OBD:
Year(s) Produced: 1991-1999
In the following car(s): Honda Civic VTi (EG4)

This is the closest match for any car to the indian OHC vtec. Guys please correct me if I am wrong...
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Old 17th August 2005, 05:49   #13
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Also keep in mind that any peak power mod like header, large TB, or shorter intake will worsen the already poor midrange and therfore the driveability.
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Old 17th August 2005, 06:02   #14
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hey v1p3r,
all "B" series engines were twin cam...not SOHC.
the D15z head of the older civic is a straight fit on the honda city. it had been done on one of bangalore's honda city. makes a huge difference. also parts for the d15z are easily sourceable
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Old 17th August 2005, 15:58   #15
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Hi guys...

Hope my car counts in here....

I drive a 1999 Honda Civic 2 door...
Has a 2.2 ltr VTI Honda engine, T4 Turbo (1.4 bar Boost), stand alone fuel management, completely new ECU/engine mapping and chip. Traction control, reworked cyclinder head (gas flowed), lightend fly wheel and a new 6 speed transmission as well.

This get me about 370kW (500 bhp) or so and does 0-100 km/h in about 3.7 seconds.
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