7afe to 7age?, Found a 4age 16v T-VIS from an MR2.. help! Options

[Tom_T20]

Hi! I have a '98 Celica AT200, and i'm searching for a camshaft kit, does anybody know where i can find it?

This post has been edited by Tom_T20: Jul 11, 2007 - 4:29 PM

[bindertch]

Are you just looking for OE replacements or performance? I don't think anyone has a production aftermarket cam but a lot of places might custom make one. This:
http://www.6gc.net/index.php?action=parts&itu=209
might be an option depending on what you are doing.

[Tom_T20]

Are you just looking for OE replacements or performance? I don't think anyone has a production aftermarket cam but a lot of places might custom make one. This:
http://www.6gc.net/index.php?action=parts&itu=209
might be an option depending on what you are doing.

I'm looking for a performance camshaft kit... but i don't know how to find it!

[Tom_T20]

My idea is to build an high performance engine, i want to replace interior parts (pistons, crankshaft, rods)and apply a turbo kit.
But i'm not sure that the engine will work fine with stock cams... what do u think about?

I think i'll use those components:

http://www.importperformanceparts.net/impo...pek-toyota.html scroll till #27
http://www.importperformanceparts.net/impo...pec_toyota.html

and this is the crankshaft:

http://www.rpmrons.com/toyota,cranks.html#1.8

[Bitter]

just use the stock crank and have it heat treated or cryo treated then balanced with the whole rotating assembly.

[Tom_T20]

just use the stock crank and have it heat treated or cryo treated then balanced with the whole rotating assembly.

Do you think that's possible to do?
And what about cams?

This post has been edited by Tom_T20: Oct 22, 2006 - 1:25 PM

[Bitter]

yes, i've never heard of anyone with a 7afe bending or breaking a crank, theyre pretty strong.

there may not be off the shelf 7afe cams, you'll probably have to get stock cams modified. just swap on a G head, you'd be better off with that.

[Tom_T20]

yes, i've never heard of anyone with a 7afe bending or breaking a crank, theyre pretty strong.

there may not be off the shelf 7afe cams, you'll probably have to get stock cams modified. just swap on a G head, you'd be better off with that.

I can't found the G 20v head here in Italy..
Can u send me one?

[Bitter]

looked on ebay? you dont need a 20 valve. any G head will be a stepup from the F. a big step.

[Tom_T20]

looked on ebay? you dont need a 20 valve. any G head will be a stepup from the F. a big step.

Like the head of 4age found in 5th gen celica ST-i? (1.6l)

[Bitter]

yes, that head would work. theres more than just the head you need tho, some electronics, a different timing belt, and a few other things. theres several how-to's around the internet.

[Tom_T20]

yes, that head would work. theres more than just the head you need tho, some electronics, a different timing belt, and a few other things. theres several how-to's around the internet.

Yes, i know.. but can't i keep the f head and cross 200-250hp with the components i listed?

[Bitter]

probably not, the F head wont flow enough air to do that i dont think.

[Tom_T20]

probably not, the F head wont flow enough air to do that i dont think.

I find out my head is different from the OEM F head... i'll post some pics of my engine

[Bitter]

you have tvis? the tvis intake ports end up being a little smaller than a non tvis intake ports on the F head. those 2 ports put together are smaller than the one large port on the non tvis F head.

[Tom_T20]

you have tvis? the tvis intake ports end up being a little smaller than a non tvis intake ports on the F head. those 2 ports put together are smaller than the one large port on the non tvis F head.

what's tvis? is it like VVT?

[playr158]

the F head can flow enough for 250.....

keep the F head and have a custom intake manifold built, along with a port and polish on the head that will always help....the crank is fine stock but cryo treating is always nice...i think pauter cut 7afe forged rod production so you'd want to contact someone to build you custom rods and pistons if your trying to go huge power....but stock rods that have been shot peened with 4age (or custom 7afe pistons) will hold up just fine...for around 200-250 (although they might not last really long...really long being like 70,000 miles)

if your going to do this i'd also look into at least honing the block if not potentially boring it out slightly to give you a nice clean wall..

This post has been edited by playr158: Oct 23, 2006 - 12:11 PM

[Bitter]

no, tvis is a system where the intake has 2 runners per cylinder and 2 intake ports per cylinder. one port is closed till about 4000 rpm so that you have a torquier low end, then the 2nd port opens up and you can pull in more air for a good topend. it basically tries to smooth the powerband so that you have a good lowend but dont choke for air in the topend. it does nothing to your valves.

the F head can flow enough for 250.....

keep the F head and have a custom intake manifold built, along with a port and polish on the head that will always help....the crank is fine stock but cryo treating is always nice...i think pauter cut 7afe forged rod production so you'd want to contact someone to build you custom rods and pistons if your trying to go huge power....but stock rods that have been shot peened with 4age (or custom 7afe pistons) will hold up just fine...for around 200-250 (although they might not last really long...really long being like 70,000 miles)

but you'd have to be running a HUGE turbo to force enough air through, and then use a BIG intercooler to keep that high psi charge cool, and then you've got alot of lag trying to spin that thing up, you'll have a powerband like a supercharger! the G gead is a much better choice, especialy if he has the TVIS F head on his 7afe, those little TVIS ports just arent big enough to move enough air.

[playr158]

you really don't need a HUGE stupercharger with HUUUGE boostage or a HUUUUGE intercooler...
you just need an EFFFFFFECTIVE setup and know what your doing.

compression ratio, fuel, type of IC, and other factors play into it

and since when did a celica come with TVIS...yea pretty sure it never did...(6gc that is)

you really wouldn't need anything larger then a T3 s60 or a GT28rs...
and no GT28rs arn't crazy huge..we run them on 1.8 dubs all the time
a nice 9.0:1 comrpession ration, forged pistons and some other necessary goods on a decent turbo should yeild good results
remember with a higher CR say 9.0:1 neighborhood you can run less boost to achieve the same amount of power as you would say at 8.0:1 BUT you have to be able to saftly tune it there...

but yes a G head is a better head we all know this but you can't just make a blanket statement saying a 7afe can't flow enough to make 250hp....have you tried? have you failed?...yea you havn't done everything possible...if you had you would know its possible...
my point is simple...200-250hp is VERY doable with a not very crazy setup on a 7afe motor...but we all know a G head is better then an F head but also takes a considerable more amount of work/time/money to do as well...i'm mearly presesnting another option

but if we start to head to a G head is better and ect...well a 3sgte flows more...puts him at his power goal..and more then likely...cheaper as well


This post has been edited by playr158: Oct 23, 2006 - 12:48 PM

[Bitter]

ok, then show me a 200-250hp 7afe thats street driven and not a dyno/strip queen. i've never seen one!

JDM, asian, australia, and maybe russian markets got 7afe's with TVIS for some weird reason.

http://www.billzilla.org/starleteng.htm theres an aussie talking about the 2 F heads there.