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Old 22-11-2011, 10:22 PM   #1
blister
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Default FD b18 b16

when fitting smaller wheels such as 10" to a b18 where have people got there final drives from and what sizes have they used
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Old 22-11-2011, 11:06 PM   #2
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Over here Watsons, you got 3.4 and 3.7, you'll need the 3.4, actually you'll need taller but theres nothing else over here than that

Across the pond you got houseman and m factory

Houseman can make what ratio you want, be prepared to pay though, m factory have got a 4.05, standard integra is 4.2, so in a nutshell a 4.05 aint worth it with 10" wheels

The Watsons 3.4 will at least give you a chance to enjoy it
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Old 23-11-2011, 01:32 AM   #3
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Hi Kam, as know you have personal experience driving a Vtec mini, would it be possible for you to clarify something for me. I hear a lot about gearing and wheel size being an issue with the Honda FD selection.
I've got a gearspeed calculator which takes into account the rolling radius plus each gear and FD and for the B18C4 gearbox, it's giving me the figures of gear speeds at the rev limiter (8600) 35, 60, 84, 111, 135 and a 5th 75mph cruising speed of around 4750rpm, which I know is high. But this similar to what you found and how was it so unbearable compared to a standard A series engine?
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Old 23-11-2011, 10:01 AM   #4
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The best gearbox (if you can find it) is from a JDM SiR-G.

It still has the 4.400 FD but 2nd-5th gears are longer.

Cruising engine speed in 5th at 70mph would be 4,265rpm on 10" wheels as opposed to 4,596rpm from a regular EG6/EK4. The MB6 gearbox would give 4,456rpm.
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Old 23-11-2011, 08:25 PM   #5
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10" wheels with S9B box seems about perfect to me (Honda guys kill for the shorter gearing in Civics etc) 138mph on 9k limiter in 5th, perfect, but I wont be using mine on the road, so I guess thats where the issue lies, cruising in 5th would be annoying.

depends what you use the car for I suppose...?
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Old 23-11-2011, 08:35 PM   #6
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All I know is with mine - a standard b16a2 (116tq) with a y21 box using watsons 3.4 FD chucked in using rovers 12 inch steel wheels (4.5") and either of my tyres 048r-a539 165/55/12 165/60/12 tyres I can nail it in first gear with no spin, it'll only spin if the steering wheel is turned, 70 in fifth sits at 4k dead on and all the gears are perfectly usable......

......but having this increase in gearing and usable gears with a b16 comes at a price, no not the watsons price but the (116tq) price, if your sitting at 70 on the motorway (or freeway for our friends across the pond) and nail 5th to overtake (or if your on a private runway...) to reach 100 you will have time to make a pot of tea add a few sugars drink it and then clean the cup after before you reach it it'll get there........eventually

If you wanna make the car drivable its pros and cons, something has to give, your b18c4 on 10's wlll be a handful, the 3.4 can only do so much

I'm gonna be using my exact above setup with the b20 (145tq) I'm getting eager to find out what its gonna be like but already know in the back of my mind that I can't nail it as before but as mine is an out and out road car then overtaking on the motorway will now be like taking candy from a baby

Its all pros and cons but all down to what you want from it and where your gonna be using it, for me being a road car it made it drivable which is kinda like the point of a road car
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Old 25-11-2011, 09:22 PM   #7
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sorry to butt in but is there anyway of fitting a six speed box to the b16a2 motor??? Surely there must be a way or a box which will fit....
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Old 28-11-2011, 12:23 PM   #8
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sorry, no.
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Old 28-11-2011, 07:33 PM   #9
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Old 03-12-2011, 06:17 PM   #10
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All I can say is WOW! Fitting a sequential gear box to a VTEC Mini would be incredible...also incredibly expensive. The gear box might have cost more than the car and engine.
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Old 14-12-2011, 12:50 AM   #11
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I have the houseman 3.47 and all gears are very useful. I have to check the speedometer against my GPS but the dials show about 3000 rpm at just a bit over 60mph. I have 215/50-13 inch tires.
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Old 14-12-2011, 01:39 AM   #12
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Its good to see another 3.4FD in use thats not from Watsons

Got any vid of yours on the move, more so from standstill just to show people what first gear is like
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Old 14-12-2011, 02:42 AM   #13
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No I don't. I should but here in the Midwest U.S. we've started to get snow and I'm putting it up for the winter.

Before I found the Houseman FD I had heard the Watson FD whined to the point of distraction. I'm not sure I'd have noticed as the JDM Type-R sounds like a trashcan full of pis'd off bees....even at cruise it's still a bit too loud. My wife calls it the worlds fastest washing machine.

I'm going to start collecting parts and doing a few mods. I'm going to add a MFactory oil cooler/filter relocation kit. I'm also thinking about replacing the radiator with a Fluidyne. No, it doesn't over heat but I haven't done a track day on it yet and I expect it would. I wanted to add a Moroso oil pan with baffles, increase the oil capacity and add a temp sensor but I'm getting mixed opinions on that. Leaks, changing the transmission brace from a one piece Type-R to a two piece non-Type R.

And of course, the endless hunt for tires....
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