4age head into my 4afe block - Toyota Nation Forum : Toyota Car and Truck Forums

splavin90 · 01-23-2007, 12:02 AM

so if i get a 4age head can i put it on my engine? i know that the firing order of the FE is something like 1432, and the firing order of the 4age head is 1234.

can i just put the 4afe camshaft in the 4age head?

big_fella6699 · 01-23-2007, 12:34 AM

im goin out on a limb here coz i havent done the swap myself but by the sounds of it u would have 2 change the ecu, coil, distributor, exhaust manifold, intake manifold, fan belt (coz the fe cams fun off each other, while the ge cams run independantly from the belt), fuel lines etc.... like i said, im not 100% but thats just what it looks like 2 me. oh and no, i dnt think u will be able 2 fit the 4age camshafts in the 4afe head as they have different intake angles, and a different cam drive assembly.

splavin90 · 01-23-2007, 12:39 AM

thanks a lot.

Bitter · 01-23-2007, 01:59 AM

cheaper and easier to get a whole 4AGE.

freakinbox · 01-23-2007, 05:23 AM

I wouldn't say cheaper... since you can get a head for $50 at a wrecker.

I still have no idea if this will give a power gain or not, I doubt it since the power difference in a 4age big port and a 4afe isn't really all that different. With the pistions being different and not being able to get the rpm of the 4age due to the weaker crank...

ghost_ryder35 · 01-23-2007, 08:41 AM

4afe block cant handle the 4age head, its like having sex with a whore, it works out for a while, and then she's gone faster than you can snap your fingers.

freakinbox · 01-23-2007, 09:26 AM

the block can handle it no problem. 4a block... thats what they share

I've heard of a 4afe crank breaking before. But I've hit 8000 rpm with mine accidentally before. Also used to take it to 7000 rpm all the time, so have a couple other people in here and their cranks didn't break.

toyotaspeed90 · 01-23-2007, 10:00 AM

uh...... what?

the 4afe with smaller internals actually shares all sizes with the early 4age..... the crank itself isn't forged (like the 4age) nor balanced as well.... but that shouldn't be a problem if you keep the stock 4afe harmonic balancer......

HOWEVER...... i would just suggest finding a complete 4age smallport.....

Flashmn · 01-23-2007, 10:59 AM

Quote:

but that shouldn't be a problem if you keep the stock 4afe harmonic balancer......

My harmonic balancer is exactly the same as the 4A-GE has.... and it was stock on my 4A-F

Quote:

the 4afe with smaller internals actually shares all sizes with the early 4age.

Yes, and the newer 4A-FE with the newer 4A-GE's

freakinbox · 01-23-2007, 11:08 AM

so my engine shares connecting rods with the early 4age?

Pistons are different?

and cranks not forged which I knew, not as good for high rpm

toyotaspeed90 · 01-23-2007, 11:31 AM

Quote:

Originally Posted by Flashmn

My harmonic balancer is exactly the same as the 4A-GE has.... and it was stock on my 4A-F

Yes, and the newer 4A-FE with the newer 4A-GE's

...... so your 4afe didn't have a harmonic balancer? just a crank pulley?

4ag's don't have balancers.....

Flashmn · 01-23-2007, 12:42 PM

well, it does have a small rubber ring that separates the outer and inner circumferences, however, took a look at a buddies older 4A-GE and it had the same pulley. Local 4A-FE's have a much heavier pulley.

Bitter · 01-23-2007, 02:47 PM

Quote:

Originally Posted by freakinbox

I wouldn't say cheaper... since you can get a head for $50 at a wrecker.

I still have no idea if this will give a power gain or not, I doubt it since the power difference in a 4age big port and a 4afe isn't really all that different. With the pistions being different and not being able to get the rpm of the 4age due to the weaker crank...

he'll need new pistons too, the 4afe pistons are dished.