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  #1 (permalink)  
Old 25 Aug 2006, 01:24 pm
Body Roll
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Default Honda I-4 smoothness

How smooth is the I4 in Fit vs Civic DX/LX/EX vs Accord vs Civic Si ?
No extolling of the virtues of the V6 anchors, please. Keep your V6
boats to yourselves.
Thanks.
P.S. Why there are no V-4 in Honda cars? No carbs - no pain. I4s are
more compact or what?

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  #2 (permalink)  
Old 25 Aug 2006, 01:37 pm
jim beam
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Default Re: Honda I-4 smoothness

Body Roll wrote:
> How smooth is the I4 in Fit vs Civic DX/LX/EX vs Accord vs Civic Si ?
> No extolling of the virtues of the V6 anchors, please. Keep your V6
> boats to yourselves.
> Thanks.
> P.S. Why there are no V-4 in Honda cars? No carbs - no pain. I4s are
> more compact or what?
>

not sure about the fit or the new si's, but the accords have harmonic
balancers and are much smoother than the standard smaller engines.
theres no smoothness advantage to a v4, and considerable cost increase.
[two heads, two cams, etc., etc.]

if you want to know the deal on what affects smoothness, borrow a copy
of the bosch automotive handbook from your local library. if they don't
have it, they can get an inter-library transfer for you. it gives
analysis of all the main cylinder configurations, their vibration modes,
and what can be done to smooth them out. then you'll see why the
dynamic balancing employed by honda on the accord works. the book's got
a bunch of math in it, but even if that's not what you want, the
diagrams show the principles very well.
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  #3 (permalink)  
Old 25 Aug 2006, 04:08 pm
John Horner
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Default Re: Honda I-4 smoothness

Body Roll wrote:

> P.S. Why there are no V-4 in Honda cars? No carbs - no pain. I4s are
> more compact or what?
>


Probably due to costs. A V style engine means two heads, the need to
join the exhaust together, etc. Also a V-4 is not inherently more
balanced than a straight 4.

John
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Old 25 Aug 2006, 08:15 pm
MAT
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Default Re: Honda I-4 smoothness


"> P.S. Why there are no V-4 in Honda cars? No carbs - no pain. I4s are
> more compact or what?


Pardon my ignorance as it's never crossed my mind, waht cars have V-4s?


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  #5 (permalink)  
Old 25 Aug 2006, 11:05 pm
Body Roll
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Default Re: Honda I-4 smoothness


MAT wrote:
> "> P.S. Why there are no V-4 in Honda cars? No carbs - no pain. I4s are
> > more compact or what?

>
> Pardon my ignorance as it's never crossed my mind, waht cars have V-4s?


Not any that I know of. In fact very few bikes have V-4 either.

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  #6 (permalink)  
Old 25 Aug 2006, 11:33 pm
John Horner
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Default Re: Honda I-4 smoothness

MAT wrote:
> "> P.S. Why there are no V-4 in Honda cars? No carbs - no pain. I4s are
>> more compact or what?

>
> Pardon my ignorance as it's never crossed my mind, waht cars have V-4s?
>
>


Years ago Ford of England made a small V-4 which was also used in some
early Saabs. It was a cute little motor, almost looked like something
off a riding mower.

I don't know of any cars since 1970 or so which have used a V-4.

John
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Old 27 Aug 2006, 07:21 pm
Matt Ion
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Default Re: Honda I-4 smoothness

John Horner wrote:
> MAT wrote:
>
>> "> P.S. Why there are no V-4 in Honda cars? No carbs - no pain. I4s are
>>
>>> more compact or what?

>>
>>
>> Pardon my ignorance as it's never crossed my mind, waht cars have V-4s?
>>

>
> Years ago Ford of England made a small V-4 which was also used in some
> early Saabs. It was a cute little motor, almost looked like something
> off a riding mower.
>
> I don't know of any cars since 1970 or so which have used a V-4.


Some use a flat-4 though, which is like a V flattened out. My '82 Subaru had
one, it was an incredibly durable engine. Lowers the center of gravity a lot
too, for great stability. Dunno if Subaru is still using them
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  #8 (permalink)  
Old 27 Aug 2006, 09:00 pm
High Tech Misfit
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Default Re: Honda I-4 smoothness

Matt Ion wrote:

> Some use a flat-4 though, which is like a V flattened out. My '82 Subaru had
> one, it was an incredibly durable engine. Lowers the center of gravity a lot
> too, for great stability. Dunno if Subaru is still using them


I'm pretty sure Subaru still uses flat-4's.
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  #9 (permalink)  
Old 27 Aug 2006, 09:09 pm
dbltap
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Default Re: Honda I-4 smoothness


"High Tech Misfit" <me@privacy.net> wrote in message
news:18jssgu03all3$.dlg@hightech.misfit...
> Matt Ion wrote:
>
>> Some use a flat-4 though, which is like a V flattened out. My '82 Subaru
>> had
>> one, it was an incredibly durable engine. Lowers the center of gravity a
>> lot
>> too, for great stability. Dunno if Subaru is still using them

>
> I'm pretty sure Subaru still uses flat-4's.


Can you say "boxer design" Subaru still uses it.

http://en.wikipedia.org/wiki/Horizon...opposed_engine


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  #10 (permalink)  
Old 27 Aug 2006, 11:46 pm
Body Roll
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Default Re: Honda I-4 smoothness


dbltap wrote:
> "High Tech Misfit" <me@privacy.net> wrote in message
> news:18jssgu03all3$.dlg@hightech.misfit...
> > Matt Ion wrote:
> >
> >> Some use a flat-4 though, which is like a V flattened out. My '82 Subaru
> >> had
> >> one, it was an incredibly durable engine. Lowers the center of gravity a
> >> lot
> >> too, for great stability. Dunno if Subaru is still using them

> >
> > I'm pretty sure Subaru still uses flat-4's.

>
> Can you say "boxer design" Subaru still uses it.
>
> http://en.wikipedia.org/wiki/Horizon...opposed_engine


According to this link Honda Land Yacht also uses a flat 6.

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