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Old 11-12-07, 13:07   #16 (permalink)
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ill have to get back to you on that
the numbers on the honda shouldn't be hard but the f8 is a little trickey
NSXR do you still have the f8#'s

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Old 11-12-07, 13:21   #17 (permalink)
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I had the engine code wrong for the honda rod

D16A1
  • Found in:
      • 1986-89 Acura Integra (USA)
      • Displacement : 1590 cm³
      • Bore and Stroke : 75 mm X 90 mm
      • 1986-1987 Compression : 9.3:1 1988-1989 Compression : 9.5: 1
      • 1986-1987 Power : 115 hp (86 kW) @ 5600 rpm 1988-1989 Power : 105 hp (78 kW) @ 5600 rpm
      • 1986-1987 Torque : 100 ft·lbf @ 3500 rpm 1988-1989 Torque: 95 ft·lbf @ 3500 rpm
      • Valvetrain : DOHC
      • Fuel Control : OBD-0 MPFI

1988 MX6 N/A M/T -getting a new heart. Check it out http://www.mx6.com/forums/showthread...ferrerid=35300
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Old 11-12-07, 14:45   #18 (permalink)
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The F8 DOHC to me reeks of an after thought by mazda....

It seems more like a cut down FE3....they look as though they made it as cheaply as possible, trying to change as fewer parts as possible from the FE3.

It may have had something to do with Japanese taxation laws where tax is proportional to engine size.

I dont think the F8 DOHC was ever meant to be a main stream engine like the honda one, but rather one for the cheapskate / low volume end of the market.

They probably would have quite happily used an F6/ F8 SOHC, but maybe they had trouble getting it past JDM emission laws at the time.
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Old 11-12-07, 15:30   #19 (permalink)
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Quote:
Originally Posted by chief tool View Post
they look as though they made it as cheaply as possible, trying to change as fewer parts as possible from the FE3.
thats the case with almost all automotive stuff. why not destroke it? how is it any less good than say a bp?

Quote:
It may have had something to do with Japanese taxation laws where tax is proportional to engine size.
quite probably.

Quote:
I dont think the F8 DOHC was ever meant to be a main stream engine like the honda one, but rather one for the cheapskate / low volume end of the market.
why not? they've produced many thousands of them like everything else. they certainly arent for the cheapskates. there were sohc ones available along side at the same time.

Quote:
They probably would have quite happily used an F6/ F8 SOHC, but maybe they had trouble getting it past JDM emission laws at the time.
as far as i know the f6 is only available in the b1600. do you know of other apps? as stated f8 and fe sohc were available out of japan at the same time.

Mazda Capella 1989 (used, imported, new): pics, specs, performance

note the f8 sohc, f8 dohc, fe dohc, b6. the trans used for the b6 would have supported a bp too, and they could have stuck it in with zero hassle.

why they didnt i know, but having a short stroke big bore f8 is going to be smoother than a small bore long stroke bp. maybe it was nvh ?

fred.

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Old 11-12-07, 17:22   #20 (permalink)
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I was just trying to say the honda one was a bit more purpose designed / built than the twin cam F8

Ahhh the F6 what an ugly duckling motor....they were an option on the GC in japan, south africa and europe....

I bought one from an import wrecker a few years back as a desperation motor..My GC was up for rego and it was burning more oil than petrol...i didnt have time for a rebuild, so I bought the cheapest thing that I could find that would make the car run...in a GC coupe, it wouldnt pull the skin off a rice pudding! It ended up being in the car for 3 years, when It was only meant to last a few weeks (long story) I tried all sorts of things to make it go better (all the usual NA tricks) no avail...I did advance the cam a bit, it shifted the torque down a bit to make it more driveable!

Apologies for getting off topic.
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Old 11-12-07, 21:08   #21 (permalink)
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Actually an F8 would be more comparable to the Honda F-blocks (yes, ironically Honda and Mazda both had F blocks which were the same class of block for each of them)

F8-DE would be comparable to F18A
FE-DE would be comparable to F20A
F2 to the F22 etc
Honda did the exact same thing with those engines by "cutting down" the stroke.

D16 is comparable to Mazda ZL or ZY or whatever
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Old 11-13-07, 3:23   #22 (permalink)
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Quote:
Originally Posted by lundgren420 View Post
NSXR do you still have the f8#'s
Yes, here ...

Mazda Capella Wagon 1994, SV Grade - specs and pics at AMAYAMA.COM

So it is 16mKg (115 Lb.ft) for the F8-DOHC for the torque.
The FE-DOHC Has 18mKg

Peace
NSXR

Last edited by NSXR : 11-13-07 at 3:27.

Car #1: '91 626 2.2i 12V TURBO 4WD Hatch (Blown tranny )... Car #2: '91 626 2.0i 16V 4WS Cpe (Blown Headgasket)
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Old 11-13-07, 6:16   #23 (permalink)
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the d16a1 is also known as the dohc ZC jdm motor. they can do about 300 hp. but thats there limit. the rod's are obviousely the weak point.

the d16a1 is definitely the unloved d series. most die hard honda guys will argue its existance. being that most are dumb, and have no idea there was ever a dohc d series.

i used to own a 89 integra with a d16a1, and have built a d16a1 swapped civic hatch, and also have done a few D series hybrids using parts of the d16a1. i like the motors alot, but all in all, its still a honda

~ChiPoC~

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Old 11-13-07, 10:50   #24 (permalink)
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Honda Civic 1989 (used, imported, new): pics, specs, performance

hmmmmmmmmmmmm

i'm wondering about the accuracy of that, i've seen D series engines all close and personal, and zc engines. the zc is a nice little engine.

zc :

d16 :


this may be a popular misconception because the d16 image is called zc.jpg
i'm no honda expert either, but...

the spark holes on the WIDE zc head go down the middle and appears to be a proper dohc engine, whereas the d16a seems to be a sohc rocker based 16v with the spark holes offset and on an angle.

correct me if i'm wrong, and i may be, but give good reasoning and links :-)

fred.

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Old 11-13-07, 14:41   #25 (permalink)
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by you just saying d16, there's both sing and dual ohc's of d16's.

the d16a1 spicifically is a dohc 1.6 liter. the dohc zc is the same motor as a d16a1 with more aggressive cam's, higher compression pistons, and a slightly different intake manifold.

for reference, look at any engine bay over on 1gteg.org (1st gen integra spicific forum)

~ChiPoC~

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Old 11-13-07, 15:04   #26 (permalink)
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d16a1 is the mill from the original integra. that was a nice little engine and they kept it around in japan as the ZC with a higher tune
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Old 11-13-07, 15:06   #27 (permalink)
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OK enough about the honda engine the point of the comparrison was to show the durability of mazda rods not discuss the gieneoligy of honda engines, drop it. Whewww I feel better know.

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Old 11-13-07, 15:11   #28 (permalink)
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Quote:
Originally Posted by lundgren420 View Post
OK enough about the honda engine the point of the comparrison was to show the durability of mazda rods not discuss the gieneoligy of honda engines, drop it. Whewww I feel better know.
thank you for saving the world, powdered toastman. i'm glad that we realised that comparing a d series to a mazda f series is apples and oranges
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Old 11-13-07, 21:03   #29 (permalink)
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actually thinking about honda and mazda engine codes...


F series- F series
B series-B series
K series- K series

thats kinda wierd..... i never noticed that

~ChiPoC~

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Old 11-15-07, 4:16   #30 (permalink)
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the mazda b6t exhaust manifold is often used on handa engines to yuro them only need to file two holes i believe on the d16 i think or maybe zc not sure
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