4AGE block differences explained (incl. some eyecandy)
02-12-2013, 05:17 PM
Post: #31
4AGE block differences explained (incl. some eyecandy)
[Walaki]D`Lair Wrote:
Alex170984 Wrote:This has already mangled my melon

Is this why perhaps my other 4age seemed a hell of a lot more responsive because it had higher comp pistons in it?

Am I really going to be able to make 150+ hp with my mods with these piddly pistons in comparison to high comp?

Turbocharge the fuck out of it! Thumbs up! Thumbs up!

Nah it'd ruin the driveability of the car - supercharge yes, turbocharge no.
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02-12-2013, 08:39 PM
Post: #32
4AGE block differences explained (incl. some eyecandy)
Alex170984 Wrote:
[Walaki]D`Lair Wrote:
Alex170984 Wrote:This has already mangled my melon

Is this why perhaps my other 4age seemed a hell of a lot more responsive because it had higher comp pistons in it?

Am I really going to be able to make 150+ hp with my mods with these piddly pistons in comparison to high comp?

Turbocharge the fuck out of it! Thumbs up! Thumbs up!

Nah it'd ruin the driveability of the car - supercharge yes, turbocharge no.

That is exactly my fear too...so I bought an SR20DET Big Grin Big Grin Big Grin :mrgreen: :mrgreen: :mrgreen: :E

AE86 GT - SR20DET BlackTop //// Trackday beater
Citroen C4 Coupe VTR - 1.6HDi //// Streetcar
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02-12-2013, 09:23 PM
Post: #33
4AGE block differences explained (incl. some eyecandy)
Not so much candy.... but factory service manual info never the less

Rod clearances AE86 and AE92
[Image: AEU86 AE86 - 4AGE block differences expl... eyecandy)]

Rod Clearances AE111
[Image: AEU86 AE86 - 4AGE block differences expl... eyecandy)]

Mains...

AE86
[Image: AEU86 AE86 - 4AGE block differences expl... eyecandy)]

AE92
[Image: AEU86 AE86 - 4AGE block differences expl... eyecandy)]

AE111
[Image: AEU86 AE86 - 4AGE block differences expl... eyecandy)]

Dan -

You can |Sad .... OR you can ask for help!!!

OST Porting service - http://hachiroku.net/forums/showthread.php?t=19991
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02-12-2013, 11:17 PM
Post: #34
4AGE block differences explained (incl. some eyecandy)
Coming along nicely, although I wasn't a big fan of club4ag still a lot of info has been lost since it crashed.

AE86 ex-daily
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02-12-2013, 11:25 PM
Post: #35
4AGE block differences explained (incl. some eyecandy)
Yes i had alot of info bookmarked there,should have saved it to the pc

I will take out the engine/crank in the weekend and take pictures then,
not possible right now.
Should lift the mystery arround hybrid 4AGE from late 1986/1987 a bit Thumbs up!
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02-18-2013, 12:00 PM
Post: #36
4AGE block differences explained (incl. some eyecandy)
Due to realising that I have indeed got 9.4:1 low compression pistons – I am yet to double check if I even have a 7 rib block – as I just assumed it would be!

Did the engines which these pistons were used in, run TVIS?

My TVIS did not work even though I swapped over two manifolds – it could just be a loom fault however.

Could someone clear that up for me poss?
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02-18-2013, 12:10 PM
Post: #37
4AGE block differences explained (incl. some eyecandy)
Alex170984 Wrote:Due to realising that I have indeed got 9.4:1 low compression pistons – I am yet to double check if I even have a 7 rib block – as I just assumed it would be!

Did the engines which these pistons were used in, run TVIS?

My TVIS did not work even though I swapped over two manifolds – it could just be a loom fault however.

Could someone clear that up for me poss?

All bigports were running TVIS. Simply put the TVIS is based on 4 parts:
the flaps with actuator, vacuum canister, vacuum hoses and trigger solenoid.
Obviously if any of those are faulty or wired/connected wrong way it won't work. Also a non TVIS ecu is a possibility.

AE86 ex-daily
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02-18-2013, 12:28 PM
Post: #38
4AGE block differences explained (incl. some eyecandy)
Its not the ECU as that is still the original supplied with my MR2.

I did swap a working tvis manifold from my old mr2 engine onto this one and it didn't work, so it must be a loom fault.
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02-21-2013, 11:35 AM
Post: #39
4AGE block differences explained (incl. some eyecandy)
Mercifully I do indeed have a 7-rib block!

So, if I have low comp pistons does that mean i have a low comp engine?

[Image: AEU86 AE86 - 4AGE block differences expl... eyecandy)]
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02-21-2013, 11:41 AM
Post: #40
4AGE block differences explained (incl. some eyecandy)
the block has technically nothing to do with compression - so yes low comp pistons equal low compression Wink

AE86 ex-daily
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