The EX has 140hp and the LX 125hp. I have heard that the intake/throttle body on the EX is bigger and less restrictive, and that accounts for the 15hp difference. Is this true? Where can I get the EX intake manifold then?

 

I believe that is true but also I think the exhaust manifold is better on the EX. If you got a header, you would be better off though. Try a local junkyard. There should be some import ones around there. I had to go up to Cleveland to buy my Accord because I live in domestic land here...

 

the inake manifold amounts to 8-9 of the 15 hp. the other 6 hp is from both the 4-2-1 header on the EX as well and a larger lobed camshaft which allows for more valve lift and duration

 

I'd like some proof of different camshafts between the two motors.

 

Yeah if you can get the EX header for free or for cheap it'll do good for you. You probably won't feel a difference, but it flows much better than the DX/LX cast iron 4-1 manifold and single downpipe.
The '92-'93 EX engine got additional power from a dual-runner intake manifold. EX cam profiles *might* be different, but I doubt it.

 

 

well thats great that you guys doubt it, but i am simply stating the facts

i'm sorry if you cant believe them

 

Not that I don't believe you. I got the Helms right here and it does not differentiate between DX/LX and EX heads, only intake and exhaust manifolds. Where are you getting your info from?

 

the heads are identical for both models, its the camshaft that is bigger on the EXs

 

K sounds good. Ideally, I want to find an ex at a junkyard with a rear end collision and just buy the whole thing. That way I got extras of everything...


Thanks guys

 

Bigger camshaft? Are you sure you know what your talking about?

 

Give us some proof. Part numbers, cam specs? anything?

 

1992 Accord Helms.
If this were the case, the Helms would have two head sections, DX/LX and EX (US) and LX/EX and EX-R (Canada). It has but one section on the cylinder head, and I can't find anything that indicates the EX (F22A6) camshaft differs from DX/LX (F22A1) in any way.
Under the standards and service limits, specs for the camshaft, cam lobe height, valve clearance, etc are identical across the board.

 

I looked it up myself since everyone seems to be so lazy lately.

92/93 Ex cam part # from Majestic: 93712
92/93 Lx Camshaft part # : 93711

2 different cams. He is right. It took me all of 3 mins to look this up.

Edit: I didnt see your post Dave when I replied. Interesting. Part #s are different, they must be different.

 

Indeed, but that does not mean the EX head has any advantage over the the DX/LX head.

 

This happens a lot between different trim levels I think. The Majestic numbers are different. Can you get the Honda part number? That number may also differ too, but the parts may be the same.
I've seen this for lots of parts, like oil drain bolts, engine mount bolts... different part numbers, but parts are identical.

 

yes, larger...larger lobes on the camshaft- r u sure you know what your talking about smartass?

"2 different cams. He is right. It took me all of 3 mins to look this up."


[Modified by allaboutaccordz, 9:50 PM 11/1/2002]

 

Well, they may have the same lift, but the EX could have a higher duration.

 

the info i have is from chiltons manual, 1991 accord.
single intake manifold: in: 1.5167 exh: 1.5266
dual intake manifold: in: 1.5252 exh: 1.5343
they are different specs and it does make a slight ammount of power.

 

do the ECU differ also??

f22a6's (140HP) didnt come til the 92~93 release

b4 that the EX's had the f22a4(i believe 130HP) ...correct??

 

ECU is different on the f22a6...i believe it has a more aggressive fuel curve, but not enough to make a significant diff.

 

Larger lobes doesnt necessarily mean you will make more power.

Moderators, how much more sh*t am I going to have to take from them (you know who I speak of)?

 

It also has an output for the secondary intake runner bypass control... the F22A1 ECU does not.