5E bottom half vs complete 5E

[Nich]

Hey guys. I've had my Starlet about 3 months now. I recently upgraded to a tdo4. I got a chinese GT30 with the car and I want to put it to use. However I feel it will have too much lag on a 4e engine so I need help in deciding wether or not to get an entire 5e engine or just the bottom half. I'm still in school so my budget is tight.

What are the advantages and disadvantages of both cases?

Also take it easy on me. It's my first car so I'm new to the modifying world

 

[Calum122]

There are other ways to reduce the boost threshold on a 4E engine without the expense of a 5e. I take it you got a 4efte engine? As the 5e engines are N/A, you would really want to uprate components to make it handle the bigger turbo. So in otherwords, if you're on a budget, it might make more sense to stick with the current engine and think of other ways to lower that boost threshold

 

[Jay]

Hi bud, when the rest of the world build a 5EFE to turbo we normally use the head of the 4EFTE and the bottom end of the 5EFE with 4EFTE pistons.

This gives the extra cc of the 5E with pistons designed to handle boosted life coupled with a cylinder head with stronger valve springs that can take the abuse too.

That being said I notice you are from Jamaica and your fore-runners were boosting standard 5E's straight off the cuff. There were tales of using multiple headgaskets to bring compression down and mental boost levels being used back in the day but how much was true is anyone's guess. You could ask about local as it was a much travelled path in that part of the globe.

 

[SKINY]

any more information on your Chinese turbo ? I've only had one experience with a Chinese turbo and it ended badly

 

[Nich]

any more information on your Chinese turbo ? I've only had one experience with a Chinese turbo and it ended badly

Hey. To be honest all I know it's pretty huge. A 68 back housing and I got it with a ram horn manifold. The blades are in pretty good shape and the cold side is clean as hell. I'll try to upload pics ASAP

 

[thefalls]

Hi bud, when the rest of the world build a 5EFE to turbo we normally use the head of the 4EFTE and the bottom end of the 5EFE with 4EFTE pistons.

This gives the extra cc of the 5E with pistons designed to handle boosted life coupled with a cylinder head with stronger valve springs that can take the abuse too.

That being said I notice you are from Jamaica and your fore-runners were boosting standard 5E's straight off the cuff. There were tales of using multiple headgaskets to bring compression down and mental boost levels being used back in the day but how much was true is anyone's guess. You could ask about local as it was a much travelled path in that part of the globe.

And if i remember well then some of them would shave the stock 5efe pistons also to lower compression ratio.
Their build of 5E 300whp has upset quite a few people over here who have gone forged 4E too. LOL!
It was good banter back in the days.

 

[Jay]

Aka the good old days - when halfar was downhill lol

 

[5e colin]

welcome back kid

4efte and 5efe head is the same only the valve springs differ

you need to forge that bottom end to run the chinky turbo anyways to make it come alive up booooost

10/12 psi on 5efe rods is pushing it

 

[suzieboy]

The rods could actually take 10-12 psi (even more). Its the pistons that are the weak point. Those ringlands cant really take abuse from experience.

 

[wickedep]

The rods could actually take 10-12 psi (even more). Its the pistons that are the weak point. Those ringlands cant really take abuse from experience.

yeap..this is correct..

 

[Skalabala]

Saying a 4EFTE head and 5EFE head is the same is wrong. There were different combustion chambers for different markets etc.
And stock pistons are not the weak link. The method of fuel and timing calculations and the tuner is the problem. Stock pistons can take 1.6bar of boost.

 

[Calum122]

Saying a 4EFTE head and 5EFE head is the same is wrong. There were different combustion chambers for different markets etc.
And stock pistons are not the weak link. The method of fuel and timing calculations and the tuner is the problem. Stock pistons can take 1.6bar of boost.

You're not wrong, but it is known for the ringlands to crack which is their weak points.

I joke with my friends, having had a forged car for a long time, they finally caught up forging their engines, I joke by saying, "These days it's all about going Cast. It's not the tune, it's the tuner" haha.

You're not wrong, but there is a limit to what these engines can take, better to uprate and play it safe, than to get it wrong and pay the price. Decent tuners are hard to come by.

 

[PaulRLei]

hey guys i really need some help i got a raum EXZ10 the EP95 has the same drivetrain and suspension i want to do a rear drum to disc conversion, what and where can i locate the parts

 

[Skalabala]

hey guys i really need some help i got a raum EXZ10 the EP95 has the same drivetrain and suspension i want to do a rear drum to disc conversion, what and where can i locate the parts

Gees bud, you are in the wrong thread hahaha. Your easiest will be to use GT rear brakes. Get it from a "scrapyard"

 

[PaulRLei]

I tried that already and came up empty handed but i will be making a trip to china next month so maybe i will find some parts there.