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Turbo Charging My Aex 8v Engine

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7.6K views 55 replies 22 participants last post by  Mike  
#1 ·
well lads just need some info on manifolds nd all what turbo manifold will fit an aex 8valve head im thinkin about turbo charging my engine seen one guy on the net turbod his aex and got 137bhp from it with a turbo and exhaust with front mount and would anyone have a turbo manifold too suit my head
 
#4 ·
im not bein igorant if i wanted to put a different engine id put in a different engine im wantin to turbo charge my engine to see what power id get i have seen it succesfully done on the net and i want to do it with my engine and it wont cost much to do as i will be buying second hand parts and doin the work myself and id say around €500/€600 would do it so if anyone can get me a engine cheaper than that i will change the engine
 
#5 ·
those AEX 1.4 motors are grief -they burn often gallons of oil after 80/90 thou miles -stem oil seals usually; if you are planning on throwing lots of coin at it and fitting a turbo, you'd nearely want to strip the entire engine down, a rebuild with a rebuild kit checking everything for tolerances/wear...
In short I wouldnt bother!!
 
#7 · (Edited by Moderator)
it will be pointless really 1.4 aex was 60bhp standard
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itd be better dropping in an abf or 16v in the long run
 
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#9 ·
why would i do that when for a manifold i can cut my own flange off and weld a garret flange on to it and make my own down pipe and intercooler pipeing and as for a boost controller i can get a mechanical 1 and run a boost gage and for fuel all i need to do is change the fuel pump get injectors out of a bigger cc engine and run a mechanial fuel pressure regulator
 
#10 ·
sure it's your car. i'd say chance it and see what happens. a turbo form a starbo/glanza would be spot on i'd say
i'd keep the pressure fairly low though.
post up some pics
 
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#14 ·
How are you going to make 137 BHP with only 5-6 PSI of boost?

As far as i remember a 1.8 20vt AGU engine only makes 150BHP @ 7 PSI

An abf conversion can be done very cheap, Less than €500 if you play your cards right
 
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#16 ·
by the sounds of things, you just want to do it as a personal project so go for it!
I don't see the point though as it seems like a lot of work and money for only 137bhp. a mk2 16v will be just as quick and ABF's are 150 before you start modding. but if your addiment...i salute you

Is the aex exhaust manifold tubular steel or cast? welding cast is a dodgy business and I'd be surprized if it will stand up to the heat, weight and vibration very long.
What turbo would you use? the only small engined turbo I can think of is a glanza.

What injectors do they use?

Do you plan on using the standard ECU?
You will need a MAP sensor to get it to run any way smooth and at very least a Wideband Lambda kit so you dont melt the yoke! I just bought a Tech Edge one, hurt me at €300 so that would blow your budget.

I really think your mad to think about turbo charging an engine with 194k on it, pick up a low miler and you can fit the turbo etc to it in the garage before you rip up the car.
 
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#18 ·
Compression ratio? standard or lowered? you'd need a sandwich plate or 2 headgaskets...which means a headset aswell
 
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#19 ·
As said before, ABF. its the mk3 2ltr 16v, 150bhp standard. do some looking for that, a crashed gti is what you want and rob the fuel pump and brakes while your there
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#22 ·
QUOTE (caleb @ Sep 13 2010, 05:32 PM) <{POST_SNAPBACK}>why would i do that when for a manifold i can cut my own flange off and weld a garret flange on to it and make my own down pipe and intercooler pipeing and as for a boost controller i can get a mechanical 1 and run a boost gage and for fuel all i need to do is change the fuel pump get injectors out of a bigger cc engine and run a mechanial fuel pressure regulator

You'll need a piggy back ecu to control the timing, and some sot of fuel management to, an fmu works for low boost set ups.
 
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