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Aitrek engines are garbage. Pretty sure they're the worst variation of the 4g63's that were vulnerable to crank walk/oil starvation. Sure you can make them work but they're not more than half the price for no reason. They're basically like the pre evo 4 engines and you have to swap so many stuff in order to make decent power. I have been seeing this idea floated alot lately. idk why people bother buying an evo if you're looking for such cheap alternatives.
Does anyone know if the airtek engine is basically the same as a evo 8 engine for block and cylinder head, i know the water pump is diffrent. But i was looking at buying a airtek engine to build a head and block for my evo 8. I just wana make sure the block and head core are basically the same for ordering rods /pistons /crank and same with the cylinder head. I cant seem to find a cheap head or block core and the jdm airteks are about $2000 for a complete engine . Is there any down falls to using the airtek engine for a 2.0 Long rod build? Seems cheaper than what people want for cores etc
I have a airtrek long block siting on my home. Ask for any picture or info and I will help as I can.
1- The airtrek turbo engine is more like an Evo 7 engine
2- camshafts, balance shafts, pistons, rods are completely different from Evo 7;
3- Block casting is the same as 7 as long as I am concerned but it has no oil jets thou;
4- crankshaft and water pump are the same as the evo 7;
5- it has no oil scraper plate but the girdle has the provisions to bolt them up;
6- didn’t take the oil pump apart so can’t say about its internals;
7- head casting is the same as the evo 7 afiac;
8- valve cover looks like a VII but is missing a couple threads for the coils;
Aitrek engines are garbage. Pretty sure they're the worst variation of the 4g63's that were vulnerable to crank walk/oil starvation. Sure you can make them work but they're not more than half the price for no reason. They're basically like the pre evo 4 engines and you have to swap so many stuff in order to make decent power. I have been seeing this idea floated alot lately. idk why people bother buying an evo if you're looking for such cheap alternatives.
I see no reason to think this way. The block and head castings are the same as the evo 7. The crankshaft part number is the same as evos 7/8/9. All belts and anciliarities are the same as the Evo 7/8. Even if the oil pump is weaker, one might just use a Evo oil pump.
I have a 01’7 and a 04’8, both completely OEM, and the engines of both cars have minor differences. And the airtrek engine is much like a 7.
Anecdotally there are people running 250-300kw on airtrek blocks but it would be good to know the main areas of weakness (I assume the pistons and rods).
Aitrek engines are garbage. Pretty sure they're the worst variation of the 4g63's that were vulnerable to crank walk/oil starvation. Sure you can make them work but they're not more than half the price for no reason. They're basically like the pre evo 4 engines and you have to swap so many stuff in order to make decent power. I have been seeing this idea floated alot lately. idk why people bother buying an evo if you're looking for such cheap alternatives.
Pretty sure you have no idea what you talking about. These are the detuned evo 7 engines. 1 to 4 have the one piece main and thrust washer design which is know for crank walk issues the airtrek is two piece just as the evo 5 to 9. Airtreks were from 2002 to 2005 basically the years of the evo 8. Airtrek camshafts are hollow which is not a pre evo 7 feature. I have heard of stock bottom end airtrek motor doing 520whp on race gas with the auto trans which did not like the idea at the time. The important take away is most of the parts in there have proven themselves in other 4g63 motors.
I have an airtrek, would have know persons who have owned them since 2009 to date. Mine got a built motor and get a 30psi boost spike on a HTA73 green each time I drive it and it is still auto.
Cams and valve spring are Airtrek specific.
Smaller throttle body (slightly)
Different manifold map/boost sensor
Smaller injectors (no resistor box / Subaru sti pink are a drop in with correct scale in rom)
smaller MAF, smaller intake pipe (same design)
same airbox
top mount intercooler (from RVR)
Td04hl-15t turbo (factory 14 psi)
different factory boost solenoid
No SAS but does have egr
Manifold similar to Evo 1-3
Different turbo dump (no O2 sensor)
Different front pipe (same shape but flanges clocked different)
different cat (has 02)
I think for the price it would be a good donor block..but not a great choice if you didn't have everything else ready to swap over
Hello There !
Apologies for bumping an old thread. But i need help
I have an EVO 4 with an Air trek engine swapped. I am using the intake manifold + Throttle body from the EVO 4 engine. The car ran / drove fine, until my TP Sensor broke. EVO 4 uses a 4 PIN clock wise TP sensor. I have been searching for a month and have not found a 4 pin one. However there are plenty of 3 pin ones from evo 7 / 8 / AirTrek are available.
My friend has an AirTrek throttle body lying around with him . I wanted to ask if i can fir the AirTrek Throttle body on my EVO 4 intake manifold ? in this way i`ll be able to use the 3 PIN TP Sensor
I have searched the web and have found No information on this . I will be v v thankfull if you can shed some light on this.
Hey anyone that has a 02-05 airtrek motor can you let me know the block casting? The list on the site is Evo specific so I do not believe they updated it for the airtrek castings.
Hey anyone that has a 02-05 airtrek motor can you let me know the block casting? The list on the site is Evo specific so I do not believe they updated it for the airtrek castings.
my casting is a GP code. Thanks!
I have an airtrek motor inside my EVO 4. There is a number written on the block. I will note it down next time i take out the car
