Thread: GTI-R with 20VE headswap

moved from other forum i guess


the VE when i got it


bare head ready to be drilled


difference in VE manifold and GTI-R ITB's



DET out for rebuild

got both engines stripped and took some measurements:-
DET
dowel holes in head - 15.1mm
head bolt holes in head - 13mm
head bolts - 11.9mm (under the head of the bolt were its slightly wider)
head bolts - 10.8mm (around thread)

VE
dowel holes - 13.6mm
head bolt holes - 12mm
head bolts - 10.9mm (under the head of the bolt were its slightly wider)
head bolts - 10mm (around thread)

basically we are going to machine the VE head to the same measurements as the DET head. 1mm out of the head bolt holes and 1.5mm out of the dowel holes.

then just for daftness i put the VE head on the block and the dowels lined up perfect as it slid over them but obviously wouldnt go all the way on as the holes arent big enough. when we got it on and looked down the head bolt holes every hole lined up perfect so its all go


they meet

on friday i ordered:-
87mm JE 8.5:1 pistons
2.0mm cosmetic headgasket
ARP rod bolts
OE crank bolts
OE head bolts
OE flywheel bolts
conrod little ends
x4 piston oil squirters

when it all arrives the block will be going to get re bored etc and the crank re ground and all new bearings and thrusts then all put back together, then i just need to get my good friends finger out and get the head drilled

2.0 mm headgasket is very thick.

What's the comp going to be with that headgasket?

it would be around 9.0:1 with standard gasket, that just reminded me, the cosmetic ones arent actually 2.0mm they are 1.8mm so the CR should be 8.5:1, only 0.2 higher than standard R engine

very nice info, keep us updated...What are the rest of the plans for this build?

x2 on build inafo

Hey man I have no expertise in this field but don't GTI-R heads flow better then VE heads??

Somebody has to know the answer to that on here.

Altho the gtir head flows the best in non ve form, ie de and det, the vvl head should easily outflow a gtir head. Also the low cam on a VVL will spool the turbo faster than gtir cams, so its win win.

exactly and that isnt to say he might not be getting the head reworked which will give him ever greater cfm flow gains

What are you talking about. He is using the VE head, the best flowing sr20 head there is. No need for head work.

gtirwezz, will you sell me your rnn14 solid lifters? I got dibs if you will.