SuperTech valves HELP please!

[steevie wonder]

Which supertech valves will I need for the large port AGU head?
Do I go +1mm on both the inlet and exhaust as i'm going to get the head ported/flowed anyway before putting it on the car.

Which one of these?

Cheers in advance.

Steve

 

[h17och]

you dont NEED to go oversized just because your porting it but its another bit to the puzzle

 

[ibizacupra]

oversize on your spec is a waste of time/effort.

my stock size valves will be flowing plenty on 600bhp on largeport head (ported)

 

[steevie wonder]

Would it harm going larger? As they are the same price as the standard size.

If I stopped with the standard size do I require the 'single groove' valve?

Link to website here

Thanks guys, it's much appreciated!

Steve

 

[h17och]

would cost to have seats re-cut.

single groove a ment for higher reving so they say iirc

cant imagine they really make much difference but may be wrong

 

[ibizacupra]

Would it harm going larger? As they are the same price as the standard size.

If I stopped with the standard size do I require the 'single groove' valve?

Link to website here

Thanks guys, it's much appreciated!

Steve

having introduced supertech 1.8t valves into the uk first i would say if you not yet bought them, dont bother going oversize intakes anyhow... inlets work fine. for your spec motor its plenty. if you have bought them then use them yes, and if you already have single collet type dont forget you also need their single groove keepers. single groove give tighter securing and aloow some level of lateral movement where tripple groove dont... generally single groove on race cars, revved hard etc. eg badgerwagen revs to 9k now for example

 

[steevie wonder]

Which valves will be a straight swap then? Single or triple groove?
Or does in not matter?

Sorry for all the questions!!

Steve

 

[h17och]

tripple will use you current collets.

single will require new collets

 

[steevie wonder]

How much and where would I get single groove collets from?

Cheers,

Steve

 

[ibizacupra]

single collets from supertech or me..

 

[steevie wonder]

single collets from supertech or me..

PM'd!

 

[INA]

We saw a 5cfm increase in going with the 1mm oversized valves.
Not really needed...

 

[ibizacupra]

shipping costs for just collets outways cost of collets..