Revs

[kroozin]

I have been reading about n/a tuning and one of the things i see with the 4age engine tuning is making it rev higher. How could i make the 4E rev higher, i see trd do a 4age that revs to 12k, im not sure how they manage this, i think its so do with a shorter block. Anyone have any ideas of how to make the 4E rev higher ?

[Tintin_SR]

I have been reading about n/a tuning and one of the things i see with the 4age engine tuning is making it rev higher. How could i make the 4E rev higher, i see trd do a 4age that revs to 12k, im not sure how they manage this, i think its so do with a shorter block. Anyone have any ideas of how to make the 4E rev higher ?

there was allot of tok bout this bout a month back but nowt happened, was people thinking bout using a rola ecu and stuff have a look bout bud

[dave-gtturbo]

To make a good naturally aspirated high revving engine you'd need a lot of internal work (I'm not sure you'd ever achieve over 10k more than once though lol) You'd need everything forged/balanced/lightened etc, and a good new ECU mapped and setup.

Much easier just doing a turbo'd lump transfer, probably more drivable too mate... If you want a smaller increase on the rev limiter, any piggyback ecu can deliver this, and probably add a good increase in power too, mated to (say) a Glanza S or Starlet Gi inlet manifold ;) that should see ~100bhp

Dave

[Rich]

http://www.austarletclub.com/forums/index.php?showtopic=7449

This link shows a quick mod that can be done, I was thinking about this but would need another ECU incase I fudge it up.

Them Aussies have a lot to teach us about DIYage

Rich

[kroozin]

he says the engine bounces at around 6700-6800, i assume this means the valves hit the piston head?? how could you stop this ? i know the 4age doesnt bounce, maybe i should just stick a 4age in eventualy but thats another thread.

[nic1.3]

he says the engine bounces at around 6700-6800, i assume this means the valves hit the piston head?? how could you stop this ? i know the 4age doesnt bounce, maybe i should just stick a 4age in eventualy but thats another thread.

i think that he means that the valves in the head bounce at 6700 to 6800 rpms.

what this means (i think) is that the springs on the valves in the head are not strong enough to keep the valves closed at the higher revs... meaning that the valves will spontanteously open of their own accord....Not Good.....

[ste91]

he says the engine bounces at around 6700-6800, i assume this means the valves hit the piston head?? how could you stop this ? i know the 4age doesnt bounce, maybe i should just stick a 4age in eventualy but thats another thread.

Read the section on valves and you'll see: http://www.carbibles.com/fuel_engine_bible.html

[Rich]

Yeah just get some cruise vavle springs... are fte cams the same as fe cams?

[StarletRick]

yep.

springs are diff though.

[kroozin]

hm.. i read it but i dont understand it, ill give it another read. i asume i need stronger springs tho. My mate tom just suggested buy a 4efte head, will it fit ?

[Rich]

Yes it should fit its the same basic engine, it also has a biger oil breather.

[Guest Enzo]

yea the na valve springs start floating at around 7k so some fte ones would suite,

[Rich]

yeah my car definatly needs more than 6.2k its pethetic

[kroozin]

hm... so a 4efte head is a direct fit? what do the 4efte rev to ? and is there a better way to raise rev limit other that soldiering in a crystal?

[Guest Enzo]

yea you can buy a stand alone revlimiter with shiftlight, there are a few outhere

and yea the 4efte head is a direct fit, they came out the factory with the redline set to 7200-7800.

but the best head would be the 5e-fhe as the cams have slightly more lift.

[Big_T-SR]

You COULD go for the full conversion, but it depends on how much you're willing to spend.. because, once you've raised the rev amount, how close are you getting to the limit of your engine.. I went for the full conversion because the 4age has much more tuning potential and its light so handling is still as good as it was. Depends on what you want matey.

[kroozin]

huh? so a 5e-fhe head fits direct?? man im not to up to parr with my toyota 4e and 5e engines, maybe just stick 5e cams in a 4e or just get some aftermarket cams

[kroozin]

You COULD go for the full conversion, but it depends on how much you're willing to spend.. because, once you've raised the rev amount, how close are you getting to the limit of your engine.. I went for the full conversion because the 4age has much more tuning potential and its light so handling is still as good as it was. Depends on what you want matey.

well at the moment im only 16, hoping for an sr at 17, planning on keeping it for a while and gradually tuning it as i go. I know i cant do major mods to start with so basic mods for me are things like a rolla mani, and 4-1 or 4-2-1 manifold, suspention gear e.t.c. after i get rid of the starlet im after an ae86 or skyline anyway.

[Big_T-SR]

O, i c, well good luck to you mate, hope you find the answers your seeking. good choice of cars for you to go for aswell

[Guest Enzo]

yea if you get stuck in about them they they are pretty simple cars to work on compared to some others out there.

[kroozin]

so fitting the 5e-fhe head will get me what?

Better cams

Stronger springs

and a SAFE rev limiti of 7000+RPM ?

edit: changed to 5e-fhe head, thanks Rich.

[Rich]

5e-fhe head a normal 5e head is just as worse.

[kroozin]

i dont understand how the 1.5 fits the 1.3. Does the 5e-fhe engine have a longer stroke ?

[Rich]

Yeah pritty much, something like 10mm longer stroke thats the only difference.

5e-fe is same as 4e-fe

5e-fhe is better..

[kroozin]

thanks, what would i declare this as a mod just induction ?