GTIR with VVL head help-Wat all would be involved in swap a VVL head onto a 54C block while retaining the ITB's?

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bebivegeto's picture
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Joshua Frank
San Juan, Puerto Rico

Sep 25, 2010
GTIR with VVL head help-Wat all would be involved in swap a VVL head onto a 54C block while retaining the ITB's?

hello, i know it can be done but not sure a 100% how. anyone got tips on how to do the swap? wat to do with injectors? if i can even keep the ITB's? anything. thank you whoever you are lol :-D

i got this online 

What all would be involved in swapping a VVL head onto a 54C block while retaining the ITB's?

1)The exhaust manifold would bolt right on.
2)The 54C head gasket could be retained if an external oil line where tapped and made for the VVL actuators.
3)The stock mapping could be used with a standalone solenoid actuator cause the MAF sensor would pickup the extra air flow at 4800rpm plus.
4)The VVL head would need to be machined for the larger 12mm head studs.
5)The stock pistons inside are deep dish and could handle the greater lift and duration of the VVL valves.

str_motorsport's picture
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Italy

Dec 7, 2010

You have to enlarge the holes on the exhaust manifold as the ports on the mani will not aligh with the ones on the head.
you cannot use RNN14 inlet as the head flange is different and port shape is different.
You have to use VE HG.
yes you have to machine head for gtir head studs.
You have to use a standalone ecu to control the solenoids.
Be careful with lift as the valves on the ve head sit closer to pistons and will hit the pistons.
you can only use stock ve cams,unless you have valve pockets on your pistons

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Nicholas Chu
Vancouver

Jan 24, 2008

dowel pins are smaller on the ve head, would likely need to be machined out

bebivegeto's picture
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Joshua Frank
San Juan, Puerto Rico

Sep 25, 2010

What about the injectors? They are completely different also the fuel rail.Does nistune works for that head to activate vvl? Also the vvl cables to activate. David wats the VE HG stands for?

Shake and bake

Lynx's picture
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London Ontario

Dec 23, 2009

VE headgasket.  I'm building this exact swap right now.  I'm using VET pistons.

bebivegeto's picture
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Joshua Frank
San Juan, Puerto Rico

Sep 25, 2010

Please let me,know how u doing with it. If u got fb or something that would be nice that way we can communicate

Shake and bake

Lynx's picture
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London Ontario

Dec 23, 2009

No fb, pm on here is best way to get me probably.  I havn't complete my build, so there are much better resources on the sr20 boards to tap in order to figure out what you need for this.

 

Everything mentioned so far has been correct.

bebivegeto's picture
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Joshua Frank
San Juan, Puerto Rico

Sep 25, 2010

ok so i talked to my buddy here in PR that have done the swap. no is more simpler than before... the simplest way is this i guess.

ull need an RPM activated switch to activate the vvl at certain RPM.

get bigger injectors to replace the stock VE ones. ull need to unplug the resistor box cause aparently this injector for the VE are high impedance not low like GTIR stock ones. still u need to cross the wires in a way to get them working, he said is really easy. unplug, cross then somehow and boom, no cutting etc. 

and thats it bro. other than making the stud holes bigger and any other machine shop related stuff like the oil lines, thats it! 

also good idea to get Z32 maf for more air, unless u going stand alone ecu watever and make it MAP instead of MAF. but hey i said the simplest of ways. im keeping my nistune :-D

Shake and bake

bebivegeto's picture
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Joshua Frank
San Juan, Puerto Rico

Sep 25, 2010

also a link on how to activate the VVL solenoid. just in case

http://www.sr20-forum.com/tunercode/51357-vvl-activation-via-tunercode-stock-de-ecu.html

Shake and bake

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Erik
laval

Jun 10, 2012

Lynx, what camshafts will you run ? n/a cams will need a huge turbo, like a GT30, to use the high rev zone (past 7000 rpm) or it will max out

Lynx's picture
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London Ontario

Dec 23, 2009

My build is running and in the tuning stage now.  I'm runnning 16ve cams straight up at the moment.  Activating both lobes at 3500 rpm and the thing screams on 10psi (wastegaite for the moment).

My plan is to pick up some VET cams to dyno against, and also some 20v cams if I can.

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Erik
laval

Jun 10, 2012

Ok guys I'm reviving this thread. I ran into a problem when trying to install x-trail GT sr20vet 86.5mm pistons on stock gti-r
Gti-r connecting rods. Looks like it won't go fully in preventing them to go together.

Lynx, could you provide me more info on your build ?

Lynx's picture
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London Ontario

Dec 23, 2009

The main difference between VET and GTiR rods is the fact that the boss for the piston pin is ground at the top to fit into the piston.  I used a scale and did mine by hand to the same weight.

 

 

Lynx's picture
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London Ontario

Dec 23, 2009

Funny thing is, the replacement part number for the 54C rods ARE the 8H6 rods.  Even funnier is that the 8H6 rods look like they started as 54C castings and were grounds for clearance.

 

Here is a better pic.

Pulsar666's picture
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Erik
laval

Jun 10, 2012

Yeah that's what the guys on sr20forums they me to do so I sent them at a machine shop and came back grounded like this

Lynx's picture
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London Ontario

Dec 23, 2009

haha I did mine with an angle grinder