Give me more power

InitialD · 03-06-2005, 08:59 PM

After crusing about Bell street tonight before I picked my GF from work, I got my *** kicked by a VK commo (I believe was a worked 253 Took off WAY to quick) and a VR/VS. Now Im seriously peeved and want it to be a little quicker. The main thing ive noticed is its guttless even at high RPM.

This is the things ive noticed.
1. In 1st gear and at 5000rpm its just not pulling at all, and slowly gets more gutless the more gears it goes thru.
2. once I get to 3rd gear, its completely gutless and no matter HOW much i push on the accelerator it doesnt go any faster? like its got a major flat spot.

This is the setup
3.9 stock bottom
EF Head
EF XR6 Cam
ED MPFI manifold
Reco EF injectors & good working Fuel Reg
Redback 2.5" exhaust & Stocko 4 speed auto.
Brand new NGK plugs & TopGun leads

InitialD · 03-06-2005, 09:04 PM

ohh and another thing, cause its a EF head on a 3.9 block, ive got a lower comp then standard, is this a performance issue?

dansedgli · 03-06-2005, 09:04 PM

Yes it certainly wont help.

dansedgli · 03-06-2005, 09:06 PM

Arent the EA pistons dished as well?

NZ · 03-06-2005, 09:20 PM

lol its not another 'my cars broken post'

the ea pistons are dished but thats part of what gives them the 8.8:1 compression ratio. ef piston's do have a dish but only half as deep. i got a pic of ea comparing ef pistons somewhere

FordFan86 · 03-06-2005, 09:29 PM

Get some 3.7's. That bottom end with that head wont be helping, low compression N/A = gutless.... atleast if you turbo it, that won't be an issue :P

03-06-2005, 09:34 PM

that VK was *cough* 3.3 *cough* and packed....lol. damn it! why wont people run me?

EFFalcon · 03-06-2005, 09:37 PM

lol
mick.. i think you could start by doing performance mods ;)
take it to the drags, or chuck it on a dyno, atleast then u can see how it is.

Psycho Chicken · 03-06-2005, 09:41 PM

Bet it was a Starfire!

*cough*

*cough*

stockstandard · 03-06-2005, 09:49 PM

I have brought up the compression issue in a couple of "EF head on EA" threads but nobody seemed to think it was a big concern. I agree with EFFalcon though, get it on a dyno, get some figures and find out what is going on with the AFR and go from there.

FairmontEL · 03-06-2005, 10:04 PM

Maybe you should buy a wade cam, or some extractors if you want a bit more power. I dont think its a problem with you car its just EA's are generally not fast cars neither are any eseries really unless you do a bit to them, or its like a sprint or something.

EFFalcon · 03-06-2005, 10:11 PM

its pretty much a low compression stock EA engine.
so yeah, needs some mods to get it working

InitialD · 03-06-2005, 10:15 PM

Quote:

Originally Posted by Psycho Chicken

Bet it was a Starfire!

*cough*

*cough*

Yes I agree rob, shame my better half doesnt

Damo · 03-06-2005, 10:16 PM

can't be as slow as my car was with the 3 speed. or is it ? hmm. That would be a worry.

InitialD · 03-06-2005, 10:17 PM

Quote:

Originally Posted by stockstandard

I have brought up the compression issue in a couple of "EF head on EA" threads but nobody seemed to think it was a big concern. I agree with EFFalcon though, get it on a dyno, get some figures and find out what is going on with the AFR and go from there.

I most definitly want to get it dyno'd asap to see what its getting power wise.

I have been discussing the Low comp problem with joel (swoop) and he seems to feel that a Au headgasket would raise the comp to around stock EF? (i.e 9)

Psycho Chicken · 03-06-2005, 10:25 PM

Quote:

Originally Posted by InitialD

Yes I agree rob, shame my better half doesnt

WHIPPED!!!

haha kidding, I know how you mean.

InitialD · 03-06-2005, 10:28 PM

Quote:

Originally Posted by Psycho Chicken

WHIPPED!!!

haha kidding, I know how you mean.

Now Where did I put Mrs Psycho Chickens number...... :hihi:

Psycho Chicken · 03-06-2005, 10:45 PM

lol, don't tell her I just spent $600 on heads!

Seriously, I don't think the AU gasket would do that much, but I'll sell you a set of AU pistons and rods cheap....actually you'll need the 4.0 bottom end as well.

InitialD · 03-06-2005, 10:56 PM

Quote:

Originally Posted by Psycho Chicken

lol, don't tell her I just spent $600 on heads!

Seriously, I don't think the AU gasket would do that much, but I'll sell you a set of AU pistons and rods cheap....actually you'll need the 4.0 bottom end as well.

Now where were u rob like 4mths ago?? LOL

stockstandard · 03-06-2005, 11:48 PM

I dont think the AU gasket will do much (I could be wrong though). If you do pull the head off to change the gasket you could always have it shaved and bring the compression right up. Depends though, compression ratio might not be your problem.

Damo · 04-06-2005, 12:22 AM

you should have gone to Bell st Maccas and done a burnout. That'd be sik.

Who's XC is that ^^ looks mint.

InitialD · 04-06-2005, 12:27 AM

Quote:

Originally Posted by Damo

you should have gone to Bell st Maccas and done a burnout. That'd be sik.

Who's XC is that ^^ looks mint.

Damo im at Bell St maccas most thursday and friday nights around 7 :P

Psycho Chicken · 04-06-2005, 09:24 AM

That XC was on ebay the other week, Mick was drooling over it.

InitialD · 04-06-2005, 09:28 AM

Here is something ive noticed, If someone could shed some light on this.....

When i drive around normally, my average goes up?
when I hoon about, my average drops?

So basicly the closer i am to WOT while im driving, the lower my average is in fuel, and the lower my injector pulse is been shown? Does this mean ive got a dodgy Sensor somewhere? or a screwy ECU? (the ECU did come from PP, I wont say any more)