Honda D Series Forum banner

1 - 13 of 13 Posts

·
Registered
Joined
·
15 Posts
Discussion Starter #1
Hi all


I proudly own a 4th gen civic hatchback with a solid and reliable D14a1 dual carb with 90hp:

D14A1[edit]
Found in:
1987–1991 Honda Civic GL and 1990 CRX (European market)
October 1989 – 1994 Honda Concerto GL (European market)
Displacement: 1,396*cc (85.2*cu*in)
Bore and Stroke: 75.0*mm ×*79.0*mm (2.95*in ×*3.11*in)
Compression: 9.3:1
Power: 90*PS (66*kW; 89*hp) at 6,300*rpm[4]
*88*PS (65*kW; 87*hp) in the Concerto[5]
Torque: 11.4*kg·m (112*N·m; 82*lb·ft) at 4,500*rpm
Valvetrain: SOHC (four valves per cylinder)
Fuel Control: Dual Carburetor PGM-CARB
Piston Code: PM2

the PM2 pistons are very nice domed, now i wonder if i can install a D16a6/7 in D14a1 block with y8 head gasket and if i will increase my CR.

it´s a straight fit ?
what dizzy to use and timing belt ?
It´s the Keihin carbs enough to increase power?

Another question I own a ED7 16i16 L3 gearbox laying in my garage I understand the gear ratios are very nice but the FD it´s 3.888 however i own a FD 4.437 from a P7 gearbox from a dual carb D14a1 Honda concerto.

will the ED7 L3 gear box be a straight fit ??

Greetings D brotherhood
 

·
\/Your Mom Was Here\/
Vibe GT
Joined
·
4,833 Posts
You can swap the FD from one L3 trans to another, you can not swap FD from a L3 trans to a trans that is a hydro clutch.

I don't understand the question of the d16a6 and your d14a1, are you trying to put a 1.6 block in your car, if so just use your head and the Y8 gasket and the d16a6 block so you can keep the carbs.
 

·
Registered
92 cx
Joined
·
934 Posts
Yep you can take a dual carb head and put it on a d15b7 or d16a6 block (or most other non-vtec blocks) if that's your question. Also yes you can use a y8 head gasket or deck the head to increase compression as well. Tuning the carbs would probably be the hard part for me atleast.
 

·
Registered
Joined
·
15 Posts
Discussion Starter #5
well my car it´s a dual carb d14a1 but i ´m considering to install a A6 heag with carbs, because a6 head should be more ported and has a more aggressive cam profile but i want to keep it dual carb in my d14a1 block with domed pistons
 

·
Registered
92 cx
Joined
·
934 Posts
The D16a6 camshaft would probably not work since the fuel pump runs off the camshaft lobe, unless that d16a6 is somehow stock with carbs.
 

·
Registered
Joined
·
5,880 Posts
re-use your current head. you wont need to worry about ports unless you actually want to rev higher, which will then put the struggle on the dual carbs to see if they are worth the effort.


having the bigger 1.6 setup itself will be a nice bump in power, and since you have carbs, you can easily richen it up a little bit
 

·
Registered
Joined
·
15 Posts
Discussion Starter #9
thanks
i´ll try it ;)
the car is very light and with short gear ratios and a 4,437 FD will be fun for sure
 

·
Registered
Joined
·
50 Posts
The best OEM cam would be the carb ZC cam.

Slightly bigger than the a6 and still has the eccentric lobe to drive your fuel pump.

It doesn't sound like you are here in the US, but I wouldn't even bother with the stock fuel pump drive. We can get basic electric fuel pumps for $40-60 USD which would run a lightly modded d14 easily. I've bought 2 Holley Reds for ~$50 on eBay. I use them for a lot of things.
 

·
Registered
92 cx
Joined
·
934 Posts
An electric fuel pump would solve the problem with running the A6 head and cam. Because the A6 head and cam both wouldn't work without the cam that has the pump lobe and the A6 head would have to be slightly modified to fit the fuel pump as well. So yes an electric pump is good and would allow you to run carbs on the A6, but I'd imagine the factory one is more reliable.
 

·
Registered
Joined
·
5,880 Posts
considering a sub-10 psi electric fuel pump is cheap as hell, reliability isnt really a worry.

especially if you can get a year or more out of them.

going electric will allow far more flexability. if the carbs are ever swapped out in the future for say, ones from a sportbike of some sort, you have a far easier chance of success with minimal mods.
 
1 - 13 of 13 Posts
Top