4age header will fit my 4af... right? - Toyota Nation Forum : Toyota Car and Truck Forums

aaron7 · 05-10-2006, 09:21 AM

...right?

freakinbox · 05-10-2006, 12:32 PM

you know how long I have wondered this question? I always thought they were different... you have a 4age? take the manifold off your car and take the 4af one off and try it that way. that would tell you. but wouldn't the bends in it be off on the header since the 4age head is larger because of the cams being farther apart?

toyotaspeed90 · 05-10-2006, 12:57 PM

Quote:

Originally Posted by aaron7

...right?

no

aaron7 · 05-10-2006, 01:09 PM

Can I mod it to fit? Or do I have to wait till I get off my ass and put my 4age in there to use it?

toyotaspeed90 · 05-10-2006, 04:54 PM

you would have to cut the flange off and use a 4age flange, then rebend the pipes to fit the 4age flange....

freakinbox · 05-10-2006, 05:07 PM

that made no sense at all. he has a 4age header that he bought for a 4af. what you just said means all he has to do is bend the header a little...

aaron7 · 05-10-2006, 05:55 PM

Boy am I lost.

freakinbox · 05-10-2006, 09:49 PM

me too... with that last comment eh? ROFL

freakinbox · 05-10-2006, 09:50 PM

you have a 4age laying around in an mr2? take the manifold off and just see if the bolt pattern lines up with the 4af, I have always wondered this too

Piloter · 05-10-2006, 11:13 PM

The bolt patterns are different, at least between the 4AG head and the 7AF head...although I don't know whether the 7AFE head is identical to the 4AF. If so, then yes, the bolt patterns would be different.

94_Rolla_Guy · 05-10-2006, 11:51 PM

better yet go to a parts store ask for a 4age exhaust gasket then ask for a 4afe gasket then put them up to each other.... that will tell you with the least amount of work

thespud · 05-11-2006, 02:53 AM

Quote:

Originally Posted by Piloter

The bolt patterns are different, at least between the 4AG head and the 7AF head...although I don't know whether the 7AFE head is identical to the 4AF. If so, then yes, the bolt patterns would be different.

Bolt patterns on the 7A and 4A head are identical. Bolt patterns on a GE are different. Modification WILL be needed. Unless of course you want to buy my 4A-FE headers off me and dont mind paying shipping from Australia

cuzman · 05-11-2006, 03:42 AM

Hey spud !!! I always thought the exhaust manifold were compatable across the range!

I do know for a fack that the alltrax needs speacial secondarys off the manifold as it has to miss the cetre diff housing...its bloody tight when you have a 2.5 inch system..lol

FRom the factory i dont think there port matched so thats why i say there compatable...

As u know the factory does'nt like to change much as the cost is huge for the presses etc.?

What ya reakon........any one?

aaron7 · 05-11-2006, 06:41 AM

That gasket idea is a great idea!

BTW, spud, depending on what you're asking I seriously am interested! Shoot me a PM.

toyotaspeed90 · 05-11-2006, 01:18 PM

eh.... you need to cut off the 4age flange and weld on the 4afe flange

however, when i was thinking about this, i don't even think that would work.... the angle of the heads are different and the 4age may not fit against the 4afe and fit past the oil pan