Mk1 vtr bottom end with mk2 head?

[basra]

I'm modifying my 'dog slow' mk1 engine i currently have in my Stock hatch race.

I'm wishing to install a mk2 head on to my mk 1 bottom end. Can this be done? would i need to buy mk2 head gasket set instead of mk1? Would i have to use mk2 ancillaries inlet and exhaust manifold? Also i have to use a mk2 ecu as well?

Apologies for all the questions

Thanks Matt

[greyjasper51]

There are 2 mk 2 heads, the mk2 and mk3... Mk3 is illegal for stock hatch... And its just a straight swap mate

[basra]

Is there part numbers on the heads to tell them apart from mk2/mk3?

[greyjasper51]

Yeah on the mk3 it has z07 vertically on the right side of the head

http://img.tapatalk.com/1f521730-d711-e60f.jpg

[basra]

Just looked through google apparent difference is ecu plug, 3 way suggest a later mk2 head? Ie mk3 in the regulations.

[basra]

Yeah on the mk3 it has z07 vertically on the right side of the head

http://img.tapatalk.com/1f521730-d711-e60f.jpg

:y: star

[greyjasper51]

http://img.tapatalk.com/1f521730-da4d-67e6.jpg

Also that that goes from the wall to the bolt, they are what can be seen from the head without taking it off...

[basra]

To determine a 'mk3' head?

[basra]

Checked head on the engine which I'll use and it has ZO2 stamped. Checked through google and suggest an early mk2 1999 period. So appears to be legit in regards to the regulations.

Are head gasket and Cambelt kits the same for both mk1/mk2 engine ?

[greyjasper51]

Yeah its quite a common head in stock hatch, its legal and good :-) yeah im 99% there both the same mate, just double check with local motorfactors tho :-)

Thats the cross over head if your interested, used on single plug ecu's :-) as far as im aware all 3 plug ecus have the illegal head

[jeffchiz]

You can tell from inlet spacing the early silver top engine uses a port spacing of 00-00 (which is what your black top engine uses) and the later silvertop head has a spacing of 0-0-0-0

After the price of a new headgasket kit will be cheaper and quicker to just buy the newer engine vtr engines are 10 a penny, only thing I can see being a problem is that your engine should use a fuel return and the later one doesnt if you can use your original fuel rail then all is good

If you did change the engine stick to one out of a mk1 vtr as it'll be plug and play any engine/loom out of the mk2 iirc won't fit whether its a single or triple plug as the chassis plugs should be different

[blackie_2k5]

Really don't see the point in what your doing

Both of the heads you looking at are for 90bhp engines, only down side is the one your gonna fit has a weaker valve train then the one you already have

Stock hatch is gonna be revving hard and high alot, so why fit a roller rocker head when you've got a head with solid lifters in already?

Your not gonna gain any power from it as you cant fit the 98bhp head

[Gandi699]

Isn't it supposedly that the 1st gen roller rocker head is better than the standard blacktop head when you put the black top valve gear in it? Thats how I understand it anyway, as xsi/rallye heads and what not are all banned

[jeffchiz]

I don't see the point as well just thought I'd add that info in lol

[Ryan]

Isn't it supposedly that the 1st gen roller rocker head is better than the standard blacktop head when you put the black top valve gear in it? Thats how I understand it anyway, as xsi/rallye heads and what not are all banned

Most people perfer the early blacktop yep.

Largely down the the mechanical lifters as opposed to the later hydraulic ones.

[blackie_2k5]

ryan you've confused me with the yep... :p are you agreeing ppl prefer the blacktop?

or have you misread gandi699's post?

ive always seen ppl ditch the roller rocker in favour of the blacktop..for solid lifters etc....roler rockers are crap :(

[Ryan]

ryan you've confused me with the yep... :p are you agreeing ppl prefer the blacktop?

or have you misread gandi699's post?

Typing it on my phone and adding the yep was shit english anyway.

But alas = Early engines with the mechanical lifters are better.

[greyjasper51]

Isn't it supposedly that the 1st gen roller rocker head is better than the standard blacktop head when you put the black top valve gear in it? Thats how I understand it anyway, as xsi/rallye heads and what not are all banned

There not banned... Which is a shitter cus there getting harder to find... The pictures i posted are of the head you cant use and the solid lidters are better as they have a 1.75 lift ratio rather than the roller rockers of 1.25 lift ratio.... Other than that and the control cam thats pretty much all you can do motor wise...