hi everyone ~

A very uncommon mod here in OZ is modifying gearsets or FD's. Plain and simple Aussies get a CAI , a fart can muffler and call that "modified".

I have a 93 EG civic hatch , with a B18c7 AUDM type R engine. Pretty much the same as your B18c5. (4,7 FD tho)

It is completely bone stock in the engine bay , and i am looking at performance without touching the engine itself. Sofar alot of weight reduction and a light flywheel + HD clutch.

I ask , does anyone here have valid input or experience on what the Mfactory 3/4/5 gearset to suit my gearbox , will do to my performance (in real terms) ?
Website claims an average 21% better acceleration per 3/4/5 - what would this mean down the 1/4 ? And with everyday driving performance ?


PS my current PB is

14.03 @ 101MPH
Full interior , RE001 road tyres , dry weight = 2160 pounds.

Ive had a basic read in here and there is claims of .5-.7 better 1/4 out of the bag ?

 

In terms of the actual gains via percentages, I believe you will a little more because your final drive is already the "JDM" 4.785.

What you must consider is how much you drive on a highway/motorway/freeway (whatever it is you would call it in OZ ) because while there will be a significant increase in performance, you may find it a bit tough to drive on a day to day basis if you do travel on highways frequently (due to higher constant revs).

The claims that you see are just estimations and while we would like to say you will see the same if not better, it really depends on your driving, the track surface and other variables that we have no control over.

We are confident that you will be happy with the performance advantage of close gears as it will enable you to take advantage of where your motor makes its power.

 

As you are based in Sydney, the best person to contact would be "e240" on Ozhonda as he is the owner of our "Project Down Under" and can give you a first-hand experience on what it feels like to have our close ratio gear set installed.

 

I have personally driven a Civic EG with a 192whp B18C5 mated to a JDM 4.785 transmission. The car weighed in at 2050lbs. I drove the car before installing an Mfactory 3/4/5 gearset and then drove it afterward too. There was a huge noticeable difference in acceleration gains and rpm drop. This shorter gear set was more of a change in ratio than a Usdm or a pre 98 ITR transmission because the 4th and 5th gear of a 98+ box share the same ratios with a Gsr transmission. This is conjuction with the 4.785 final drive made for a very aggressive feeling powerplant. -- It also had the same acceleration rate of a similar weight EG that was powered by a K20 type r spec with 6 speed.- quite impressive

 

Here is my input, from a d series point of view.

96 Civic DX hatchback, 2,340 pounds with me in it and a 1/4 tank
stock engine and trans. All runs at same weight, on 23.07" tires.

Stock gearing:
1-3.250
2-1.762
3-1.172
(never hit 4th)


17.584 @ 76.53
2.478 60'
1/8 - 11.178 @ 62.49


Changes:
Y8 exhaust manifold, no exhaust
Action Clutch 1MD clutch (6-puck)
Fidanza 7.5 pound flywheel
Omni Power Clutch Master Cylinder, prototype revised version, thanks Omniman
stock 1,2,5 gears
ZC 3rd (1.346)
stock 3rd 1.172 for 4th gear
SRR 4.71 final drive

16.412 @ 80.90
2.316 60'
1/8 - 10.407 @ 66.29

Changes:
EX trans
1-3.250
2-1.909
3-1.250
FD-4.250
(never hit 4th)

1/4 - 16.822 @ 78.91
2.418 60'
1/8 - 10.651 @ 64.22

Changes:
worn the hell out D16Z6 longblock
VTEC not working due to CEL
MFactory close gear set
1-3.250
2-1.900
3-1.565
4-1.259 (stock Si 3rd)
4.250 FD

60' - 2.418
1/8 - 10.240 @ 68.05
1/4 - 16.029 @ 84.88

 

well I have the Mfactory 3/4/5 gearset along with my 4.4 FD in my B16B tranny, and this this is crazy! I mean the acceleration is out of this world. The car is soooo much more faster now. I did 13.5 before and will soon retime to se where the gearset lands me

 

I've only experienced the Mfactory D-series gears, so this might not be as relevant, but they feel amazing paired with a F20b.

 

any more real-world examples ?
I am keen to find out how this goes

 

From an independent magazine review in the UK:

Vehicle: B16 Civic
3rd Gear 40-70mph: 22.7% Improvement over stock
4th Gear 40-70mph: 23.3% Improvement over stock
5th Gear 40-70mph: 16.7% Improvement over stock
Average Improvement: 21% Improvement over stock on 3rd/4th/5th Gears
Tolerance: All within Honda Specifications
Quality: As Good/Similar to OEM Honda Gears
Results: Much smoother shifting between gears, much improved (and immediately noticeable) acceleration response

From the above, you can see that you would gain an average 21% Performance Gain throughout 3rd/4th/5th gears.

And another:

Vehicle: Mildly modified UK CRX Del Sol Vti (B16) with 4.4 Final Drive
3rd Gear 40-70mph: 20.3% Improvement
4th Gear 40-70mph: 17.5% Improvement
5th Gear 40-70mph: 17.6% Improvement
Average Improvement: 18.5% Improvement over 3rd/4th/5th Gears
Comments: "After fitting the gears into my car, I went for my first drive and there seemed to be an invisible thread pulling the corners of my mouth as on shifting into third, I couldn't suppress a grin - then shifting to forth, I started to giggle"

From one of our dealers (ROTA Wheels UK):

"In terms of 'butt dyno' the gear ratio kit I bought from MFactory made more difference than the 50bhp of my ITB'd and stroked engine

If I was tuning an NA ITR again, I wouldnt even bother with the engine.."

Results from last weeks Irish Junior Rally Championship round @ Tipperary:

1 - J. Ryan/T. O'Sullivan (Honda Civic) 1h. 06m. 45s.
2 - J. Newman/D. Coyle (Honda Civic) 1h. 07m. 32s.
3 - P. Wilson/J. Kilmurry (Honda Civic) 1h. 07m. 42s.

1st Place and 3rd Place drivers are both using the MFactory Gearsets & Final Drives