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7AFE + 4AGE head + turbo ...Anyone ?



 
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Uzelac
Bunta



Joined: 07 May 2008
Posts: 843
Location: Zemun, Srbija

1985 Toyota Corolla AE86 (early Levin)

PostPosted: Tue Aug 31, 2010 5:11 pm    Post subject: 7AFE + 4AGE head + turbo ...Anyone ? Reply with quote

I've seen that people always change pistons and con rods when going to 7AGE conversion because of low CR.
But, what if going turbo ?

stock 7AFE
+ 4AGE head and stock 4AGE intake
+ custom exhaust
+ turbo
+ some custom ECU
+ some injectors

Sounds like easy 180-200 bhp.
Can 7AFE bottom handle that kind of output ?

What have i missed ? Smile

Thanks, regards

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NoHachi
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Joined: 07 Sep 2004
Posts: 2999
Location: Delft - The Netherlands


PostPosted: Tue Aug 31, 2010 5:22 pm    Post subject: Reply with quote

Take a look in Australia...veeery popular setup there, though you usually see them with some kind of 20V head. HP output claimed is around double of what you are saying (300hp+) with no problem with the flimsy stock 7A conrods.

Then again ozzies might have a different understanding of what a problem is Smile


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Uzelac
Bunta



Joined: 07 May 2008
Posts: 843
Location: Zemun, Srbija

1985 Toyota Corolla AE86 (early Levin)

PostPosted: Tue Aug 31, 2010 9:07 pm    Post subject: Reply with quote

Friend said that when going to 7AGE you need different pistons because with original you end up with low CR. Hm.. but it can be a good thing if going turbo Smile.

Since i have really good experience with PGM-FI i have around 1000e in head for these 180+ hp.

I see that problem can be transmission, especially gearbox, since this engine can easily push 250nm which is twice the stock 4AGE.

Still worth considering, will try to find some links/experiences Smile

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Project D
Bunta



Joined: 05 Dec 2006
Posts: 831
Location: France

1987 Toyota Corolla AE86 (late EU)

PostPosted: Wed Sep 01, 2010 1:26 am    Post subject: Reply with quote

4AGE pistons fit the 7AFE conrods Wink
(Finding high CR piston for 4AG is not realy a problem)

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4000GT
Takumi



Joined: 25 Jan 2009
Posts: 433
Location: Christchurch, New Zealand


PostPosted: Wed Sep 01, 2010 7:40 am    Post subject: Reply with quote

I know a few making over 450WHP locally with the 20v head though.
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Uzelac
Bunta



Joined: 07 May 2008
Posts: 843
Location: Zemun, Srbija

1985 Toyota Corolla AE86 (early Levin)

PostPosted: Wed Sep 01, 2010 9:21 am    Post subject: Reply with quote

Project D wrote:
4AGE pistons fit the 7AFE conrods Wink
(Finding high CR piston for 4AG is not realy a problem)


I know that 4AGE pistons fit and make CR higher but i would prefer stock 7AFE pistons with lower CR when going turbo Smile

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NoHachi
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Joined: 07 Sep 2004
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Location: Delft - The Netherlands


PostPosted: Wed Sep 01, 2010 10:26 am    Post subject: Reply with quote

You'll have a hard time hitting 180hp with 1000e reliably, but its possible if you are willing to scavange parts on ebay.

Maybe 200 for a turbo, 100 for intercooler, 100 for piping, 75e for fuel pump, 150e for injectors, 300 for header, 300e for downpipe and exhaust etc. Cost of the block will be another 100e? Hmz thats already way over 1000e with cheapo prices. I think a swap to a turbo block would be cheaper (e.g. 3SGTE or CA18DET->cheap!)


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Uzelac
Bunta



Joined: 07 May 2008
Posts: 843
Location: Zemun, Srbija

1985 Toyota Corolla AE86 (early Levin)

PostPosted: Wed Sep 01, 2010 11:50 am    Post subject: Reply with quote

NoHachi wrote:
You'll have a hard time hitting 180hp with 1000e reliably, but its possible if you are willing to scavange parts on ebay.

Maybe 200 for a turbo, 100 for intercooler, 100 for piping, 75e for fuel pump, 150e for injectors, 300 for header, 300e for downpipe and exhaust etc. Cost of the block will be another 100e? Hmz thats already way over 1000e with cheapo prices. I think a swap to a turbo block would be cheaper (e.g. 3SGTE or CA18DET->cheap!)


I have a lot of parts at hand to try, including turbo, various intercoolers, injectors, fuel pump....and friends willing to help.

Things needed to be done is exhaust header, piping...

Different block = different mounts, transmission...

Just need an opinions right now, this is just in idea stage at the moment.

Thanks for help

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doggy
Takumi



Joined: 20 Oct 2008
Posts: 419
Location: Lithuania


PostPosted: Wed Sep 01, 2010 3:44 pm    Post subject: Reply with quote

i had 7AFE turboed in my celica long time ago for around a year - running at 1bar of boost - making 209hp and 290nm - this engine had NO PROBLEMS with the boost what so ever! even with 0.7bar - it was running 160hp on 95 fuel!

If you gonna go with the 7AGTE - 200+ hp will be more then easy - cuz 7A head is restrictive and with 4A head you will have more flow.

my 7AFTE was running totaly on stock internals and even with the stock headgasket - and it done 15K km - then i sold the turbo kit to another guy - who did with STOCK 7A around 20K without big problems... and all this was running on greddy Emanage - not even a normal Stand alone...

heres the setup:
AE86 : Technical > 7AFE  4AGE head  turbo Anyone

Heres the Video 1.2.3 gears:
AE86 : Technical > 7AFE  4AGE head  turbo Anyone

And heres the 2 gear rolling start:
AE86 : Technical > 7AFE  4AGE head  turbo Anyone

With 1000e in your hands - i dont think you will be able to do a decent setup - but its a good start Wink


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eight-six
Takumi



Joined: 23 Aug 2005
Posts: 224
Location: South West UK


PostPosted: Wed Sep 01, 2010 4:16 pm    Post subject: Reply with quote

Can anyone confirm how differently the 7afe bottom end revs when compared to the 4age? I have read that due to the longer stroke its not as eager to rev as the 4age.

Also how fragile are the 7afe rods? Again I hear all sorts of reports that they are made from paper.

Essentially just wondering if a 7age will be able to replicate the 4age for revability but adding some much needed torque to the mix?


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Uzelac
Bunta



Joined: 07 May 2008
Posts: 843
Location: Zemun, Srbija

1985 Toyota Corolla AE86 (early Levin)

PostPosted: Wed Sep 01, 2010 4:20 pm    Post subject: Reply with quote

eight-six wrote:

Essentially just wondering if a 7age will be able to replicate the 4age for revability but adding some much needed torque to the mix?


I presume not, rev limit people are talking about is 7000-7500, 8000 for best setups.
With turbo, it will go even slower.... not so 4AGE.

On the other side, 200+ hp.. something 4AGE will do only after very costly operation.

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doggy
Takumi



Joined: 20 Oct 2008
Posts: 419
Location: Lithuania


PostPosted: Wed Sep 01, 2010 8:07 pm    Post subject: Reply with quote

7AFE os not REV happy at all - on stock - it has 6200rev limiter - and i had a chance to play with all motor 7AFE (wich was balanced and etc etc etc - with lightened flywheel and so on) and it was reving to 7K rpm - with HUGE efort... so no chance to compare it to 4AGE... but once you go turbo - it will be totaly different...

4A rods (especialy GZE or REDTOP ones) are like 2 7A rods Very Happy so go figure Very Happy But you can get forget 7A rods for around 400-600$.


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Sambo
Itsuki



Joined: 26 Aug 2010
Posts: 24
Location: Auckland, New Zealand


PostPosted: Thu Sep 02, 2010 8:23 am    Post subject: Reply with quote

http://forums.toyspeed.org.nz/viewtopic.php?t=59730&highlight=

Obviously has a slightly bigger budget, but food for thought!

337kw AE92 levin. It is street driven and does a 10.88 1/4 mile, not bad for a fwd!

http://forums.toyspeed.org.nz/viewtopic.php?t=66472

Another in a KE20

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