*BREAKING* James Judd's Forged 1.9 Mk3 Ibiza HTA GT2868R Build *BREAKING*

[joehirth]

The cut outs are valve pockets, pretty sure it's to protect the pistons from contact. Compression ratio can be achieve by a shallower piston so if they're exactly the same pistons apart from the CR and the rods are the same length, then yeah the shallower one will have lower compression.

Also oversized does not create compression that's just the diameter of the piston i.e. OEM piston size is 81mm and oversized is anything more than that.

 

[James.Judd.1]

The cut outs are valve pockets, pretty sure it's to protect the pistons from contact. Compression ratio can be achieve by a shallower piston so if they're exactly the same pistons apart from the CR and the rods are the same length, then yeah the shallower one will have lower compression.

Also oversized does not create compression that's just the diameter of the piston i.e. OEM piston size is 81mm and oversized is anything more than that.

Yeah thats what I meant Joe.. what I was trying to say is a shallower piston wouldnt need the cut outs as it will be further away from the valves. Which makes me think they are lower CR

 

[joehirth]

Makes sense, my 9.25:1 JE's have pretty deep pockets.

 

[James.Judd.1]

After closer inspection I realised it actually has an ADR largeport head rather than a ported smallport.
Does anyone know if there is a largeport inlet manifold avaliable? (cant afford a SEM right now) or shall I just gasket match my original manifold..

 

[gavbey]

After closer inspection I realised it actually has an ADR largeport head rather than a ported smallport.
Does anyone know if there is a largeport inlet manifold avaliable? (cant afford a SEM right now) or shall I just gasket match my original manifold..

could you use a N/A inlet manifold as they are realy comon and im sure most are largeport arnt they?

car is looking good and that engine looks promising. ive had a million electrical problems and have goten sick of the car.! i acidently bought a r33 skyline gtst. ill run it till it runs out of mot in september then back to the cupra.

youre car will probibly have a GT35 by then

ha keep up the good work mate

 

[peter_cupra197]

nice build and only up the road!!!

 

[calvinvw]

could you use a N/A inlet manifold as they are realy comon and im sure most are largeport arnt they?

car is looking good and that engine looks promising. ive had a million electrical problems and have goten sick of the car.! i acidently bought a r33 skyline gtst. ill run it till it runs out of mot in september then back to the cupra.

youre car will probibly have a GT35 by then

ha keep up the good work mate

AGU/AEB is the only big port inlet manifold, i used the AGU to make a custom one.

 

[James.Judd.1]

could you use a N/A inlet manifold as they are realy comon and im sure most are largeport arnt they?

car is looking good and that engine looks promising. ive had a million electrical problems and have goten sick of the car.! i acidently bought a r33 skyline gtst. ill run it till it runs out of mot in september then back to the cupra.

youre car will probibly have a GT35 by then

ha keep up the good work mate

I think im just going to gasket match mine for now sure it will be fine for the hybrid.
Ah nightmare! I am worried I am going to have loads as the car has been off the road for quite some time now.

Sod the cupra and just keep the skyline! What sort of powers it running? got any pics?

 

[James.Judd.1]

Had a big clean up today. Block just needs a lick of paint tomorrow and she will look like new.

Some sexy forged internals

Cleaned up head..

And a lightened G60 flywheel to 4.4kg

 

[PhilW]

What are the inlet sizes on the head? All the info I have seems to point to the ADR being small port. Good cams in there tho.

 

[James.Judd.1]

What are the inlet sizes on the head? All the info I have seems to point to the ADR being small port. Good cams in there tho.

Next too my smallport they are HUGE 54mm i think where as my smallport was 40something

Just googled "ADR largeport" and it confirms it is

 

[olvie]

glad to see your happy with the engine mate you didnt waste anytime taking it apart lol best of luck woth ya build

 

[James.Judd.1]

glad to see your happy with the engine mate you didnt waste anytime taking it apart lol best of luck woth ya build

Very happy mate!

 

[olvie]

good good if u need anything else let me know

 

[James.Judd.1]

good good if u need anything else let me know

Cant think of anything at this moment in time but if i do ill give you a call.

 

[ibizacupra]

What are the inlet sizes on the head? All the info I have seems to point to the ADR being small port. Good cams in there tho.

my ADRs have all been largeport

 

[joehirth]

my ADRs have all been largeport

There was a big discussion on a thread on here somewhere between Bill and tashacupra. Seems as if you've come to a conclusion anyway.

 

[James.Judd.1]

There was a big discussion on a thread on here somewhere between Bill and tashacupra. Seems as if you've come to a conclusion anyway.

Yeah its 100% largeport the ports are massive and its still got a cast surface inside so it hasnt been ported

 

[L33TRB]

Just spent the last 45mins reading this, Will be epic when done buddy

 

[James.Judd.1]

Just spent the last 45mins reading this, Will be epic when done buddy

Haha wow I dont think Iv even read it all back myself! Cheers mate I hope she is