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> 7A-FTE made in Germany
post Jul 6, 2014 - 2:12 PM
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Hafkai



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I replaced the crankshaft with my old one from the first engine, had to get 2 new main bearings because the crank has different journal sizes and i replaced all rod bearings too. Still waiting for the ARP flywheel bolts and i got me a new clutch since the Exedy Stage 2 was slipping at 1,2bar boost.
The new one is a ACT XTSS, should hold up to 310ft/lbs... the Exedy was supposed to hold 261ft/lbs wich is pretty much the exact torque i had with 1,1bar.
post Jul 7, 2014 - 3:09 PM
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Hafkai



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I finally got the ARP bolts (ARP# 203-2802), torqued them to 70ft/lbs (stock bolts 58ft/lbs) and this time with loctite....

ARP compared to stock bolts:





New clutch...



I got most stuff back together, just need to torque the transmission bolts and reinstall the IC piping. The clutch pedal is definitely stiffer compared to the Exedy Stage 2 but nothing to bad.
post Jul 20, 2014 - 1:05 PM
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Hafkai



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Well... the ACT clutch is amazing, smooth engagement and seems to hold more torque than the Exedy Stage 2... maybe to much for my old transmission... years of track racing an a lot more power than stock resulted in a funny looking 3rd gear:



I replaced the transmission with a spare one i luckily had laying around, but i think i should start to look out for an alternative to the C52 ...
post Jul 20, 2014 - 8:34 PM
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enderswift



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Man, you've got some bad luck lately. Kudos for not getting frustrated with the car!


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post Apr 25, 2015 - 4:02 AM
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Hafkai



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Long time since the last post... haven't done much on the car besides trying not to destroy something wink.gif ..

The only new things are some oil-/fuel catch tanks and a new air filter box, everything build from scratch.

Since my Aeromotive Stealth intank pump died after just about 2-3.000km i put the old ST205 pump back in and let her fill the catch tank, from there an external Bosch 044 feeds the engine.

The air filter box still needs a top cover since it's kinda illegal to run open air filters in germany .... but for now i leave it open, just love the sound wink.gif ....





post Apr 25, 2015 - 8:23 AM
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enderswift



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Thats some really nice welding. good work


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post Apr 27, 2015 - 9:14 AM
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SwissFerdi

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My favorite 7A-FE. Beautiful. Real racecar.


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'97 ST \ Eibach \ KYB \ Kenwood \ Alpine \ Cusco \ OEM+
'93 MX-5 LE
'07 Kawasaki Eliminator 125
'08 MX-5 GT
post May 3, 2015 - 12:02 PM
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Hafkai



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Thanks! smile.gif .. i'm really happy how the welds look too but i still need to practice a lot

I just made a little video while testing a new ECU setup:

100-200km/h test
post Jun 25, 2015 - 3:46 PM
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Hafkai



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Again some Videos... wink.gif ..

My little 7A vs my daily S4 B5 .. poor Audi...

100-200km/h

100-200km/h in 5. gear

40km/h start in 3rd gear

And a little Video made by a friend

Toyota Celica AT200 Turbo (275 hp) 0-100 kph & 100-200 kph
post Mar 9, 2017 - 5:20 AM
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Javicillo

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QUOTE (Hafkai @ Jun 25, 2010 - 4:55 AM) *
QUOTE (celica74 @ Jun 24, 2010 - 12:57 AM) *
And i need a good piggyback or way of tuning. Any cheap ideas?

Cheap and good doesn't work wink.gif .. the e-manage blue would be cheap but not the best choice, the e-manage ultimate is more expensive but you can tune the engine pretty safe. The best way would be a standalone but that would be extremely expensive and hard to tune.

I got some nice parts waiting to get in the engine, hopefully i'm able to rebuild the engine before winter smile.gif




Where did you find the forged pistons and rings? What model or reference are they?
post Mar 13, 2017 - 2:24 PM
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Hafkai



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QUOTE (Javicillo @ Mar 9, 2017 - 11:20 AM) *
Where did you find the forged pistons and rings? What model or reference are they?

You got a PN smile.gif

Quite some time since i posted something, i haven't done much last year, i finally installed a ST205 Spoiler i got for years waiting to get some paint.. and i removed the really old EMS 8860 ECU and replaced it with a Ecumaster EMU.





Well and last month i removed the cylinder head... i still have big problems with oil flowing through the crankcase ventilation port in the valvecover when driving at the circuit, blowby is definitely not the cause of this problem so it has to be something else...
I remembered that there are oil restrictors for 4a-ge engines that are placed in the oil port that goes to the head, and since the oil return holes in the head are really small and somewhat funny placed i thought i'll give it a try and put a restrictor in my block... i hope that this will solve my problem and i really hope the restriction is not to much and i get problems with sufficient oil pressure at the head tongue.gif

And the next thing i upgrade while the head is off are the camshafts, but i have to modify some things to make them work, the intake cams got 9,5mm lift wich doesn't sound like much but the 7A is not designed for that... i measured everything and it seems like the spring retainers are very likely to run into the valve stem seals and the springs may even bottom out so i'll have to modify the valve guides and i ordered new valve springs.

Hopefully i got all parts till the end of the month and the car will be ready in the next 3-4 weeks.
post Mar 22, 2017 - 10:14 AM
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7afe_carina

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You really are courageous with that oil restrictor biggrin.gif Is the OEM oil pressure sender on the 7AFE also in the head? Then you could check the pressure there with a sensor just to be sure that there is still enough pressure up top.
I wouldn't say that 9,5 mm lift isn't much on an 1.8 liter ;-)
post Aug 31, 2017 - 12:40 PM
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Hafkai



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QUOTE
Is the OEM oil pressure sender on the 7AFE also in the head?

The pressure sender sits in the engine block next to the oil filter, but after over 1.000 miles i got no problem with the head so i think there's still enough oil pressure wink.gif

With the new cams in, the engine felt way better in higher rpms, revved pretty quick to 6500 rpm but still wasn't happy above that. The cams should be aggressive enough to rev way past 7000 without a problem so there must be something preventing a good flow.
So i started building a new intake using a ST185 throttle body, here are some pics:















And a short video of a 3rd gear pull, rev limiter is set at 7700rpm:

https://www.youtube.com/watch?v=WRI1ZIktgAU

The engine feels a little bit dull mid range since i lost some torque but it revs like crazy considering it's a 7A wink.gif ... and the gearing doesn't fit the engine anymore, 3. gear ends at 107 mph and 4. at 144 mph ... waaaay to long
post Sep 2, 2017 - 6:40 AM
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BonzaiCelica



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you could just swap in the final drive from the c56 transmission. a 4.312 ratio. or better yet find a C160 transmission.


but great build. its so unique. are you still running that cold air box set up with new intake manifold??



This post has been edited by BonzaiCelica: Sep 2, 2017 - 6:42 AM


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post Oct 31, 2017 - 1:18 PM
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Hafkai



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QUOTE (BonzaiCelica @ Sep 2, 2017 - 12:40 PM) *
but great build. its so unique. are you still running that cold air box set up with new intake manifold??

Thanks smile.gif .. the air box is still in and seems to be big enough and working quite well for now

The car finally was on a dyno and i'm very happy with the result, very nice torque curve and some good power regarding the old T28 turbo

1,1bar - 16psi


And a short 100-200km/h video

'94 Celica ST Turbo 100-200km/h

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